1<html>
2<head>
3<div height="0" hidden="true">
4<div id="bug8380">
5SkDCubic::ComplexBreak
6{{{126, 9.396100044250488281}, {125.6320571899414063, 9.295844078063964844}, {125.1227340698242188, 9.337338447570800781}, {124.6031646728515625, 9.379667282104492188}}},
7inflectionsTs[0]=0.999997776 {{{126.1618761931709827, 9.252680507258252973}, {123.04446008475567, 9.506653492188940291}}},
8SkDCubic::ComplexBreak
9{{{124.6031646728515625, 9.379667282104492188}, {124.1427383422851563, 9.417178153991699219}, {123.6742630004882813, 9.45534515380859375}, {123.28900146484375, 9.396100044250488281}}},
10inflectionsTs[0]=4.14921088e-06 {{{125.984438133710114, 9.267135117035042668}, {123.2218797495565639, 9.492200381017113386}}},
11maxCurvature[0]=0.0817322831 {{{125.8735553329735666, 9.277935394706121386}, {123.1067608854740314, 9.499713475347833835}}},
12SkDCubic::ComplexBreak
13{{{126, 9.396200180053710938}, {125.305999755859375, 9.206999778747558594}, {124.1090011596679688, 9.522199630737304688}, {123.28900146484375, 9.396200180053710938}}},
14inflectionsTs[0]=0.530286644 {{{127.5428560571536707, 9.140180090182106198}, {121.6628069847287179, 9.619260454379688241}}},
15maxCurvature[0]=0.568563182 {{{127.4346914043237859, 9.15278490094694952}, {121.5456828946143446, 9.624913158409162506}}},
16seg=1 {{{0, 353.891998f}, {126, 9.39610004f}}}
17seg=2 {{{126, 9.39610004f}, {125.632057f, 9.29584408f}, {125.122734f, 9.33733845f}, {124.603165f, 9.37966728f}}}
18seg=3 {{{124.603165f, 9.37966728f}, {124.142731f, 9.41717815f}, {123.674263f, 9.45534515f}, {123.289001f, 9.39610004f}}}
19seg=4 {{{123.289001f, 9.39610004f}, {118.119003f, 8.07219982f}}}
20seg=5 {{{118.119003f, 8.07219982f}, {8.17210007f, 104.212997f}}}
21seg=6 {{{8.17210007f, 104.212997f}, {0, 259.298737f}}}
22seg=7 {{{0, 259.298737f}, {0, 353.891998f}}}
23op sect
24seg=8 {{{8.17210007f, 104.212997f}, {-5.82350016f, 369.813995f}}}
25seg=9 {{{-5.82350016f, 369.813995f}, {126, 9.39620018f}}}
26seg=10 {{{126, 9.39620018f}, {125.631981f, 9.29586983f}, {125.12252f, 9.3373785f}, {124.602829f, 9.37972069f}}}
27seg=11 {{{124.602829f, 9.37972069f}, {124.142509f, 9.41722488f}, {123.674164f, 9.45538425f}, {123.289001f, 9.39620018f}}}
28seg=12 {{{123.289001f, 9.39620018f}, {118.119003f, 8.07219982f}}}
29seg=13 {{{118.119003f, 8.07219982f}, {8.17210007f, 104.212997f}}}
30debugShowLineIntersection wtTs[0]=1 {{{8.17210007,104.212997}, {-5.82350016,369.813995}}} {{-5.82350016,369.813995}} wnTs[0]=0 {{{-5.82350016,369.813995}, {126,9.39620018}}}
31debugShowLineIntersection wtTs[0]=0 {{{8.17210007,104.212997}, {-5.82350016,369.813995}}} {{8.17210007,104.212997}} wnTs[0]=1 {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
32debugShowCubicLineIntersection wtTs[0]=0 {{{126,9.39620018}, {125.631981,9.29586983}, {125.12252,9.3373785}, {124.602829,9.37972069}}} {{126,9.39620018}} wnTs[0]=1 {{{-5.82350016,369.813995}, {126,9.39620018}}}
33debugShowCubicLineIntersection no intersect {{{124.602829,9.37972069}, {124.142509,9.41722488}, {123.674164,9.45538425}, {123.289001,9.39620018}}} {{{-5.82350016,369.813995}, {126,9.39620018}}}
34debugShowLineIntersection no intersect {{{-5.82350016,369.813995}, {126,9.39620018}}} {{{123.289001,9.39620018}, {118.119003,8.07219982}}}
35debugShowLineIntersection no intersect {{{-5.82350016,369.813995}, {126,9.39620018}}} {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
36debugShowCubicIntersection wtTs[0]=1 {{{126,9.39620018}, {125.631981,9.29586983}, {125.12252,9.3373785}, {124.602829,9.37972069}}} {{124.602829,9.37972069}} wnTs[0]=0 {{{124.602829,9.37972069}, {124.142509,9.41722488}, {123.674164,9.45538425}, {123.289001,9.39620018}}}
37debugShowCubicLineIntersection wtTs[0]=1 {{{124.602829,9.37972069}, {124.142509,9.41722488}, {123.674164,9.45538425}, {123.289001,9.39620018}}} {{123.289001,9.39620018}} wnTs[0]=0 {{{123.289001,9.39620018}, {118.119003,8.07219982}}}
38debugShowLineIntersection wtTs[0]=1 {{{123.289001,9.39620018}, {118.119003,8.07219982}}} {{118.119003,8.07219982}} wnTs[0]=0 {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
39debugShowLineIntersection no intersect {{{8.17210007,104.212997}, {-5.82350016,369.813995}}} {{{0,353.891998}, {126,9.39610004}}}
40debugShowLineIntersection wtTs[0]=0 {{{8.17210007,104.212997}, {-5.82350016,369.813995}}} {{8.17210007,104.212997}} wnTs[0]=1 {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
41debugShowLineIntersection wtTs[0]=0 {{{8.17210007,104.212997}, {-5.82350016,369.813995}}} {{8.17210007,104.212997}} wtTs[1]=0.583904956 {{0,259.298737}} wnTs[0]=0 {{{8.17210007,104.212997}, {0,259.298737}}} wnTs[1]=1
42SkOpSegment::addT insert t=0.583904956 segID=8 spanID=27
43debugShowLineIntersection wtTs[0]=0.583904956 {{{8.17210007,104.212997}, {-5.82350016,369.813995}}} {{0,259.298737}} wnTs[0]=0 {{{0,259.298737}, {0,353.891998}}}
44debugShowLineIntersection wtTs[0]=0.0441765002 {{{-5.82350016,369.813995}, {126,9.39620018}}} {{0,353.891998}} wtTs[1]=1 {{126,9.39620018}} wnTs[0]=0 {{{0,353.891998}, {126,9.39610004}}} wnTs[1]=0.999999744
45SkOpSegment::addT insert t=0.0441765002 segID=9 spanID=28
46debugShowCubicLineIntersection no intersect {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}} {{{-5.82350016,369.813995}, {126,9.39620018}}}
47debugShowLineIntersection no intersect {{{-5.82350016,369.813995}, {126,9.39620018}}} {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
48debugShowLineIntersection no intersect {{{-5.82350016,369.813995}, {126,9.39620018}}} {{{8.17210007,104.212997}, {0,259.298737}}}
49debugShowLineIntersection wtTs[0]=0.0441765002 {{{-5.82350016,369.813995}, {126,9.39620018}}} {{0,353.891998}} wnTs[0]=1 {{{0,259.298737}, {0,353.891998}}}
50debugShowCubicLineIntersection wtTs[0]=0 {{{126,9.39620018}, {125.631981,9.29586983}, {125.12252,9.3373785}, {124.602829,9.37972069}}} {{126,9.39620018}} wnTs[0]=1 {{{0,353.891998}, {126,9.39610004}}}
51-1=(0.375,0.5) [-1]
52SkTSect::addForPerp addBounded span=-1 opp=-1
53-1=(0.5,0.625) [-1]
54SkTSect::addForPerp addBounded span=-1 opp=-1
55-1=(0.625,0.75) [-1]
56SkTSect::addForPerp addBounded span=-1 opp=-1
57-1=(0.75,0.8125) [-1]
58SkTSect::addForPerp addBounded span=-1 opp=-1
59-1=(0.8125,0.875) [-1]
60SkTSect::addForPerp addBounded span=-1 opp=-1
61-1=(0.875,0.9375) [-1]
62SkTSect::addForPerp addBounded span=-1 opp=-1
63SkTSect::addForPerp priorSpan=-1 t=0.937702598 opp=-1
64-1=(0.9375,1) []
65SkTSect::addForPerp addBounded span=-1 opp=-1
66debugShowCubicIntersection wtTs[0]=0.307128906 {{{126,9.39620018}, {125.631981,9.29586983}, {125.12252,9.3373785}, {124.602829,9.37972069}}} {{125.624687,9.33981037}} wtTs[1]=0.9375 {{124.700119,9.37182617}} wnTs[0]=0.307191 {{{126,9.39610004}, {125.632057,9.29584408}, {125.122734,9.33733845}, {124.603165,9.37966728}}} wnTs[1]=0.937702598
67SkOpSegment::addT insert t=0.307128906 segID=10 spanID=29
68SkOpSegment::addT insert t=0.307190555 segID=2 spanID=30
69SkOpSegment::addT insert t=0.9375 segID=10 spanID=31
70SkOpSegment::addT insert t=0.937702598 segID=2 spanID=32
71debugShowCubicIntersection no intersect {{{126,9.39620018}, {125.631981,9.29586983}, {125.12252,9.3373785}, {124.602829,9.37972069}}} {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}}
72debugShowCubicLineIntersection no intersect {{{124.602829,9.37972069}, {124.142509,9.41722488}, {123.674164,9.45538425}, {123.289001,9.39620018}}} {{{0,353.891998}, {126,9.39610004}}}
73-1=(0.125,0.1875) [-1]
74SkTSect::addForPerp addBounded span=-1 opp=-1
75-1=(0.1875,0.25) [-1]
76SkTSect::addForPerp addBounded span=-1 opp=-1
77-1=(0.25,0.375) [-1]
78SkTSect::addForPerp addBounded span=-1 opp=-1
79-1=(0.375,0.5) [-1]
80SkTSect::addForPerp addBounded span=-1 opp=-1
81-1=(0.5,0.625) [-1]
82SkTSect::addForPerp addBounded span=-1 opp=-1
83-1=(0.625,0.75) [-1]
84SkTSect::addForPerp addBounded span=-1 opp=-1
85debugShowCubicIntersection wtTs[0]=0.0625 {{{124.602829,9.37972069}, {124.142509,9.41722488}, {123.674164,9.45538425}, {123.289001,9.39620018}}} {{124.516449,9.38673687}} wtTs[1]=0.625 {{123.752594,9.4268837}} wnTs[0]=0.0627287 {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}} wnTs[1]=0.625091708
86SkOpSegment::addT insert t=0.0625 segID=11 spanID=33
87SkOpSegment::addT insert t=0.0627286673 segID=3 spanID=34
88SkOpSegment::addT insert t=0.625 segID=11 spanID=35
89SkOpSegment::addT insert t=0.625091708 segID=3 spanID=36
90debugShowCubicLineIntersection no intersect {{{124.602829,9.37972069}, {124.142509,9.41722488}, {123.674164,9.45538425}, {123.289001,9.39620018}}} {{{123.289001,9.39610004}, {118.119003,8.07219982}}}
91debugShowLineIntersection no intersect {{{123.289001,9.39620018}, {118.119003,8.07219982}}} {{{0,353.891998}, {126,9.39610004}}}
92debugShowCubicLineIntersection wtTs[0]=0.999978653 {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}} {{123.289001,9.39620018}} wnTs[0]=0 {{{123.289001,9.39620018}, {118.119003,8.07219982}}}
93debugShowLineIntersection wtTs[0]=4.65488731e-06 {{{123.289001,9.39620018}, {118.119003,8.07219982}}} {{123.289001,9.39610004}} wtTs[1]=1 {{118.119003,8.07219982}} wnTs[0]=0 {{{123.289001,9.39610004}, {118.119003,8.07219982}}} wnTs[1]=1
94debugShowLineIntersection wtTs[0]=1 {{{123.289001,9.39620018}, {118.119003,8.07219982}}} {{118.119003,8.07219982}} wnTs[0]=0 {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
95debugShowLineIntersection no intersect {{{118.119003,8.07219982}, {8.17210007,104.212997}}} {{{0,353.891998}, {126,9.39610004}}}
96debugShowLineIntersection wtTs[0]=0 {{{118.119003,8.07219982}, {8.17210007,104.212997}}} {{118.119003,8.07219982}} wnTs[0]=1 {{{123.289001,9.39610004}, {118.119003,8.07219982}}}
97debugShowLineIntersection wtTs[0]=0 {{{118.119003,8.07219982}, {8.17210007,104.212997}}} {{118.119003,8.07219982}} wtTs[1]=1 {{8.17210007,104.212997}} wnTs[0]=0 {{{118.119003,8.07219982}, {8.17210007,104.212997}}} wnTs[1]=1
98debugShowLineIntersection wtTs[0]=1 {{{118.119003,8.07219982}, {8.17210007,104.212997}}} {{8.17210007,104.212997}} wnTs[0]=0 {{{8.17210007,104.212997}, {0,259.298737}}}
99debugShowCubicLineIntersection wtTs[0]=0 {{{126,9.39610004}, {125.632057,9.29584408}, {125.122734,9.33733845}, {124.603165,9.37966728}}} {{126,9.39610004}} wnTs[0]=1 {{{0,353.891998}, {126,9.39610004}}}
100debugShowCubicLineIntersection no intersect {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}} {{{0,353.891998}, {126,9.39610004}}}
101debugShowLineIntersection no intersect {{{0,353.891998}, {126,9.39610004}}} {{{123.289001,9.39610004}, {118.119003,8.07219982}}}
102debugShowLineIntersection no intersect {{{0,353.891998}, {126,9.39610004}}} {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
103debugShowLineIntersection no intersect {{{0,353.891998}, {126,9.39610004}}} {{{8.17210007,104.212997}, {0,259.298737}}}
104debugShowLineIntersection wtTs[0]=0 {{{0,353.891998}, {126,9.39610004}}} {{0,353.891998}} wnTs[0]=1 {{{0,259.298737}, {0,353.891998}}}
105debugShowCubicIntersection wtTs[0]=1 {{{126,9.39610004}, {125.632057,9.29584408}, {125.122734,9.33733845}, {124.603165,9.37966728}}} {{124.603165,9.37966728}} wnTs[0]=0 {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}}
106debugShowCubicLineIntersection wtTs[0]=1 {{{124.603165,9.37966728}, {124.142731,9.41717815}, {123.674263,9.45534515}, {123.289001,9.39610004}}} {{123.289001,9.39610004}} wnTs[0]=0 {{{123.289001,9.39610004}, {118.119003,8.07219982}}}
107debugShowLineIntersection wtTs[0]=1 {{{123.289001,9.39610004}, {118.119003,8.07219982}}} {{118.119003,8.07219982}} wnTs[0]=0 {{{118.119003,8.07219982}, {8.17210007,104.212997}}}
108debugShowLineIntersection wtTs[0]=1 {{{118.119003,8.07219982}, {8.17210007,104.212997}}} {{8.17210007,104.212997}} wnTs[0]=0 {{{8.17210007,104.212997}, {0,259.298737}}}
109debugShowLineIntersection wtTs[0]=1 {{{8.17210007,104.212997}, {0,259.298737}}} {{0,259.298737}} wnTs[0]=0 {{{0,259.298737}, {0,353.891998}}}
110----------------x-x--x-x-------------- addExpanded
11100:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
11201:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
11302:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
11403:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
11504:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
11605:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
11706:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
11807:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
11908:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
12009:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
12110:  coinSeg/Span/PtT=11/33/33 endSpan=6 oppSeg/Span/PtT=11/22/22 oppEndSpan=6 ExpandCoin
12211:  coinSeg/Span/PtT=2/30/30 endSpan=19 oppSeg/Span/PtT=2/3/3 oppEndSpan=19 ExpandCoin
12312:  seg/base=13/25 seg/base=5/9 MarkCoinStart
12413:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
12514:  seg/base=4/7 seg/base=12/23 MarkCoinStart
12615:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
12716:  seg/base=11/33 seg/base=3/34 MarkCoinStart
12817:  seg/base=11/35 seg/base=3/36 MarkCoinEnd
12918:  seg/base=2/30 seg/base=10/29 MarkCoinStart
13019:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
13120:  seg/base=9/28 seg/base=1/1 MarkCoinStart
13221:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
13322:  seg/base=8/15 seg/base=6/11 MarkCoinStart
13423:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
135SkOpSegment::debugShowActiveSpans id=8 (8.17210007,104.212997 -2.71619996e-07,259.298737) t=0 tEnd=0.583904956 windSum=? windValue=1
136SkOpSegment::debugShowActiveSpans id=8 (-2.71619996e-07,259.298737 -5.82350016,369.813995) t=0.583904956 tEnd=1 windSum=? windValue=1
137SkOpSegment::debugShowActiveSpans id=9 (-5.82350016,369.813995 7.26031715e-07,353.891998) t=0 tEnd=0.0441765002 windSum=? windValue=1
138SkOpSegment::debugShowActiveSpans id=9 (7.26031715e-07,353.891998 126,9.39620018) t=0.0441765002 tEnd=1 windSum=? windValue=1
139SkOpSegment::debugShowActiveSpans id=10 (126,9.39620018 125.886971,9.36538583 125.760599,9.34795095 125.624687,9.33981037) t=0 tEnd=0.307128906 windSum=? windValue=1
140SkOpSegment::debugShowActiveSpans id=10 (125.624687,9.33981037 125.345733,9.32310212 125.026588,9.34554777 124.700119,9.37182617) t=0.307128906 tEnd=0.9375 windSum=? windValue=1
141SkOpSegment::debugShowActiveSpans id=10 (124.700119,9.37182617 124.66775,9.37443162 124.63531,9.3770743 124.602829,9.37972069) t=0.9375 tEnd=1 windSum=? windValue=1
142SkOpSegment::debugShowActiveSpans id=11 (124.602829,9.37972069 124.574059,9.3820647 124.545259,9.38441166 124.516449,9.38673687) t=0 tEnd=0.0625 windSum=? windValue=1
143SkOpSegment::debugShowActiveSpans id=11 (124.516449,9.38673687 124.257155,9.40766372 123.997126,9.42685982 123.752594,9.4268837) t=0.0625 tEnd=0.625 windSum=? windValue=1
144SkOpSegment::debugShowActiveSpans id=11 (123.752594,9.4268837 123.589573,9.42689962 123.433437,9.41839421 123.289001,9.39620018) t=0.625 tEnd=1 windSum=? windValue=1
145SkOpSegment::debugShowActiveSpans id=12 (123.289001,9.39620018 118.119003,8.07219982) t=0 tEnd=1 windSum=? windValue=1
146SkOpSegment::debugShowActiveSpans id=13 (118.119003,8.07219982 8.17210007,104.212997) t=0 tEnd=1 windSum=? windValue=1
147SkOpSegment::debugShowActiveSpans id=1 (0,353.891998 126,9.39610004) t=0 tEnd=1 windSum=? windValue=1
148SkOpSegment::debugShowActiveSpans id=2 (126,9.39610004 125.886971,9.36530236 125.760605,9.34788101 125.624695,9.33975124) t=0 tEnd=0.307190555 windSum=? windValue=1
149SkOpSegment::debugShowActiveSpans id=2 (125.624695,9.33975124 125.345738,9.3230648 125.026588,9.34552196 124.700119,9.37180042) t=0.307190555 tEnd=0.937702598 windSum=? windValue=1
150SkOpSegment::debugShowActiveSpans id=2 (124.700119,9.37180042 124.667862,9.37439685 124.635532,9.37703031 124.603165,9.37966728) t=0.937702598 tEnd=1 windSum=? windValue=1
151SkOpSegment::debugShowActiveSpans id=3 (124.603165,9.37966728 124.574282,9.38202029 124.545364,9.3843762 124.516441,9.38671017) t=0 tEnd=0.0627286673 windSum=? windValue=1
152SkOpSegment::debugShowActiveSpans id=3 (124.516441,9.38671017 124.257145,9.40763418 123.997124,9.42681973 123.752594,9.42682648) t=0.0627286673 tEnd=0.625091708 windSum=? windValue=1
153SkOpSegment::debugShowActiveSpans id=3 (123.752594,9.42682648 123.589574,9.42683098 123.433439,9.41831153 123.289001,9.39610004) t=0.625091708 tEnd=1 windSum=? windValue=1
154SkOpSegment::debugShowActiveSpans id=4 (123.289001,9.39610004 118.119003,8.07219982) t=0 tEnd=1 windSum=? windValue=1
155SkOpSegment::debugShowActiveSpans id=5 (118.119003,8.07219982 8.17210007,104.212997) t=0 tEnd=1 windSum=? windValue=1
156SkOpSegment::debugShowActiveSpans id=6 (8.17210007,104.212997 0,259.298737) t=0 tEnd=1 windSum=? windValue=1
157SkOpSegment::debugShowActiveSpans id=7 (0,259.298737 0,353.891998) t=0 tEnd=1 windSum=? windValue=1
158----------------x-x--x-x-------------- move_multiples
15900:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
16001:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
16102:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
16203:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
16304:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
16405:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
16506:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
16607:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
16708:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
16809:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
16910:  coinSeg/Span/PtT=11/33/33 endSpan=6 oppSeg/Span/PtT=11/22/22 oppEndSpan=6 ExpandCoin
17011:  coinSeg/Span/PtT=2/30/30 endSpan=19 oppSeg/Span/PtT=2/3/3 oppEndSpan=19 ExpandCoin
17112:  seg/base=13/25 seg/base=5/9 MarkCoinStart
17213:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
17314:  seg/base=4/7 seg/base=12/23 MarkCoinStart
17415:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
17516:  seg/base=11/33 seg/base=3/34 MarkCoinStart
17617:  seg/base=11/35 seg/base=3/36 MarkCoinEnd
17718:  seg/base=2/30 seg/base=10/29 MarkCoinStart
17819:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
17920:  seg/base=9/28 seg/base=1/1 MarkCoinStart
18021:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
18122:  seg/base=8/15 seg/base=6/11 MarkCoinStart
18223:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
183----------------x-x--x-x-------------- move_nearby
18400:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
18501:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
18602:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
18703:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
18804:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
18905:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
19006:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
19107:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
19208:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
19309:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
19410:  coinSeg/Span/PtT=11/33/33 endSpan=6 oppSeg/Span/PtT=11/22/22 oppEndSpan=6 ExpandCoin
19511:  coinSeg/Span/PtT=2/30/30 endSpan=19 oppSeg/Span/PtT=2/3/3 oppEndSpan=19 ExpandCoin
19612:  seg/base=13/25 seg/base=5/9 MarkCoinStart
19713:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
19814:  seg/base=4/7 seg/base=12/23 MarkCoinStart
19915:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
20016:  seg/base=11/33 seg/base=3/34 MarkCoinStart
20117:  seg/base=11/35 seg/base=3/36 MarkCoinEnd
20218:  seg/base=2/30 seg/base=10/29 MarkCoinStart
20319:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
20420:  seg/base=9/28 seg/base=1/1 MarkCoinStart
20521:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
20622:  seg/base=8/15 seg/base=6/11 MarkCoinStart
20723:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
208----------------x-x--x-x-------------- correctEnds
20900:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
21001:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
21102:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
21203:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
21304:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
21405:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
21506:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
21607:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
21708:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
21809:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
21910:  coinSeg/Span/PtT=11/33/33 endSpan=6 oppSeg/Span/PtT=11/22/22 oppEndSpan=6 ExpandCoin
22011:  coinSeg/Span/PtT=2/30/30 endSpan=19 oppSeg/Span/PtT=2/3/3 oppEndSpan=19 ExpandCoin
22112:  seg/base=13/25 seg/base=5/9 MarkCoinStart
22213:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
22314:  seg/base=4/7 seg/base=12/23 MarkCoinStart
22415:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
22516:  seg/base=11/33 seg/base=3/34 MarkCoinStart
22617:  seg/base=11/35 seg/base=3/36 MarkCoinEnd
22718:  seg/base=2/30 seg/base=10/29 MarkCoinStart
22819:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
22920:  seg/base=9/28 seg/base=1/1 MarkCoinStart
23021:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
23122:  seg/base=8/15 seg/base=6/11 MarkCoinStart
23223:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
233----------------x-x--x-x-------------- addEndMovedSpans
23400:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
23501:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
23602:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
23703:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
23804:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
23905:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
24006:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
24107:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
24208:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
24309:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
24410:  coinSeg/Span/PtT=11/33/33 endSpan=6 oppSeg/Span/PtT=11/22/22 oppEndSpan=6 ExpandCoin
24511:  coinSeg/Span/PtT=2/30/30 endSpan=19 oppSeg/Span/PtT=2/3/3 oppEndSpan=19 ExpandCoin
24612:  seg/base=13/25 seg/base=5/9 MarkCoinStart
24713:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
24814:  seg/base=4/7 seg/base=12/23 MarkCoinStart
24915:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
25016:  seg/base=11/33 seg/base=3/34 MarkCoinStart
25117:  seg/base=11/35 seg/base=3/36 MarkCoinEnd
25218:  seg/base=2/30 seg/base=10/29 MarkCoinStart
25319:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
25420:  seg/base=9/28 seg/base=1/1 MarkCoinStart
25521:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
25622:  seg/base=8/15 seg/base=6/11 MarkCoinStart
25723:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
258----------------x-x--x-x-------------- expand
25900:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
26001:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
26102:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
26203:  coinSeg/Span/PtT=2/3/3 endSpan=30 oppSeg/Span/PtT=10/19/19 oppEndSpan=29 MissingCoin
26304:  coinSeg/Span/PtT=3/36/36 endSpan=6 oppSeg/Span/PtT=11/35/35 oppEndSpan=22 MissingCoin
26405:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
26506:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
26607:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
26708:  coinSeg/Span/PtT=10/19/19 endSpan=29 oppSeg/Span/PtT=2/3/3 oppEndSpan=30 MissingCoin
26809:  coinSeg/Span/PtT=11/35/35 endSpan=22 oppSeg/Span/PtT=3/36/36 oppEndSpan=6 MissingCoin
26910:  coinSeg/Span/PtT=11/33/33 endSpan=6 oppSeg/Span/PtT=11/22/22 oppEndSpan=6 ExpandCoin
27011:  coinSeg/Span/PtT=2/30/30 endSpan=19 oppSeg/Span/PtT=2/3/3 oppEndSpan=19 ExpandCoin
27112:  seg/base=13/25 seg/base=5/9 MarkCoinStart
27213:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
27314:  seg/base=4/7 seg/base=12/23 MarkCoinStart
27415:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
27516:  seg/base=11/33 seg/base=3/34 MarkCoinStart
27617:  seg/base=11/35 seg/base=3/36 MarkCoinEnd
27718:  seg/base=2/30 seg/base=10/29 MarkCoinStart
27819:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
27920:  seg/base=9/28 seg/base=1/1 MarkCoinStart
28021:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
28122:  seg/base=8/15 seg/base=6/11 MarkCoinStart
28223:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
283------------------xx-x-x-------------- addExpanded
28400:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
28501:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
28602:  seg/base=13/25 seg/base=5/9 MarkCoinStart
28703:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
28804:  seg/base=4/7 seg/base=12/23 MarkCoinStart
28905:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
29006:  seg/base=11/33 seg/base=3/34 MarkCoinStart
29107:  seg/base=11/22 seg/base=3/6 MarkCoinEnd
29208:  seg/base=3/36 MarkCoinInsert
29309:  seg/base=11/35 MarkCoinInsert
29410:  seg/base=2/3 seg/base=10/19 MarkCoinStart
29511:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
29612:  seg/base=10/29 MarkCoinInsert
29713:  seg/base=2/30 MarkCoinInsert
29814:  seg/base=9/28 seg/base=1/1 MarkCoinStart
29915:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
30016:  seg/base=8/15 seg/base=6/11 MarkCoinStart
30117:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
302------------------xx-x-x-------------- move_multiples
30300:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
30401:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
30502:  seg/base=13/25 seg/base=5/9 MarkCoinStart
30603:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
30704:  seg/base=4/7 seg/base=12/23 MarkCoinStart
30805:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
30906:  seg/base=11/33 seg/base=3/34 MarkCoinStart
31007:  seg/base=11/22 seg/base=3/6 MarkCoinEnd
31108:  seg/base=3/36 MarkCoinInsert
31209:  seg/base=11/35 MarkCoinInsert
31310:  seg/base=2/3 seg/base=10/19 MarkCoinStart
31411:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
31512:  seg/base=10/29 MarkCoinInsert
31613:  seg/base=2/30 MarkCoinInsert
31714:  seg/base=9/28 seg/base=1/1 MarkCoinStart
31815:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
31916:  seg/base=8/15 seg/base=6/11 MarkCoinStart
32017:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
321------------------xx-x-x-------------- move_nearby
32200:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
32301:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
32402:  seg/base=13/25 seg/base=5/9 MarkCoinStart
32503:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
32604:  seg/base=4/7 seg/base=12/23 MarkCoinStart
32705:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
32806:  seg/base=11/33 seg/base=3/34 MarkCoinStart
32907:  seg/base=11/22 seg/base=3/6 MarkCoinEnd
33008:  seg/base=3/36 MarkCoinInsert
33109:  seg/base=11/35 MarkCoinInsert
33210:  seg/base=2/3 seg/base=10/19 MarkCoinStart
33311:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
33412:  seg/base=10/29 MarkCoinInsert
33513:  seg/base=2/30 MarkCoinInsert
33614:  seg/base=9/28 seg/base=1/1 MarkCoinStart
33715:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
33816:  seg/base=8/15 seg/base=6/11 MarkCoinStart
33917:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
340------------------xx-x-x-------------- addExpanded
34100:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
34201:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
34302:  seg/base=13/25 seg/base=5/9 MarkCoinStart
34403:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
34504:  seg/base=4/7 seg/base=12/23 MarkCoinStart
34605:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
34706:  seg/base=11/33 seg/base=3/34 MarkCoinStart
34807:  seg/base=11/22 seg/base=3/6 MarkCoinEnd
34908:  seg/base=3/36 MarkCoinInsert
35009:  seg/base=11/35 MarkCoinInsert
35110:  seg/base=2/3 seg/base=10/19 MarkCoinStart
35211:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
35312:  seg/base=10/29 MarkCoinInsert
