Matrix.h revision 5b3b35296e8b2c8d3f07d32bb645d5414db41a1d
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_HWUI_MATRIX_H 18#define ANDROID_HWUI_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 enum Entry { 36 kScaleX = 0, 37 kSkewY = 1, 38 kPerspective0 = 3, 39 kSkewX = 4, 40 kScaleY = 5, 41 kPerspective1 = 7, 42 kScaleZ = 10, 43 kTranslateX = 12, 44 kTranslateY = 13, 45 kTranslateZ = 14, 46 kPerspective2 = 15 47 }; 48 49 Matrix4() { 50 loadIdentity(); 51 } 52 53 Matrix4(const float* v) { 54 load(v); 55 } 56 57 Matrix4(const Matrix4& v) { 58 load(v); 59 } 60 61 Matrix4(const SkMatrix& v) { 62 load(v); 63 } 64 65 void loadIdentity(); 66 67 void load(const float* v); 68 void load(const Matrix4& v); 69 void load(const SkMatrix& v); 70 71 void loadInverse(const Matrix4& v); 72 73 void loadTranslate(float x, float y, float z); 74 void loadScale(float sx, float sy, float sz); 75 void loadRotate(float angle, float x, float y, float z); 76 void loadMultiply(const Matrix4& u, const Matrix4& v); 77 78 void loadOrtho(float left, float right, float bottom, float top, float near, float far); 79 80 void multiply(const Matrix4& v) { 81 Matrix4 u; 82 u.loadMultiply(*this, v); 83 load(u); 84 } 85 86 void multiply(float v); 87 88 void translate(float x, float y, float z) { 89 Matrix4 u; 90 u.loadTranslate(x, y, z); 91 multiply(u); 92 } 93 94 void scale(float sx, float sy, float sz) { 95 Matrix4 u; 96 u.loadScale(sx, sy, sz); 97 multiply(u); 98 } 99 100 void rotate(float angle, float x, float y, float z) { 101 Matrix4 u; 102 u.loadRotate(angle, x, y, z); 103 multiply(u); 104 } 105 106 bool changesBounds(); 107 108 void copyTo(float* v) const; 109 void copyTo(SkMatrix& v) const; 110 111 void mapRect(Rect& r) const; 112 void mapPoint(float& x, float& y) const; 113 114 float getTranslateX(); 115 float getTranslateY(); 116 117 void dump() const; 118 119private: 120 bool mSimpleMatrix; 121 122 inline float get(int i, int j) const { 123 return data[i * 4 + j]; 124 } 125 126 inline void set(int i, int j, float v) { 127 data[i * 4 + j] = v; 128 } 129}; // class Matrix4 130 131/////////////////////////////////////////////////////////////////////////////// 132// Types 133/////////////////////////////////////////////////////////////////////////////// 134 135typedef Matrix4 mat4; 136 137}; // namespace uirenderer 138}; // namespace android 139 140#endif // ANDROID_HWUI_MATRIX_H 141