1 // Created on: 2011-07-13
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #include <OpenGl_Matrix.hxx>
18 /*----------------------------------------------------------------------*/
20 void OpenGl_Multiplymat3 (OpenGl_Matrix *c, const OpenGl_Matrix *a, const OpenGl_Matrix *b)
23 for (row = 0; row < 4; row++) {
24 for (col = 0; col < 4; col++) {
26 for (i = 0; i < 4; i++)
27 sum += a->mat[row][i] * b->mat[i][col];
28 c->mat[row][col] = sum;
33 /*----------------------------------------------------------------------*/
35 void OpenGl_Transposemat3 (OpenGl_Matrix *c, const OpenGl_Matrix *a)
38 for (row = 0; row < 4; row++)
39 for (col = 0; col < 4; col++)
40 c->mat[row][col] = a->mat[col][row];