35413:  seg/base=2/30 MarkCoinInsert
35514:  seg/base=9/28 seg/base=1/1 MarkCoinStart
35615:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
35716:  seg/base=8/15 seg/base=6/11 MarkCoinStart
35817:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
359------------------xx-x-x-------------- mark
36000:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
36101:  coinSeg/Span/PtT=5/9/9 endSpan=10 oppSeg/Span/PtT=13/25/25 oppEndSpan=26 MissingCoin
36202:  seg/base=13/25 seg/base=5/9 MarkCoinStart
36303:  seg/base=13/26 seg/base=5/10 MarkCoinEnd
36404:  seg/base=4/7 seg/base=12/23 MarkCoinStart
36505:  seg/base=4/8 seg/base=12/24 MarkCoinEnd
36606:  seg/base=11/33 seg/base=3/34 MarkCoinStart
36707:  seg/base=11/22 seg/base=3/6 MarkCoinEnd
36808:  seg/base=3/36 MarkCoinInsert
36909:  seg/base=11/35 MarkCoinInsert
37010:  seg/base=2/3 seg/base=10/19 MarkCoinStart
37111:  seg/base=2/32 seg/base=10/31 MarkCoinEnd
37212:  seg/base=10/29 MarkCoinInsert
37313:  seg/base=2/30 MarkCoinInsert
37414:  seg/base=9/28 seg/base=1/1 MarkCoinStart
37515:  seg/base=9/18 seg/base=1/2 MarkCoinEnd
37616:  seg/base=8/15 seg/base=6/11 MarkCoinStart
37717:  seg/base=8/27 seg/base=6/12 MarkCoinEnd
378-------------------------------------- missing_coincidence
379-------------------------------------- expand
380-------------------------------------- expand
381-------------------------------------- apply
382SkOpSegment::markDone id=5 (118.119003,8.07219982 8.17210007,104.212997) t=0 [9] (118.119003,8.07219982) tEnd=1 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
383SkOpSegment::markDone id=12 (123.289001,9.39620018 118.119003,8.07219982) t=0 [23] (123.289001,9.39620018) tEnd=1 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
384SkOpSegment::markDone id=3 (124.603165,9.37966728 124.142731,9.41717815 123.674263,9.45534515 123.289001,9.39610004) t=0.0627286673 [34] (124.516441,9.38671017) tEnd=0.625091708 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
385SkOpSegment::markDone id=3 (124.603165,9.37966728 124.142731,9.41717815 123.674263,9.45534515 123.289001,9.39610004) t=0.625091708 [36] (123.752594,9.42682648) tEnd=1 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
386SkOpSegment::markDone id=10 (126,9.39620018 125.631981,9.29586983 125.12252,9.3373785 124.602829,9.37972069) t=0 [19] (126,9.39620018) tEnd=0.307128906 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
387SkOpSegment::markDone id=10 (126,9.39620018 125.631981,9.29586983 125.12252,9.3373785 124.602829,9.37972069) t=0.307128906 [29] (125.624687,9.33981037) tEnd=0.9375 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
388SkOpSegment::markDone id=1 (0,353.891998 126,9.39610004) t=0 [1] (0,353.891998) tEnd=1 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
389SkOpSegment::markDone id=6 (8.17210007,104.212997 0,259.298737) t=0 [11] (8.17210007,104.212997) tEnd=1 newWindSum=? newOppSum=? oppSum=? windSum=? windValue=0 oppValue=0
390-------------------------------------- findOverlaps
391SkOpSegment::debugShowActiveSpans id=8 (8.17210007,104.212997 -2.71619996e-07,259.298737) t=0 tEnd=0.583904956 windSum=? oppSum=? windValue=1 oppValue=1
392SkOpSegment::debugShowActiveSpans id=8 (-2.71619996e-07,259.298737 -5.82350016,369.813995) t=0.583904956 tEnd=1 windSum=? windValue=1
393SkOpSegment::debugShowActiveSpans id=9 (-5.82350016,369.813995 7.26031715e-07,353.891998) t=0 tEnd=0.0441765002 windSum=? windValue=1
394SkOpSegment::debugShowActiveSpans id=9 (7.26031715e-07,353.891998 126,9.39620018) t=0.0441765002 tEnd=1 windSum=? oppSum=? windValue=1 oppValue=1
395SkOpSegment::debugShowActiveSpans id=10 (124.700119,9.37182617 124.66775,9.37443162 124.63531,9.3770743 124.602829,9.37972069) t=0.9375 tEnd=1 windSum=? windValue=1
396SkOpSegment::debugShowActiveSpans id=11 (124.602829,9.37972069 124.574059,9.3820647 124.545259,9.38441166 124.516449,9.38673687) t=0 tEnd=0.0625 windSum=? windValue=1
397SkOpSegment::debugShowActiveSpans id=11 (124.516449,9.38673687 124.257155,9.40766372 123.997126,9.42685982 123.752594,9.4268837) t=0.0625 tEnd=0.625 windSum=? oppSum=? windValue=1 oppValue=1
398SkOpSegment::debugShowActiveSpans id=11 (123.752594,9.4268837 123.589573,9.42689962 123.433437,9.41839421 123.289001,9.39620018) t=0.625 tEnd=1 windSum=? oppSum=? windValue=1 oppValue=1
399SkOpSegment::debugShowActiveSpans id=13 (118.119003,8.07219982 8.17210007,104.212997) t=0 tEnd=1 windSum=? oppSum=? windValue=1 oppValue=1
400SkOpSegment::debugShowActiveSpans id=2 (126,9.39610004 125.886971,9.36530236 125.760605,9.34788101 125.624695,9.33975124) t=0 tEnd=0.307190555 windSum=? oppSum=? windValue=1 oppValue=1
401SkOpSegment::debugShowActiveSpans id=2 (125.624695,9.33975124 125.345738,9.3230648 125.026588,9.34552196 124.700119,9.37180042) t=0.307190555 tEnd=0.937702598 windSum=? oppSum=? windValue=1 oppValue=1
402SkOpSegment::debugShowActiveSpans id=2 (124.700119,9.37180042 124.667862,9.37439685 124.635532,9.37703031 124.603165,9.37966728) t=0.937702598 tEnd=1 windSum=? windValue=1
403SkOpSegment::debugShowActiveSpans id=3 (124.603165,9.37966728 124.574282,9.38202029 124.545364,9.3843762 124.516441,9.38671017) t=0 tEnd=0.0627286673 windSum=? windValue=1
404SkOpSegment::debugShowActiveSpans id=4 (123.289001,9.39610004 118.119003,8.07219982) t=0 tEnd=1 windSum=? oppSum=? windValue=1 oppValue=1
405SkOpSegment::debugShowActiveSpans id=7 (0,259.298737 0,353.891998) t=0 tEnd=1 windSum=? windValue=1
406-------------------------------------- calc_angles
407SkOpSegment::sortAngles [8] tStart=0 [15]
408SkOpSegment::sortAngles [8] tStart=0.583904956 [27]
409SkOpAngle::after [8/2] 5/5 tStart=0.583904956 tEnd=0 < [7/23] 23/23 tStart=0 tEnd=1 < [8/3] 21/21 tStart=0.583904956 tEnd=1  F 4
410SkOpAngle::afterPart {{{0,259.298737}, {8.17210034,104.212997}}} id=8
411SkOpAngle::afterPart {{{0,259.298737}, {0,353.891998}}} id=7
412SkOpAngle::afterPart {{{0,259.298737}, {-5.82349988,369.813995}}} id=8
413SkOpSegment::sortAngles [9] tStart=0.0441765002 [28]
414SkOpAngle::after [9/4] 21/21 tStart=0.0441765002 tEnd=0 < [7/24] 7/7 tStart=1 tEnd=0 < [9/5] 5/5 tStart=0.0441765002 tEnd=1  F 4
415SkOpAngle::afterPart {{{0,353.891998}, {-5.82350088,369.813995}}} id=9
416SkOpAngle::afterPart {{{0,353.891998}, {0,259.298737}}} id=7
417SkOpAngle::afterPart {{{0,353.891998}, {125.999999,9.39620018}}} id=9
418SkOpSegment::sortAngles [9] tStart=1 [18]
419SkOpSegment::sortAngles [10] tStart=0.9375 [31]
420SkOpAngle::after [10/7] 17/17 tStart=0.9375 tEnd=1 < [2/19] 17/17 tStart=0.937702598 tEnd=1 < [2/18] 1/1 tStart=0.937702598 tEnd=0.307190555  T 12
421SkOpAngle::afterPart {{{124.700119,9.37180042}, {124.66775,9.37440587}, {124.63531,9.37704855}, {124.602829,9.37969494}}} id=10
422SkOpAngle::afterPart {{{124.700119,9.37180042}, {124.667862,9.37439685}, {124.635532,9.37703031}, {124.603165,9.37966728}}} id=2
423SkOpAngle::afterPart {{{124.700119,9.37180042}, {125.026588,9.34552196}, {125.345738,9.3230648}, {125.624695,9.33975124}}} id=2
424SkOpSegment::sortAngles [11] tStart=0.0625 [33]
425SkOpAngle::after [11/8] 1/1 tStart=0.0625 tEnd=0 < [3/20] 1/1 tStart=0.0627286673 tEnd=0 < [11/9] 17/17 tStart=0.0625 tEnd=0.625  T 12
426SkOpAngle::afterPart {{{124.516441,9.38671017}, {124.545252,9.38438496}, {124.574051,9.382038}, {124.602821,9.37969398}}} id=11
427SkOpAngle::afterPart {{{124.516441,9.38671017}, {124.545364,9.3843762}, {124.574282,9.38202029}, {124.603165,9.37966728}}} id=3
428SkOpAngle::afterPart {{{124.516441,9.38671017}, {124.257148,9.40763702}, {123.997118,9.42683311}, {123.752586,9.42685699}}} id=11
429SkOpSegment::sortAngles [11] tStart=0.625 [35]
430SkOpSegment::sortAngles [11] tStart=1 [22]
431SkOpSegment::sortAngles [13] tStart=0 [25]
432SkOpSegment::sortAngles [13] tStart=1 [26]
433SkOpSegment::sortAngles [2] tStart=0 [3]
434SkOpSegment::sortAngles [2] tStart=0.307190555 [30]
435SkOpSegment::sortAngles [2] tStart=0.937702598 [32]
436SkOpSegment::sortAngles [3] tStart=0.0627286673 [34]
437SkOpSegment::sortAngles [4] tStart=0 [7]
438SkOpSegment::sortAngles [4] tStart=1 [8]
439SkOpSegment::sortAngles [7] tStart=0 [13]
440SkOpSegment::sortAngles [7] tStart=1 [14]
441coinSpan - id=13 t=0 tEnd=1
442coinSpan + id=5 t=0 tEnd=1
443coinSpan - id=4 t=0 tEnd=1
444coinSpan + id=12 t=0 tEnd=1
445coinSpan - id=11 t=0.0625 tEnd=1
446coinSpan + id=3 t=0.0627286673 tEnd=1
447coinSpan - id=2 t=0 tEnd=0.937702598
448coinSpan + id=10 t=0 tEnd=0.9375
449coinSpan - id=9 t=0.0441765002 tEnd=1
450coinSpan + id=1 t=0 tEnd=1
451coinSpan - id=8 t=0 tEnd=0.583904956
452coinSpan + id=6 t=0 tEnd=1
453SkOpSpan::sortableTop dir=kLeft seg=8 t=0.291952478 pt=(4.08605003,181.755859)
454SkOpSpan::sortableTop [0] valid=1 operand=1 span=15 ccw=0 seg=8 {{{8.17210007f, 104.212997f}, {-5.82350016f, 369.813995f}}} t=0.291952478 pt=(4.08605003,181.755859) slope=(-13.9956002,265.600998)
455SkOpSegment::markWinding id=8 (8.17210007,104.212997 -5.82350016,369.813995) t=0 [15] (8.17210007,104.212997) tEnd=0.583904956 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
456SkOpSegment::markWinding id=8 (8.17210007,104.212997 -5.82350016,369.813995) t=0 [15] (8.17210007,104.212997) tEnd=0.583904956 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
457SkOpSegment::markWinding id=13 (118.119003,8.07219982 8.17210007,104.212997) t=0 [25] (118.119003,8.07219982) tEnd=1 newWindSum=1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=1
458SkOpSegment::markWinding id=4 (123.289001,9.39610004 118.119003,8.07219982) t=0 [7] (123.289001,9.39610004) tEnd=1 newWindSum=1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=1
459SkOpSegment::markWinding id=11 (124.602829,9.37972069 124.142509,9.41722488 123.674164,9.45538425 123.289001,9.39620018) t=0.625 [35] (123.752594,9.4268837) tEnd=1 newWindSum=1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=1
460SkOpSegment::markWinding id=11 (124.602829,9.37972069 124.142509,9.41722488 123.674164,9.45538425 123.289001,9.39620018) t=0.0625 [33] (124.516449,9.38673687) tEnd=0.625 newWindSum=1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=1
461SkOpSegment::activeOp id=8 t=0.583904956 tEnd=0 op=sect miFrom=1 miTo=0 suFrom=1 suTo=0 result=1
462SkOpSegment::findNextOp simple
463SkOpSegment::markDone id=8 (8.17210007,104.212997 -5.82350016,369.813995) t=0 [15] (8.17210007,104.212997) tEnd=0.583904956 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
464bridgeOp current id=8 from=(-2.71619996e-07,259.298737) to=(8.17210007,104.212997)
465SkOpSegment::findNextOp simple
466SkOpSegment::markDone id=13 (118.119003,8.07219982 8.17210007,104.212997) t=0 [25] (118.119003,8.07219982) tEnd=1 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
467bridgeOp current id=13 from=(8.17210007,104.212997) to=(118.119003,8.07219982)
468path.moveTo(-2.71619996e-07,259.298737);
469path.lineTo(8.17210007,104.212997);
470SkOpSegment::findNextOp simple
471SkOpSegment::markDone id=4 (123.289001,9.39610004 118.119003,8.07219982) t=0 [7] (123.289001,9.39610004) tEnd=1 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
472bridgeOp current id=4 from=(118.119003,8.07219982) to=(123.289001,9.39610004)
473path.lineTo(118.119003,8.07219982);
474SkOpSegment::findNextOp simple
475SkOpSegment::markDone id=11 (124.602829,9.37972069 124.142509,9.41722488 123.674164,9.45538425 123.289001,9.39620018) t=0.625 [35] (123.752594,9.4268837) tEnd=1 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
476bridgeOp current id=11 from=(123.289001,9.39620018) to=(123.752594,9.4268837)
477path.lineTo(123.289001,9.39610004);
478path.cubicTo(123.433441,9.41839409, 123.589569,9.42689991, 123.752594,9.4268837);
479SkOpSegment::markWinding id=11 (124.602829,9.37972069 124.142509,9.41722488 123.674164,9.45538425 123.289001,9.39620018) t=0 [21] (124.602829,9.37972069) tEnd=0.0625 newWindSum=1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=0
480SkOpSegment::markWinding id=10 (126,9.39620018 125.631981,9.29586983 125.12252,9.3373785 124.602829,9.37972069) t=0.9375 [31] (124.700119,9.37182617) tEnd=1 newWindSum=1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=0
481SkOpSegment::markAngle last segment=10 span=31 windSum=1
482SkOpSegment::markWinding id=3 (124.603165,9.37966728 124.142731,9.41717815 123.674263,9.45534515 123.289001,9.39610004) t=0 [5] (124.603165,9.37966728) tEnd=0.0627286673 newWindSum=1 newOppSum=0 oppSum=? windSum=? windValue=1 oppValue=0
483SkOpSegment::markWinding id=2 (126,9.39610004 125.632057,9.29584408 125.122734,9.33733845 124.603165,9.37966728) t=0.937702598 [32] (124.700119,9.37180042) tEnd=1 newWindSum=1 newOppSum=0 oppSum=? windSum=? windValue=1 oppValue=0
484SkOpSegment::markAngle last segment=2 span=32 windSum=1
485SkOpSegment::findNextOp
486SkOpAngle::dumpOne [11/9] next=11/8 sect=17/17  s=0.0625 [33] e=0.625 [35] sgn=-1 windVal=1 windSum=1 oppVal=1 oppSum=1 operand
487SkOpAngle::dumpOne [11/8] next=3/20 sect=1/1  s=0.0625 [33] e=0 [21] sgn=1 windVal=1 windSum=1 oppVal=0 oppSum=1 operand
488SkOpAngle::dumpOne [3/20] next=11/9 sect=1/1  s=0.0627286673 [34] e=0 [5] sgn=1 windVal=1 windSum=1 oppVal=0 oppSum=0
489SkOpSegment::activeOp id=11 t=0.0625 tEnd=0 op=sect miFrom=1 miTo=1 suFrom=1 suTo=0 result=1
490SkOpSegment::findNextOp chase.append segment=10 span=31 windSum=1
491SkOpSegment::activeOp id=3 t=0.0627286673 tEnd=0 op=sect miFrom=1 miTo=0 suFrom=0 suTo=0 result=0
492SkOpSegment::markDone id=3 (124.603165,9.37966728 124.142731,9.41717815 123.674263,9.45534515 123.289001,9.39610004) t=0 [5] (124.603165,9.37966728) tEnd=0.0627286673 newWindSum=1 newOppSum=0 oppSum=0 windSum=1 windValue=1 oppValue=0
493SkOpSegment::markDone id=2 (126,9.39610004 125.632057,9.29584408 125.122734,9.33733845 124.603165,9.37966728) t=0.937702598 [32] (124.700119,9.37180042) tEnd=1 newWindSum=1 newOppSum=0 oppSum=0 windSum=1 windValue=1 oppValue=0
494SkOpSegment::findNextOp chase.append segment=2 span=32 windSum=1
495SkOpSegment::markDone id=11 (124.602829,9.37972069 124.142509,9.41722488 123.674164,9.45538425 123.289001,9.39620018) t=0.0625 [33] (124.516449,9.38673687) tEnd=0.625 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=1
496SkOpSegment::findNextOp from:[11] to:[11] start=-1132576784 end=-1353716568
497bridgeOp current id=11 from=(123.752594,9.4268837) to=(124.516449,9.38673687)
498path.cubicTo(123.997124,9.42685986, 124.257156,9.40766335, 124.516449,9.38673687);
499SkOpSegment::findNextOp simple
500SkOpSegment::markDone id=11 (124.602829,9.37972069 124.142509,9.41722488 123.674164,9.45538425 123.289001,9.39620018) t=0 [21] (124.602829,9.37972069) tEnd=0.0625 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=0
501bridgeOp current id=11 from=(124.516449,9.38673687) to=(124.602829,9.37972069)
502path.cubicTo(124.545258,9.38441181, 124.574059,9.38206482, 124.602829,9.37972069);
503SkOpSegment::markWinding id=2 (126,9.39610004 125.632057,9.29584408 125.122734,9.33733845 124.603165,9.37966728) t=0.307190555 [30] (125.624695,9.33975124) tEnd=0.937702598 newWindSum=1 newOppSum=-1 oppSum=? windSum=? windValue=1 oppValue=1
504SkOpSegment::markWinding id=2 (126,9.39610004 125.632057,9.29584408 125.122734,9.33733845 124.603165,9.37966728) t=0 [3] (126,9.39610004) tEnd=0.307190555 newWindSum=1 newOppSum=-1 oppSum=? windSum=? windValue=1 oppValue=1
505SkOpSegment::markWinding id=9 (-5.82350016,369.813995 126,9.39620018) t=0.0441765002 [28] (7.26031715e-07,353.891998) tEnd=1 newWindSum=-1 newOppSum=1 oppSum=? windSum=? windValue=1 oppValue=1
506SkOpSegment::markAngle last segment=9 span=28 windSum=-1
507SkOpSegment::findNextOp
508SkOpAngle::dumpOne [10/7] next=2/19 sect=17/17  s=0.9375 [31] e=1 [20] sgn=-1 windVal=1 windSum=1 oppVal=0 oppSum=1 operand
509SkOpAngle::dumpOne [2/19] next=2/18 sect=17/17  s=0.937702598 [32] e=1 [4] sgn=-1 windVal=1 windSum=1 oppVal=0 oppSum=0 done
510SkOpAngle::dumpOne [2/18] next=10/7 sect=1/1  s=0.937702598 [32] e=0.307190555 [30] sgn=1 windVal=1 windSum=1 oppVal=1 oppSum=-1
511SkOpSegment::activeOp id=2 t=0.937702598 tEnd=1 op=sect = result=1
512SkOpSegment::activeOp id=2 t=0.937702598 tEnd=0.307190555 op=sect miFrom=0 miTo=1 suFrom=1 suTo=0 result=0
513SkOpSegment::markDone id=2 (126,9.39610004 125.632057,9.29584408 125.122734,9.33733845 124.603165,9.37966728) t=0.307190555 [30] (125.624695,9.33975124) tEnd=0.937702598 newWindSum=1 newOppSum=-1 oppSum=-1 windSum=1 windValue=1 oppValue=1
514SkOpSegment::markDone id=2 (126,9.39610004 125.632057,9.29584408 125.122734,9.33733845 124.603165,9.37966728) t=0 [3] (126,9.39610004) tEnd=0.307190555 newWindSum=1 newOppSum=-1 oppSum=-1 windSum=1 windValue=1 oppValue=1
515SkOpSegment::markDone id=9 (-5.82350016,369.813995 126,9.39620018) t=0.0441765002 [28] (7.26031715e-07,353.891998) tEnd=1 newWindSum=-1 newOppSum=1 oppSum=1 windSum=-1 windValue=1 oppValue=1
516SkOpSegment::findNextOp chase.append segment=9 span=28 windSum=-1
517SkOpSegment::markDone id=10 (126,9.39620018 125.631981,9.29586983 125.12252,9.3373785 124.602829,9.37972069) t=0.9375 [31] (124.700119,9.37182617) tEnd=1 newWindSum=1 newOppSum=1 oppSum=1 windSum=1 windValue=1 oppValue=0
518SkOpSegment::findNextOp from:[10] to:[2] start=-1132576976 end=-1353719496
519bridgeOp current id=10 from=(124.602829,9.37972069) to=(124.700119,9.37182617)
520path.cubicTo(124.635307,9.37707424, 124.667747,9.37443161, 124.700119,9.37182617);
521SkOpSegment::markWinding id=7 (0,259.298737 0,353.891998) t=0 [13] (0,259.298737) tEnd=1 newWindSum=1 newOppSum=0 oppSum=? windSum=? windValue=1 oppValue=0
522SkOpSegment::markWinding id=9 (-5.82350016,369.813995 126,9.39620018) t=0 [17] (-5.82350016,369.813995) tEnd=0.0441765002 newWindSum=-1 newOppSum=0 oppSum=? windSum=? windValue=1 oppValue=0
523SkOpSegment::markWinding id=8 (8.17210007,104.212997 -5.82350016,369.813995) t=0.583904956 [27] (-2.71619996e-07,259.298737) tEnd=1 newWindSum=-1 newOppSum=0 oppSum=? windSum=? windValue=1 oppValue=0
524SkOpSegment::debugShowActiveSpans id=8 (-2.71619996e-07,259.298737 -5.82350016,369.813995) t=0.583904956 tEnd=1 windSum=-1 oppSum=0 windValue=1 oppValue=0
525SkOpSegment::debugShowActiveSpans id=9 (-5.82350016,369.813995 7.26031715e-07,353.891998) t=0 tEnd=0.0441765002 windSum=-1 oppSum=0 windValue=1 oppValue=0
526SkOpSegment::debugShowActiveSpans id=7 (0,259.298737 0,353.891998) t=0 tEnd=1 windSum=1 oppSum=0 windValue=1 oppValue=0
527SkOpSegment::activeOp id=7 t=1 tEnd=0 op=sect miFrom=1 miTo=0 suFrom=0 suTo=0 result=0
528SkOpSegment::markDone id=7 (0,259.298737 0,353.891998) t=0 [13] (0,259.298737) tEnd=1 newWindSum=1 newOppSum=0 oppSum=0 windSum=1 windValue=1 oppValue=0
529bridgeOp chase.append id=7 windSum=1
530SkOpSegment::debugShowActiveSpans id=8 (-2.71619996e-07,259.298737 -5.82350016,369.813995) t=0.583904956 tEnd=1 windSum=-1 oppSum=0 windValue=1 oppValue=0
531SkOpSegment::debugShowActiveSpans id=9 (-5.82350016,369.813995 7.26031715e-07,353.891998) t=0 tEnd=0.0441765002 windSum=-1 oppSum=0 windValue=1 oppValue=0
532SkOpSegment::activeOp id=8 t=0.583904956 tEnd=1 op=sect miFrom=0 miTo=0 suFrom=1 suTo=0 result=0
533SkOpSegment::markDone id=8 (8.17210007,104.212997 -5.82350016,369.813995) t=0.583904956 [27] (-2.71619996e-07,259.298737) tEnd=1 newWindSum=-1 newOppSum=0 oppSum=0 windSum=-1 windValue=1 oppValue=0
534SkOpSegment::markDone id=9 (-5.82350016,369.813995 126,9.39620018) t=0 [17] (-5.82350016,369.813995) tEnd=0.0441765002 newWindSum=-1 newOppSum=0 oppSum=0 windSum=-1 windValue=1 oppValue=0
535</div>
536
537
538
539    </div>
540
541<script type="text/javascript">
542
543    var testDivs = [
544        bug8380,
545    ];
546
547var decimal_places = 3; // make this 3 to show more precision
548
549var tests = [];
550var testLines = [];
551var testTitles = [];
552var testIndex = 0;
553var ctx;
554
555var xmin, xmax, focusXmin, focusXmax;
556var ymin, ymax, focusYmin, focusYmax;
557var scale;
558var mouseX, mouseY;
559var srcLeft, srcTop;
560var screenWidth, screenHeight;
561var drawnPts, drawnLines, drawnQuads, drawnConics, drawnCubics;
562var curveT = 0;
563
564var pt_labels = 2;
565var collect_bounds = false;
566var control_lines = 0;
567var curve_t = false;
568var debug_xy = 1;
569var focus_enabled = false;
570var focus_on_selection = false;
571var step_limit = 0;
572var draw_active = false;
573var draw_add = false;
574var draw_angle = 0;
575var draw_coincidence = false;
576var draw_deriviatives = 0;
577var draw_direction = false;
578var draw_hints = false;
579var draw_id = false;
580var draw_intersection = 0;
581var draw_intersectT = false;
582var draw_legend = true;
583var draw_log = false;
584var draw_mark = false;
585var draw_midpoint = false;
586var draw_op = 0;
587var draw_sequence = false;
588var draw_sort = 0;
589var draw_top = false;
590var draw_path = 3;
591var draw_computed = 0;
592var retina_scale = !!window.devicePixelRatio;
593
594var activeCount = 0;
595var addCount = 0;
596var angleCount = 0;
597var coinCount = 0;
598var opCount = 0;
599var sectCount = 0;
600var sortCount = 0;
601var topCount = 0;
602var markCount = 0;
603var activeMax = 0;
604var addMax = 0;
605var angleMax = 0;
606var coinMax = 0;
607var sectMax = 0;
608var sectMax2 = 0;
609var sortMax = 0;
610var topMax = 0;
611var markMax = 0;
612var opMax = 0;
613var stepMax = 0;
614var lastIndex = 0;
615var hasPath = false;
616var hasAlignedPath = false;
617var hasComputedPath = false;
618var angleBetween = false;
619var afterIndex = 0;
620
621var firstActiveSpan = -1;
622var logStart = -1;
623var logRange = 0;
624
625var SPAN_ID = 0;
626var SPAN_X1 = SPAN_ID + 1;
627var SPAN_Y1 = SPAN_X1 + 1;
628var SPAN_X2 = SPAN_Y1 + 1;
629var SPAN_Y2 = SPAN_X2 + 1;
630
631var SPAN_L_TX = SPAN_Y2 + 1;
632var SPAN_L_TY = SPAN_L_TX + 1;
633var SPAN_L_OTHER = SPAN_L_TY + 1;
634var SPAN_L_OTHERT = SPAN_L_OTHER + 1;
635var SPAN_L_OTHERI = SPAN_L_OTHERT + 1;
636var SPAN_L_SUM = SPAN_L_OTHERI + 1;
637var SPAN_L_VAL = SPAN_L_SUM + 1;
638var SPAN_L_OPP = SPAN_L_VAL + 1;
639
640var SPAN_X3 = SPAN_Y2 + 1;
641var SPAN_Y3 = SPAN_X3 + 1;
642
643var SPAN_Q_TX = SPAN_Y3 + 1;
644var SPAN_Q_TY = SPAN_Q_TX + 1;
645var SPAN_Q_OTHER = SPAN_Q_TY + 1;
646var SPAN_Q_OTHERT = SPAN_Q_OTHER + 1;
647var SPAN_Q_OTHERI = SPAN_Q_OTHERT + 1;
648var SPAN_Q_SUM = SPAN_Q_OTHERI + 1;
649var SPAN_Q_VAL = SPAN_Q_SUM + 1;
650var SPAN_Q_OPP = SPAN_Q_VAL + 1;
651
652var SPAN_K_W = SPAN_Y3 + 1;
653var SPAN_K_TX = SPAN_K_W + 1;
654var SPAN_K_TY = SPAN_K_TX + 1;
655var SPAN_K_OTHER = SPAN_K_TY + 1;
656var SPAN_K_OTHERT = SPAN_K_OTHER + 1;
657var SPAN_K_OTHERI = SPAN_K_OTHERT + 1;
658var SPAN_K_SUM = SPAN_K_OTHERI + 1;
659var SPAN_K_VAL = SPAN_K_SUM + 1;
660var SPAN_K_OPP = SPAN_K_VAL + 1;
661
662var SPAN_X4 = SPAN_Y3 + 1;
663var SPAN_Y4 = SPAN_X4 + 1;
664
665var SPAN_C_TX = SPAN_Y4 + 1;
666var SPAN_C_TY = SPAN_C_TX + 1;
667var SPAN_C_OTHER = SPAN_C_TY + 1;
668var SPAN_C_OTHERT = SPAN_C_OTHER + 1;
669var SPAN_C_OTHERI = SPAN_C_OTHERT + 1;
670var SPAN_C_SUM = SPAN_C_OTHERI + 1;
671var SPAN_C_VAL = SPAN_C_SUM + 1;
672var SPAN_C_OPP = SPAN_C_VAL + 1;
673
674var ACTIVE_LINE_SPAN =        1;
675var ACTIVE_QUAD_SPAN =        ACTIVE_LINE_SPAN + 1;
676var ACTIVE_CONIC_SPAN =       ACTIVE_QUAD_SPAN + 1;
677var ACTIVE_CUBIC_SPAN =       ACTIVE_CONIC_SPAN + 1;
678
679var ADD_MOVETO =              ACTIVE_CUBIC_SPAN + 1;
680var ADD_LINETO =              ADD_MOVETO + 1;
681var ADD_QUADTO =              ADD_LINETO + 1;
682var ADD_CONICTO =             ADD_QUADTO + 1;
683var ADD_CUBICTO =             ADD_CONICTO + 1;
684var ADD_CLOSE =               ADD_CUBICTO + 1;
685var ADD_FILL =                ADD_CLOSE + 1;
686
687var PATH_LINE =               ADD_FILL + 1;
688var PATH_QUAD =               PATH_LINE + 1;
689var PATH_CONIC =              PATH_QUAD + 1;
690var PATH_CUBIC =              PATH_CONIC + 1;
691
692var INTERSECT_LINE =          PATH_CUBIC + 1;
693var INTERSECT_LINE_2 =        INTERSECT_LINE + 1;
694var INTERSECT_LINE_NO =       INTERSECT_LINE_2 + 1;
695var INTERSECT_QUAD_LINE =     INTERSECT_LINE_NO + 1;
696var INTERSECT_QUAD_LINE_2 =   INTERSECT_QUAD_LINE + 1;
697var INTERSECT_QUAD_LINE_NO =  INTERSECT_QUAD_LINE_2 + 1;
698var INTERSECT_QUAD =          INTERSECT_QUAD_LINE_NO + 1;
699var INTERSECT_QUAD_2 =        INTERSECT_QUAD + 1;
700var INTERSECT_QUAD_NO =       INTERSECT_QUAD_2 + 1;
701var INTERSECT_CONIC_LINE =    INTERSECT_QUAD_NO + 1;
702var INTERSECT_CONIC_LINE_2 =  INTERSECT_CONIC_LINE + 1;
703var INTERSECT_CONIC_LINE_NO = INTERSECT_CONIC_LINE_2 + 1;
704var INTERSECT_CONIC_QUAD =    INTERSECT_CONIC_LINE_NO + 1;
705var INTERSECT_CONIC_QUAD_2 =  INTERSECT_CONIC_QUAD + 1;
706var INTERSECT_CONIC_QUAD_3 =  INTERSECT_CONIC_QUAD_2 + 1;
707var INTERSECT_CONIC_QUAD_4 =  INTERSECT_CONIC_QUAD_3 + 1;
708var INTERSECT_CONIC_QUAD_NO = INTERSECT_CONIC_QUAD_4 + 1;
709var INTERSECT_CONIC =         INTERSECT_CONIC_QUAD_NO + 1;
710var INTERSECT_CONIC_2 =       INTERSECT_CONIC + 1;
711var INTERSECT_CONIC_NO =      INTERSECT_CONIC_2 + 1;
712var INTERSECT_SELF_CUBIC =    INTERSECT_CONIC_NO + 1;
713var INTERSECT_SELF_CUBIC_NO = INTERSECT_SELF_CUBIC + 1;
714var INTERSECT_CUBIC_LINE =    INTERSECT_SELF_CUBIC_NO + 1;
715var INTERSECT_CUBIC_LINE_2 =  INTERSECT_CUBIC_LINE + 1;
716var INTERSECT_CUBIC_LINE_3 =  INTERSECT_CUBIC_LINE_2 + 1;
717var INTERSECT_CUBIC_LINE_NO = INTERSECT_CUBIC_LINE_3 + 1;
718var INTERSECT_CUBIC_QUAD =    INTERSECT_CUBIC_LINE_NO + 1;
719var INTERSECT_CUBIC_QUAD_2 =  INTERSECT_CUBIC_QUAD + 1;
720var INTERSECT_CUBIC_QUAD_3 =  INTERSECT_CUBIC_QUAD_2 + 1;
721var INTERSECT_CUBIC_QUAD_4 =  INTERSECT_CUBIC_QUAD_3 + 1;
722var INTERSECT_CUBIC_QUAD_NO = INTERSECT_CUBIC_QUAD_4 + 1;
723var INTERSECT_CUBIC =         INTERSECT_CUBIC_QUAD_NO + 1;
724var INTERSECT_CUBIC_2 =       INTERSECT_CUBIC + 1;
725var INTERSECT_CUBIC_3 =       INTERSECT_CUBIC_2 + 1;
726var INTERSECT_CUBIC_4 =       INTERSECT_CUBIC_3 + 1;
727// FIXME: add cubic 5- 9
728var INTERSECT_CUBIC_NO =      INTERSECT_CUBIC_4 + 1;
729
730var SORT_UNARY =              INTERSECT_CUBIC_NO + 1;
731var SORT_BINARY =             SORT_UNARY + 1;
732
733var OP_DIFFERENCE =           SORT_BINARY + 1;
734var OP_INTERSECT =            OP_DIFFERENCE + 1;
735var OP_UNION =                OP_INTERSECT + 1;
736var OP_XOR =                  OP_UNION + 1;
737
738var MARK_LINE =               OP_XOR + 1;
739var MARK_QUAD =               MARK_LINE + 1;
740var MARK_CONIC =              MARK_QUAD + 1;
741var MARK_CUBIC =              MARK_CONIC + 1;
742var MARK_DONE_LINE =          MARK_CUBIC + 1;
743var MARK_DONE_QUAD =          MARK_DONE_LINE + 1;
744var MARK_DONE_CONIC =         MARK_DONE_QUAD + 1;
745var MARK_DONE_CUBIC =         MARK_DONE_CONIC + 1;
746var MARK_UNSORTABLE_LINE =    MARK_DONE_CUBIC + 1;
747var MARK_UNSORTABLE_QUAD =    MARK_UNSORTABLE_LINE + 1;
748var MARK_UNSORTABLE_CONIC =   MARK_UNSORTABLE_QUAD + 1;
749var MARK_UNSORTABLE_CUBIC =   MARK_UNSORTABLE_CONIC + 1;
750var MARK_SIMPLE_LINE =        MARK_UNSORTABLE_CUBIC + 1;
751var MARK_SIMPLE_QUAD =        MARK_SIMPLE_LINE + 1;
752var MARK_SIMPLE_CONIC =       MARK_SIMPLE_QUAD + 1;
753var MARK_SIMPLE_CUBIC =       MARK_SIMPLE_CONIC + 1;
754var MARK_SIMPLE_DONE_LINE =   MARK_SIMPLE_CUBIC + 1;
755var MARK_SIMPLE_DONE_QUAD =   MARK_SIMPLE_DONE_LINE + 1;
756var MARK_SIMPLE_DONE_CONIC =  MARK_SIMPLE_DONE_QUAD + 1;
757var MARK_SIMPLE_DONE_CUBIC =  MARK_SIMPLE_DONE_CONIC + 1;
758var MARK_DONE_UNARY_LINE =    MARK_SIMPLE_DONE_CUBIC + 1;
759var MARK_DONE_UNARY_QUAD =    MARK_DONE_UNARY_LINE + 1;
760var MARK_DONE_UNARY_CONIC =   MARK_DONE_UNARY_QUAD + 1;
761var MARK_DONE_UNARY_CUBIC =   MARK_DONE_UNARY_CONIC + 1;
762var MARK_ANGLE_LAST =         MARK_DONE_UNARY_CUBIC + 1;
763
764var COMPUTED_SET_1 =          MARK_ANGLE_LAST + 1;
765var COMPUTED_SET_2 =          COMPUTED_SET_1 + 1;
766
767var ANGLE_AFTER =             COMPUTED_SET_2 + 1;
768var ANGLE_AFTERPART =         ANGLE_AFTER + 1;
769
770var ACTIVE_OP =               ANGLE_AFTERPART + 1;
771
772var COIN_MAIN_SPAN =          ACTIVE_OP + 1;
773var COIN_OPP_SPAN =           COIN_MAIN_SPAN + 1;
774
775var FRAG_TYPE_LAST =          COIN_OPP_SPAN;
776
777var REC_TYPE_UNKNOWN = -1;
