Matrix.h revision 9d5316e3f56d138504565ff311145ac01621dff4
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 Matrix4() { 34 loadIdentity(); 35 } 36 37 Matrix4(const float* v) { 38 load(v); 39 } 40 41 Matrix4(const Matrix4& v) { 42 load(v); 43 } 44 45 Matrix4(const SkMatrix& v) { 46 load(v); 47 } 48 49 void loadIdentity(); 50 51 void load(const float* v); 52 void load(const Matrix4& v); 53 void load(const SkMatrix& v); 54 55 void loadTranslate(float x, float y, float z); 56 void loadScale(float sx, float sy, float sz); 57 void loadRotate(float angle, float x, float y, float z); 58 void loadMultiply(const Matrix4& u, const Matrix4& v); 59 60 void loadOrtho(float left, float right, float bottom, float top, float near, float far); 61 62 void multiply(const Matrix4& v) { 63 Matrix4 u; 64 u.loadMultiply(*this, v); 65 load(u); 66 } 67 68 void translate(float x, float y, float z) { 69 Matrix4 u; 70 u.loadTranslate(x, y, z); 71 multiply(u); 72 } 73 74 void scale(float sx, float sy, float sz) { 75 Matrix4 u; 76 u.loadScale(sx, sy, sz); 77 multiply(u); 78 } 79 80 void rotate(float angle, float x, float y, float z) { 81 Matrix4 u; 82 u.loadRotate(angle, x, y, z); 83 multiply(u); 84 } 85 86 void copyTo(float* v) const; 87 void copyTo(SkMatrix& v) const; 88 89 void mapRect(Rect& r) const; 90 91 void dump() const; 92 93private: 94 inline float get(int i, int j) const { 95 return mMat[i * 4 + j]; 96 } 97 98 inline void set(int i, int j, float v) { 99 mMat[i * 4 + j] = v; 100 } 101 102 float mMat[16]; 103}; // class Matrix4 104 105/////////////////////////////////////////////////////////////////////////////// 106// Types 107/////////////////////////////////////////////////////////////////////////////// 108 109typedef Matrix4 mat4; 110 111}; // namespace uirenderer 112}; // namespace android 113 114#endif // ANDROID_UI_MATRIX_H 115