Matrix.h revision 3d58c03de0d8877b36cdb78b0ca8b5cac7f600e2
1/* 2 * Copyright (C) 2010 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 ANDROID_UI_MATRIX_H 18#define ANDROID_UI_MATRIX_H 19 20#include <SkMatrix.h> 21 22#include "Rect.h" 23 24namespace android { 25namespace uirenderer { 26 27/////////////////////////////////////////////////////////////////////////////// 28// Classes 29/////////////////////////////////////////////////////////////////////////////// 30 31class Matrix4 { 32public: 33 float data[16]; 34 35 Matrix4() { 36 loadIdentity(); 37 } 38 39 Matrix4(const float* v) { 40 load(v); 41 } 42 43 Matrix4(const Matrix4& v) { 44 load(v); 45 } 46 47 Matrix4(const SkMatrix& v) { 48 load(v); 49 } 50 51 void loadIdentity(); 52 53 void load(const float* v); 54 void load(const Matrix4& v); 55 void load(const SkMatrix& v); 56 57 void loadTranslate(float x, float y, float z); 58 void loadScale(float sx, float sy, float sz); 59 void loadRotate(float angle, float x, float y, float z); 60 void loadMultiply(const Matrix4& u, const Matrix4& v); 61 62 void loadOrtho(float left, float right, float bottom, float top, float near, float far); 63 64 void multiply(const Matrix4& v) { 65 Matrix4 u; 66 u.loadMultiply(*this, v); 67 load(u); 68 } 69 70 void translate(float x, float y, float z) { 71 Matrix4 u; 72 u.loadTranslate(x, y, z); 73 multiply(u); 74 } 75 76 void scale(float sx, float sy, float sz) { 77 Matrix4 u; 78 u.loadScale(sx, sy, sz); 79 multiply(u); 80 } 81 82 void rotate(float angle, float x, float y, float z) { 83 Matrix4 u; 84 u.loadRotate(angle, x, y, z); 85 multiply(u); 86 } 87 88 void copyTo(float* v) const; 89 void copyTo(SkMatrix& v) const; 90 91 /** 92 * Does not apply rotations! 93 */ 94 void mapRect(Rect& r) const; 95 96 float getTranslateX(); 97 float getTranslateY(); 98 99 void dump() const; 100 101private: 102 inline float get(int i, int j) const { 103 return data[i * 4 + j]; 104 } 105 106 inline void set(int i, int j, float v) { 107 data[i * 4 + j] = v; 108 } 109}; // class Matrix4 110 111/////////////////////////////////////////////////////////////////////////////// 112// Types 113/////////////////////////////////////////////////////////////////////////////// 114 115typedef Matrix4 mat4; 116 117}; // namespace uirenderer 118}; // namespace android 119 120#endif // ANDROID_UI_MATRIX_H 121