778var REC_TYPE_PATH = 0;
779var REC_TYPE_PATH2 = 1;
780var REC_TYPE_SECT = 2;
781var REC_TYPE_ACTIVE = 3;
782var REC_TYPE_ADD = 4;
783var REC_TYPE_SORT = 5;
784var REC_TYPE_OP = 6;
785var REC_TYPE_MARK = 7;
786var REC_TYPE_COMPUTED = 8;
787var REC_TYPE_COIN = 9;
788var REC_TYPE_ANGLE = 10;
789var REC_TYPE_ACTIVE_OP = 11;
790var REC_TYPE_AFTERPART = 12;
791var REC_TYPE_TOP = 13;
792var REC_TYPE_COINCIDENCE = 14;
793var REC_TYPE_ALIGNED = 15;
794var REC_TYPE_LAST = REC_TYPE_ALIGNED;
795
796function strs_to_nums(strs) {
797    var result = [];
798    for (var idx = 1; idx < strs.length; ++idx) {
799        var str = strs[idx];
800        var num = parseFloat(str);
801        if (isNaN(num)) {
802            result.push(str);
803        } else {
804            result.push(num);
805        }
806    }
807    return result;
808}
809
810function filter_str_by(id, str, regex, array) {
811    if (regex.test(str)) {
812        var strs = regex.exec(str);
813        var result = strs_to_nums(strs);
814        array.push(id);
815        array.push(result);
816        return true;
817    }
818    return false;
819}
820
821function construct_regexp2(pattern) {
822    var escape = pattern.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');
823    escape = escape.replace(/UNSORTABLE/g, "\\*\\*\\* UNSORTABLE \\*\\*\\*");
824    escape = escape.replace(/CUBIC_VAL/g, "\\(P_VAL P_VAL P_VAL P_VAL\\)");
825    escape = escape.replace(/CONIC_VAL/g, "\\(P_VAL P_VAL P_VAL W_VAL\\)");
826    escape = escape.replace(/QUAD_VAL/g, "\\(P_VAL P_VAL P_VAL\\)");
827    escape = escape.replace(/LINE_VAL/g, "\\(P_VAL P_VAL\\)");
828    escape = escape.replace(/FILL_TYPE/g, "SkPath::k[a-zA-Z]+_FillType");
829    escape = escape.replace(/PTR_VAL/g, "0x[0-9A-F]+");
830    escape = escape.replace(/PT_VAL/g, "\\(P_VAL\\)");
831    escape = escape.replace(/P_VAL/g, "(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)[Ff]?, ?(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)[Ff]?");
832    escape = escape.replace(/T_VAL/g, "(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)");
833    escape = escape.replace(/W_VAL/g, "(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)[Ff]?");
834    escape = escape.replace(/PATH/g, "pathB?");
835    escape = escape.replace(/IDX/g, "(-?\\d+)");
836    escape = escape.replace(/NUM/g, "(-?\\d+)");
837    escape = escape.replace(/OPT/g, "(\\?|-?\\d+)");
838    return new RegExp(escape, 'i');
839}
840
841function construct_regexp2c(pattern) {
842    var escape = pattern.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');
843    escape = escape.replace(/UNSORTABLE/g, "\\*\\*\\* UNSORTABLE \\*\\*\\*");
844    escape = escape.replace(/CUBIC_VAL/g, "(?:\\$\\d = )?\\{\\{\\{P_VAL\\}, \\{P_VAL\\}, \\{P_VAL\\}, \\{P_VAL\\}\\}\\}");
845    escape = escape.replace(/CONIC_VAL/g, "(?:\\$\\d = )?\\{\\{\\{\\{P_VAL\\}, \\{P_VAL\\}, \\{P_VAL\\}\\}\\}, W_VAL\\}");
846    escape = escape.replace(/QUAD_VAL/g, "(?:\\$\\d = )?\\{\\{\\{P_VAL\\}, \\{P_VAL\\}, \\{P_VAL\\}\\}\\}");
847    escape = escape.replace(/LINE_VAL/g, "(?:\\$\\d = )?\\{\\{\\{P_VAL\\}, \\{P_VAL\\}\\}\\}");
848    escape = escape.replace(/FILL_TYPE/g, "SkPath::k[a-zA-Z]+_FillType");
849    escape = escape.replace(/PTR_VAL/g, "0x[0-9A-F]+");
850    escape = escape.replace(/PT_VAL/g, "\\{\\{P_VAL\\}\\}");
851    escape = escape.replace(/P_VAL/g, "(?:f?[xX] = )?(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)[Ff]?, *(?: f?[yY] = )?(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)[Ff]?");
852    escape = escape.replace(/T_VAL/g, "(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)");
853    escape = escape.replace(/W_VAL/g, "(-?\\d+\\.?\\d*(?:e[+-]?\\d+)?)[Ff]?");
854    escape = escape.replace(/OPER/g, "[a-z]+");
855    escape = escape.replace(/PATH/g, "pathB?");
856    escape = escape.replace(/T_F/g, "([TF])");
857    escape = escape.replace(/IDX/g, "(-?\\d+)");
858    escape = escape.replace(/NUM/g, "(-?\\d+)");
859    escape = escape.replace(/OPT/g, "(\\?|-?\\d+)");
860    return new RegExp(escape, 'i');
861}
862
863function match_regexp(str, lineNo, array, id, pattern) {
864    var regex = construct_regexp2(pattern);
865    if (filter_str_by(id, str, regex, array)) {
866        return true;
867    }
868    regex = construct_regexp2c(pattern);
869    return filter_str_by(id, str, regex, array);
870}
871
872function endsWith(str, suffix) {
873    return str.indexOf(suffix, str.length - suffix.length) !== -1;
874}
875
876function parse_all(test) {
877    var lines = test.match(/[^\r\n]+/g);
878    var records = []; // a rec can be the original paths, a set of intersections, a set of active spans, a sort, or a path add
879    var record = [];
880    var recType = REC_TYPE_UNKNOWN;
881    var lastLineNo;
882    var moveX, moveY;
883    for (var lineNo = 0; lineNo < lines.length; ++lineNo) {
884        var line = lines[lineNo];
885        if (line.length == 0) {
886            continue;
887        }
888        var opStart = "SkOpSegment::";
889        if (line.lastIndexOf(opStart, 0) === 0) {
890            line = line.substr(opStart.length);
891        }
892        var angleStart = "SkOpAngle::";
893        if (line.lastIndexOf(angleStart, 0) === 0) {
894            line = line.substr(angleStart.length);
895        }
896        var coinStart = "SkOpCoincidence::";
897        if (line.lastIndexOf(coinStart, 0) === 0) {
898            line = line.substr(coinStart.length);
899        }
900        var type = line.lastIndexOf("debugShowActiveSpans", 0) === 0 ? REC_TYPE_ACTIVE
901                : line.lastIndexOf("debugShowCoincidence", 0) === 0 ? REC_TYPE_COINCIDENCE
902                : line.lastIndexOf("((SkOpSegment*)", 0) === 0 ? REC_TYPE_PATH2
903                : line.lastIndexOf("debugShowTs", 0) === 0 ? REC_TYPE_COIN
904                : line.lastIndexOf("afterPart", 0) === 0 ? REC_TYPE_AFTERPART
905                : line.lastIndexOf("debugShow", 0) === 0 ? REC_TYPE_SECT
906                : line.lastIndexOf("activeOp", 0) === 0 ? REC_TYPE_ACTIVE_OP
907                : line.lastIndexOf("computed", 0) === 0 ? REC_TYPE_COMPUTED
908                : line.lastIndexOf("debugOne", 0) === 0 ? REC_TYPE_SORT
909                : line.lastIndexOf("aligned=", 0) === 0 ? REC_TYPE_ALIGNED
910                : line.lastIndexOf("dumpOne", 0) === 0 ? REC_TYPE_SORT
911                : line.lastIndexOf("findTop", 0) === 0 ? REC_TYPE_TOP
912                : line.lastIndexOf("pathB.", 0) === 0 ? REC_TYPE_ADD
913                : line.lastIndexOf("path.", 0) === 0 ? REC_TYPE_ADD
914                : line.lastIndexOf("after", 0) === 0 ? REC_TYPE_ANGLE
915                : line.lastIndexOf("mark", 0) === 0 ? REC_TYPE_MARK
916                : line.lastIndexOf("  {{", 0) === 0 ? REC_TYPE_COMPUTED
917                : line.lastIndexOf("seg=", 0) === 0 ? REC_TYPE_PATH
918                : line.lastIndexOf("op", 0) === 0 ? REC_TYPE_OP
919                : line.lastIndexOf("$", 0) === 0 ? REC_TYPE_PATH
920                : REC_TYPE_UNKNOWN;
921        if (recType != type || recType == REC_TYPE_ADD || recType == REC_TYPE_SECT
922                || recType == REC_TYPE_ACTIVE_OP || recType == REC_TYPE_ANGLE) {
923            if (recType != REC_TYPE_UNKNOWN) {
924                records.push(recType);
925                records.push(lastLineNo);
926                records.push(record);
927            }
928            record = [];
929            recType = type;
930            lastLineNo = lineNo;
931        }
932        var found = false;
933        switch (recType) {
934            case REC_TYPE_ACTIVE:
935                found = match_regexp(line, lineNo, record, ACTIVE_LINE_SPAN, "debugShowActiveSpans" +
936" id=IDX LINE_VAL t=T_VAL tEnd=T_VAL windSum=OPT windValue=IDX"
937                ) || match_regexp(line, lineNo, record, ACTIVE_QUAD_SPAN, "debugShowActiveSpans" +
938" id=IDX QUAD_VAL t=T_VAL tEnd=T_VAL windSum=OPT windValue=IDX"
939                ) || match_regexp(line, lineNo, record, ACTIVE_CONIC_SPAN, "debugShowActiveSpans" +
940" id=IDX CONIC_VAL t=T_VAL tEnd=T_VAL windSum=OPT windValue=IDX"
941                ) || match_regexp(line, lineNo, record, ACTIVE_CUBIC_SPAN, "debugShowActiveSpans" +
942" id=IDX CUBIC_VAL t=T_VAL tEnd=T_VAL windSum=OPT windValue=IDX"
943                ) || match_regexp(line, lineNo, record, ACTIVE_LINE_SPAN, "debugShowActiveSpans" +
944" id=IDX LINE_VAL t=T_VAL tEnd=T_VAL windSum=OPT oppSum=OPT windValue=IDX oppValue=NUM"
945                ) || match_regexp(line, lineNo, record, ACTIVE_QUAD_SPAN, "debugShowActiveSpans" +
946" id=IDX QUAD_VAL t=T_VAL tEnd=T_VAL windSum=OPT oppSum=OPT windValue=IDX oppValue=NUM"
947                ) || match_regexp(line, lineNo, record, ACTIVE_CONIC_SPAN, "debugShowActiveSpans" +
948" id=IDX CONIC_VAL t=T_VAL tEnd=T_VAL windSum=OPT oppSum=OPT windValue=IDX oppValue=NUM"
949                ) || match_regexp(line, lineNo, record, ACTIVE_CUBIC_SPAN, "debugShowActiveSpans" +
950" id=IDX CUBIC_VAL t=T_VAL tEnd=T_VAL windSum=OPT oppSum=OPT windValue=IDX oppValue=NUM"
951                );
952                break;
953            case REC_TYPE_ACTIVE_OP:
954                found = match_regexp(line, lineNo, record, ACTIVE_OP, "activeOp" +
955" id=IDX t=T_VAL tEnd=T_VAL op=OPER miFrom=NUM miTo=NUM suFrom=NUM suTo=NUM result=IDX"
956                );
957                break;
958            case REC_TYPE_ADD:
959                if (match_regexp(line, lineNo, record, ADD_MOVETO, "PATH.moveTo(P_VAL);")) {
960                    moveX = record[1][0];
961                    moveY = record[1][1];
962                    found = true;
963                } else if (match_regexp(line, lineNo, record, ADD_LINETO, "PATH.lineTo(P_VAL);")) {
964                    record[1].unshift(moveY);
965                    record[1].unshift(moveX);
966                    moveX = record[1][2];
967                    moveY = record[1][3];
968                    found = true;
969                } else if (match_regexp(line, lineNo, record, ADD_QUADTO, "PATH.quadTo(P_VAL, P_VAL);")) {
970                    record[1].unshift(moveY);
971                    record[1].unshift(moveX);
972                    moveX = record[1][4];
973                    moveY = record[1][5];
974                    found = true;
975                } else if (match_regexp(line, lineNo, record, ADD_CONICTO, "PATH.conicTo(P_VAL, P_VAL, T_VAL);")) {
976                    record[1].unshift(moveY);
977                    record[1].unshift(moveX);
978                    moveX = record[1][4];
979                    moveY = record[1][5];
980                    found = true;
981                } else if (match_regexp(line, lineNo, record, ADD_CUBICTO, "PATH.cubicTo(P_VAL, P_VAL, P_VAL);")) {
982                    record[1].unshift(moveY);
983                    record[1].unshift(moveX);
984                    moveX = record[1][6];
985                    moveY = record[1][7];
986                    found = true;
987                } else if (match_regexp(line, lineNo, record, ADD_FILL, "PATH.setFillType(FILL_TYPE);")) {
988                    found = true;
989                } else {
990                    found = match_regexp(line, lineNo, record, ADD_CLOSE, "PATH.close();");
991                }
992                break;
993            case REC_TYPE_AFTERPART:
994                found = match_regexp(line, lineNo, record, PATH_LINE, "afterPart LINE_VAL id=IDX")
995                    || match_regexp(line, lineNo, record, PATH_QUAD, "afterPart QUAD_VAL id=IDX")
996                    || match_regexp(line, lineNo, record, PATH_CONIC, "afterPart CONIC_VAL id=IDX")
997                    || match_regexp(line, lineNo, record, PATH_CUBIC, "afterPart CUBIC_VAL id=IDX")
998                break;
999            case REC_TYPE_ALIGNED:
1000                found = match_regexp(line, lineNo, record, PATH_LINE, "aligned=IDX LINE_VAL"
1001                ) || match_regexp(line, lineNo, record, PATH_QUAD, "aligned=IDX QUAD_VAL"
1002                ) || match_regexp(line, lineNo, record, PATH_CONIC, "aligned=IDX CONIC_VAL"
1003                ) || match_regexp(line, lineNo, record, PATH_CUBIC, "aligned=IDX CUBIC_VAL"
1004                );
1005                break;
1006            case REC_TYPE_ANGLE:
1007                found = match_regexp(line, lineNo, record, ANGLE_AFTER, "after " +
1008"[IDX/IDX] NUM/NUM tStart=T_VAL tEnd=T_VAL < [IDX/IDX] NUM/NUM tStart=T_VAL tEnd=T_VAL < [IDX/IDX] NUM/NUM tStart=T_VAL tEnd=T_VAL  T_F IDX");
1009                break;
1010            case REC_TYPE_COIN:
1011                found = true;
1012                break;
1013            case REC_TYPE_COINCIDENCE:
1014                found = match_regexp(line, lineNo, record, COIN_MAIN_SPAN, "debugShowCoincidence" +
1015" + id=IDX t=T_VAL tEnd=T_VAL"
1016                ) || match_regexp(line, lineNo, record, COIN_OPP_SPAN, "debugShowCoincidence" +
1017" - id=IDX t=T_VAL tEnd=T_VAL"
1018                );
1019                break;
1020            case REC_TYPE_COMPUTED:
1021                found = line ==  "computed quadratics given"
1022                  || match_regexp(line, lineNo, record, COMPUTED_SET_1, "computed quadratics set 1"
1023                ) || match_regexp(line, lineNo, record, COMPUTED_SET_2, "computed quadratics set 2"
1024                ) || match_regexp(line, lineNo, record, PATH_QUAD, "  QUAD_VAL,"
1025                ) || match_regexp(line, lineNo, record, PATH_CONIC, "  CONIC_VAL,"
1026                ) || match_regexp(line, lineNo, record, PATH_CUBIC, "  CUBIC_VAL,"
1027                );
1028                break;
1029            case REC_TYPE_PATH:
1030                found = match_regexp(line, lineNo, record, PATH_LINE, "seg=IDX LINE_VAL"
1031                ) || match_regexp(line, lineNo, record, PATH_QUAD, "seg=IDX QUAD_VAL"
1032                ) || match_regexp(line, lineNo, record, PATH_CONIC, "seg=IDX CONIC_VAL"
1033                ) || match_regexp(line, lineNo, record, PATH_CUBIC, "seg=IDX CUBIC_VAL"
1034                );
1035                break;
1036            case REC_TYPE_PATH2:
1037                found = match_regexp(line, lineNo, record, PATH_LINE, "((SkOpSegment*) PTR_VAL) [IDX] {LINE_VAL}"
1038                ) || match_regexp(line, lineNo, record, PATH_QUAD, "((SkOpSegment*) PTR_VAL) [IDX] {QUAD_VAL}"
1039                ) || match_regexp(line, lineNo, record, PATH_CONIC, "((SkOpSegment*) PTR_VAL) [IDX] {CONIC_VAL}"
1040                ) || match_regexp(line, lineNo, record, PATH_CUBIC, "((SkOpSegment*) PTR_VAL) [IDX] {CUBIC_VAL}"
1041                );
1042                break;
1043            case REC_TYPE_SECT:
1044                found = match_regexp(line, lineNo, record, INTERSECT_LINE, "debugShowLineIntersection" +
1045" wtTs[0]=T_VAL LINE_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL"
1046                ) || match_regexp(line, lineNo, record, INTERSECT_LINE_2, "debugShowLineIntersection" +
1047" wtTs[0]=T_VAL LINE_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL wnTs[1]=T_VAL"
1048                ) || match_regexp(line, lineNo, record, INTERSECT_LINE_NO, "debugShowLineIntersection" +
1049" no intersect LINE_VAL LINE_VAL"
1050                ) || match_regexp(line, lineNo, record, INTERSECT_QUAD_LINE, "debugShowQuadLineIntersection" +
1051" wtTs[0]=T_VAL QUAD_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL"
1052                ) || match_regexp(line, lineNo, record, INTERSECT_QUAD_LINE_2, "debugShowQuadLineIntersection" +
1053" wtTs[0]=T_VAL QUAD_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL wnTs[1]=T_VAL"
1054                ) || match_regexp(line, lineNo, record, INTERSECT_QUAD_LINE_NO, "debugShowQuadLineIntersection" +
1055" no intersect QUAD_VAL LINE_VAL"
1056                ) || match_regexp(line, lineNo, record, INTERSECT_QUAD, "debugShowQuadIntersection" +
1057" wtTs[0]=T_VAL QUAD_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL"
1058                ) || match_regexp(line, lineNo, record, INTERSECT_QUAD_2, "debugShowQuadIntersection" +
1059" wtTs[0]=T_VAL QUAD_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL"
1060                ) || match_regexp(line, lineNo, record, INTERSECT_QUAD_NO, "debugShowQuadIntersection" +
1061" no intersect QUAD_VAL QUAD_VAL"
1062
1063                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_LINE, "debugShowConicLineIntersection" +
1064" wtTs[0]=T_VAL CONIC_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL"
1065                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_LINE_2, "debugShowConicLineIntersection" +
1066" wtTs[0]=T_VAL CONIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL wnTs[1]=T_VAL"
1067                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_LINE_NO, "debugShowConicLineIntersection" +
1068" no intersect CONIC_VAL LINE_VAL"
1069
1070                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_QUAD, "debugShowConicQuadIntersection" +
1071" wtTs[0]=T_VAL CONIC_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL"
1072                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_QUAD_2, "debugShowConicQuadIntersection" +
1073" wtTs[0]=T_VAL CONIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL"
1074                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_QUAD_3, "debugShowConicQuadIntersection" +
1075" wtTs[0]=T_VAL CONIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL"
1076                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_QUAD_4, "debugShowConicQuadIntersection" +
1077" wtTs[0]=T_VAL CONIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL PT_VAL wtTs[3]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL wnTs[3]=T_VAL"
1078                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_QUAD_NO, "debugShowConicQuadIntersection" +
1079" no intersect CONIC_VAL QUAD_VAL"
1080
1081                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC, "debugShowConicIntersection" +
1082" wtTs[0]=T_VAL CONIC_VAL PT_VAL wnTs[0]=T_VAL CONIC_VAL"
1083                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_2, "debugShowConicIntersection" +
1084" wtTs[0]=T_VAL CONIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL CONIC_VAL wnTs[1]=T_VAL"
1085                ) || match_regexp(line, lineNo, record, INTERSECT_CONIC_NO, "debugShowConicIntersection" +
1086" no intersect CONIC_VAL CONIC_VAL"
1087                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_LINE, "debugShowCubicLineIntersection" +
1088" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL"
1089                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_LINE_2, "debugShowCubicLineIntersection" +
1090" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL wnTs[1]=T_VAL"
1091                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_LINE_3, "debugShowCubicLineIntersection" +
1092" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL PT_VAL wnTs[0]=T_VAL LINE_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL"
1093                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_LINE_NO, "debugShowCubicLineIntersection" +
1094" no intersect CUBIC_VAL LINE_VAL"
1095                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_QUAD, "debugShowCubicQuadIntersection" +
1096" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL"
1097                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_QUAD_2, "debugShowCubicQuadIntersection" +
1098" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL"
1099                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_QUAD_3, "debugShowCubicQuadIntersection" +
1100" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL"
1101                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_QUAD_4, "debugShowCubicQuadIntersection" +
1102" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL wtTs[3]=T_VAL PT_VAL wnTs[0]=T_VAL QUAD_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL wnTs[3]=T_VAL"
1103                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_QUAD_NO, "debugShowCubicQuadIntersection" +
1104" no intersect CUBIC_VAL QUAD_VAL"
1105                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC, "debugShowCubicIntersection" +
1106" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wnTs[0]=T_VAL CUBIC_VAL"
1107                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_2, "debugShowCubicIntersection" +
1108" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wnTs[0]=T_VAL CUBIC_VAL wnTs[1]=T_VAL"
1109                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_3, "debugShowCubicIntersection" +
1110" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL PT_VAL wnTs[0]=T_VAL CUBIC_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL"
1111                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_4, "debugShowCubicIntersection" +
1112" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL PT_VAL wtTs[2]=T_VAL PT_VAL wtTs[3]=T_VAL PT_VAL wnTs[0]=T_VAL CUBIC_VAL wnTs[1]=T_VAL wnTs[2]=T_VAL wnTs[3]=T_VAL"
1113                ) || match_regexp(line, lineNo, record, INTERSECT_CUBIC_NO, "debugShowCubicIntersection" +
1114" no intersect CUBIC_VAL CUBIC_VAL"
1115                ) || match_regexp(line, lineNo, record, INTERSECT_SELF_CUBIC, "debugShowCubicIntersection" +
1116" wtTs[0]=T_VAL CUBIC_VAL PT_VAL wtTs[1]=T_VAL"
1117                ) || match_regexp(line, lineNo, record, INTERSECT_SELF_CUBIC_NO, "debugShowCubicIntersection" +
1118" no self intersect CUBIC_VAL"
1119                );
1120                break;
1121            case REC_TYPE_SORT:
1122                var hasDone = / done/.test(line);
1123                var hasUnorderable = / unorderable/.test(line);
1124                var hasSmall = / small/.test(line);
1125                var hasTiny = / tiny/.test(line);
1126                var hasOperand = / operand/.test(line);
1127                var hasStop = / stop/.test(line);
1128                line.replace(/[ a-z]+$/, "");
1129                found = match_regexp(line, lineNo, record, SORT_UNARY, "debugOne" +
1130" [IDX/IDX] next=IDX/IDX sect=IDX/IDX  s=T_VAL [IDX] e=T_VAL [IDX] sgn=NUM windVal=IDX windSum=OPT"
1131                ) || match_regexp(line, lineNo, record, SORT_BINARY, "debugOne" +
1132" [IDX/IDX] next=IDX/IDX sect=IDX/IDX  s=T_VAL [IDX] e=T_VAL [IDX] sgn=NUM windVal=IDX windSum=OPT oppVal=IDX oppSum=OPT"
1133                ) || match_regexp(line, lineNo, record, SORT_UNARY, "dumpOne" +
1134" [IDX/IDX] next=IDX/IDX sect=NUM/NUM  s=T_VAL [IDX] e=T_VAL [IDX] sgn=NUM windVal=IDX windSum=OPT"
1135                ) || match_regexp(line, lineNo, record, SORT_BINARY, "dumpOne" +
1136" [IDX/IDX] next=IDX/IDX sect=NUM/NUM  s=T_VAL [IDX] e=T_VAL [IDX] sgn=NUM windVal=IDX windSum=OPT oppVal=IDX oppSum=OPT"
1137                );
1138                if (found) {
1139                    record[1].push(hasDone);
1140                    record[1].push(hasUnorderable);
1141                    record[1].push(hasSmall);
1142                    record[1].push(hasTiny);
1143                    record[1].push(hasOperand);
1144                    record[1].push(hasStop);
1145                }
1146                break;
1147            case REC_TYPE_TOP:
1148                found = match_regexp(line, lineNo, record, ACTIVE_OP, "findTop" +
1149" id=IDX s=T_VAL e=T_VAL cw=NUM swap=NUM inflections=NUM monotonic=NUM"
1150                ) || match_regexp(line, lineNo, record, ACTIVE_OP, "findTop" +
1151" id=IDX s=T_VAL e=T_VAL (-) cw=NUM swap=NUM inflections=NUM monotonic=NUM"
1152                ) || match_regexp(line, lineNo, record, ACTIVE_OP, "findTop" +
1153" id=IDX s=T_VAL e=T_VAL (+) cw=NUM swap=NUM inflections=NUM monotonic=NUM"
1154                );
1155                break;
1156            case REC_TYPE_MARK:
1157                found = match_regexp(line, lineNo, record, MARK_LINE, "markWinding" +
1158" id=IDX LINE_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX"
1159                ) || match_regexp(line, lineNo, record, MARK_QUAD, "markWinding" +
1160" id=IDX QUAD_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX"
1161                ) || match_regexp(line, lineNo, record, MARK_CONIC, "markWinding" +
1162" id=IDX CONIC_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX"
1163                ) || match_regexp(line, lineNo, record, MARK_CUBIC, "markWinding" +
1164" id=IDX CUBIC_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX"
1165                ) || match_regexp(line, lineNo, record, MARK_DONE_LINE, "markDone" +
1166" id=IDX LINE_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=OPT newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX oppValue=OPT"
1167                ) || match_regexp(line, lineNo, record, MARK_DONE_QUAD, "markDone" +
1168" id=IDX QUAD_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=OPT newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX oppValue=OPT"
1169                ) || match_regexp(line, lineNo, record, MARK_DONE_CONIC, "markDone" +
1170" id=IDX CONIC_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=OPT newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX oppValue=OPT"
1171                ) || match_regexp(line, lineNo, record, MARK_DONE_CUBIC, "markDone" +
1172" id=IDX CUBIC_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=OPT newOppSum=OPT oppSum=OPT windSum=OPT windValue=IDX oppValue=OPT"
1173                ) || match_regexp(line, lineNo, record, MARK_SIMPLE_LINE, "markWinding" +
1174" id=IDX LINE_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM windSum=OPT windValue=IDX"
1175                ) || match_regexp(line, lineNo, record, MARK_SIMPLE_QUAD, "markWinding" +
1176" id=IDX QUAD_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM windSum=OPT windValue=IDX"
1177                ) || match_regexp(line, lineNo, record, MARK_SIMPLE_CONIC, "markWinding" +
1178" id=IDX CONIC_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM windSum=OPT windValue=IDX"
1179                ) || match_regexp(line, lineNo, record, MARK_SIMPLE_CUBIC, "markWinding" +
1180" id=IDX CUBIC_VAL t=T_VAL [IDX] PT_VAL tEnd=T_VAL newWindSum=NUM windSum=OPT windValue=IDX"
1181                ) || match_regexp(line, lineNo, record, MARK_ANGLE_LAST, "markAngle" +
1182" last segment=IDX span=IDX"
1183                ) || match_regexp(line, lineNo, record, MARK_ANGLE_LAST, "markAngle" +
1184" last seg=IDX span=IDX"
1185                ) || match_regexp(line, lineNo, record, MARK_ANGLE_LAST, "markAngle" +
1186" last segment=IDX span=IDX windSum=OPT"
1187                ) || match_regexp(line, lineNo, record, MARK_ANGLE_LAST, "markAngle" +
1188" last seg=IDX span=IDX windSum=OPT"
1189                );
1190                break;
1191            case REC_TYPE_OP:
1192                if (line.lastIndexOf("oppSign oppSign=", 0) === 0
1193                        || line.lastIndexOf("operator<", 0) === 0) {
1194                    found = true;
1195                    break;
1196                }
1197                found = match_regexp(line, lineNo, record, OP_DIFFERENCE, "op diff"
1198                ) || match_regexp(line, lineNo, record, OP_INTERSECT, "op intersect"
1199                ) || match_regexp(line, lineNo, record, OP_INTERSECT, "op sect"
1200                ) || match_regexp(line, lineNo, record, OP_UNION, "op union"
1201                ) || match_regexp(line, lineNo, record, OP_XOR, "op xor"
1202                );
1203                break;
1204            case REC_TYPE_UNKNOWN:
1205                found = true;
1206                break;
1207        }
1208        if (!found) {
1209            console.log(line + " [" + lineNo + "] of type " + type + " not found");
1210        }
1211    }
1212    if (recType != REC_TYPE_UNKNOWN) {
1213        records.push(recType);
1214        records.push(lastLineNo);
1215        records.push(record);
