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
20namespace 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 &current();
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