mirror of https://github.com/axmolengine/axmol.git
121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
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/****************************************************************************
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __MATH_CCAFFINETRANSFORM_H__
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#define __MATH_CCAFFINETRANSFORM_H__
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#include "platform/CCPlatformMacros.h"
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#include "math/CCGeometry.h"
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#include "math/CCMath.h"
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/**
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* @addtogroup base
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* @{
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*/
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NS_CC_BEGIN
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/**@{
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Affine transform
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a b 0
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c d 0
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tx ty 1
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Identity
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1 0 0
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0 1 0
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0 0 1
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*/
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struct CC_DLL AffineTransform {
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float a, b, c, d;
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float tx, ty;
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static const AffineTransform IDENTITY;
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};
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/**@}*/
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/**Make affine transform.*/
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CC_DLL AffineTransform __CCAffineTransformMake(float a, float b, float c, float d, float tx, float ty);
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#define AffineTransformMake __CCAffineTransformMake
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/**Multiply point (x,y,1) by a affine transform.*/
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CC_DLL Vec2 __CCPointApplyAffineTransform(const Vec2& point, const AffineTransform& t);
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#define PointApplyAffineTransform __CCPointApplyAffineTransform
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/**Multiply size (width,height,0) by a affine transform.*/
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CC_DLL Size __CCSizeApplyAffineTransform(const Size& size, const AffineTransform& t);
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#define SizeApplyAffineTransform __CCSizeApplyAffineTransform
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/**Make identity affine transform.*/
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CC_DLL AffineTransform AffineTransformMakeIdentity();
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/**Transform Rect, which will transform the four vertices of the point.*/
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CC_DLL Rect RectApplyAffineTransform(const Rect& rect, const AffineTransform& anAffineTransform);
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/**@{
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Transform vec2 and Rect by Mat4.
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*/
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CC_DLL Rect RectApplyTransform(const Rect& rect, const Mat4& transform);
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CC_DLL Vec2 PointApplyTransform(const Vec2& point, const Mat4& transform);
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/**@}*/
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/**
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Translation, equals
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1 0 1
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0 1 0 * affine transform
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tx ty 1
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*/
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CC_DLL AffineTransform AffineTransformTranslate(const AffineTransform& t, float tx, float ty);
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/**
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Rotation, equals
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cos(angle) sin(angle) 0
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-sin(angle) cos(angle) 0 * AffineTransform
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0 0 1
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*/
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CC_DLL AffineTransform AffineTransformRotate(const AffineTransform& aTransform, float anAngle);
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/**
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Scale, equals
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sx 0 0
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0 sy 0 * affineTransform
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0 0 1
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*/
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CC_DLL AffineTransform AffineTransformScale(const AffineTransform& t, float sx, float sy);
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/**Concat two affine transform, t1 * t2*/
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CC_DLL AffineTransform AffineTransformConcat(const AffineTransform& t1, const AffineTransform& t2);
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/**Compare affine transform.*/
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CC_DLL bool AffineTransformEqualToTransform(const AffineTransform& t1, const AffineTransform& t2);
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/**Get the inverse of affine transform.*/
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CC_DLL AffineTransform AffineTransformInvert(const AffineTransform& t);
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/**Concat Mat4, return t1 * t2.*/
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CC_DLL Mat4 TransformConcat(const Mat4& t1, const Mat4& t2);
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extern CC_DLL const AffineTransform AffineTransformIdentity;
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NS_CC_END
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// end of base transform
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/// @}
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#endif // __MATH_CCAFFINETRANSFORM_H__
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