1216    }
1217    if (records.length >= 1) {
1218        tests[testIndex] = records;
1219        testLines[testIndex] = lines;
1220    }
1221}
1222
1223function init(test) {
1224    var canvas = document.getElementById('canvas');
1225    if (!canvas.getContext) return;
1226    ctx = canvas.getContext('2d');
1227    var resScale = retina_scale && window.devicePixelRatio ? window.devicePixelRatio : 1;
1228    var unscaledWidth = window.innerWidth - 20;
1229    var unscaledHeight = window.innerHeight - 20;
1230    screenWidth = unscaledWidth;
1231    screenHeight = unscaledHeight;
1232    canvas.width = unscaledWidth * resScale;
1233    canvas.height = unscaledHeight * resScale;
1234    canvas.style.width = unscaledWidth + 'px';
1235    canvas.style.height = unscaledHeight + 'px';
1236    if (resScale != 1) {
1237        ctx.scale(resScale, resScale);
1238    }
1239    xmin = Infinity;
1240    xmax = -Infinity;
1241    ymin = Infinity;
1242    ymax = -Infinity;
1243    hasPath = hasAlignedPath = hasComputedPath = false;
1244    firstActiveSpan = -1;
1245    for (var tIndex = 0; tIndex < test.length; tIndex += 3) {
1246        var recType = test[tIndex];
1247        if (!typeof recType == 'number' || recType < REC_TYPE_UNKNOWN || recType > REC_TYPE_LAST) {
1248            console.log("unknown rec type: " + recType);
1249            throw "stop execution";
1250        }
1251        var records = test[tIndex + 2];
1252        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
1253            var fragType = records[recordIndex];
1254            if (!typeof fragType == 'number' || fragType < 1 || fragType > FRAG_TYPE_LAST) {
1255                console.log("unknown in range frag type: " + fragType);
1256                throw "stop execution";
1257            }
1258            var frags = records[recordIndex + 1];
1259            var first = 0;
1260            var last = -1;
1261            var first2 = 0;
1262            var last2 = 0;
1263            switch (recType) {
1264                case REC_TYPE_ALIGNED:
1265                    hasAlignedPath = true;
1266                case REC_TYPE_COMPUTED:
1267                    if (fragType == COMPUTED_SET_1 || fragType == COMPUTED_SET_2) {
1268                        break;
1269                    }
1270                    if (REC_TYPE_COMPUTED == recType) {
1271                        hasComputedPath = true;
1272                    }
1273                case REC_TYPE_PATH:
1274                    first = 1;
1275                    switch (fragType) {
1276                        case PATH_LINE:
1277                            last = 5;
1278                            break;
1279                        case PATH_CONIC:
1280                        case PATH_QUAD:
1281                            last = 7;
1282                            break;
1283                        case PATH_CUBIC:
1284                            last = 9;
1285                            break;
1286                        default:
1287                            console.log("unknown " + (recType == REC_TYPE_PATH ? "REC_TYPE_PATH"
1288                                    : "REC_TYPE_COMPUTED") + " frag type:" + fragType);
1289                            throw "stop execution";
1290                    }
1291                    if (recType == REC_TYPE_PATH) {
1292                        hasPath = true;
1293                    }
1294                    break;
1295                case REC_TYPE_PATH2:
1296                    first = 1;
1297                    switch (fragType) {
1298                        case PATH_LINE:
1299                            last = 5;
1300                            break;
1301                        case PATH_CONIC:
1302                        case PATH_QUAD:
1303                            last = 7;
1304                            break;
1305                        case PATH_CUBIC:
1306                            last = 9;
1307                            break;
1308                        default:
1309                            console.log("unknown " + (recType == REC_TYPE_PATH2 ? "REC_TYPE_PATH2"
1310                                    : "REC_TYPE_COMPUTED") + " frag type:" + fragType);
1311                            throw "stop execution";
1312                    }
1313                    if (recType == REC_TYPE_PATH2) {
1314                        hasPath = true;
1315                    }
1316                    break;
1317                case REC_TYPE_ACTIVE:
1318                    if (firstActiveSpan < 0) {
1319                        firstActiveSpan = tIndex;
1320                    }
1321                    first = 1;
1322                    switch (fragType) {
1323                        case ACTIVE_LINE_SPAN:
1324                            last = 5;
1325                            break;
1326                        case ACTIVE_CONIC_SPAN:
1327                        case ACTIVE_QUAD_SPAN:
1328                            last = 7;
1329                            break;
1330                        case ACTIVE_CUBIC_SPAN:
1331                            last = 9;
1332                            break;
1333                        default:
1334                            console.log("unknown REC_TYPE_ACTIVE frag type: " + fragType);
1335                            throw "stop execution";
1336                    }
1337                    break;
1338                case REC_TYPE_ADD:
1339                    switch (fragType) {
1340                        case ADD_MOVETO:
1341                            break;
1342                        case ADD_LINETO:
1343                            last = 4;
1344                            break;
1345                        case ADD_CONICTO:
1346                        case ADD_QUADTO:
1347                            last = 6;
1348                            break;
1349                        case ADD_CUBICTO:
1350                            last = 8;
1351                            break;
1352                        case ADD_CLOSE:
1353                        case ADD_FILL:
1354                            break;
1355                        default:
1356                            console.log("unknown REC_TYPE_ADD frag type: " + fragType);
1357                            throw "stop execution";
1358                    }
1359                    break;
1360                case REC_TYPE_AFTERPART:
1361                    switch (fragType) {
1362                        case PATH_LINE:
1363                            last = 4;
1364                            break;
1365                        case PATH_CONIC:
1366                        case PATH_QUAD:
1367                            last = 6;
1368                            break;
1369                        case PATH_CUBIC:
1370                            last = 8;
1371                            break;
1372                        default:
1373                            console.log("unknown REC_TYPE_ACTIVEPART frag type: " + fragType);
1374                            throw "stop execution";
1375                    }
1376                    break;
1377                case REC_TYPE_SECT:
1378                    switch (fragType) {
1379                        case INTERSECT_LINE:
1380                            first = 1; last = 5; first2 = 8; last2 = 12;
1381                            break;
1382                        case INTERSECT_LINE_2:
1383                            first = 1; last = 5; first2 = 11; last2 = 15;
1384                            break;
1385                        case INTERSECT_LINE_NO:
1386                            first = 0; last = 4; first2 = 4; last2 = 8;
1387                            break;
1388                        case INTERSECT_CONIC_LINE:
1389                            first = 1; last = 7; first2 = 11; last2 = 15;
1390                            break;
1391                        case INTERSECT_QUAD_LINE:
1392                            first = 1; last = 7; first2 = 10; last2 = 14;
1393                            break;
1394                        case INTERSECT_CONIC_LINE_2:
1395                            first = 1; last = 7; first2 = 14; last2 = 18;
1396                            break;
1397                        case INTERSECT_QUAD_LINE_2:
1398                            first = 1; last = 7; first2 = 13; last2 = 17;
1399                            break;
1400                        case INTERSECT_CONIC_LINE_NO:
1401                            first = 0; last = 6; first2 = 7; last2 = 11;
1402                            break;
1403                        case INTERSECT_QUAD_LINE_NO:
1404                            first = 0; last = 6; first2 = 6; last2 = 10;
1405                            break;
1406                        case INTERSECT_CONIC:
1407                            first = 1; last = 7; first2 = 11; last2 = 17;
1408                            break;
1409                        case INTERSECT_QUAD:
1410                            first = 1; last = 7; first2 = 10; last2 = 16;
1411                            break;
1412                        case INTERSECT_CONIC_2:
1413                            first = 1; last = 7; first2 = 14; last2 = 20;
1414                            break;
1415                        case INTERSECT_QUAD_2:
1416                            first = 1; last = 7; first2 = 13; last2 = 19;
1417                            break;
1418                        case INTERSECT_CONIC_NO:
1419                            first = 0; last = 6; first2 = 7; last2 = 13;
1420                            break;
1421                        case INTERSECT_QUAD_NO:
1422                            first = 0; last = 6; first2 = 6; last2 = 12;
1423                            break;
1424                        case INTERSECT_SELF_CUBIC:
1425                            first = 1; last = 9;
1426                            break;
1427                        case INTERSECT_SELF_CUBIC_NO:
1428                            first = 0; last = 8;
1429                            break;
1430                        case INTERSECT_CUBIC_LINE:
1431                            first = 1; last = 9; first2 = 12; last2 = 16;
1432                            break;
1433                        case INTERSECT_CUBIC_LINE_2:
1434                            first = 1; last = 9; first2 = 15; last2 = 19;
1435                            break;
1436                        case INTERSECT_CUBIC_LINE_3:
1437                            first = 1; last = 9; first2 = 18; last2 = 22;
1438                            break;
1439                        case INTERSECT_CUBIC_LINE_NO:
1440                            first = 0; last = 8; first2 = 8; last2 = 12;
1441                            break;
1442                        case INTERSECT_CONIC_QUAD:
1443                            first = 1; last = 7; first2 = 11; last2 = 17;
1444                            break;
1445                        case INTERSECT_CONIC_QUAD_2:
1446                            first = 1; last = 7; first2 = 14; last2 = 20;
1447                            break;
1448                        case INTERSECT_CONIC_QUAD_3:
1449                            first = 1; last = 7; first2 = 17; last2 = 23;
1450                            break;
1451                        case INTERSECT_CONIC_QUAD_4:
1452                            first = 1; last = 7; first2 = 20; last2 = 26;
1453                            break;
1454                        case INTERSECT_CONIC_QUAD_NO:
1455                            first = 0; last = 6; first2 = 7; last2 = 13;
1456                            break;
1457                        case INTERSECT_CUBIC_QUAD:
1458                            first = 1; last = 9; first2 = 12; last2 = 18;
1459                            break;
1460                        case INTERSECT_CUBIC_QUAD_2:
1461                            first = 1; last = 9; first2 = 15; last2 = 21;
1462                            break;
1463                        case INTERSECT_CUBIC_QUAD_3:
1464                            first = 1; last = 9; first2 = 18; last2 = 24;
1465                            break;
1466                        case INTERSECT_CUBIC_QUAD_4:
1467                            first = 1; last = 9; first2 = 21; last2 = 27;
1468                            break;
1469                        case INTERSECT_CUBIC_QUAD_NO:
1470                            first = 0; last = 8; first2 = 8; last2 = 14;
1471                            break;
1472                        case INTERSECT_CUBIC:
1473                            first = 1; last = 9; first2 = 12; last2 = 20;
1474                            break;
1475                        case INTERSECT_CUBIC_2:
1476                            first = 1; last = 9; first2 = 15; last2 = 23;
1477                            break;
1478                        case INTERSECT_CUBIC_3:
1479                            first = 1; last = 9; first2 = 18; last2 = 26;
1480                            break;
1481                        case INTERSECT_CUBIC_4:
1482                            first = 1; last = 9; first2 = 21; last2 = 29;
1483                            break;
1484                        case INTERSECT_CUBIC_NO:
1485                            first = 0; last = 8; first2 = 8; last2 = 16;
1486                            break;
1487                        default:
1488                            console.log("unknown REC_TYPE_SECT frag type: " + fragType);
1489                            throw "stop execution";
1490                    }
1491                    break;
1492                default:
1493                    continue;
1494            }
1495            for (var idx = first; idx < last; idx += 2) {
1496                xmin = Math.min(xmin, frags[idx]);
1497                xmax = Math.max(xmax, frags[idx]);
1498                ymin = Math.min(ymin, frags[idx + 1]);
1499                ymax = Math.max(ymax, frags[idx + 1]);
1500            }
1501            for (var idx = first2; idx < last2; idx += 2) {
1502                xmin = Math.min(xmin, frags[idx]);
1503                xmax = Math.max(xmax, frags[idx]);
1504                ymin = Math.min(ymin, frags[idx + 1]);
1505                ymax = Math.max(ymax, frags[idx + 1]);
1506            }
1507        }
1508    }
1509    var angleBounds = [Infinity, Infinity, -Infinity, -Infinity];
1510    for (var tIndex = 0; tIndex < test.length; tIndex += 3) {
1511        var recType = test[tIndex];
1512        var records = test[tIndex + 2];
1513        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
1514            var fragType = records[recordIndex];
1515            var frags = records[recordIndex + 1];
1516            switch (recType) {
1517                case REC_TYPE_ACTIVE_OP:
1518                    if (!draw_op) {
1519                        break;
1520                    }
1521                    {
1522                        var curve = curvePartialByID(test, frags[0], frags[1], frags[2]);
1523                        curve_extremes(curve, angleBounds);
1524                    }
1525                    break;
1526                case REC_TYPE_ANGLE:
1527                    if (!draw_angle) {
1528                        break;
1529                    }
1530                    {
1531                        var curve = curvePartialByID(test, frags[0], frags[4], frags[5]);
1532                        curve_extremes(curve, angleBounds);
1533                        curve = curvePartialByID(test, frags[6], frags[10], frags[11]);
1534                        curve_extremes(curve, angleBounds);
1535                        curve = curvePartialByID(test, frags[12], frags[16], frags[17]);
1536                    }
1537                    break;
1538                case REC_TYPE_COINCIDENCE:
1539                    if (!draw_coincidence) {
1540                        break;
1541                    }
1542                    {
1543                        var curve = curvePartialByID(test, frags[0], frags[1], frags[2]);
1544                        curve_extremes(curve, angleBounds);
1545                    }
1546                    break;
1547                case REC_TYPE_SORT:
1548                    if (!draw_sort) {
1549                        break;
1550                    }
1551                    if (fragType == SORT_UNARY || fragType == SORT_BINARY) {
1552                        var curve = curvePartialByID(test, frags[0], frags[6], frags[8]);
1553                        curve_extremes(curve, angleBounds);
1554                    }
1555                    break;
1556                case REC_TYPE_TOP:
1557                    if (!draw_top) {
1558                        break;
1559                    }
1560                    {
1561                        var curve = curvePartialByID(test, frags[0], frags[1], frags[2]);
1562                        curve_extremes(curve, angleBounds);
1563                    }
1564                    break;
1565            }
1566        }
1567    }
1568    xmin = Math.min(xmin, angleBounds[0]);
1569    ymin = Math.min(ymin, angleBounds[1]);
1570    xmax = Math.max(xmax, angleBounds[2]);
1571    ymax = Math.max(ymax, angleBounds[3]);
1572    setScale(xmin, xmax, ymin, ymax);
1573    if (hasPath == false && hasComputedPath == true && !draw_computed) {
1574        draw_computed = 7; // show quadratics, conics, and cubics
1575    }
1576    if (hasPath == true && hasComputedPath == false && draw_computed) {
1577        draw_computed = 0;
1578    }
1579}
1580
1581function curveByIDMatch(test, id, recMatch) {
1582    var tIndex = -3;
1583    while ((tIndex += 3) < test.length) {
1584        var recType = test[tIndex];
1585        if (recType == REC_TYPE_OP) {
1586            continue;
1587        }
1588        if (recType != recMatch) {
1589            return [];
1590        }
1591        var records = test[tIndex + 2];
1592        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
1593            var fragType = records[recordIndex];
1594            var frags = records[recordIndex + 1];
1595            if (frags[0] == id) {
1596                switch (fragType) {
1597                    case PATH_LINE:
1598                        return [frags[1], frags[2], frags[3], frags[4]];
1599                    case PATH_QUAD:
1600                        return [frags[1], frags[2], frags[3], frags[4],
1601                                frags[5], frags[6]];
1602                    case PATH_CONIC:
1603                        return [frags[1], frags[2], frags[3], frags[4],
1604                                frags[5], frags[6], frags[7]];
1605                    case PATH_CUBIC:
1606                        return [frags[1], frags[2], frags[3], frags[4],
1607                                frags[5], frags[6], frags[7], frags[8]];
1608                }
1609            }
1610        }
1611    }
1612    return [];
1613}
1614
1615function curveByID(test, id) {
1616    var result = draw_path >= 4 ? curveByIDMatch(test, id, REC_TYPE_ALIGNED) : [];
1617    if (!result.length) {
1618        result = curveByIDMatch(test, id, REC_TYPE_PATH);
1619    }
1620    return result;
1621}
1622
1623function curvePartialByIDMatch(test, id, t0, t1, recMatch) {
1624    var tIndex = -3;
1625    while ((tIndex += 3) < test.length) {
1626        var recType = test[tIndex];
1627        if (recType == REC_TYPE_OP) {
1628            continue;
1629        }
1630        if (recType != recMatch) {
1631            return [];
1632        }
1633        var records = test[tIndex + 2];
1634        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
1635            var fragType = records[recordIndex];
1636            var frags = records[recordIndex + 1];
1637            if (frags[0] == id) {
1638                switch (fragType) {
1639                    case PATH_LINE:
1640                        return linePartial(frags[1], frags[2], frags[3], frags[4], t0, t1);
1641                    case PATH_QUAD:
1642                        return quadPartial(frags[1], frags[2], frags[3], frags[4],
1643                                frags[5], frags[6], t0, t1);
1644                    case PATH_CONIC:
1645                        return conicPartial(frags[1], frags[2], frags[3], frags[4],
1646                                frags[5], frags[6], frags[7], t0, t1);
1647                    case PATH_CUBIC:
1648                        return cubicPartial(frags[1], frags[2], frags[3], frags[4],
1649                                frags[5], frags[6], frags[7], frags[8], t0, t1);
1650                }
1651            }
1652        }
1653    }
1654    return [];
1655}
1656
1657function curvePartialByID(test, id, t0, t1) {
1658    var result = draw_path >= 4 ? curvePartialByIDMatch(test, id, t0, t1, REC_TYPE_ALIGNED) : [];
1659    if (!result.length) {
1660        result = curvePartialByIDMatch(test, id, t0, t1, REC_TYPE_PATH);
1661    }
1662    return result;
1663}
1664
1665function idByCurveIDMatch(test, frag, type, recMatch) {
1666    var tIndex = 0;
1667    while (tIndex < test.length) {
1668        var recType = test[tIndex];
1669        if (recType != recMatch) {
1670            ++tIndex;
1671            continue;
1672        }
1673        var records = test[tIndex + 2];
1674        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
1675            var fragType = records[recordIndex];
1676            var frags = records[recordIndex + 1];
1677            if (frag.length != frags.length - 1) {
1678                continue;
1679            }
1680            switch (fragType) {
1681                case PATH_LINE:
1682                    if (frag[0] != frags[1] || frag[1] != frags[2]
1683                            || frag[2] != frags[3] || frag[3] != frags[4]) {
1684                        continue;
1685                    }
1686                    return frags[0];
1687                case PATH_QUAD:
1688                    if (frag[0] != frags[1] || frag[1] != frags[2]
1689                            || frag[2] != frags[3] || frag[3] != frags[4]
1690                            || frag[4] != frags[5] || frag[5] != frags[6]) {
1691                        continue;
1692                    }
1693                    return frags[0];
1694                case PATH_CONIC:
1695                    if (frag[0] != frags[1] || frag[1] != frags[2]
1696                            || frag[2] != frags[3] || frag[3] != frags[4]
1697                            || frag[4] != frags[5] || frag[5] != frags[6]
1698                            || frag[6] != frags[7]) {
1699                        continue;
1700                    }
1701                    return frags[0];
1702                case PATH_CUBIC:
1703                    if (frag[0] != frags[1] || frag[1] != frags[2]
1704                            || frag[2] != frags[3] || frag[3] != frags[4]
1705                            || frag[4] != frags[5] || frag[5] != frags[6]
1706                            || frag[6] != frags[7] || frag[7] != frags[8]) {
1707                        continue;
1708                    }
1709                    return frags[0];
1710            }
1711        }
1712        ++tIndex;
1713    }
1714    return -1;
1715}
1716
1717function idByCurve(test, frag, type) {
1718    var result = draw_path >= 4 ? idByCurveIDMatch(test, frag, type, REC_TYPE_ALIGNED) : [];
1719    if (!result.length) {
1720        result = idByCurveIDMatch(test, frag, type, REC_TYPE_PATH);
1721    }
1722    return result;
1723}
1724
1725function curve_extremes(curve, bounds) {
1726    var length = curve.length == 7 ? 6 : curve.length;
1727    for (var index = 0; index < length; index += 2) {
1728        var x = curve[index];
1729        var y = curve[index + 1];
1730        bounds[0] = Math.min(bounds[0], x);
1731        bounds[1] = Math.min(bounds[1], y);
1732        bounds[2] = Math.max(bounds[2], x);
1733        bounds[3] = Math.max(bounds[3], y);
1734    }
1735}
1736
1737function setScale(x0, x1, y0, y1) {
1738    var srcWidth = x1 - x0;
1739    var srcHeight = y1 - y0;
1740    var usableWidth = screenWidth;
1741    var xDigits = Math.ceil(Math.log(Math.abs(xmax)) / Math.log(10));
1742    var yDigits = Math.ceil(Math.log(Math.abs(ymax)) / Math.log(10));
1743    usableWidth -= (xDigits + yDigits) * 10;
1744    usableWidth -= decimal_places * 10;
1745    if (draw_legend) {
1746        usableWidth -= 40;
1747    }
1748    var hscale = usableWidth / srcWidth;
1749    var vscale = screenHeight / srcHeight;
1750    scale = Math.min(hscale, vscale);
1751    var invScale = 1 / scale;
1752    var sxmin = x0 - invScale * 5;
1753    var symin = y0 - invScale * 10;
1754    var sxmax = x1 + invScale * (6 * decimal_places + 10);
1755    var symax = y1 + invScale * 10;
1756    srcWidth = sxmax - sxmin;
1757    srcHeight = symax - symin;
1758    hscale = usableWidth / srcWidth;
1759    vscale = screenHeight / srcHeight;
1760    scale = Math.min(hscale, vscale);
1761    srcLeft = sxmin;
1762    srcTop = symin;
1763}
1764
1765function drawArc(curve, op, from, to) {
1766    var type = PATH_LINE + (curve.length / 2 - 2);
1767    var pt = pointAtT(curve, type, op ? 0.4 : 0.6);
1768    var dy = pt.y - curve[1];
1769    var dx = pt.x - curve[0];
1770    var dist = Math.sqrt(dy * dy + dx * dx);
1771    var _dist = dist * scale;
1772    var angle = Math.atan2(dy, dx);
1773    var _px = (curve[0] - srcLeft) * scale;
1774    var _py = (curve[1] - srcTop) * scale;
1775    var divisor = 4;
1776    var endDist;
1777    do {
1778        var ends = [];
1779        for (var index = -1; index <= 1; index += 2) {
1780            var px = Math.cos(index * Math.PI / divisor);
1781            var py = Math.sin(index * Math.PI / divisor);
1782            ends.push(px);
1783            ends.push(py);
1784        }
1785        var endDx = (ends[2] - ends[0]) * scale * dist;
1786        var endDy = (ends[3] - ends[1]) * scale * dist;
1787        endDist = Math.sqrt(endDx * endDx + endDy * endDy);
1788        if (endDist < 100) {
1789            break;
1790        }
1791        divisor *= 2;
1792    } while (true);
1793    if (endDist < 30) {
1794        return;
1795    }
1796    if (op) {
1797        divisor *= 2;
1798    }
1799    ctx.strokeStyle = op ? "rgba(210,0,45, 0.4)" : "rgba(90,90,90, 0.5)";
1800    ctx.beginPath();
1801    ctx.arc(_px, _py, _dist, angle - Math.PI / divisor, angle + Math.PI / divisor, false);
1802    ctx.stroke();
1803    var saveAlign = ctx.textAlign;
1804    var saveStyle = ctx.fillStyle;
1805    var saveFont = ctx.font;
1806    ctx.textAlign = "center";
1807    ctx.fillStyle = "black";
1808    ctx.font = "normal 24px Arial";
1809    divisor *= 0.8;
1810    for (var index = -1; index <= 1; index += 2) {
1811        var px = curve[0] + Math.cos(angle + index * Math.PI / divisor) * dist;
1812        var py = curve[1] + Math.sin(angle + index * Math.PI / divisor) * dist;
1813        var _px = (px - srcLeft) * scale;
1814        var _py = (py - srcTop) * scale;
1815        ctx.fillText(index < 0 ? to.toString() : from.toString(), _px, _py + 8);
1816    }
1817    ctx.textAlign = saveAlign;
1818    ctx.fillStyle = saveStyle;
1819    ctx.font = saveFont;
1820}
1821
1822function drawPoint(px, py, end) {
1823    var length = drawnPts.length == 7 ? 6 : drawnPts.length;
1824    for (var pts = 0; pts < length; pts += 2) {
1825        var x = drawnPts[pts];
1826        var y = drawnPts[pts + 1];
1827        if (px == x && py == y) {
1828            return;
1829        }
1830    }
1831    drawnPts.push(px);
1832    drawnPts.push(py);
1833    var label = px.toFixed(decimal_places) + ", " + py.toFixed(decimal_places);
1834    var _px = (px - srcLeft) * scale;
1835    var _py = (py - srcTop) * scale;
1836    ctx.beginPath();
1837    ctx.arc(_px, _py, 3, 0, Math.PI*2, true);
1838    ctx.closePath();
1839    if (end) {
1840        ctx.fill();
1841    } else {
1842        ctx.stroke();
1843    }
1844    if (debug_xy) {
1845        ctx.textAlign = "left";
1846        ctx.fillText(label, _px + 5, _py);
