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 */ 35struct 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 */ 56void bts_Int16Vec2D_init( struct bts_Int16Vec2D* ptrA ); 57 58/** destroys vector */ 59void 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 */ 70uint32 bts_Int16Vec2D_memSize( struct bbs_Context* cpA, 71 const struct bts_Int16Vec2D* ptrA ); 72 73/** writes object to memory; returns number of bytes written */ 74uint32 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 */ 79uint32 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 */ 86int32 bts_Int16Vec2D_dotPrd( const struct bts_Int16Vec2D* vec1PtrA, 87 const struct bts_Int16Vec2D* vec2PtrA ); 88 89/** returns square norm of vector */ 90uint32 bts_Int16Vec2D_norm2( const struct bts_Int16Vec2D* ptrA ); 91 92/** returns norm of vector */ 93uint16 bts_Int16Vec2D_norm( const struct bts_Int16Vec2D* ptrA ); 94 95/** normalizes vector; bbpA defines number of bits behind the point */ 96void bts_Int16Vec2D_normalize( struct bts_Int16Vec2D* ptrA, int32 bbpA ); 97 98/** returns normalized vector; bbpA defines number of bits behind the point */ 99struct bts_Int16Vec2D bts_Int16Vec2D_normalized( const struct bts_Int16Vec2D* ptrA, int32 bbpA ); 100 101/** computes angle between vector and x axis*/ 102phase16 bts_Int16Vec2D_angle( const struct bts_Int16Vec2D* vecPtrA ); 103 104/** computes angle between two vectors */ 105phase16 bts_Int16Vec2D_enclosedAngle( const struct bts_Int16Vec2D* vec1PtrA, 106 const struct bts_Int16Vec2D* vec2PtrA ); 107 108#endif /* bts_INT16VEC2D_EM_H */ 109 110