f6a11b8a9e
This change adds partial support for the following transforms: - scale() - translate() - rotate() - setMatrix() - getMatrix() The transform is stored in a snapshot and saved/restored as needed. The transform is currently not applied to the clip rect and is not mapped to the vertex shader. Change-Id: Id48993453311200804149917d0c126a4d0471226
109 lines
2.4 KiB
C++
109 lines
2.4 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_MATRIX_H
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#define ANDROID_MATRIX_H
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#include <SkMatrix.h>
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namespace android {
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///////////////////////////////////////////////////////////////////////////////
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// Classes
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///////////////////////////////////////////////////////////////////////////////
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class Matrix4 {
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public:
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Matrix4() {
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loadIdentity();
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}
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Matrix4(const float* v) {
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load(v);
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}
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Matrix4(const Matrix4& v) {
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load(v);
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}
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Matrix4(const SkMatrix& v) {
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load(v);
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}
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void loadIdentity();
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void load(const float* v);
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void load(const Matrix4& v);
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void load(const SkMatrix& v);
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void loadTranslate(float x, float y, float z);
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void loadScale(float sx, float sy, float sz);
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void loadRotate(float angle, float x, float y, float z);
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void loadMultiply(const Matrix4& u, const Matrix4& v);
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void loadOrtho(float left, float right, float bottom, float top, float near, float far);
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void multiply(const Matrix4& v) {
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Matrix4 u;
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u.loadMultiply(*this, v);
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load(u);
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}
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void translate(float x, float y, float z) {
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Matrix4 u;
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u.loadTranslate(x, y, z);
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multiply(u);
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}
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void scale(float sx, float sy, float sz) {
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Matrix4 u;
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u.loadScale(sx, sy, sz);
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multiply(u);
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}
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void rotate(float angle, float x, float y, float z) {
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Matrix4 u;
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u.loadRotate(angle, x, y, z);
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multiply(u);
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}
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void copyTo(float* v) const;
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void copyTo(SkMatrix& v) const;
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void dump() const;
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private:
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inline float get(int i, int j) const {
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return mMat[i * 4 + j];
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}
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inline void set(int i, int j, float v) {
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mMat[i * 4 + j] = v;
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}
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float mMat[16];
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}; // class Matrix4
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///////////////////////////////////////////////////////////////////////////////
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// Types
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///////////////////////////////////////////////////////////////////////////////
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typedef Matrix4 mat4;
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}; // namespace android
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#endif // ANDROID_MATRIX_H
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