1847    }
1848}
1849
1850function coordCount(curveType) {
1851    switch (curveType) {
1852        case PATH_LINE:
1853            return 4;
1854        case PATH_QUAD:
1855            return 6;
1856        case PATH_CONIC:
1857            return 6;
1858        case PATH_CUBIC:
1859            return 8;
1860    }
1861    return -1;
1862}
1863
1864function drawPoints(ptArray, curveType, drawControls) {
1865    var count = coordCount(curveType);
1866    for (var idx = 0; idx < count; idx += 2) {
1867        if (!drawControls && idx != 0 && idx != count - 2) {
1868            continue;
1869        }
1870        drawPoint(ptArray[idx], ptArray[idx + 1], idx == 0 || idx == count - 2);
1871    }
1872}
1873
1874function drawControlLines(curve, curveType, drawEnd) {
1875    if (curveType == PATH_LINE) {
1876        return;
1877    }
1878    ctx.strokeStyle = "rgba(0,0,0, 0.3)";
1879    drawLine(curve[0], curve[1], curve[2], curve[3]);
1880    drawLine(curve[2], curve[3], curve[4], curve[5]);
1881    if (curveType == PATH_CUBIC) {
1882        drawLine(curve[4], curve[5], curve[6], curve[7]);
1883        if (drawEnd > 1) {
1884            drawLine(curve[6], curve[7], curve[0], curve[1]);
1885            if (drawEnd > 2) {
1886                drawLine(curve[0], curve[1], curve[4], curve[5]);
1887                drawLine(curve[6], curve[7], curve[2], curve[3]);
1888            }
1889        }
1890    } else if (drawEnd > 1) {
1891        drawLine(curve[4], curve[5], curve[0], curve[1]);
1892    }
1893}
1894
1895function pointAtT(curve, curveType, t) {
1896    var xy = {};
1897    switch (curveType) {
1898        case PATH_LINE:
1899            var a = 1 - t;
1900            var b = t;
1901            xy.x = a * curve[0] + b * curve[2];
1902            xy.y = a * curve[1] + b * curve[3];
1903            break;
1904        case PATH_QUAD:
1905            var one_t = 1 - t;
1906            var a = one_t * one_t;
1907            var b = 2 * one_t * t;
1908            var c = t * t;
1909            xy.x = a * curve[0] + b * curve[2] + c * curve[4];
1910            xy.y = a * curve[1] + b * curve[3] + c * curve[5];
1911            break;
1912        case PATH_CONIC:
1913            var one_t = 1 - t;
1914            var a = one_t * one_t;
1915            var b = 2 * one_t * t;
1916            var c = t * t;
1917            xy.x = a * curve[0] + b * curve[2] * curve[6] + c * curve[4];
1918            xy.y = a * curve[1] + b * curve[3] * curve[6] + c * curve[5];
1919            var d = a + b * curve[6] + c;
1920            xy.x /= d;
1921            xy.y /= d;
1922            break;
1923        case PATH_CUBIC:
1924            var one_t = 1 - t;
1925            var one_t2 = one_t * one_t;
1926            var a = one_t2 * one_t;
1927            var b = 3 * one_t2 * t;
1928            var t2 = t * t;
1929            var c = 3 * one_t * t2;
1930            var d = t2 * t;
1931            xy.x = a * curve[0] + b * curve[2] + c * curve[4] + d * curve[6];
1932            xy.y = a * curve[1] + b * curve[3] + c * curve[5] + d * curve[7];
1933            break;
1934    }
1935    return xy;
1936}
1937
1938function drawPointAtT(curve, curveType) {
1939    var x, y;
1940    var xy = pointAtT(curve, curveType, curveT);
1941    drawPoint(xy.x, xy.y, true);
1942    if (!draw_intersectT) {
1943        return;
1944    }
1945    ctx.fillStyle = "red";
1946    drawTAtPointUp(xy.x, xy.y, curveT);
1947}
1948
1949function drawTAtPointUp(px, py, t) {
1950    var label = t.toFixed(decimal_places);
1951    var _px = (px - srcLeft)* scale;
1952    var _py = (py - srcTop) * scale;
1953    ctx.fillText(label, _px + 5, _py - 10);
1954}
1955
1956function drawTAtPointDown(px, py, t) {
1957    var label = t.toFixed(decimal_places);
1958    var _px = (px - srcLeft)* scale;
1959    var _py = (py - srcTop) * scale;
1960    ctx.fillText(label, _px + 5, _py + 10);
1961}
1962
1963function alreadyDrawnLine(x1, y1, x2, y2) {
1964    if (collect_bounds) {
1965        if (focus_enabled) {
1966            focusXmin = Math.min(focusXmin, x1, x2);
1967            focusYmin = Math.min(focusYmin, y1, y2);
1968            focusXmax = Math.max(focusXmax, x1, x2);
1969            focusYmax = Math.max(focusYmax, y1, y2);
1970        }
1971        return true;
1972    }
1973    for (var pts = 0; pts < drawnLines.length; pts += 4) {
1974        if (x1 == drawnLines[pts] && y1 == drawnLines[pts + 1]
1975                && x2 == drawnLines[pts + 2] && y2 == drawnLines[pts + 3]) {
1976            return true;
1977        }
1978    }
1979    drawnLines.push(x1);
1980    drawnLines.push(y1);
1981    drawnLines.push(x2);
1982    drawnLines.push(y2);
1983    return false;
1984}
1985
1986function drawLine(x1, y1, x2, y2) {
1987    if (alreadyDrawnLine(x1, y1, x2, y2)) {
1988        return;
1989    }
1990    ctx.beginPath();
1991    ctx.moveTo((x1 - srcLeft) * scale,
1992            (y1 - srcTop) * scale);
1993    ctx.lineTo((x2 - srcLeft) * scale,
1994            (y2 - srcTop) * scale);
1995    ctx.stroke();
1996}
1997
1998function linePartial(x1, y1, x2, y2, t1, t2) {
1999    var dx = x1 - x2;
2000    var dy = y1 - y2;
2001    var array = [
2002        x1 - t1 * dx,
2003        y1 - t1 * dy,
2004        x1 - t2 * dx,
2005        y1 - t2 * dy
2006    ];
2007    return array;
2008}
2009
2010function drawLinePartial(x1, y1, x2, y2, t1, t2) {
2011    var a = linePartial(x1, y1, x2, y2, t1, t2);
2012    var ax = a[0];
2013    var ay = a[1];
2014    var bx = a[2];
2015    var by = a[3];
2016    if (alreadyDrawnLine(ax, ay, bx, by)) {
2017        return;
2018    }
2019    ctx.beginPath();
2020    ctx.moveTo((ax - srcLeft) * scale,
2021            (ay - srcTop) * scale);
2022    ctx.lineTo((bx - srcLeft) * scale,
2023            (by - srcTop) * scale);
2024    ctx.stroke();
2025}
2026
2027function alreadyDrawnQuad(x1, y1, x2, y2, x3, y3) {
2028    if (collect_bounds) {
2029        if (focus_enabled) {
2030            focusXmin = Math.min(focusXmin, x1, x2, x3);
2031            focusYmin = Math.min(focusYmin, y1, y2, y3);
2032            focusXmax = Math.max(focusXmax, x1, x2, x3);
2033            focusYmax = Math.max(focusYmax, y1, y2, y3);
2034        }
2035        return true;
2036    }
2037    for (var pts = 0; pts < drawnQuads.length; pts += 6) {
2038        if (x1 == drawnQuads[pts] && y1 == drawnQuads[pts + 1]
2039                && x2 == drawnQuads[pts + 2] && y2 == drawnQuads[pts + 3]
2040                && x3 == drawnQuads[pts + 4] && y3 == drawnQuads[pts + 5]) {
2041            return true;
2042        }
2043    }
2044    drawnQuads.push(x1);
2045    drawnQuads.push(y1);
2046    drawnQuads.push(x2);
2047    drawnQuads.push(y2);
2048    drawnQuads.push(x3);
2049    drawnQuads.push(y3);
2050    return false;
2051}
2052
2053function drawQuad(x1, y1, x2, y2, x3, y3) {
2054    if (alreadyDrawnQuad(x1, y1, x2, y2, x3, y3)) {
2055        return;
2056    }
2057    ctx.beginPath();
2058    ctx.moveTo((x1 - srcLeft) * scale,
2059            (y1 - srcTop) * scale);
2060    ctx.quadraticCurveTo((x2 - srcLeft) * scale,
2061            (y2 - srcTop) * scale,
2062            (x3 - srcLeft) * scale,
2063            (y3 - srcTop) * scale);
2064    ctx.stroke();
2065}
2066
2067function interp(A, B, t) {
2068    return A + (B - A) * t;
2069}
2070
2071function interp_quad_coords(x1, x2, x3, t)
2072{
2073    var ab = interp(x1, x2, t);
2074    var bc = interp(x2, x3, t);
2075    var abc = interp(ab, bc, t);
2076    return abc;
2077}
2078
2079function quadPartial(x1, y1, x2, y2, x3, y3, t1, t2) {
2080    var ax = interp_quad_coords(x1, x2, x3, t1);
2081    var ay = interp_quad_coords(y1, y2, y3, t1);
2082    var dx = interp_quad_coords(x1, x2, x3, (t1 + t2) / 2);
2083    var dy = interp_quad_coords(y1, y2, y3, (t1 + t2) / 2);
2084    var cx = interp_quad_coords(x1, x2, x3, t2);
2085    var cy = interp_quad_coords(y1, y2, y3, t2);
2086    var bx = 2*dx - (ax + cx)/2;
2087    var by = 2*dy - (ay + cy)/2;
2088    var array = [
2089        ax, ay, bx, by, cx, cy
2090    ];
2091    return array;
2092}
2093
2094function drawQuadPartial(x1, y1, x2, y2, x3, y3, t1, t2) {
2095    var a = quadPartial(x1, y1, x2, y2, x3, y3, t1, t2);
2096    var ax = a[0];
2097    var ay = a[1];
2098    var bx = a[2];
2099    var by = a[3];
2100    var cx = a[4];
2101    var cy = a[5];
2102    if (alreadyDrawnQuad(ax, ay, bx, by, cx, cy)) {
2103        return;
2104    }
2105    ctx.beginPath();
2106    ctx.moveTo((ax - srcLeft) * scale,
2107            (ay - srcTop) * scale);
2108    ctx.quadraticCurveTo((bx - srcLeft) * scale,
2109            (by - srcTop) * scale,
2110            (cx - srcLeft) * scale,
2111            (cy - srcTop) * scale);
2112    ctx.stroke();
2113}
2114
2115function alreadyDrawnConic(x1, y1, x2, y2, x3, y3, w) {
2116    if (collect_bounds) {
2117        if (focus_enabled) {
2118            focusXmin = Math.min(focusXmin, x1, x2, x3);
2119            focusYmin = Math.min(focusYmin, y1, y2, y3);
2120            focusXmax = Math.max(focusXmax, x1, x2, x3);
2121            focusYmax = Math.max(focusYmax, y1, y2, y3);
2122        }
2123        return true;
2124    }
2125    for (var pts = 0; pts < drawnConics.length; pts += 8) {
2126        if (x1 == drawnConics[pts] && y1 == drawnCubics[pts + 1]
2127                && x2 == drawnCubics[pts + 2] && y2 == drawnCubics[pts + 3]
2128                && x3 == drawnCubics[pts + 4] && y3 == drawnCubics[pts + 5]
2129                && w == drawnCubics[pts + 6]) {
2130            return true;
2131        }
2132    }
2133    drawnConics.push(x1);
2134    drawnConics.push(y1);
2135    drawnConics.push(x2);
2136    drawnConics.push(y2);
2137    drawnConics.push(x3);
2138    drawnConics.push(y3);
2139    drawnCubics.push(w);
2140    return false;
2141}
2142
2143var kMaxConicToQuadPOW2 = 5;
2144
2145function computeQuadPOW2(curve, tol) {
2146    var a = curve[6] - 1;
2147    var k = a / (4 * (2 + a));
2148    var x = k * (curve[0] - 2 * curve[2] + curve[4]);
2149    var y = k * (curve[1] - 2 * curve[3] + curve[5]);
2150
2151    var error = Math.sqrt(x * x + y * y);
2152    var pow2;
2153    for (pow2 = 0; pow2 < kMaxConicToQuadPOW2; ++pow2) {
2154        if (error <= tol) {
2155            break;
2156        }
2157        error *= 0.25;
2158    }
2159    return pow2;
2160}
2161
2162function subdivide_w_value(w) {
2163    return Math.sqrt(0.5 + w * 0.5);
2164}
2165
2166function chop(curve, part1, part2) {
2167    var w = curve[6];
2168    var scale = 1 / (1 + w);
2169    part1[0] = curve[0];
2170    part1[1] = curve[1];
2171    part1[2] = (curve[0] + curve[2] * w) * scale;
2172    part1[3] = (curve[1] + curve[3] * w) * scale;
2173    part1[4] = part2[0] = (curve[0] + (curve[2] * w) * 2 + curve[4]) * scale * 0.5;
2174    part1[5] = part2[1] = (curve[1] + (curve[3] * w) * 2 + curve[5]) * scale * 0.5;
2175    part2[2] = (curve[2] * w + curve[4]) * scale;
2176    part2[3] = (curve[3] * w + curve[5]) * scale;
2177    part2[4] = curve[4];
2178    part2[5] = curve[5];
2179    part1[6] = part2[6] = subdivide_w_value(w);
2180}
2181
2182function subdivide(curve, level, pts) {
2183    if (0 == level) {
2184        pts.push(curve[2]);
2185        pts.push(curve[3]);
2186        pts.push(curve[4]);
2187        pts.push(curve[5]);
2188    } else {
2189        var part1 = [], part2 = [];
2190        chop(curve, part1, part2);
2191        --level;
2192        subdivide(part1, level, pts);
2193        subdivide(part2, level, pts);
2194    }
2195}
2196
2197function chopIntoQuadsPOW2(curve, pow2, pts) {
2198    subdivide(curve, pow2, pts);
2199    return 1 << pow2;
2200}
2201
2202function drawConicWithQuads(x1, y1, x2, y2, x3, y3, w) {
2203    if (alreadyDrawnConic(x1, y1, x2, y2, x3, y3, w)) {
2204        return;
2205    }
2206    ctx.beginPath();
2207    ctx.moveTo((x1 - srcLeft) * scale,
2208            (y1 - srcTop) * scale);
2209    var tol = 1 / scale;
2210    var curve = [x1, y1, x2, y2, x3, y3, w];
2211    var pow2 = computeQuadPOW2(curve, tol);
2212    var pts = [];
2213    chopIntoQuadsPOW2(curve, pow2, pts);
2214    for (var i = 0; i < pts.length; i += 4) {
2215        ctx.quadraticCurveTo(
2216            (pts[i + 0] - srcLeft) * scale, (pts[i + 1] - srcTop) * scale,
2217            (pts[i + 2] - srcLeft) * scale, (pts[i + 3] - srcTop) * scale);
2218    }
2219    ctx.stroke();
2220}
2221
2222function conic_eval_numerator(x1, x2, x3, w, t) {
2223    var src2w = x2 * w;
2224    var C = x1;
2225    var A = x3 - 2 * src2w + C;
2226    var B = 2 * (src2w - C);
2227    return (A * t + B) * t + C;
2228}
2229
2230
2231function conic_eval_denominator(w, t) {
2232    var B = 2 * (w - 1);
2233    var C = 1;
2234    var A = -B;
2235    return (A * t + B) * t + C;
2236}
2237
2238function conicPartial(x1, y1, x2, y2, x3, y3, w, t1, t2) {
2239    var ax = conic_eval_numerator(x1, x2, x3, w, t1);
2240    var ay = conic_eval_numerator(y1, y2, y3, w, t1);
2241    var az = conic_eval_denominator(w, t1);
2242    var midT = (t1 + t2) / 2;
2243    var dx = conic_eval_numerator(x1, x2, x3, w, midT);
2244    var dy = conic_eval_numerator(y1, y2, y3, w, midT);
2245    var dz = conic_eval_denominator(w, midT);
2246    var cx = conic_eval_numerator(x1, x2, x3, w, t2);
2247    var cy = conic_eval_numerator(y1, y2, y3, w, t2);
2248    var cz = conic_eval_denominator(w, t2);
2249    var bx = 2 * dx - (ax + cx) / 2;
2250    var by = 2 * dy - (ay + cy) / 2;
2251    var bz = 2 * dz - (az + cz) / 2;
2252    var dt = t2 - t1;
2253    var dt_1 = 1 - dt;
2254    var array = [
2255        ax / az, ay / az, bx / bz, by / bz, cx / cz, cy / cz, 0
2256    ];
2257    var dMidAC = { x:(array[0] + array[4]) / 2, y:(array[1] + array[5]) / 2 };
2258    var dMid = { x:dx / dz, y:dy / dz };
2259    var dWNumer = { x:dMidAC.x - dMid.x, y:dMidAC.y - dMid.y };
2260    var dWDenom = { x:dMid.x - array[2], y:dMid.y - array[3] };
2261    var partW = Math.sqrt(dWNumer.x * dWNumer.x + dWNumer.y * dWNumer.y)
2262                / Math.sqrt(dWDenom.x * dWDenom.x + dWDenom.y * dWDenom.y);
2263    array[6] = partW;
2264    return array;
2265}
2266
2267function drawConicPartial(x1, y1, x2, y2, x3, y3, w, t1, t2) {
2268    var a = conicPartial(x1, y1, x2, y2, x3, y3, w, t1, t2);
2269    var ax = a[0];
2270    var ay = a[1];
2271    var bx = a[2];
2272    var by = a[3];
2273    var cx = a[4];
2274    var cy = a[5];
2275    var w_ = a[6];
2276    drawConicWithQuads(ax, ay, bx, by, cx, cy, w_);
2277}
2278
2279function alreadyDrawnCubic(x1, y1, x2, y2, x3, y3, x4, y4) {
2280    if (collect_bounds) {
2281        if (focus_enabled) {
2282            focusXmin = Math.min(focusXmin, x1, x2, x3, x4);
2283            focusYmin = Math.min(focusYmin, y1, y2, y3, y4);
2284            focusXmax = Math.max(focusXmax, x1, x2, x3, x4);
2285            focusYmax = Math.max(focusYmax, y1, y2, y3, y4);
2286        }
2287        return true;
2288    }
2289    for (var pts = 0; pts < drawnCubics.length; pts += 8) {
2290        if (x1 == drawnCubics[pts] && y1 == drawnCubics[pts + 1]
2291                && x2 == drawnCubics[pts + 2] && y2 == drawnCubics[pts + 3]
2292                && x3 == drawnCubics[pts + 4] && y3 == drawnCubics[pts + 5]
2293                && x4 == drawnCubics[pts + 6] && y4 == drawnCubics[pts + 7]) {
2294            return true;
2295        }
2296    }
2297    drawnCubics.push(x1);
2298    drawnCubics.push(y1);
2299    drawnCubics.push(x2);
2300    drawnCubics.push(y2);
2301    drawnCubics.push(x3);
2302    drawnCubics.push(y3);
2303    drawnCubics.push(x4);
2304    drawnCubics.push(y4);
2305    return false;
2306}
2307
2308function drawCubic(x1, y1, x2, y2, x3, y3, x4, y4) {
2309    if (alreadyDrawnCubic(x1, y1, x2, y2, x3, y3, x4, y4)) {
2310        return;
2311    }
2312    ctx.beginPath();
2313    ctx.moveTo((x1 - srcLeft) * scale,
2314            (y1 - srcTop) * scale);
2315    ctx.bezierCurveTo((x2 - srcLeft) * scale,
2316            (y2 - srcTop) * scale,
2317            (x3 - srcLeft) * scale,
2318            (y3 - srcTop) * scale,
2319            (x4 - srcLeft) * scale,
2320            (y4 - srcTop) * scale);
2321    ctx.stroke();
2322}
2323
2324function interp_cubic_coords(x1, x2, x3, x4, t)
2325{
2326    var ab = interp(x1, x2, t);
2327    var bc = interp(x2, x3, t);
2328    var cd = interp(x3, x4, t);
2329    var abc = interp(ab, bc, t);
2330    var bcd = interp(bc, cd, t);
2331    var abcd = interp(abc, bcd, t);
2332    return abcd;
2333}
2334
2335function cubicPartial(x1, y1, x2, y2, x3, y3, x4, y4, t1, t2) {
2336    var ax = interp_cubic_coords(x1, x2, x3, x4, t1);
2337    var ay = interp_cubic_coords(y1, y2, y3, y4, t1);
2338    var ex = interp_cubic_coords(x1, x2, x3, x4, (t1*2+t2)/3);
2339    var ey = interp_cubic_coords(y1, y2, y3, y4, (t1*2+t2)/3);
2340    var fx = interp_cubic_coords(x1, x2, x3, x4, (t1+t2*2)/3);
2341    var fy = interp_cubic_coords(y1, y2, y3, y4, (t1+t2*2)/3);
2342    var dx = interp_cubic_coords(x1, x2, x3, x4, t2);
2343    var dy = interp_cubic_coords(y1, y2, y3, y4, t2);
2344    var mx = ex * 27 - ax * 8 - dx;
2345    var my = ey * 27 - ay * 8 - dy;
2346    var nx = fx * 27 - ax - dx * 8;
2347    var ny = fy * 27 - ay - dy * 8;
2348    var bx = (mx * 2 - nx) / 18;
2349    var by = (my * 2 - ny) / 18;
2350    var cx = (nx * 2 - mx) / 18;
2351    var cy = (ny * 2 - my) / 18;
2352    var array = [
2353        ax, ay, bx, by, cx, cy, dx, dy
2354    ];
2355    return array;
2356}
2357
2358function drawCubicPartial(x1, y1, x2, y2, x3, y3, x4, y4, t1, t2) {
2359    var a = cubicPartial(x1, y1, x2, y2, x3, y3, x4, y4, t1, t2);
2360    var ax = a[0];
2361    var ay = a[1];
2362    var bx = a[2];
2363    var by = a[3];
2364    var cx = a[4];
2365    var cy = a[5];
2366    var dx = a[6];
2367    var dy = a[7];
2368    if (alreadyDrawnCubic(ax, ay, bx, by, cx, cy, dx, dy)) {
2369        return;
2370    }
2371    ctx.beginPath();
2372    ctx.moveTo((ax - srcLeft) * scale,
2373            (ay - srcTop) * scale);
2374    ctx.bezierCurveTo((bx - srcLeft) * scale,
2375            (by - srcTop) * scale,
2376            (cx - srcLeft) * scale,
2377            (cy - srcTop) * scale,
2378            (dx - srcLeft) * scale,
2379            (dy - srcTop) * scale);
2380    ctx.stroke();
2381}
2382
2383function drawCurve(c) {
2384    switch (c.length) {
2385        case 4:
2386            drawLine(c[0], c[1], c[2], c[3]);
2387            break;
2388        case 6:
2389            drawQuad(c[0], c[1], c[2], c[3], c[4], c[5]);
2390            break;
2391        case 7:
2392            drawConicWithQuads(c[0], c[1], c[2], c[3], c[4], c[5], c[6]);
2393            break;
2394        case 8:
2395            drawCubic(c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
2396            break;
2397    }
2398}
2399
2400function boundsWidth(pts) {
2401    var min = pts[0];
2402    var max = pts[0];
2403    var length = pts.length == 7 ? 6 : pts.length;
2404    for (var idx = 2; idx < length; idx += 2) {
2405        min = Math.min(min, pts[idx]);
2406        max = Math.max(max, pts[idx]);
2407    }
2408    return max - min;
2409}
2410
2411function boundsHeight(pts) {
2412    var min = pts[1];
2413    var max = pts[1];
2414    var length = pts.length == 7 ? 6 : pts.length;
2415    for (var idx = 3; idx < length; idx += 2) {
2416        min = Math.min(min, pts[idx]);
2417        max = Math.max(max, pts[idx]);
2418    }
2419    return max - min;
2420}
2421
2422function tangent(pts) {
2423    var dx = pts[2] - pts[0];
2424    var dy = pts[3] - pts[1];
2425    if (dx == 0 && dy == 0 && pts.length > 4) {
2426        dx = pts[4] - pts[0];
2427        dy = pts[5] - pts[1];
2428        if (dx == 0 && dy == 0 && pts.length == 8) {
2429            dx = pts[6] - pts[0];
2430            dy = pts[7] - pts[1];
2431        }
2432    }
2433    return Math.atan2(-dy, dx);
2434}
2435
2436function hodograph(cubic) {
2437    var hodo = [];
2438    hodo[0] = 3 * (cubic[2] - cubic[0]);
2439    hodo[1] = 3 * (cubic[3] - cubic[1]);
2440    hodo[2] = 3 * (cubic[4] - cubic[2]);
2441    hodo[3] = 3 * (cubic[5] - cubic[3]);
2442    hodo[4] = 3 * (cubic[6] - cubic[4]);
2443    hodo[5] = 3 * (cubic[7] - cubic[5]);
2444    return hodo;
2445}
2446
2447function hodograph2(cubic) {
2448    var quad = hodograph(cubic);
2449    var hodo = [];
2450    hodo[0] = 2 * (quad[2] - quad[0]);
2451    hodo[1] = 2 * (quad[3] - quad[1]);
2452    hodo[2] = 2 * (quad[4] - quad[2]);
2453    hodo[3] = 2 * (quad[5] - quad[3]);
2454    return hodo;
2455}
2456
2457function quadraticRootsReal(A, B, C, s) {
2458    if (A == 0) {
2459        if (B == 0) {
2460            s[0] = 0;
2461            return C == 0;
2462        }
2463        s[0] = -C / B;
2464        return 1;
2465    }
2466    /* normal form: x^2 + px + q = 0 */
2467    var p = B / (2 * A);
2468    var q = C / A;
2469    var p2 = p * p;
2470    if (p2 < q) {
2471        return 0;
2472    }
2473    var sqrt_D = 0;
2474    if (p2 > q) {
2475        sqrt_D = sqrt(p2 - q);
2476    }
2477    s[0] = sqrt_D - p;
2478    s[1] = -sqrt_D - p;
2479    return 1 + s[0] != s[1];
2480}
2481
2482function add_valid_ts(s, realRoots, t) {
2483    var foundRoots = 0;
2484    for (var index = 0; index < realRoots; ++index) {
2485        var tValue = s[index];
2486        if (tValue >= 0 && tValue <= 1) {
2487            for (var idx2 = 0; idx2 < foundRoots; ++idx2) {
2488                if (t[idx2] != tValue) {
2489                    t[foundRoots++] = tValue;
2490                }
2491            }
2492        }
2493    }
2494    return foundRoots;
2495}
2496
2497function quadraticRootsValidT(a, b, c, t) {
2498    var s = [];
2499    var realRoots = quadraticRootsReal(A, B, C, s);
2500    var foundRoots = add_valid_ts(s, realRoots, t);
2501    return foundRoots != 0;
2502}
2503
2504function find_cubic_inflections(cubic, tValues) {
2505    var Ax = src[2] - src[0];
2506    var Ay = src[3] - src[1];
2507    var Bx = src[4] - 2 * src[2] + src[0];
2508    var By = src[5] - 2 * src[3] + src[1];
2509    var Cx = src[6] + 3 * (src[2] - src[4]) - src[0];
2510    var Cy = src[7] + 3 * (src[3] - src[5]) - src[1];
2511    return quadraticRootsValidT(Bx * Cy - By * Cx, (Ax * Cy - Ay * Cx),
2512            Ax * By - Ay * Bx, tValues);
2513}
2514
2515function dxy_at_t(curve, type, t) {
2516    var dxy = {};
2517    if (type == PATH_LINE) {
2518        dxy.x = curve[2] - curve[0];
2519        dxy.y = curve[3] - curve[1];
2520    } else if (type == PATH_QUAD) {
2521        var a = t - 1;
2522        var b = 1 - 2 * t;
2523        var c = t;
2524        dxy.x = a * curve[0] + b * curve[2] + c * curve[4];
2525        dxy.y = a * curve[1] + b * curve[3] + c * curve[5];
2526    } else if (type == PATH_CONIC) {
2527        var p20x = curve[4] - curve[0];
2528        var p20y = curve[5] - curve[1];
2529        var p10xw = (curve[2] - curve[0]) * curve[6];
2530        var p10yw = (curve[3] - curve[1]) * curve[6];
2531        var coeff0x = curve[6] * p20x - p20x;
2532        var coeff0y = curve[6] * p20y - p20y;
2533        var coeff1x = p20x - 2 * p10xw;
2534        var coeff1y = p20y - 2 * p10yw;
2535        dxy.x = t * (t * coeff0x + coeff1x) + p10xw;
2536        dxy.y = t * (t * coeff0y + coeff1y) + p10yw;
2537    } else if (type == PATH_CUBIC) {
2538        var one_t = 1 - t;
2539        var a = curve[0];
2540        var b = curve[2];
2541        var c = curve[4];
2542        var d = curve[6];
2543        dxy.x = 3 * ((b - a) * one_t * one_t + 2 * (c - b) * t * one_t + (d - c) * t * t);
2544        a = curve[1];
2545        b = curve[3];
2546        c = curve[5];
2547        d = curve[7];
2548        dxy.y = 3 * ((b - a) * one_t * one_t + 2 * (c - b) * t * one_t + (d - c) * t * t);
2549    }
2550    return dxy;
2551}
2552
2553function dpt_at_t(curve, t) {
2554    var type = PATH_LINE + (curve.length / 2 - 2);
2555    return dxy_at_t(curve, type, t);
2556}
2557
2558function drawLabel(num, px, py) {
2559    ctx.beginPath();
2560    ctx.arc(px, py, 8, 0, Math.PI*2, true);
2561    ctx.closePath();
2562    ctx.strokeStyle = "rgba(0,0,0, 0.4)";
2563    ctx.lineWidth = num == 0 || num == 3 ? 2 : 1;
2564    ctx.stroke();
2565    ctx.fillStyle = "black";
2566    ctx.font = "normal 10px Arial";
2567  //  ctx.rotate(0.001);
2568    ctx.fillText(num, px - 2, py + 3);
2569  //  ctx.rotate(-0.001);
2570}
2571
2572function drawLabelX(ymin, num, loc) {
2573    var px = (loc - srcLeft) * scale;
2574    var py = (ymin - srcTop) * scale - 20;
2575    drawLabel(num, px, py);
2576}
2577
2578function drawLabelY(xmin, num, loc) {
2579    var px = (xmin - srcLeft) * scale - 20;
2580    var py = (loc - srcTop) * scale;
2581    drawLabel(num, px, py);
2582}
2583
2584function drawHodoOrigin(hx, hy, hMinX, hMinY, hMaxX, hMaxY) {
2585    ctx.beginPath();
2586    ctx.moveTo(hx, hy - 100);
2587    ctx.lineTo(hx, hy);
2588    ctx.strokeStyle = hMinY < 0 ? "green" : "blue";
2589    ctx.stroke();
2590    ctx.beginPath();
2591    ctx.moveTo(hx, hy);
2592    ctx.lineTo(hx, hy + 100);
2593    ctx.strokeStyle = hMaxY > 0 ? "green" : "blue";
2594    ctx.stroke();
2595    ctx.beginPath();
2596    ctx.moveTo(hx - 100, hy);
2597    ctx.lineTo(hx, hy);
2598    ctx.strokeStyle = hMinX < 0 ? "green" : "blue";
2599    ctx.stroke();
2600    ctx.beginPath();
2601    ctx.moveTo(hx, hy);
2602    ctx.lineTo(hx + 100, hy);
2603    ctx.strokeStyle = hMaxX > 0 ? "green" : "blue";
2604    ctx.stroke();
2605}
2606
2607function scalexy(x, y, mag) {
2608    var length = Math.sqrt(x * x + y * y);
2609    return mag / length;
2610}
2611
2612function drawArrow(x, y, dx, dy, s) {
2613    var dscale = scalexy(dx, dy, 1 / scale * 100 * s);
2614    dx *= dscale;
2615    dy *= dscale;
2616    ctx.beginPath();
2617    ctx.moveTo((x - srcLeft) * scale, (y - srcTop) * scale);
2618    x += dx;
2619    y += dy;
2620    ctx.lineTo((x - srcLeft) * scale, (y - srcTop) * scale);
2621    dx /= 10;
2622    dy /= 10;
2623    ctx.lineTo((x - dy - srcLeft) * scale, (y + dx - srcTop) * scale);
2624    ctx.lineTo((x + dx * 2 - srcLeft) * scale, (y + dy * 2 - srcTop) * scale);
2625    ctx.lineTo((x + dy - srcLeft) * scale, (y - dx - srcTop) * scale);
2626    ctx.lineTo((x - srcLeft) * scale, (y - srcTop) * scale);
2627    ctx.strokeStyle = "rgba(0,75,0, 0.4)";
2628    ctx.stroke();
2629}
2630
2631function x_at_t(curve, t) {
2632    var one_t = 1 - t;
2633    if (curve.length == 4) {
2634        return one_t * curve[0] + t * curve[2];
2635    }
2636    var one_t2 = one_t * one_t;
2637    var t2 = t * t;
2638    if (curve.length == 6) {
2639        return one_t2 * curve[0] + 2 * one_t * t * curve[2] + t2 * curve[4];
2640    }
2641    if (curve.length == 7) {
2642        return (one_t2 * curve[0] + 2 * one_t * t * curve[2] * curve[6] + t2 * curve[4])
2643                / (one_t2 +2 * one_t * t * curve[6] + t2);
2644    }
2645    var a = one_t2 * one_t;
2646    var b = 3 * one_t2 * t;
2647    var c = 3 * one_t * t2;
2648    var d = t2 * t;
2649    return a * curve[0] + b * curve[2] + c * curve[4] + d * curve[6];
2650}
2651
2652function y_at_t(curve, t) {
2653    var one_t = 1 - t;
2654    if (curve.length == 4) {
2655        return one_t * curve[1] + t * curve[3];
2656    }
2657    var one_t2 = one_t * one_t;
2658    var t2 = t * t;
2659    if (curve.length == 6) {
2660        return one_t2 * curve[1] + 2 * one_t * t * curve[3] + t2 * curve[5];
2661    }
2662    if (curve.length == 7) {
2663        return (one_t2 * curve[1] + 2 * one_t * t * curve[3] * curve[6] + t2 * curve[5])
2664                / (one_t2 +2 * one_t * t * curve[6] + t2);
2665    }
2666    var a = one_t2 * one_t;
2667    var b = 3 * one_t2 * t;
2668    var c = 3 * one_t * t2;
2669    var d = t2 * t;
2670    return a * curve[1] + b * curve[3] + c * curve[5] + d * curve[7];
2671}
2672
2673function pt_at_t(curve, t) {
2674    var pt = {};
2675    pt.x = x_at_t(curve, t);
2676    pt.y = y_at_t(curve, t);
2677    return pt;
2678}
2679
2680function drawOrder(curve, t, label) {
2681    var px = x_at_t(curve, t);
