egl/sfopenvg/riMath.cpp
branchEGL_MERGE
changeset 180 f767bd5f4cfc
parent 119 5f371025658c
child 181 c1509651cd2b
--- a/egl/sfopenvg/riMath.cpp	Fri Jul 16 18:54:03 2010 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,75 +0,0 @@
-/*------------------------------------------------------------------------
- *
- * OpenVG 1.1 Reference Implementation
- * -----------------------------------
- *
- * Copyright (c) 2007 The Khronos Group Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and /or associated documentation files
- * (the "Materials "), to deal in the Materials without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Materials,
- * and to permit persons to whom the Materials are 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 Materials. 
- *
- * THE MATERIALS ARE 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 MATERIALS OR
- * THE USE OR OTHER DEALINGS IN THE MATERIALS.
- *
- *//**
- * \file
- * \brief	Implementation of non-inline matrix functions.
- * \note	
- *//*-------------------------------------------------------------------*/
-
-#include "riDefs.h"
-#include "riMath.h"
-
-namespace OpenVGRI
-{
-
-/*-------------------------------------------------------------------*//*!
-* \brief	Inverts a 3x3 matrix. Returns false if the matrix is singular.
-* \param	
-* \return	
-* \note		
-*//*-------------------------------------------------------------------*/
-
-bool Matrix3x3::invert()
-{
-	bool affine = isAffine();
-	RIfloat det00 = matrix[1][1]*matrix[2][2] - matrix[2][1]*matrix[1][2];
-	RIfloat det01 = matrix[2][0]*matrix[1][2] - matrix[1][0]*matrix[2][2];
-	RIfloat det02 = matrix[1][0]*matrix[2][1] - matrix[2][0]*matrix[1][1];
-
-	RIfloat d = matrix[0][0]*det00 + matrix[0][1]*det01 + matrix[0][2]*det02;
-	if( d == 0.0f ) return false;	//singular, leave the matrix unmodified and return false
-	d = 1.0f / d;
-
-	Matrix3x3 t;
-	t[0][0] = d * det00;
-	t[1][0] = d * det01;
-	t[2][0] = d * det02;
-	t[0][1] = d * (matrix[2][1]*matrix[0][2] - matrix[0][1]*matrix[2][2]);
-	t[1][1] = d * (matrix[0][0]*matrix[2][2] - matrix[2][0]*matrix[0][2]);
-	t[2][1] = d * (matrix[2][0]*matrix[0][1] - matrix[0][0]*matrix[2][1]);
-	t[0][2] = d * (matrix[0][1]*matrix[1][2] - matrix[1][1]*matrix[0][2]);
-	t[1][2] = d * (matrix[1][0]*matrix[0][2] - matrix[0][0]*matrix[1][2]);
-	t[2][2] = d * (matrix[0][0]*matrix[1][1] - matrix[1][0]*matrix[0][1]);
-	if(affine)
-		t[2].set(0,0,1);	//affine matrix stays affine
-	*this = t;
-	return true;
-}
-
-//==============================================================================================
-
-}	//namespace OpenVGRI