1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef sw_MatrixStack_hpp 16 #define sw_MatrixStack_hpp 17 18 #include "Renderer/Matrix.hpp" 19 20 namespace sw 21 { 22 class MatrixStack 23 { 24 public: 25 MatrixStack(int size = 2); 26 27 ~MatrixStack(); 28 29 void identity(); 30 void load(const Matrix &M); 31 void load(const float *M); 32 void load(const double *M); 33 34 void translate(float x, float y, float z); 35 void translate(double x, double y, double z); 36 void rotate(float angle, float x, float y, float z); 37 void rotate(double angle, double x, double y, double z); 38 void scale(float x, float y, float z); 39 void scale(double x, double y, double z); 40 void multiply(const float *M); 41 void multiply(const double *M); 42 43 void frustum(float left, float right, float bottom, float top, float zNear, float zFar); 44 void ortho(double left, double right, double bottom, double top, double zNear, double zFar); 45 46 bool push(); // False on overflow 47 bool pop(); // False on underflow 48 49 const Matrix ¤t(); 50 bool isIdentity() const; 51 52 private: 53 int top; 54 int size; 55 Matrix *stack; 56 }; 57 } 58 59 #endif // sw_MatrixStack_hpp 60