1 
2 /*
3  * Copyright 2006 The Android Open Source Project
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 
9 
10 #ifndef SkStrokerPriv_DEFINED
11 #define SkStrokerPriv_DEFINED
12 
13 #include "SkStroke.h"
14 
15 #define CWX(x, y)   (-y)
16 #define CWY(x, y)   (x)
17 #define CCWX(x, y)  (y)
18 #define CCWY(x, y)  (-x)
19 
20 #define CUBIC_ARC_FACTOR    ((SK_ScalarSqrt2 - SK_Scalar1) * 4 / 3)
21 
22 class SkStrokerPriv {
23 public:
24     typedef void (*CapProc)(SkPath* path,
25                             const SkPoint& pivot,
26                             const SkVector& normal,
27                             const SkPoint& stop,
28                             SkPath* otherPath);
29 
30     typedef void (*JoinProc)(SkPath* outer, SkPath* inner,
31                              const SkVector& beforeUnitNormal,
32                              const SkPoint& pivot,
33                              const SkVector& afterUnitNormal,
34                              SkScalar radius, SkScalar invMiterLimit,
35                              bool prevIsLine, bool currIsLine);
36 
37     static CapProc  CapFactory(SkPaint::Cap);
38     static JoinProc JoinFactory(SkPaint::Join);
39 };
40 
41 #endif
42