2682    var py = y_at_t(curve, t);
2683    var _px = (px - srcLeft) * scale;
2684    var _py = (py - srcTop) * scale;
2685    ctx.beginPath();
2686    ctx.arc(_px, _py, 15, 0, Math.PI * 2, true);
2687    ctx.closePath();
2688    ctx.fillStyle = "white";
2689    ctx.fill();
2690    if (label == 'L') {
2691        ctx.strokeStyle = "rgba(255,0,0, 1)";
2692        ctx.fillStyle = "rgba(255,0,0, 1)";
2693    } else {
2694        ctx.strokeStyle = "rgba(0,0,255, 1)";
2695        ctx.fillStyle = "rgba(0,0,255, 1)";
2696    }
2697    ctx.stroke();
2698    ctx.font = "normal 16px Arial";
2699    ctx.textAlign = "center";
2700    ctx.fillText(label, _px, _py + 5);
2701    ctx.font = "normal 10px Arial";
2702}
2703
2704function drawVisibleOrder(curve, label) {
2705    var s = pt_at_t(curve, 0);
2706    var e = pt_at_t(curve, 1);
2707    var sOn = ptOnScreen(s);
2708    var eOn = ptOnScreen(e);
2709    var defaultT = 0.85;
2710    if (sOn && eOn)
2711        return drawOrder(curve, defaultT, label);
2712    if (sOn || eOn) {
2713        if (eOn) {
2714            defaultT = 1 - defaultT;
2715        }
2716        var step = sOn ? -defaultT / 2 : (1 - defaultT) / 2;
2717        var t = defaultT;
2718        var tries = 16;
2719        do {
2720            var mid = pt_at_t(curve, t);
2721            if (ptOnScreen(mid))
2722                return drawOrder(curve, t, label);
2723            t += step;
2724            step /= 2;
2725        } while (--tries > 0);
2726        drawOrder(curve, defaultT, label);
2727    }
2728    // scattershot until we find a visible point
2729    var denom = 2;  // visit odd number num / denom to hit unique pts
2730    var tries = 6; // tries 1/2, 1/4, 3/4, 1/8, 3/8, 5/8, 7/8, 1/16 ...
2731    do {
2732        for (var numer = 1; numer < denom; numer += 2) {
2733            var t = numer / denom + 0.1;
2734            if (t >= 1) {
2735                break;
2736            }
2737            var mid = pt_at_t(curve, t);
2738            if (ptOnScreen(mid))
2739                return drawOrder(curve, t, label);
2740        }
2741        denom *= 2;
2742    } while (--tries > 0);
2743    drawOrder(curve, defaultT, label);
2744}
2745
2746function set_length(pt, newLen) {
2747    var len = Math.sqrt(pt.x * pt.x + pt.y * pt.y);
2748    var scale = newLen / len;
2749    var newPt = { x: pt.x * scale, y: pt.y * scale };
2750    return newPt;
2751}
2752
2753function drawDirection(curve, t) {
2754    var d = dpt_at_t(curve, t);
2755    d = set_length(d, 16);
2756    var pt = localToGlobal(pt_at_t(curve, t));
2757    ctx.beginPath();
2758    ctx.moveTo(pt.x - d.y, pt.y + d.x);
2759    ctx.lineTo(pt.x + d.x, pt.y + d.y);
2760    ctx.lineTo(pt.x + d.y, pt.y - d.x);
2761    ctx.strokeStyle = "rgba(0,75,0, 0.4)";
2762    ctx.stroke();
2763}
2764
2765function drawVisibleDirection(curve) {
2766    var s = pt_at_t(curve, 0);
2767    var e = pt_at_t(curve, 1);
2768    var sOn = ptOnScreen(s);
2769    var eOn = ptOnScreen(e);
2770    var defaultT = 0.65;
2771    if (sOn && eOn) {
2772        return drawDirection(curve, defaultT);
2773    }
2774    if (sOn || eOn) {
2775        if (eOn) {
2776            defaultT = 1 - defaultT;
2777        }
2778        var step = sOn ? -defaultT / 2 : (1 - defaultT) / 2;
2779        var t = defaultT;
2780        var tries = 16;
2781        do {
2782            var mid = pt_at_t(curve, t);
2783            if (ptOnScreen(mid))
2784                return drawDirection(curve, t);
2785            t += step;
2786            step /= 2;
2787        } while (--tries > 0);
2788        drawDirection(curve, defaultT);
2789    }
2790    // scattershot until we find a visible point
2791    var denom = 2;  // visit odd number num / denom to hit unique pts
2792    var tries = 6; // tries 1/2, 1/4, 3/4, 1/8, 3/8, 5/8, 7/8, 1/16 ...
2793    do {
2794        for (var numer = 1; numer < denom; numer += 2) {
2795            var t = numer / denom + 0.1;
2796            if (t >= 1) {
2797                break;
2798            }
2799            var mid = pt_at_t(curve, t);
2800            if (ptOnScreen(mid))
2801                return drawDirection(curve, t);
2802        }
2803        denom *= 2;
2804    } while (--tries > 0);
2805    drawDirection(curve, defaultT);
2806}
2807
2808function drawID(curve, t, id) {
2809    var px = x_at_t(curve, t);
2810    var py = y_at_t(curve, t);
2811    var _px = (px - srcLeft) * scale;
2812    var _py = (py - srcTop) * scale;
2813    draw_id_at(id, _px, _py);
2814}
2815
2816function localToGlobal(local) {
2817    var global = {};
2818    global.x = (local.x - srcLeft) * scale;
2819    global.y = (local.y - srcTop) * scale;
2820    return global;
2821}
2822
2823function ptOnScreen(local) {
2824    var pt = localToGlobal(local);
2825    return 10 <= pt.x && pt.x <= screenWidth - 10
2826        && 10 <= pt.y && pt.y <= screenHeight - 10;
2827}
2828
2829function drawVisibleID(curve, defaultT, id) {
2830    // determine if either or both ends are visible
2831    var s = pt_at_t(curve, 0);
2832    var e = pt_at_t(curve, 1);
2833    var sOn = ptOnScreen(s);
2834    var eOn = ptOnScreen(e);
2835    if (sOn && eOn)
2836        return drawID(curve, defaultT, id);
2837    if (sOn || eOn) {
2838        var step = sOn ? -defaultT / 2 : (1 - defaultT) / 2;
2839        var t = defaultT;
2840        var tries = 16;
2841        do {
2842            var mid = pt_at_t(curve, t);
2843            if (ptOnScreen(mid))
2844                return drawID(curve, t, id);
2845            t += step;
2846            step /= 2;
2847        } while (--tries > 0);
2848        drawID(curve, defaultT, id);
2849    }
2850    // scattershot until we find a visible point
2851    var denom = 2;  // visit odd number num / denom to hit unique pts
2852    var tries = 6; // tries 1/2, 1/4, 3/4, 1/8, 3/8, 5/8, 7/8, 1/16 ...
2853    do {
2854        for (var numer = 1; numer < denom; numer += 2) {
2855            var t = numer / denom;
2856            var mid = pt_at_t(curve, t);
2857            if (ptOnScreen(mid))
2858                return drawID(curve, t, id);
2859        }
2860        denom *= 2;
2861    } while (--tries > 0);
2862    drawID(curve, defaultT, id);
2863}
2864
2865function draw_id_at(id, _px, _py) {
2866    ctx.beginPath();
2867    ctx.arc(_px, _py, 15, 0, Math.PI * 2, true);
2868    ctx.closePath();
2869    ctx.fillStyle = "white";
2870    ctx.fill();
2871    ctx.strokeStyle = "rgba(127,127,0, 1)";
2872    ctx.fillStyle = "rgba(127,127,0, 1)";
2873    ctx.stroke();
2874    ctx.font = "normal 16px Arial";
2875    ctx.textAlign = "center";
2876    ctx.fillText(id, _px, _py + 5);
2877    ctx.font = "normal 10px Arial";
2878}
2879
2880function drawLinePartialID(id, x1, y1, x2, y2, t1, t2) {
2881    var curve = [x1, y1, x2, y2];
2882    drawCurvePartialID(id, curve, t1, t2);
2883}
2884
2885function drawLineID(id, x1, y1, x2, y2) {
2886    drawLinePartialID(id, x1, y1, x2, y2, 0, 1);
2887}
2888
2889function drawQuadPartialID(id, x1, y1, x2, y2, x3, y3, t1, t2) {
2890    var curve = [x1, y1, x2, y2, x3, y3];
2891    drawCurvePartialID(id, curve, t1, t2);
2892}
2893
2894function drawQuadID(id, x1, y1, x2, y2, x3, y3) {
2895    drawQuadPartialID(id, x1, y1, x2, y2, x3, y3, 0, 1);
2896}
2897
2898function drawConicPartialID(id, x1, y1, x2, y2, x3, y3, w, t1, t2) {
2899    var curve = [x1, y1, x2, y2, x3, y3, w];
2900    drawCurvePartialID(id, curve, t1, t2);
2901}
2902
2903function drawConicID(id, x1, y1, x2, y2, x3, y3, w) {
2904    drawConicPartialID(id, x1, y1, x2, y2, x3, y3, w, 0, 1);
2905}
2906
2907function drawCubicPartialID(id, x1, y1, x2, y2, x3, y3, x4, y4, t1, t2) {
2908    var curve = [x1, y1, x2, y2, x3, y3, x4, y4];
2909    drawCurvePartialID(id, curve, t1, t2);
2910}
2911
2912function drawCubicID(id, x1, y1, x2, y2, x3, y3, x4, y4) {
2913    drawCubicPartialID(id, x1, y1, x2, y2, x3, y3, x4, y4, 0, 1);
2914}
2915
2916function  drawCurvePartialID(id, curve, t1, t2) {
2917    drawVisibleID(curve, (t1 + t2) / 2, id);
2918}
2919
2920function drawCurveSpecials(test, curve, type) {
2921    if (pt_labels) {
2922        drawPoints(curve, type, pt_labels == 2);
2923    }
2924    if (control_lines != 0) {
2925        drawControlLines(curve, type, control_lines);
2926    }
2927    if (curve_t) {
2928        drawPointAtT(curve, type);
2929    }
2930    if (draw_midpoint) {
2931        var mid = pointAtT(curve, type, 0.5);
2932        drawPoint(mid.x, mid.y, true);
2933    }
2934    if (draw_id) {
2935        var id = idByCurve(test, curve, type);
2936        if (id >= 0) {
2937            drawVisibleID(curve, 0.5, id);
2938        }
2939    }
2940    if (draw_direction) {
2941        drawVisibleDirection(curve);
2942    }
2943    if (type == PATH_LINE) {
2944        return;
2945    }
2946    if (draw_deriviatives > 0) {
2947        var d = dxy_at_t(curve, type, 0);
2948        drawArrow(curve[0], curve[1], d.x, d.y, 1);
2949        if (draw_deriviatives == 2) {
2950            d = dxy_at_t(curve, type, 1);
2951            if (type == PATH_CUBIC) {
2952                drawArrow(curve[6], curve[7], d.x, d.y, 1);
2953            } else {
2954                drawArrow(curve[4], curve[5], d.x, d.y, 1);
2955            }
2956        }
2957        if (draw_midpoint) {
2958            var mid = pointAtT(curve, type, 0.5);
2959            d = dxy_at_t(curve, type, 0.5);
2960            drawArrow(mid.x, mid.y, d.x, d.y, 1);
2961        }
2962    }
2963    if (type != PATH_CUBIC) {
2964        return;
2965    }
2966    if (draw_sequence) {
2967        var ymin = Math.min(curve[1], curve[3], curve[5], curve[7]);
2968        for (var i = 0; i < 8; i+= 2) {
2969            drawLabelX(ymin, i >> 1, curve[i]);
2970        }
2971        var xmin = Math.min(curve[0], curve[2], curve[4], curve[6]);
2972        for (var i = 1; i < 8; i+= 2) {
2973            drawLabelY(xmin, i >> 1, curve[i]);
2974        }
2975    }
2976}
2977
2978function logCurves(test) {
2979    for (curves in test) {
2980        var curve = test[curves];
2981        dumpCurve(curve);
2982    }
2983}
2984
2985function curveToString(curve) {
2986    var str = "{{";
2987    var length = curve.length == 7 ? 6 : curve.length;
2988    if (curve.length == 7) {
2989        str += "{";
2990    }
2991    for (i = 0; i < length; i += 2) {
2992        str += curve[i].toFixed(decimal_places) + "," + curve[i + 1].toFixed(decimal_places);
2993        if (i < curve.length - 2) {
2994            str += "}, {";
2995        }
2996    }
2997    str += "}";
2998    if (curve.length == 7) {
2999        str += "}, " + curve[6].toFixed(decimal_places);
3000    }
3001    str += "}";
3002    return str;
3003}
3004
3005function dumpCurve(curve) {
3006    console.log(curveToString(curve));
3007}
3008
3009function draw(test, lines, title) {
3010    ctx.fillStyle = "rgba(0,0,0, 0.1)";
3011    ctx.font = "normal 50px Arial";
3012    ctx.textAlign = "left";
3013    ctx.fillText(title, 50, 50);
3014    ctx.font = "normal 10px Arial";
3015    ctx.lineWidth = "1.001"; "0.999";
3016    var secondPath = test.length;
3017    var closeCount = 0;
3018    logStart = -1;
3019    logRange = 0;
3020    // find last active rec type at this step
3021    var curType = test[0];
3022    var curStep = 0;
3023    var hasOp = false;
3024    var lastActive = 0;
3025    var lastAdd = 0;
3026    var lastCoin = 0;
3027    var lastSect = 0;
3028    var lastSort = 0;
3029    var lastMark = 0;
3030    var lastTop = 0;
3031    activeCount = 0;
3032    addCount = 0;
3033    angleCount = 0;
3034    opCount = 0;
3035    sectCount = 0;
3036    sortCount = 0;
3037    topCount = 0;
3038    markCount = 0;
3039    activeMax = 0;
3040    addMax = 0;
3041    angleMax = 0;
3042    coinMax = 0;
3043    opMax = 0;
3044    sectMax = 0;
3045    sectMax2 = 0;
3046    sortMax = 0;
3047    topMax = 0;
3048    markMax = 0;
3049    lastIndex = test.length - 3;
3050    for (var tIndex = 0; tIndex < test.length; tIndex += 3) {
3051        var recType = test[tIndex];
3052        if (!typeof recType == 'number' || recType < REC_TYPE_UNKNOWN || recType > REC_TYPE_LAST) {
3053            console.log("unknown rec type: " + recType);
3054            throw "stop execution";
3055        }
3056   //     if (curType == recType && curType != REC_TYPE_ADD) {
3057   //         continue;
3058   //     }
3059        var inStepRange = step_limit == 0 || curStep < step_limit;
3060        curType = recType;
3061        if (recType == REC_TYPE_OP) {
3062            hasOp = true;
3063            continue;
3064        }
3065        if (recType == REC_TYPE_UNKNOWN) {
3066            // these types do not advance step
3067            continue;
3068        }
3069        var bumpStep = false;
3070        var records = test[tIndex + 2];
3071        var fragType = records[0];
3072        if (recType == REC_TYPE_ADD) {
3073            if (records.length != 2) {
3074                console.log("expect only two elements: " + records.length);
3075                throw "stop execution";
3076            }
3077            if (fragType == ADD_MOVETO || fragType == ADD_CLOSE) {
3078                continue;
3079            }
3080            ++addMax;
3081            if (!draw_add || !inStepRange) {
3082                continue;
3083            }
3084            lastAdd = tIndex;
3085            ++addCount;
3086            bumpStep = true;
3087        }
3088        if (recType == REC_TYPE_PATH && hasOp) {
3089            secondPath = tIndex;
3090        }
3091        if (recType == REC_TYPE_PATH2 && hasOp) {
3092            secondPath = tIndex;
3093        }
3094        if (recType == REC_TYPE_ACTIVE) {
3095            ++activeMax;
3096            if (!draw_active || !inStepRange) {
3097                continue;
3098            }
3099            lastActive = tIndex;
3100            ++activeCount;
3101            bumpStep = true;
3102        }
3103        if (recType == REC_TYPE_ACTIVE_OP) {
3104            ++opMax;
3105            if (!draw_op || !inStepRange) {
3106                continue;
3107            }
3108            lastOp = tIndex;
3109            ++opCount;
3110            bumpStep = true;
3111        }
3112        if (recType == REC_TYPE_AFTERPART) {
3113            if (draw_angle != 3 || !inStepRange) {
3114                continue;
3115            }
3116            lastAngle = tIndex;
3117            ++angleCount;
3118            bumpStep = true;
3119        }
3120        if (recType == REC_TYPE_ANGLE) {
3121            ++angleMax;
3122            if (draw_angle == 0 || draw_angle == 3 || !inStepRange) {
3123                continue;
3124            }
3125            lastAngle = tIndex;
3126            ++angleCount;
3127            bumpStep = true;
3128        }
3129        if (recType == REC_TYPE_COINCIDENCE) {
3130            ++coinMax;
3131            if (!draw_coincidence || !inStepRange) {
3132                continue;
3133            }
3134            lastCoin = tIndex;
3135            ++coinCount;
3136            bumpStep = true;
3137        }
3138        if (recType == REC_TYPE_SECT) {
3139            if (records.length != 2) {
3140                console.log("expect only two elements: " + records.length);
3141                throw "stop execution";
3142            }
3143            ++sectMax;
3144            var sectBump = 1;
3145            switch (fragType) {
3146                case INTERSECT_LINE:
3147                case INTERSECT_QUAD_LINE:
3148                case INTERSECT_QUAD:
3149                case INTERSECT_CONIC_LINE:
3150                case INTERSECT_CONIC_QUAD:
3151                case INTERSECT_CONIC:
3152                case INTERSECT_SELF_CUBIC:
3153                case INTERSECT_CUBIC_LINE:
3154                case INTERSECT_CUBIC_QUAD:
3155                case INTERSECT_CUBIC:
3156                    sectBump = 1;
3157                    break;
3158                case INTERSECT_LINE_2:
3159                case INTERSECT_QUAD_LINE_2:
3160                case INTERSECT_QUAD_2:
3161                case INTERSECT_CONIC_LINE_2:
3162                case INTERSECT_CONIC_QUAD_2:
3163                case INTERSECT_CONIC_2:
3164                case INTERSECT_CUBIC_LINE_2:
3165                case INTERSECT_CUBIC_QUAD_2:
3166                case INTERSECT_CUBIC_2:
3167                    sectBump = 2;
3168                    break;
3169                case INTERSECT_LINE_NO:
3170                case INTERSECT_QUAD_LINE_NO:
3171                case INTERSECT_QUAD_NO:
3172                case INTERSECT_CONIC_LINE_NO:
3173                case INTERSECT_CONIC_QUAD_NO:
3174                case INTERSECT_CONIC_NO:
3175                case INTERSECT_SELF_CUBIC_NO:
3176                case INTERSECT_CUBIC_LINE_NO:
3177                case INTERSECT_CUBIC_QUAD_NO:
3178                case INTERSECT_CUBIC_NO:
3179                    sectBump = 0;
3180                    break;
3181                case INTERSECT_CONIC_QUAD_3:
3182                case INTERSECT_CUBIC_LINE_3:
3183                case INTERSECT_CUBIC_QUAD_3:
3184                case INTERSECT_CUBIC_3:
3185                    sectBump = 3;
3186                    break;
3187                case INTERSECT_CONIC_QUAD_4:
3188                case INTERSECT_CUBIC_QUAD_4:
3189                case INTERSECT_CUBIC_4:
3190                    sectBump = 4;
3191                    break;
3192                default:
3193                    console.log("missing case " + records.length);
3194                    throw "stop execution";
3195            }
3196            sectMax2 += sectBump;
3197            if (draw_intersection <= 1 || !inStepRange) {
3198                continue;
3199            }
3200            lastSect = tIndex;
3201            sectCount += sectBump;
3202            bumpStep = true;
3203        }
3204        if (recType == REC_TYPE_SORT) {
3205            ++sortMax;
3206            if (!draw_sort || !inStepRange) {
3207                continue;
3208            }
3209            lastSort = tIndex;
3210            ++sortCount;
3211            bumpStep = true;
3212        }
3213        if (recType == REC_TYPE_TOP) {
3214            ++topMax;
3215            if (!draw_top || !inStepRange) {
3216                continue;
3217            }
3218            lastTop = tIndex;
3219            ++topCount;
3220            bumpStep = true;
3221        }
3222        if (recType == REC_TYPE_MARK) {
3223            ++markMax;
3224            if (!draw_mark || !inStepRange) {
3225                continue;
3226            }
3227            lastMark = tIndex;
3228            ++markCount;
3229            bumpStep = true;
3230        }
3231        if (bumpStep) {
3232            lastIndex = tIndex;
3233            logStart = test[tIndex + 1];
3234            logRange = records.length / 2;
3235            ++curStep;
3236        }
3237    }
3238    stepMax = (draw_add ? addMax : 0)
3239            + (draw_active ? activeMax : 0)
3240            + (draw_angle ? angleMax : 0)
3241            + (draw_coincidence ? coinMax : 0)
3242            + (draw_op ? opMax : 0)
3243            + (draw_sort ? sortMax : 0)
3244            + (draw_top ? topMax : 0)
3245            + (draw_mark ? markMax : 0)
3246            + (draw_intersection == 2 ? sectMax : draw_intersection == 3 ? sectMax2 : 0);
3247    if (stepMax == 0) {
3248        stepMax = addMax + activeMax + angleMax + coinMax + opMax + sortMax + topMax + markMax;
3249    }
3250    drawnPts = [];
3251    drawnLines = [];
3252    drawnQuads = [];
3253    drawnConics = [];
3254    drawnCubics = [];
3255    focusXmin = focusYmin = Infinity;
3256    focusXmax = focusYmax = -Infinity;
3257    var pathIndex = 0;
3258    var opLetter = 'S';
3259    for (var tIndex = lastIndex; tIndex >= 0; tIndex -= 3) {
3260        var recType = test[tIndex];
3261        var records = test[tIndex + 2];
3262        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
3263            var fragType = records[recordIndex];
3264            if (!typeof fragType == 'number' || fragType < 1 || fragType > FRAG_TYPE_LAST) {
3265                console.log("unknown in range frag type: " + fragType);
3266                throw "stop execution";
3267            }
3268            var frags = records[recordIndex + 1];
3269            focus_enabled = false;
3270            switch (recType) {
3271                case REC_TYPE_COMPUTED:
3272                    if (draw_computed == 0) {
3273                        continue;
3274                    }
3275                    ctx.lineWidth = 1;
3276                    ctx.strokeStyle = pathIndex == 0 ? "black" : "red";
3277                    ctx.fillStyle = "blue";
3278                    var drawThis = false;
3279                    switch (fragType) {
3280                        case PATH_QUAD:
3281                            if ((draw_computed & 0x9) == 1 || ((draw_computed & 8) != 0
3282                                    && (draw_computed & 7) == pathIndex)) {
3283                                drawQuad(frags[0], frags[1], frags[2], frags[3],
3284                                        frags[4], frags[5]);
3285                                drawThis = true;
3286                            }
3287                            break;
3288                        case PATH_CONIC:
3289                            if ((draw_computed & 0xA) == 2 || ((draw_computed & 8) != 0
3290                                    && (draw_computed & 7) == pathIndex)) {
3291                                drawConicWithQuads(frags[0], frags[1], frags[2], frags[3],
3292                                        frags[4], frags[5], frags[6]);
3293                                drawThis = true;
3294                            }
3295                            break;
3296                        case PATH_CUBIC:
3297                            if ((draw_computed & 0xC) == 4 || ((draw_computed & 8) != 0
3298                                     && (draw_computed & 7) == pathIndex)) {
3299                                drawCubic(frags[0], frags[1], frags[2], frags[3],
3300                                        frags[4], frags[5], frags[6], frags[7]);
3301                                drawThis = true;
3302                            }
3303                            ++pathIndex;
3304                            break;
3305                        case COMPUTED_SET_1:
3306                            pathIndex = 0;
3307                            break;
3308                        case COMPUTED_SET_2:
3309                            pathIndex = 1;
3310                            break;
3311                        default:
3312                            console.log("unknown REC_TYPE_COMPUTED frag type: " + fragType);
3313                            throw "stop execution";
3314                    }
3315                    if (!drawThis || collect_bounds) {
3316                        break;
3317                    }
3318                    drawCurveSpecials(test, frags, fragType);
3319                    break;
3320                case REC_TYPE_ALIGNED:
3321                    if (draw_path < 4) {
3322                        continue;
3323                    }
3324                case REC_TYPE_PATH:
3325                case REC_TYPE_PATH2:
3326                    if (REC_TYPE_ALIGNED != recType && draw_path >= 4) {
3327                        continue;
3328                    }
3329                    if (!draw_path) {
3330                        continue;
3331                    }
3332                    var firstPath = tIndex < secondPath;
3333                    if ((draw_path & (firstPath ? 1 : 2)) == 0) {
3334                        continue;
3335                    }
3336                    ctx.lineWidth = 1;
3337                    ctx.strokeStyle = firstPath ? "black" : "red";
3338                    ctx.fillStyle = "blue";
3339                    var frags2 = [];
3340                    switch (fragType) {
3341                        case PATH_LINE:
3342                            for (var i = 0; i < 4; ++ i) { frags2[i] = frags[i + 1]; }
3343                            drawLine(frags2[0], frags2[1], frags2[2], frags2[3]);
3344                            break;
3345                        case PATH_QUAD:
3346                            for (var i = 0; i < 6; ++ i) { frags2[i] = frags[i + 1]; }
3347                            drawQuad(frags2[0], frags2[1], frags2[2], frags2[3],
3348                                    frags2[4], frags2[5]);
3349                            break;
3350                        case PATH_CONIC:
3351                            for (var i = 0; i < 7; ++ i) { frags2[i] = frags[i + 1]; }
3352                            drawConicWithQuads(frags2[0], frags2[1], frags2[2], frags2[3],
3353                                    frags2[4], frags2[5], frags2[6]);
3354                            break;
3355                        case PATH_CUBIC:
3356                            for (var i = 0; i < 8; ++ i) { frags2[i] = frags[i + 1]; }
3357                            drawCubic(frags2[0], frags2[1], frags2[2], frags2[3],
3358                                    frags2[4], frags2[5], frags2[6], frags2[7]);
3359                            break;
3360                        default:
3361                            console.log("unknown " + recType + " frag type: " + fragType);
3362                            throw "stop execution";
3363                    }
3364                    if (collect_bounds) {
3365                        break;
3366                    }
3367                    drawCurveSpecials(test, frags2, fragType);
3368                    break;
3369                case REC_TYPE_OP:
3370                    switch (fragType) {
3371                        case OP_INTERSECT: opLetter = 'I'; break;
3372                        case OP_DIFFERENCE: opLetter = 'D'; break;
3373                        case OP_UNION: opLetter = 'U'; break;
3374                        case OP_XOR: opLetter = 'X'; break;
3375                        default:
3376                            console.log("unknown REC_TYPE_OP frag type: " + fragType);
3377                            throw "stop execution";
3378                    }
3379                    break;
3380                case REC_TYPE_ACTIVE:
3381                    if (!draw_active || (step_limit > 0 && tIndex < lastActive)) {
3382                        continue;
3383                    }
3384                    var x1 = frags[SPAN_X1];
3385                    var y1 = frags[SPAN_Y1];
3386                    var x2 = frags[SPAN_X2];
3387                    var y2 = frags[SPAN_Y2];
3388                    var x3, y3, x3, y4, w;
3389                    ctx.lineWidth = 3;
3390                    ctx.strokeStyle = "rgba(0,0,255, 0.3)";
3391                    focus_enabled = true;
3392                    switch (fragType) {
3393                        case ACTIVE_LINE_SPAN:
3394                            drawLine(x1, y1, x2, y2);
3395                            if (draw_id) {
3396                                drawLineID(frags[0], x1, y1, x2, y2);
3397                            }
3398                            if (pt_labels) {
3399                                var curve = [x1, y1, x2, y2];
3400                                ctx.fillStyle = "blue";
3401                                drawPoints(curve, PATH_LINE, pt_labels == 2);
3402                            }
3403                             break;
3404                        case ACTIVE_QUAD_SPAN:
3405                            x3 = frags[SPAN_X3];
3406                            y3 = frags[SPAN_Y3];
3407                            drawQuad(x1, y1, x2, y2, x3, y3);
3408                            if (draw_id) {
3409                                drawQuadID(frags[0], x1, y1, x2, y2, x3, y3);
3410                            }
3411                            if (pt_labels) {
3412                                var curve = [x1, y1, x2, y2, x3, y3];
3413                                ctx.fillStyle = "blue";
