orthographic.cpp
Go to the documentation of this file.
00001 #include "orthographic.h"
00002 
00003 #include <OGRE/OgreMatrix4.h>
00004 
00005 namespace ogre_tools
00006 {
00007 
00008 void buildScaledOrthoMatrix(Ogre::Matrix4& proj, float left, float right, float bottom, float top, float near, float far)
00009 {
00010   float invw = 1 / (right - left);
00011   float invh = 1 / (top - bottom);
00012   float invd = 1 / (far - near);
00013 
00014   proj = Ogre::Matrix4::ZERO;
00015   proj[0][0] = 2 * invw;
00016   proj[0][3] = -(right + left) * invw;
00017   proj[1][1] = 2 * invh;
00018   proj[1][3] = -(top + bottom) * invh;
00019   proj[2][2] = -2 * invd;
00020   proj[2][3] = -(far + near) * invd;
00021   proj[3][3] = 1;
00022 }
00023 
00024 }


ogre_tools_qt
Author(s): Josh Faust
autogenerated on Fri Dec 6 2013 20:56:42