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_INT16VEC2D_EM_H 18 #define bts_INT16VEC2D_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 /** 2d vector */ 35 struct bts_Int16Vec2D 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 49 /* ---- associated objects ------------------------------------------------- */ 50 51 /* ---- external functions ------------------------------------------------- */ 52 53 /* ---- \ghd{ constructor/destructor } ------------------------------------- */ 54 55 /** initializes vector */ 56 void bts_Int16Vec2D_init( struct bts_Int16Vec2D* ptrA ); 57 58 /** destroys vector */ 59 void bts_Int16Vec2D_exit( struct bts_Int16Vec2D* ptrA ); 60 61 /* ---- \ghd{ operators } -------------------------------------------------- */ 62 63 /* ---- \ghd{ query functions } -------------------------------------------- */ 64 65 /* ---- \ghd{ modify functions } ------------------------------------------- */ 66 67 /* ---- \ghd{ memory I/O } ------------------------------------------------- */ 68 69 /** size object needs when written to memory */ 70 uint32 bts_Int16Vec2D_memSize( struct bbs_Context* cpA, 71 const struct bts_Int16Vec2D* ptrA ); 72 73 /** writes object to memory; returns number of bytes written */ 74 uint32 bts_Int16Vec2D_memWrite( struct bbs_Context* cpA, 75 const struct bts_Int16Vec2D* ptrA, 76 uint16* memPtrA ); 77 78 /** reads object from memory; returns number of bytes read */ 79 uint32 bts_Int16Vec2D_memRead( struct bbs_Context* cpA, 80 struct bts_Int16Vec2D* ptrA, 81 const uint16* memPtrA ); 82 83 /* ---- \ghd{ exec functions } --------------------------------------------- */ 84 85 /** dot product of vectors */ 86 int32 bts_Int16Vec2D_dotPrd( const struct bts_Int16Vec2D* vec1PtrA, 87 const struct bts_Int16Vec2D* vec2PtrA ); 88 89 /** returns square norm of vector */ 90 uint32 bts_Int16Vec2D_norm2( const struct bts_Int16Vec2D* ptrA ); 91 92 /** returns norm of vector */ 93 uint16 bts_Int16Vec2D_norm( const struct bts_Int16Vec2D* ptrA ); 94 95 /** normalizes vector; bbpA defines number of bits behind the point */ 96 void bts_Int16Vec2D_normalize( struct bts_Int16Vec2D* ptrA, int32 bbpA ); 97 98 /** returns normalized vector; bbpA defines number of bits behind the point */ 99 struct bts_Int16Vec2D bts_Int16Vec2D_normalized( const struct bts_Int16Vec2D* ptrA, int32 bbpA ); 100 101 /** computes angle between vector and x axis*/ 102 phase16 bts_Int16Vec2D_angle( const struct bts_Int16Vec2D* vecPtrA ); 103 104 /** computes angle between two vectors */ 105 phase16 bts_Int16Vec2D_enclosedAngle( const struct bts_Int16Vec2D* vec1PtrA, 106 const struct bts_Int16Vec2D* vec2PtrA ); 107 108 #endif /* bts_INT16VEC2D_EM_H */ 109 110