3414                                drawPoints(curve, PATH_QUAD, pt_labels == 2);
3415                            }
3416                            break;
3417                        case ACTIVE_CONIC_SPAN:
3418                            x3 = frags[SPAN_X3];
3419                            y3 = frags[SPAN_Y3];
3420                            w = frags[SPAN_K_W];
3421                            drawConicWithQuads(x1, y1, x2, y2, x3, y3, w);
3422                            if (draw_id) {
3423                                drawConicID(frags[0], x1, y1, x2, y2, x3, y3, w);
3424                            }
3425                            if (pt_labels) {
3426                                var curve = [x1, y1, x2, y2, x3, y3, w];
3427                                ctx.fillStyle = "blue";
3428                                drawPoints(curve, PATH_CONIC, pt_labels == 2);
3429                            }
3430                            break;
3431                        case ACTIVE_CUBIC_SPAN:
3432                            x3 = frags[SPAN_X3];
3433                            y3 = frags[SPAN_Y3];
3434                            x4 = frags[SPAN_X4];
3435                            y4 = frags[SPAN_Y4];
3436                            drawCubic(x1, y1, x2, y2, x3, y3, x4, y4);
3437                            if (draw_id) {
3438                                drawCubicID(frags[0], x1, y1, x2, y2, x3, y3, x4, y4);
3439                            }
3440                            if (pt_labels) {
3441                                var curve = [x1, y1, x2, y2, x3, y3, x4, y4];
3442                                ctx.fillStyle = "blue";
3443                                drawPoints(curve, PATH_CUBIC, pt_labels == 2);
3444                            }
3445                            break;
3446                        default:
3447                            console.log("unknown REC_TYPE_ACTIVE frag type: " + fragType);
3448                            throw "stop execution";
3449                    }
3450                    break;
3451                case REC_TYPE_ACTIVE_OP:
3452                    if (!draw_op || (step_limit > 0 && tIndex < lastOp)) {
3453                        continue;
3454                    }
3455                    focus_enabled = true;
3456                    ctx.lineWidth = 3;
3457                    var activeSpan = frags[7] == "1";
3458                    ctx.strokeStyle = activeSpan ? "rgba(45,160,0, 0.3)" : "rgba(255,45,0, 0.5)";
3459                    var curve = curvePartialByID(test, frags[0], frags[1], frags[2]);
3460                    drawCurve(curve);
3461                    if (draw_op > 1) {
3462                        drawArc(curve, false, frags[3], frags[4]);
3463                        drawArc(curve, true, frags[5], frags[6]);
3464                    }
3465                    break;
3466                case REC_TYPE_ADD:
3467                    if (!draw_add) {
3468                        continue;
3469                    }
3470                    ctx.lineWidth = 3;
3471                    ctx.strokeStyle = closeCount == 0 ? "rgba(0,0,255, 0.3)"
3472                            : closeCount == 1 ? "rgba(0,127,0, 0.3)"
3473                            : closeCount == 2 ? "rgba(0,127,127, 0.3)"
3474                            : closeCount == 3 ? "rgba(127,127,0, 0.3)"
3475                            : "rgba(127,0,127, 0.3)";
3476                    focus_enabled = true;
3477                    switch (fragType) {
3478                        case ADD_MOVETO:
3479                            break;
3480                        case ADD_LINETO:
3481                            if (step_limit == 0 || tIndex >= lastAdd) {
3482                                drawLine(frags[0], frags[1], frags[2], frags[3]);
3483                            }
3484                            break;
3485                        case ADD_QUADTO:
3486                            if (step_limit == 0 || tIndex >= lastAdd) {
3487                                drawQuad(frags[0], frags[1], frags[2], frags[3], frags[4], frags[5]);
3488                            }
3489                            break;
3490                        case ADD_CONICTO:
3491                            if (step_limit == 0 || tIndex >= lastAdd) {
3492                                drawConicWithQuads(frags[0], frags[1], frags[2], frags[3],
3493                                        frags[4], frags[5], frags[6]);
3494                            }
3495                            break;
3496                        case ADD_CUBICTO:
3497                            if (step_limit == 0 || tIndex >= lastAdd) {
3498                                drawCubic(frags[0], frags[1], frags[2], frags[3],
3499                                        frags[4], frags[5], frags[6], frags[7]);
3500                            }
3501                            break;
3502                        case ADD_CLOSE:
3503                            ++closeCount;
3504                            break;
3505                        case ADD_FILL:
3506                            break;
3507                        default:
3508                            console.log("unknown REC_TYPE_ADD frag type: " + fragType);
3509                            throw "stop execution";
3510                    }
3511                    break;
3512                case REC_TYPE_ANGLE:
3513                    angleBetween = frags[18] == "T";
3514                    afterIndex = 0;
3515                    if (draw_angle == 0 || draw_angle == 3 || (step_limit > 0 && tIndex < lastAngle)) {
3516                        continue;
3517                    }
3518                    focus_enabled = true;
3519                    ctx.lineWidth = 3;
3520                    ctx.strokeStyle = "rgba(127,45,127, 0.3)";
3521                    var leftCurve = curvePartialByID(test, frags[0], frags[4], frags[5]);
3522                    var midCurve = curvePartialByID(test, frags[6], frags[10], frags[11]);
3523                    var rightCurve = curvePartialByID(test, frags[12], frags[16], frags[17]);
3524                    drawCurve(leftCurve);
3525                    drawCurve(rightCurve);
3526                    ctx.strokeStyle = angleBetween ? "rgba(0,160,45, 0.3)" : "rgba(255,0,45, 0.5)";
3527                    drawCurve(midCurve);
3528                    if (draw_angle > 1) {
3529                        drawVisibleOrder(leftCurve, 'L');
3530                        drawVisibleOrder(rightCurve, 'R');
3531                    }
3532                    if (draw_id) {
3533                        drawVisibleID(leftCurve, 0.5, frags[0]);
3534                        drawVisibleID(midCurve, 0.5, frags[6]);
3535                        drawVisibleID(rightCurve, 0.5, frags[12]);
3536                    }
3537                    break;
3538                case REC_TYPE_AFTERPART:
3539                    if (draw_angle != 3 || (step_limit > 0 && tIndex < lastAngle)) {
3540                        continue;
3541                    }
3542                    ctx.strokeStyle = afterIndex == 0 ? "rgba(255,0,0, 1.0)"
3543                            : (afterIndex == 1) == angleBetween ? "rgba(0,128,0, 1.0)"
3544                            : "rgba(0,0,255, 1.0)";
3545                    var curve;
3546                    var id;
3547                    switch (fragType) {
3548                        case PATH_LINE:
3549                            curve = [ frags[0], frags[1], frags[2], frags[3] ];
3550                            id = frags[4];
3551                            break;
3552                        case PATH_QUAD:
3553                            curve = [ frags[0], frags[1], frags[2], frags[3],
3554                                     frags[4], frags[5] ];
3555                            id = frags[6];
3556                            break;
3557                        case PATH_CONIC:
3558                            curve = [ frags[0], frags[1], frags[2], frags[3],
3559                                     frags[4], frags[5], frags[6] ];
3560                            id = frags[7];
3561                            break;
3562                        case PATH_CUBIC:
3563                            curve = [ frags[0], frags[1], frags[2], frags[3],
3564                                     frags[4], frags[5], frags[6], frags[7] ];
3565                            id = frags[8];
3566                            break;
3567                        default:
3568                            console.log("unknown REC_TYPE_AFTERPART frag type: " + fragType);
3569                            throw "stop execution";
3570                    }
3571                    drawCurve(curve);
3572                    if (draw_id) {
3573                        drawVisibleID(curve, 0.5, id);
3574                    }
3575                    ++afterIndex;
3576                    break;
3577                case REC_TYPE_COINCIDENCE:
3578                    if (!draw_coincidence || (step_limit > 0 && tIndex < lastCoin)) {
3579                        continue;
3580                    }
3581                    focus_enabled = true;
3582                    ctx.lineWidth = 3;
3583                    ctx.strokeStyle = "rgba(127,45,63, 0.3)";
3584                    var curve = curvePartialByID(test, frags[0], frags[1], frags[2]);
3585                    drawCurve(curve);
3586                    break;
3587                case REC_TYPE_SECT:
3588                    if (!draw_intersection) {
3589                        continue;
3590                    }
3591                    if (draw_intersection != 1 && (step_limit > 0 && tIndex < lastSect)) {
3592                        continue;
3593                    }
3594                    // draw_intersection == 1 : show all
3595                    // draw_intersection == 2 : step == 0 ? show all : show intersection line #step
3596                    // draw_intersection == 3 : step == 0 ? show all : show intersection #step
3597                    ctx.lineWidth = 1;
3598                    ctx.strokeStyle = "rgba(0,0,255, 0.3)";
3599                    ctx.fillStyle = "blue";
3600                    focus_enabled = true;
3601                    var f = [];
3602                    var c1s;
3603                    var c1l;
3604                    var c2s;
3605                    var c2l;
3606                    switch (fragType) {
3607                        case INTERSECT_LINE:
3608                            f.push(5, 6, 0, 7);
3609                            c1s = 1; c1l = 4; c2s = 8; c2l = 4;
3610                            break;
3611                        case INTERSECT_LINE_2:
3612                            f.push(5, 6, 0, 10);
3613                            f.push(8, 9, 7, 15);
3614                            c1s = 1; c1l = 4; c2s = 11; c2l = 4;
3615                            break;
3616                        case INTERSECT_LINE_NO:
3617                            c1s = 0; c1l = 4; c2s = 4; c2l = 4;
3618                            break;
3619                        case INTERSECT_QUAD_LINE:
3620                            f.push(7, 8, 0, 9);
3621                            c1s = 1; c1l = 6; c2s = 10; c2l = 4;
3622                            break;
3623                        case INTERSECT_QUAD_LINE_2:
3624                            f.push(7, 8, 0, 12);
3625                            f.push(10, 11, 9, 17);
3626                            c1s = 1; c1l = 6; c2s = 13; c2l = 4;
3627                            break;
3628                        case INTERSECT_QUAD_LINE_NO:
3629                            c1s = 0; c1l = 6; c2s = 6; c2l = 4;
3630                            break;
3631                        case INTERSECT_QUAD:
3632                            f.push(7, 8, 0, 9);
3633                            c1s = 1; c1l = 6; c2s = 10; c2l = 6;
3634                            break;
3635                        case INTERSECT_QUAD_2:
3636                            f.push(7, 8, 0, 12);
3637                            f.push(10, 11, 9, 19);
3638                            c1s = 1; c1l = 6; c2s = 13; c2l = 6;
3639                            break;
3640                        case INTERSECT_QUAD_NO:
3641                            c1s = 0; c1l = 6; c2s = 6; c2l = 6;
3642                            break;
3643                        case INTERSECT_CONIC_LINE:
3644                            f.push(8, 9, 0, 10);
3645                            c1s = 1; c1l = 7; c2s = 11; c2l = 4;
3646                            break;
3647                        case INTERSECT_CONIC_LINE_2:
3648                            f.push(8, 9, 0, 12);
3649                            f.push(11, 12, 10, 18);
3650                            c1s = 1; c1l = 7; c2s = 14; c2l = 4;
3651                            break;
3652                        case INTERSECT_CONIC_LINE_NO:
3653                            c1s = 0; c1l = 7; c2s = 7; c2l = 4;
3654                            break;
3655                        case INTERSECT_CONIC_QUAD:
3656                            f.push(8, 9, 0, 10);
3657                            c1s = 1; c1l = 7; c2s = 11; c2l = 6;
3658                            break;
3659                        case INTERSECT_CONIC_QUAD_2:
3660                            f.push(8, 9, 0, 12);
3661                            f.push(11, 12, 10, 18);
3662                            c1s = 1; c1l = 7; c2s = 14; c2l = 6;
3663                            break;
3664                        case INTERSECT_CONIC_QUAD_3:
3665                            f.push(8, 9, 0, 15);
3666                            f.push(11, 12, 10, 21);
3667                            f.push(14, 15, 13, 22);
3668                            c1s = 1; c1l = 7; c2s = 17; c2l = 6;
3669                            break;
3670                        case INTERSECT_CONIC_QUAD_4:
3671                            f.push(8, 9, 0, 18);
3672                            f.push(11, 12, 10, 24);
3673                            f.push(14, 15, 13, 25);
3674                            f.push(17, 18, 16, 26);
3675                            c1s = 1; c1l = 7; c2s = 20; c2l = 6;
3676                            break;
3677                        case INTERSECT_CONIC_QUAD_NO:
3678                            c1s = 0; c1l = 7; c2s = 7; c2l = 6;
3679                            break;
3680                        case INTERSECT_CONIC:
3681                            f.push(8, 9, 0, 10);
3682                            c1s = 1; c1l = 7; c2s = 11; c2l = 7;
3683                            break;
3684                        case INTERSECT_CONIC_2:
3685                            f.push(8, 9, 0, 13);
3686                            f.push(11, 12, 10, 21);
3687                            c1s = 1; c1l = 7; c2s = 14; c2l = 7;
3688                            break;
3689                        case INTERSECT_CONIC_NO:
3690                            c1s = 0; c1l = 7; c2s = 7; c2l = 7;
3691                            break;
3692                        case INTERSECT_SELF_CUBIC:
3693                            f.push(9, 10, 0, 11);
3694                            c1s = 1; c1l = 8; c2s = 0; c2l = 0;
3695                            break;
3696                        case INTERSECT_SELF_CUBIC_NO:
3697                            c1s = 0; c1l = 8; c2s = 0; c2l = 0;
3698                            break;
3699                        case INTERSECT_CUBIC_LINE:
3700                            f.push(9, 10, 0, 11);
3701                            c1s = 1; c1l = 8; c2s = 12; c2l = 4;
3702                            break;
3703                        case INTERSECT_CUBIC_LINE_2:
3704                            f.push(9, 10, 0, 14);
3705                            f.push(12, 13, 11, 19);
3706                            c1s = 1; c1l = 8; c2s = 15; c2l = 4;
3707                            break;
3708                        case INTERSECT_CUBIC_LINE_3:
3709                            f.push(9, 10, 0, 17);
3710                            f.push(12, 13, 11, 22);
3711                            f.push(15, 16, 14, 23);
3712                            c1s = 1; c1l = 8; c2s = 18; c2l = 4;
3713                            break;
3714                        case INTERSECT_CUBIC_QUAD_NO:
3715                            c1s = 0; c1l = 8; c2s = 8; c2l = 6;
3716                            break;
3717                        case INTERSECT_CUBIC_QUAD:
3718                            f.push(9, 10, 0, 11);
3719                            c1s = 1; c1l = 8; c2s = 12; c2l = 6;
3720                            break;
3721                        case INTERSECT_CUBIC_QUAD_2:
3722                            f.push(9, 10, 0, 14);
3723                            f.push(12, 13, 11, 21);
3724                            c1s = 1; c1l = 8; c2s = 15; c2l = 6;
3725                            break;
3726                        case INTERSECT_CUBIC_QUAD_3:
3727                            f.push(9, 10, 0, 17);
3728                            f.push(12, 13, 11, 24);
3729                            f.push(15, 16, 14, 25);
3730                            c1s = 1; c1l = 8; c2s = 18; c2l = 6;
3731                            break;
3732                        case INTERSECT_CUBIC_QUAD_4:
3733                            f.push(9, 10, 0, 20);
3734                            f.push(12, 13, 11, 27);
3735                            f.push(15, 16, 14, 28);
3736                            f.push(18, 19, 17, 29);
3737                            c1s = 1; c1l = 8; c2s = 21; c2l = 6;
3738                            break;
3739                        case INTERSECT_CUBIC_LINE_NO:
3740                            c1s = 0; c1l = 8; c2s = 8; c2l = 4;
3741                            break;
3742                        case INTERSECT_CUBIC:
3743                            f.push(9, 10, 0, 11);
3744                            c1s = 1; c1l = 8; c2s = 12; c2l = 8;
3745                            break;
3746                        case INTERSECT_CUBIC_2:
3747                            f.push(9, 10, 0, 14);
3748                            f.push(12, 13, 11, 23);
3749                            c1s = 1; c1l = 8; c2s = 15; c2l = 8;
3750                            break;
3751                        case INTERSECT_CUBIC_3:
3752                            f.push(9, 10, 0, 17);
3753                            f.push(12, 13, 11, 26);
3754                            f.push(15, 16, 14, 27);
3755                            c1s = 1; c1l = 8; c2s = 18; c2l = 8;
3756                            break;
3757                        case INTERSECT_CUBIC_4:
3758                            f.push(9, 10, 0, 20);
3759                            f.push(12, 13, 11, 29);
3760                            f.push(15, 16, 14, 30);
3761                            f.push(18, 19, 17, 31);
3762                            c1s = 1; c1l = 8; c2s = 21; c2l = 8;
3763                            break;
3764                        case INTERSECT_CUBIC_NO:
3765                            c1s = 0; c1l = 8; c2s = 8; c2l = 8;
3766                            break;
3767                        default:
3768                            console.log("unknown REC_TYPE_SECT frag type: " + fragType);
3769                            throw "stop execution";
3770                    }
3771                    if (draw_intersection != 1) {
3772                        var id = -1;
3773                        var curve;
3774                        switch (c1l) {
3775                            case 4:
3776                                drawLine(frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3]);
3777                                if (draw_id) {
3778                                    curve = [frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3]];
3779                                    id = idByCurve(test, curve, PATH_LINE);
3780                                }
3781                                break;
3782                            case 6:
3783                                drawQuad(frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3],
3784                                        frags[c1s + 4], frags[c1s + 5]);
3785                                if (draw_id) {
3786                                    curve = [frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3],
3787                                            frags[c1s + 4], frags[c1s + 5]];
3788                                    id = idByCurve(test, curve, PATH_QUAD);
3789                                }
3790                                break;
3791                            case 7:
3792                                drawConicWithQuads(frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3],
3793                                        frags[c1s + 4], frags[c1s + 5], frags[c1s + 6]);
3794                                if (draw_id) {
3795                                    curve = [frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3],
3796                                            frags[c1s + 4], frags[c1s + 5], frags[c1s + 6]];
3797                                    id = idByCurve(test, curve, PATH_CONIC);
3798                                }
3799                                break;
3800                            case 8:
3801                                drawCubic(frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3],
3802                                        frags[c1s + 4], frags[c1s + 5], frags[c1s + 6], frags[c1s + 7]);
3803                                if (draw_id) {
3804                                    curve = [frags[c1s], frags[c1s + 1], frags[c1s + 2], frags[c1s + 3],
3805                                            frags[c1s + 4], frags[c1s + 5], frags[c1s + 6], frags[c1s + 7]];
3806                                    id = idByCurve(test, curve, PATH_CUBIC);
3807                                }
3808                                break;
3809                        }
3810                        if (id >= 0) {
3811                            drawVisibleID(curve, 0.5, id);
3812                        }
3813                        id = -1;
3814                        switch (c2l) {
3815                            case 0:
3816                                break;
3817                            case 4:
3818                                drawLine(frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3]);
3819                                if (draw_id) {
3820                                    curve = [frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3]];
3821                                    id = idByCurve(test, curve, PATH_LINE);
3822                                }
3823                                break;
3824                            case 6:
3825                                drawQuad(frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3],
3826                                        frags[c2s + 4], frags[c2s + 5]);
3827                                if (draw_id) {
3828                                    curve = [frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3],
3829                                            frags[c2s + 4], frags[c2s + 5]];
3830                                    id = idByCurve(test, curve, PATH_QUAD);
3831                                }
3832                                break;
3833                            case 7:
3834                                drawConicWithQuads(frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3],
3835                                        frags[c2s + 4], frags[c2s + 5], frags[c2s + 6]);
3836                                if (draw_id) {
3837                                    curve = [frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3],
3838                                            frags[c2s + 4], frags[c2s + 5], frags[c2s + 6]];
3839                                    id = idByCurve(test, curve, PATH_CONIC);
3840                                }
3841                                break;
3842                            case 8:
3843                                drawCubic(frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3],
3844                                        frags[c2s + 4], frags[c2s + 5], frags[c2s + 6], frags[c2s + 7]);
3845                                if (draw_id) {
3846                                    curve = [frags[c2s], frags[c2s + 1], frags[c2s + 2], frags[c2s + 3],
3847                                            frags[c2s + 4], frags[c2s + 5], frags[c2s + 6], frags[c2s + 7]];
3848                                    id = idByCurve(test, curve, PATH_CUBIC);
3849                                }
3850                                break;
3851                        }
3852                        if (id >= 0) {
3853                            drawVisibleID(curve, 0.5, id);
3854                        }
3855                    }
3856                    if (collect_bounds) {
3857                        break;
3858                    }
3859                    if (draw_intersection != 3 || step_limit == 0 || tIndex >= lastSect) {
3860                        for (var idx = 0; idx < f.length; idx += 4) {
3861                            drawPoint(frags[f[idx]], frags[f[idx + 1]], true);
3862                        }
3863                    }
3864                    if (!draw_intersectT) {
3865                        break;
3866                    }
3867                    ctx.fillStyle = "red";
3868                    if (draw_intersection != 3 || step_limit == 0 || tIndex >= lastSect) {
3869                        for (var idx = 0; idx < f.length; idx += 4) {
3870                            drawTAtPointUp(frags[f[idx]], frags[f[idx + 1]], frags[f[idx + 2]]);
3871                            drawTAtPointDown(frags[f[idx]], frags[f[idx + 1]], frags[f[idx + 3]]);
3872                        }
3873                    }
3874                    break;
3875                case REC_TYPE_SORT:
3876                    if (!draw_sort || (step_limit > 0 && tIndex < lastSort)) {
3877                        continue;
3878                    }
3879                    ctx.lineWidth = 3;
3880                    ctx.strokeStyle = "rgba(127,127,0, 0.5)";
3881                    focus_enabled = true;
3882                    switch (fragType) {
3883                        case SORT_UNARY:
3884                        case SORT_BINARY:
3885                            var curve = curvePartialByID(test, frags[0], frags[6], frags[8]);
3886                            drawCurve(curve);
3887                            break;
3888                        default:
3889                            console.log("unknown REC_TYPE_SORT frag type: " + fragType);
3890                            throw "stop execution";
3891                    }
3892                    break;
3893                case REC_TYPE_TOP:
3894                    if (!draw_top || (step_limit > 0 && tIndex < lastTop)) {
3895                        continue;
3896                    }
3897                    ctx.lineWidth = 3;
3898                    ctx.strokeStyle = "rgba(127,127,0, 0.5)";
3899                    focus_enabled = true;
3900                    {
3901                        var curve = curvePartialByID(test, frags[0], frags[1], frags[2]);
3902                        drawCurve(curve);
3903                        var type = PATH_LINE + (curve.length / 2 - 2);
3904                        var mid = pointAtT(curve, type, 0.5);
3905                        var d = dxy_at_t(curve, type, 0.5);
3906                        drawArrow(mid.x, mid.y, d.x, d.y, 0.3);
3907                    }
3908                    break;
3909                case REC_TYPE_MARK:
3910                    if (!draw_mark || (step_limit > 0 && tIndex < lastMark)) {
3911                        continue;
3912                    }
3913                    ctx.lineWidth = 3;
3914                    ctx.strokeStyle = fragType >= MARK_DONE_LINE ?
