1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef bts_FLT16VEC3D_EM_H
18 #define bts_FLT16VEC3D_EM_H
19 
20 /* ---- includes ----------------------------------------------------------- */
21 
22 #include "b_BasicEm/Context.h"
23 #include "b_BasicEm/Basic.h"
24 #include "b_BasicEm/Phase.h"
25 
26 /* ---- related objects  --------------------------------------------------- */
27 
28 /* ---- typedefs ----------------------------------------------------------- */
29 
30 /* ---- constants ---------------------------------------------------------- */
31 
32 /* ---- object definition -------------------------------------------------- */
33 
34 /** 3d vector with floating point */
35 struct bts_Flt16Vec3D
36 {
37 
38 	/* ---- private data --------------------------------------------------- */
39 
40 	/* ---- public data ---------------------------------------------------- */
41 
42 	/** x component */
43 	int16 xE;
44 
45 	/** y component */
46 	int16 yE;
47 
48 	/** z component */
49 	int16 zE;
50 
51 	/** point position */
52 	int16 bbpE;
53 };
54 
55 /* ---- associated objects ------------------------------------------------- */
56 
57 /* ---- external functions ------------------------------------------------- */
58 
59 /* ---- \ghd{ constructor/destructor } ------------------------------------- */
60 
61 /** initializes vector */
62 void bts_Flt16Vec3D_init( struct bts_Flt16Vec3D* ptrA );
63 
64 /** destroys vector */
65 void bts_Flt16Vec3D_exit( struct bts_Flt16Vec3D* ptrA );
66 
67 /* ---- \ghd{ operators } -------------------------------------------------- */
68 
69 /** equal operator */
70 flag bts_Flt16Vec3D_equal( const struct bts_Flt16Vec3D* ptrA, const struct bts_Flt16Vec3D* srcPtrA );
71 
72 /* ---- \ghd{ query functions } -------------------------------------------- */
73 
74 /* ---- \ghd{ modify functions } ------------------------------------------- */
75 
76 /* ---- \ghd{ memory I/O } ------------------------------------------------- */
77 
78 /** size object needs when written to memory */
79 uint32 bts_Flt16Vec3D_memSize( struct bbs_Context* cpA,
80 							   const struct bts_Flt16Vec3D* ptrA );
81 
82 /** writes object to memory; returns number of bytes written */
83 uint32 bts_Flt16Vec3D_memWrite( struct bbs_Context* cpA,
84 							    const struct bts_Flt16Vec3D* ptrA,
85 								uint16* memPtrA );
86 
87 /** reads object from memory; returns number of bytes read */
88 uint32 bts_Flt16Vec3D_memRead( struct bbs_Context* cpA,
89 							   struct bts_Flt16Vec3D* ptrA,
90 							   const uint16* memPtrA );
91 
92 /* ---- \ghd{ exec functions } --------------------------------------------- */
93 
94 /** creates vector from 16 bit values */
95 struct bts_Flt16Vec3D bts_Flt16Vec3D_create16( int16 xA, int16 yA, int16 zA, int16 bbpA );
96 
97 /** creates vector from 32 bit values (automatic adjustment of bbp value) */
98 struct bts_Flt16Vec3D bts_Flt16Vec3D_create32( int32 xA, int32 yA, int32 zA, int32 bbpA );
99 
100 /** returns square norm of vector; return bbp is  ptrA->bbpE * 2 */
101 uint32 bts_Flt16Vec3D_norm2( const struct bts_Flt16Vec3D* ptrA );
102 
103 /** returns norm of vector; return bbp is ptrA->bbpE*/
104 uint16 bts_Flt16Vec3D_norm( const struct bts_Flt16Vec3D* ptrA );
105 
106 /** normalizes vector; bbpA defines number of bits behind the point */
107 void bts_Flt16Vec3D_normalize( struct bts_Flt16Vec3D* ptrA );
108 
109 /** returns normalized vector; bbpA defines number of bits behind the point */
110 struct bts_Flt16Vec3D bts_Flt16Vec3D_normalized( const struct bts_Flt16Vec3D* ptrA );
111 
112 /** adds two vectors; returns resulting vector */
113 struct bts_Flt16Vec3D bts_Flt16Vec3D_add( struct bts_Flt16Vec3D vec1A, struct bts_Flt16Vec3D vec2A );
114 
115 /** subtracts vec1A - vec2A; returns resulting vector */
116 struct bts_Flt16Vec3D bts_Flt16Vec3D_sub( struct bts_Flt16Vec3D vec1A, struct bts_Flt16Vec3D vec2A );
117 
118 /** multiplies vecor with scalar; returns resulting vector */
119 struct bts_Flt16Vec3D bts_Flt16Vec3D_mul( struct bts_Flt16Vec3D vecA, int16 factorA, int32 bbpFactorA );
120 
121 #endif /* bts_FLT16VEC3D_EM_H */
122 
123