From cff55907214aa3b238b7a89a05709b5a7383c744 Mon Sep 17 00:00:00 2001 From: Ming Date: Mon, 19 Jul 2010 06:24:04 +0000 Subject: [PATCH] issue #11: add TransformUtils.cpp and TransformUtils.h --- cocos2dx/support/TransformUtils.cpp | 45 +++++++++++++++++++++++++++++ cocos2dx/support/TransformUtils.h | 35 ++++++++++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 cocos2dx/support/TransformUtils.cpp create mode 100644 cocos2dx/support/TransformUtils.h diff --git a/cocos2dx/support/TransformUtils.cpp b/cocos2dx/support/TransformUtils.cpp new file mode 100644 index 0000000000..74f01d524b --- /dev/null +++ b/cocos2dx/support/TransformUtils.cpp @@ -0,0 +1,45 @@ +/**************************************************************************** +Copyright (c) 2010 cocos2d-x.org + +http://www.cocos2d-x.org + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +****************************************************************************/ + +#include "TransformUtils.h" +#include "cocoa/CGAffineTransform.h" + +void CGAffineToGL(const CGAffineTransform *t, GLfloat *m) +{ + // | m[0] m[4] m[8] m[12] | | m11 m21 m31 m41 | | a c 0 tx | + // | m[1] m[5] m[9] m[13] | | m12 m22 m32 m42 | | b d 0 ty | + // | m[2] m[6] m[10] m[14] | <=> | m13 m23 m33 m43 | <=> | 0 0 1 0 | + // | m[3] m[7] m[11] m[15] | | m14 m24 m34 m44 | | 0 0 0 1 | + + m[2] = m[3] = m[6] = m[7] = m[8] = m[9] = m[11] = m[14] = 0.0f; + m[10] = m[15] = 1.0f; + m[0] = t->a; m[4] = t->c; m[12] = t->tx; + m[1] = t->b; m[5] = t->d; m[13] = t->ty; +} + +void GLToCGAffine(const GLfloat *m, CGAffineTransform *t) +{ + t->a = m[0]; t->c = m[4]; t->tx = m[12]; + t->b = m[1]; t->d = m[5]; t->ty = m[13]; +} diff --git a/cocos2dx/support/TransformUtils.h b/cocos2dx/support/TransformUtils.h new file mode 100644 index 0000000000..46ac6c569a --- /dev/null +++ b/cocos2dx/support/TransformUtils.h @@ -0,0 +1,35 @@ +/**************************************************************************** +Copyright (c) 2010 cocos2d-x.org + +http://www.cocos2d-x.org + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +****************************************************************************/ + +#ifndef __SUPPORT_TRANSFORM_UTILS_H__ +#define __SUPPORT_TRANSFORM_UTILS_H__ + +#include + +struct CGAffineTransform; + +void CGAffineToGL(const CGAffineTransform *t, GLfloat *m); +void GLToCGAffine(const GLfloat *m, CGAffineTransform *t); + +#endif // __SUPPORT_TRANSFORM_UTILS_H__