3915                            "rgba(127,0,127, 0.5)" : "rgba(127,127,0, 0.5)";
3916                    focus_enabled = true;
3917                    switch (fragType) {
3918                        case MARK_LINE:
3919                        case MARK_DONE_LINE:
3920                        case MARK_UNSORTABLE_LINE:
3921                        case MARK_SIMPLE_LINE:
3922                        case MARK_SIMPLE_DONE_LINE:
3923                        case MARK_DONE_UNARY_LINE:
3924                            drawLinePartial(frags[1], frags[2], frags[3], frags[4],
3925                                frags[5], frags[9]);
3926                            if (draw_id) {
3927                                drawLinePartialID(frags[0], frags[1], frags[2], frags[3], frags[4],
3928                                frags[5], frags[9]);
3929                            }
3930                            break;
3931                        case MARK_QUAD:
3932                        case MARK_DONE_QUAD:
3933                        case MARK_UNSORTABLE_QUAD:
3934                        case MARK_SIMPLE_QUAD:
3935                        case MARK_SIMPLE_DONE_QUAD:
3936                        case MARK_DONE_UNARY_QUAD:
3937                            drawQuadPartial(frags[1], frags[2], frags[3], frags[4],
3938                                frags[5], frags[6], frags[7], frags[11]);
3939                            if (draw_id) {
3940                                drawQuadPartialID(frags[0], frags[1], frags[2], frags[3], frags[4],
3941                                frags[5], frags[6], frags[7], frags[11]);
3942                            }
3943                            break;
3944                        case MARK_CUBIC:
3945                        case MARK_DONE_CUBIC:
3946                        case MARK_UNSORTABLE_CUBIC:
3947                        case MARK_SIMPLE_CUBIC:
3948                        case MARK_SIMPLE_DONE_CUBIC:
3949                        case MARK_DONE_UNARY_CUBIC:
3950                            drawCubicPartial(frags[1], frags[2], frags[3], frags[4],
3951                                frags[5], frags[6], frags[7], frags[8], frags[9], frags[13]);
3952                            if (draw_id) {
3953                                drawCubicPartialID(frags[0], frags[1], frags[2], frags[3], frags[4],
3954                                frags[5], frags[6], frags[7], frags[8], frags[9], frags[13]);
3955                            }
3956                            break;
3957                        case MARK_ANGLE_LAST:
3958                            // FIXME: ignored for now
3959                            break;
3960                        default:
3961                            console.log("unknown REC_TYPE_MARK frag type: " + fragType);
3962                            throw "stop execution";
3963                    }
3964                    break;
3965                default:
3966                    continue;
3967            }
3968        }
3969        switch (recType) {
3970            case REC_TYPE_SORT:
3971                if (!draw_sort || (step_limit > 0 && tIndex < lastSort)) {
3972                    break;
3973                }
3974                var angles = []; // use tangent lines to describe arcs
3975                var windFrom = [];
3976                var windTo = [];
3977                var opp = [];
3978                var minXY = Number.MAX_VALUE;
3979                var partial;
3980                focus_enabled = true;
3981                var someUnsortable = false;
3982                for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
3983                    var fragType = records[recordIndex];
3984                    var frags = records[recordIndex + 1];
3985                    var unsortable = (fragType == SORT_UNARY && frags[14]) ||
3986                            (fragType == SORT_BINARY && frags[16]);
3987                    someUnsortable |= unsortable;
3988                    switch (fragType) {
3989                        case SORT_UNARY:
3990                        case SORT_BINARY:
3991                            partial = curvePartialByID(test, frags[0], frags[6], frags[8]);
3992                            break;
3993                        default:
3994                            console.log("unknown REC_TYPE_SORT frag type: " + fragType);
3995                            throw "stop execution";
3996                    }
3997                    var dx = boundsWidth(partial);
3998                    var dy = boundsHeight(partial);
3999                    minXY = Math.min(minXY, dx * dx + dy * dy);
4000                    if (collect_bounds) {
4001                        continue;
4002                    }
4003                    angles.push(tangent(partial));
4004                    var from = frags[12];
4005                    var to = frags[12];
4006                    var sgn = frags[10];
4007                    if (sgn < 0) {
4008                        from -= frags[11];
4009                    } else if (sgn > 0) {
4010                        to -= frags[11];
4011                    }
4012                    windFrom.push(from + (unsortable ? "!" : ""));
4013                    windTo.push(to + (unsortable ? "!" : ""));
4014                    opp.push(fragType == SORT_BINARY);
4015                    if (draw_sort == 1) {
4016                        drawVisibleOrder(partial, frags[12]);
4017                    } else {
4018                        drawVisibleOrder(partial, (recordIndex / 2) + 1);
4019                    }
4020                }
4021                var radius = Math.sqrt(minXY) / 2 * scale;
4022                radius = Math.min(50, radius);
4023                var scaledRadius = radius / scale;
4024                var centerX = partial[0];
4025                var centerY = partial[1];
4026                if (collect_bounds) {
4027                    if (focus_enabled) {
4028                        focusXmin = Math.min(focusXmin, centerX - scaledRadius);
4029                        focusYmin = Math.min(focusYmin, centerY - scaledRadius);
4030                        focusXmax = Math.max(focusXmax, centerX + scaledRadius);
4031                        focusYmax = Math.max(focusYmax, centerY + scaledRadius);
4032                    }
4033                    break;
4034                }
4035                break;
4036            default:
4037                break;
4038        }
4039    }
4040    if (collect_bounds) {
4041        return;
4042    }
4043    if (draw_log && logStart >= 0) {
4044        ctx.font = "normal 10px Arial";
4045        ctx.textAlign = "left";
4046        ctx.beginPath();
4047        var top = screenHeight - 20 - (logRange + 2) * 10;
4048        ctx.rect(50, top, screenWidth - 100, (logRange + 2) * 10);
4049        ctx.fillStyle = "white";
4050        ctx.fill();
4051        ctx.fillStyle = "rgba(0,0,0, 0.5)";
4052        if (logStart > 0) {
4053            ctx.fillText(lines[logStart - 1], 50, top + 8);
4054        }
4055        ctx.fillStyle = "black";
4056        for (var idx = 0; idx < logRange; ++idx) {
4057            ctx.fillText(lines[logStart + idx], 50, top + 18 + 10 * idx);
4058        }
4059        ctx.fillStyle = "rgba(0,0,0, 0.5)";
4060        if (logStart + logRange < lines.length) {
4061            ctx.fillText(lines[logStart + logRange], 50, top + 18 + 10 * logRange);
4062        }
4063    }
4064    if (draw_legend) {
4065        var pos = 0;
4066        var drawSomething = draw_add | draw_active | draw_angle | draw_coincidence | draw_sort | draw_mark;
4067   //     drawBox(pos++, "yellow", "black", opLetter, true, '');
4068        drawBox(pos++, "rgba(0,0,255, 0.3)", "black", draw_intersection > 1 ? sectCount : sectMax2, draw_intersection, intersectionKey);
4069        drawBox(pos++, "rgba(0,0,255, 0.3)", "black", draw_add ? addCount : addMax, draw_add, addKey);
4070        drawBox(pos++, "rgba(0,0,255, 0.3)", "black", draw_active ? activeCount : activeMax, draw_active, activeKey);
4071        drawBox(pos++, "rgba(127,127,0, 0.3)", "black", draw_angle ? angleCount : angleMax, draw_angle, angleKey);
4072        drawBox(pos++, "rgba(127,127,0, 0.3)", "black", draw_coincidence ? coinCount : coinMax, draw_coincidence, coincidenceKey);
4073        drawBox(pos++, "rgba(127,127,0, 0.3)", "black", draw_op ? opCount : opMax, draw_op, opKey);
4074        drawBox(pos++, "rgba(127,127,0, 0.3)", "black", draw_sort ? sortCount : sortMax, draw_sort, sortKey);
4075        drawBox(pos++, "rgba(127,127,0, 0.3)", "black", draw_top ? topCount : topMax, draw_top, topKey);
4076        drawBox(pos++, "rgba(127,0,127, 0.3)", "black", draw_mark ? markCount : markMax, draw_mark, markKey);
4077        drawBox(pos++, "black", "white",
4078                (new Array('P', 'P1', 'P2', 'P', 'p', 'p1', 'p2'))[draw_path], draw_path != 0, pathKey);
4079        drawBox(pos++, "rgba(0,63,0, 0.7)", "white",
4080                (new Array('Q', 'Q', 'C', 'QC', 'Qc', 'Cq'))[draw_computed],
4081                draw_computed != 0, computedKey);
4082        drawBox(pos++, "green", "black", step_limit, drawSomething, '');
4083        drawBox(pos++, "green", "black", stepMax, drawSomething, '');
4084        drawBox(pos++, "rgba(255,0,0, 0.6)", "black", lastIndex, drawSomething & draw_log, '');
4085        drawBox(pos++, "rgba(255,0,0, 0.6)", "black", test.length - 1, drawSomething & draw_log, '');
4086        if (curve_t) {
4087            drawCurveTControl();
4088        }
4089        ctx.font = "normal 20px Arial";
4090        ctx.fillStyle = "rgba(0,0,0, 0.3)";
4091        ctx.textAlign = "right";
4092        ctx.fillText(scale.toFixed(decimal_places) + 'x' , screenWidth - 10, screenHeight - 5);
4093    }
4094    if (draw_hints) {
4095        ctx.font = "normal 10px Arial";
4096        ctx.fillStyle = "rgba(0,0,0, 0.5)";
4097        ctx.textAlign = "right";
4098        var y = 4;
4099        ctx.fillText("control lines : " +  controlLinesKey, ctx.screenWidthwidth - 10, pos * 50 + y++ * 10);
4100        ctx.fillText("curve t : " +  curveTKey, screenWidth - 10, pos * 50 + y++ * 10);
4101        ctx.fillText("deriviatives : " +  deriviativesKey, screenWidth - 10, pos * 50 + y++ * 10);
4102        ctx.fillText("intersect t : " +  intersectTKey, screenWidth - 10, pos * 50 + y++ * 10);
4103        ctx.fillText("log : " +  logKey, screenWidth - 10, pos * 50 + y++ * 10);
4104        ctx.fillText("log curve : " +  logCurvesKey, screenWidth - 10, pos * 50 + y++ * 10);
4105        ctx.fillText("mid point : " +  midpointKey, screenWidth - 10, pos * 50 + y++ * 10);
4106        ctx.fillText("points : " +  ptsKey, screenWidth - 10, pos * 50 + y++ * 10);
4107        ctx.fillText("sequence : " +  sequenceKey, screenWidth - 10, pos * 50 + y++ * 10);
4108        ctx.fillText("xy : " +  xyKey, screenWidth - 10, pos * 50 + y++ * 10);
4109    }
4110}
4111
4112function drawBox(y, backC, foreC, str, enable, label) {
4113    ctx.beginPath();
4114    ctx.fillStyle = backC;
4115    ctx.rect(screenWidth - 40, y * 50 + 10, 40, 30);
4116    ctx.fill();
4117    ctx.font = "normal 16px Arial";
4118    ctx.fillStyle = foreC;
4119    ctx.textAlign = "center";
4120    ctx.fillText(str, screenWidth - 20, y * 50 + 32);
4121    if (!enable) {
4122        ctx.fillStyle = "rgba(255,255,255, 0.5)";
4123        ctx.fill();
4124    }
4125    if (label != '') {
4126        ctx.font = "normal 9px Arial";
4127        ctx.fillStyle = "black";
4128        ctx.fillText(label, screenWidth - 47, y * 50 + 40);
4129    }
4130}
4131
4132function drawCurveTControl() {
4133    ctx.lineWidth = 2;
4134    ctx.strokeStyle = "rgba(0,0,0, 0.3)";
4135    ctx.beginPath();
4136    ctx.rect(screenWidth - 80, 40, 28, screenHeight - 80);
4137    ctx.stroke();
4138    var ty = 40 + curveT * (screenHeight - 80);
4139    ctx.beginPath();
4140    ctx.moveTo(screenWidth - 80, ty);
4141    ctx.lineTo(screenWidth - 85, ty - 5);
4142    ctx.lineTo(screenWidth - 85, ty + 5);
4143    ctx.lineTo(screenWidth - 80, ty);
4144    ctx.fillStyle = "rgba(0,0,0, 0.6)";
4145    ctx.fill();
4146    var num = curveT.toFixed(decimal_places);
4147    ctx.font = "normal 10px Arial";
4148    ctx.textAlign = "left";
4149    ctx.fillText(num, screenWidth - 78, ty);
4150}
4151
4152function ptInTControl() {
4153    var e = window.event;
4154    var tgt = e.target || e.srcElement;
4155    var left = tgt.offsetLeft;
4156    var top = tgt.offsetTop;
4157    var x = (e.clientX - left);
4158    var y = (e.clientY - top);
4159    if (x < screenWidth - 80 || x > screenWidth - 50) {
4160        return false;
4161    }
4162    if (y < 40 || y > screenHeight - 80) {
4163        return false;
4164    }
4165    curveT = (y - 40) / (screenHeight - 120);
4166    if (curveT < 0 || curveT > 1) {
4167        throw "stop execution";
4168    }
4169    return true;
4170}
4171
4172function drawTop() {
4173    if (tests[testIndex] == null) {
4174        var str = testDivs[testIndex].textContent;
4175        parse_all(str);
4176        var title = testDivs[testIndex].id.toString();
4177        testTitles[testIndex] = title;
4178    }
4179    init(tests[testIndex]);
4180    redraw();
4181}
4182
4183function redraw() {
4184    if (focus_on_selection) {
4185        collect_bounds = true;
4186        draw(tests[testIndex], testLines[testIndex], testTitles[testIndex]);
4187        collect_bounds = false;
4188        if (focusXmin < focusXmax && focusYmin < focusYmax) {
4189            setScale(focusXmin, focusXmax, focusYmin, focusYmax);
4190        }
4191    }
4192    ctx.beginPath();
4193    ctx.fillStyle = "white";
4194    ctx.rect(0, 0, screenWidth, screenHeight);
4195    ctx.fill();
4196    draw(tests[testIndex], testLines[testIndex], testTitles[testIndex]);
4197}
4198
4199function dumpCurvePartial(test, id, t0, t1) {
4200    var curve = curveByID(test, id);
4201    var name = ["line", "quad", "cubic"][curve.length / 2 - 2];
4202    console.log("id=" + id + " " + name + "=" +  curveToString(curve)
4203        + " t0=" + t0 + " t1=" + t1
4204        + " partial=" + curveToString(curvePartialByID(test, id, t0, t1)));
4205}
4206
4207function dumpAngleTest(test, id, t0, t1) {
4208    var curve = curveByID(test, id);
4209    console.log("    { {" + curveToString(curve) + "}, "
4210            + curve.length / 2 + ", " + t0 + ", " + t1 + ", {} }, //");
4211}
4212
4213function dumpLogToConsole() {
4214    if (logStart < 0) {
4215        return;
4216    }
4217    var test = tests[testIndex];
4218    var recType = REC_TYPE_UNKNOWN;
4219    var records;
4220    for (var index = 0; index < test.length; index += 3) {
4221        var lastLineNo = test[index + 1];
4222        if (lastLineNo >= logStart && lastLineNo < logStart + logRange) {
4223            recType = test[index];
4224            records = test[index + 2];
4225            break;
4226        }
4227    }
4228    if (recType == REC_TYPE_UNKNOWN) {
4229        return;
4230    }
4231    var lines = testLines[testIndex];
4232    for (var idx = 0; idx < logRange; ++idx) {
4233        var line = lines[logStart + idx];
4234        console.log(line);
4235        for (var recordIndex = 0; recordIndex < records.length; recordIndex += 2) {
4236            var fragType = records[recordIndex];
4237            var frags = records[recordIndex + 1];
4238            if (recType == REC_TYPE_ANGLE && fragType == ANGLE_AFTER) {
4239                dumpCurvePartial(test, frags[0], frags[4], frags[5]);
4240                dumpCurvePartial(test, frags[6], frags[10], frags[11]);
4241                dumpCurvePartial(test, frags[12], frags[16], frags[17]);
4242                console.log("\nstatic IntersectData intersectDataSet[] = { //");
4243                dumpAngleTest(test, frags[0], frags[4], frags[5]);
4244                dumpAngleTest(test, frags[6], frags[10], frags[11]);
4245                dumpAngleTest(test, frags[12], frags[16], frags[17]);
4246                console.log("}; //");
4247            }
4248        }
4249    }
4250}
4251
4252var activeKey = 'a';
4253var pathKey = 'b';
4254var pathBackKey = 'B';
4255var centerKey = 'c';
4256var coincidenceKey = 'C';
4257var addKey = 'd';
4258var deriviativesKey = 'f';
4259var angleKey = 'g';
4260var angleBackKey = 'G';
4261var intersectionKey = 'i';
4262var intersectionBackKey = 'I';
4263var sequenceKey = 'j';
4264var midpointKey = 'k';
4265var logKey = 'l';
4266var logToConsoleKey = 'L';
4267var markKey = 'm';
4268var sortKey = 'o';
4269var opKey = 'p';
4270var opBackKey = 'P';
4271var computedKey = 'q';
4272var computedBackKey = 'Q';
4273var directionKey = 'r';
4274var stepKey = 's';
4275var stepBackKey = 'S';
4276var intersectTKey = 't';
4277var topKey = 'T';
4278var curveTKey = 'u';
4279var controlLinesBackKey = 'V';
4280var controlLinesKey = 'v';
4281var ptsKey = 'x';
4282var xyKey = 'y';
4283var logCurvesKey = 'z';
4284var focusKey = '`';
4285var idKey = '.';
4286var retinaKey = '\\';
4287
4288function doKeyPress(evt) {
4289    var char = String.fromCharCode(evt.charCode);
4290    var focusWasOn = false;
4291    switch (char) {
4292    case '0':
4293    case '1':
4294    case '2':
4295    case '3':
4296    case '4':
4297    case '5':
4298    case '6':
4299    case '7':
4300    case '8':
4301    case '9':
4302        decimal_places = char - '0';
4303        redraw();
4304        break;
4305    case activeKey:
4306        draw_active ^= true;
4307        redraw();
4308        break;
4309    case addKey:
4310        draw_add ^= true;
4311        redraw();
4312        break;
4313    case angleKey:
4314        draw_angle = (draw_angle + 1) % 4;
4315        redraw();
4316        break;
4317    case angleBackKey:
4318        draw_angle = (draw_angle + 2) % 3;
4319        redraw();
4320        break;
4321    case centerKey:
4322        setScale(xmin, xmax, ymin, ymax);
4323        redraw();
4324        break;
4325    case coincidenceKey:
4326        draw_coincidence ^= true;
4327        redraw();
4328        break;
4329    case controlLinesBackKey:
4330        control_lines = (control_lines + 3) % 4;
4331        redraw();
4332        break;
4333    case controlLinesKey:
4334        control_lines = (control_lines + 1) % 4;
4335        redraw();
4336        break;
4337    case computedBackKey:
4338        draw_computed = (draw_computed + 5) % 6;
4339        redraw();
4340        break;
4341    case computedKey:
4342        draw_computed = (draw_computed + 1) % 6;
4343        redraw();
4344        break;
4345    case curveTKey:
4346        curve_t ^= true;
4347        if (curve_t) {
4348            draw_legend = true;
4349        }
4350        redraw();
4351        break;
4352    case deriviativesKey:
4353        draw_deriviatives = (draw_deriviatives + 1) % 3;
4354        redraw();
4355        break;
4356    case directionKey:
4357        draw_direction ^= true;
4358        redraw();
4359        break;
4360    case focusKey:
4361        focus_on_selection ^= true;
4362        setScale(xmin, xmax, ymin, ymax);
4363        redraw();
4364        break;
4365    case idKey:
4366        draw_id ^= true;
4367        redraw();
4368        break;
4369    case intersectionBackKey:
4370        draw_intersection = (draw_intersection + 3) % 4;
4371        redraw();
4372        break;
4373    case intersectionKey:
4374        draw_intersection = (draw_intersection + 1) % 4;
4375        redraw();
4376        break;
4377    case intersectTKey:
4378        draw_intersectT ^= true;
4379        redraw();
4380        break;
4381    case logCurvesKey:
4382        logCurves(tests[testIndex]);
4383        break;
4384    case logKey:
4385        draw_log ^= true;
4386        redraw();
4387        break;
4388    case logToConsoleKey:
4389        if (draw_log) {
4390            dumpLogToConsole();
4391        }
4392        break;
4393    case markKey:
4394        draw_mark ^= true;
4395        redraw();
4396        break;
4397    case midpointKey:
4398        draw_midpoint ^= true;
4399        redraw();
4400        break;
4401    case opKey:
4402        draw_op = (draw_op + 1) % 3;
4403        redraw();
4404        break;
4405    case opBackKey:
4406        draw_op = (draw_op + 2) % 3;
4407        redraw();
4408        break;
4409    case pathKey:
4410        draw_path = (draw_path + 1) % (4 + (hasAlignedPath ? 3 : 0));
4411        redraw();
4412        break;
4413    case pathBackKey:
4414        draw_path = (draw_path + 3 + (hasAlignedPath ? 3 : 0)) % (4 + (hasAlignedPath ? 3 : 0));
4415        redraw();
4416        break;
4417    case ptsKey:
4418        pt_labels = (pt_labels + 1) % 3;
4419        redraw();
4420        break;
4421    case retinaKey:
4422        retina_scale ^= true;
4423        drawTop();
4424        break;
4425    case sequenceKey:
4426        draw_sequence ^= true;
4427        redraw();
4428        break;
4429    case sortKey:
4430        draw_sort = (draw_sort + 1) % 3;
4431        drawTop();
4432        break;
4433    case stepKey:
4434        step_limit++;
4435        if (step_limit > stepMax) {
4436            step_limit = stepMax;
4437        }
4438        redraw();
4439        break;
4440    case stepBackKey:
4441        step_limit--;
4442        if (step_limit < 0) {
4443            step_limit = 0;
4444        }
4445        redraw();
4446        break;
4447    case topKey:
4448        draw_top ^= true;
4449        redraw();
4450        break;
4451    case xyKey:
4452        debug_xy = (debug_xy + 1) % 3;
4453        redraw();
4454        break;
4455    case '-':
4456        focusWasOn = focus_on_selection;
4457        if (focusWasOn) {
4458            focus_on_selection = false;
4459            scale /= 1.2;
4460        } else {
4461            scale /= 2;
4462            calcLeftTop();
4463        }
4464        redraw();
4465        focus_on_selection = focusWasOn;
4466        break;
4467    case '=':
4468    case '+':
4469        focusWasOn = focus_on_selection;
4470        if (focusWasOn) {
4471            focus_on_selection = false;
4472            scale *= 1.2;
4473        } else {
4474            scale *= 2;
4475            calcLeftTop();
4476        }
4477        redraw();
4478        focus_on_selection = focusWasOn;
4479        break;
4480    case '?':
4481        draw_hints ^= true;
4482        if (draw_hints && !draw_legend) {
4483            draw_legend = true;
4484        }
4485        redraw();
4486        break;
4487    case '/':
4488        draw_legend ^= true;
4489        redraw();
4490        break;
4491    }
4492}
4493
4494function doKeyDown(evt) {
4495    var char = evt.keyCode;
4496    var preventDefault = false;
4497    switch (char) {
4498    case 37: // left arrow
4499        if (evt.shiftKey) {
4500            testIndex -= 9;
4501        }
4502        if (--testIndex < 0)
4503            testIndex = tests.length - 1;
4504        drawTop();
4505        preventDefault = true;
4506        break;
4507    case 39: // right arrow
4508        if (evt.shiftKey) {
4509            testIndex += 9;
4510        }
4511        if (++testIndex >= tests.length)
4512            testIndex = 0;
4513        drawTop();
4514        preventDefault = true;
4515        break;
4516    }
4517    if (preventDefault) {
4518          evt.preventDefault();
4519          return false;
4520    }
4521    return true;
4522}
4523
4524(function() {
4525    var hidden = "hidden";
4526
4527    // Standards:
4528    if (hidden in document)
4529        document.addEventListener("visibilitychange", onchange);
4530    else if ((hidden = "mozHidden") in document)
4531        document.addEventListener("mozvisibilitychange", onchange);
4532    else if ((hidden = "webkitHidden") in document)
4533        document.addEventListener("webkitvisibilitychange", onchange);
4534    else if ((hidden = "msHidden") in document)
4535        document.addEventListener("msvisibilitychange", onchange);
4536    // IE 9 and lower:
4537    else if ('onfocusin' in document)
4538        document.onfocusin = document.onfocusout = onchange;
4539    // All others:
4540    else
4541        window.onpageshow = window.onpagehide
4542            = window.onfocus = window.onblur = onchange;
4543
4544    function onchange (evt) {
4545        var v = 'visible', h = 'hidden',
4546            evtMap = {
4547                focus:v, focusin:v, pageshow:v, blur:h, focusout:h, pagehide:h
4548            };
4549
4550        evt = evt || window.event;
4551        if (evt.type in evtMap)
4552            document.body.className = evtMap[evt.type];
4553        else
4554            document.body.className = this[hidden] ? "hidden" : "visible";
4555    }
4556})();
4557
4558function calcXY() {
4559    var e = window.event;
4560    var tgt = e.target || e.srcElement;
4561    var left = tgt.offsetLeft;
4562    var top = tgt.offsetTop;
4563    mouseX = (e.clientX - left) / scale + srcLeft;
4564    mouseY = (e.clientY - top) / scale + srcTop;
4565}
4566
4567function calcLeftTop() {
4568    srcLeft = mouseX - screenWidth / 2 / scale;
4569    srcTop = mouseY - screenHeight / 2 / scale;
4570}
4571
4572var disableClick = false;
4573
4574function handleMouseClick() {
4575    if (disableClick) {
4576        return;
4577    }
4578    if (!curve_t || !ptInTControl()) {
4579        calcXY();
4580        calcLeftTop();
4581    }
4582    redraw();
4583//    if (!curve_t || !ptInTControl()) {
4584//        mouseX = screenWidth / 2 / scale + srcLeft;
4585//        mouseY = screenHeight / 2 / scale + srcTop;
4586//    }
4587}
4588
4589function handleMouseOver() {
4590    calcXY();
4591    if (debug_xy != 2) {
4592        return;
4593    }
4594    var num = mouseX.toFixed(decimal_places) + ", " + mouseY.toFixed(decimal_places);
4595    ctx.beginPath();
4596    ctx.rect(300,100,num.length * 6,10);
4597    ctx.fillStyle="white";
4598    ctx.fill();
4599    ctx.font = "normal 10px Arial";
4600    ctx.fillStyle="black";
4601    ctx.textAlign = "left";
4602    ctx.fillText(num, 300, 108);
4603}
4604
4605function start() {
4606    for (var i = 0; i < testDivs.length; ++i) {
4607        tests[i] = null;
4608    }
4609    testIndex = 0;
4610    drawTop();
4611    window.addEventListener('keypress', doKeyPress, true);
4612    window.addEventListener('keydown', doKeyDown, true);
4613    window.onresize = function() {
4614        drawTop();
4615    }
4616    /*
4617    window.onpagehide = function() {
4618        disableClick = true;
4619    }
4620    */
4621    window.onpageshow = function () {
4622        disableClick = false;
4623    }
4624}
4625
4626</script>
4627</head>
4628
4629<body onLoad="start();">
4630<canvas id="canvas" width="750" height="500"
4631    onmousemove="handleMouseOver()"
4632    onclick="handleMouseClick()"
4633    ></canvas >
4634</body>
4635</html>
4636