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Tina5/tina-libs/tina/math/mathMatr_mat2.c

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  1 /**********
  2  *
  3  * Copyright (c) 2003, Division of Imaging Science and Biomedical Engineering,
  4  * University of Manchester, UK.  All rights reserved.
  5  * 
  6  * Redistribution and use in source and binary forms, with or without modification, 
  7  * are permitted provided that the following conditions are met:
  8  * 
  9  *   . Redistributions of source code must retain the above copyright notice, 
 10  *     this list of conditions and the following disclaimer.
 11  *    
 12  *   . Redistributions in binary form must reproduce the above copyright notice,
 13  *     this list of conditions and the following disclaimer in the documentation 
 14  *     and/or other materials provided with the distribution.
 15  * 
 16  *   . Neither the name of the University of Manchester nor the names of its
 17  *     contributors may be used to endorse or promote products derived from this 
 18  *     software without specific prior written permission.
 19  * 
 20  * 
 21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 31  * POSSIBILITY OF SUCH DAMAGE.
 32  *
 33  **********
 34  *
 35  * Program :    TINA
 36  * File    :  $Source: /home/tina/cvs/tina-libs/tina/math/mathMatr_mat2.c,v $
 37  * Date    :  $Date: 2003/09/23 11:32:20 $
 38  * Version :  $Revision: 1.4 $
 39  * CVS Id  :  $Id: mathMatr_mat2.c,v 1.4 2003/09/23 11:32:20 matts Exp $
 40  *
 41  * Author  :  Legacy TINA
 42  *
 43  * Notes : Interchange mat2's and matrices
 44  *
 45  *********
 46 */
 47 /** 
 48  *  @file
 49  *  @brief  Change a Mat2 into a Matrix and vice versa. 
 50  * 
 51 */
 52 
 53 #include "mathMatr_mat2.h"
 54 
 55 #if HAVE_CONFIG_H
 56 #include <config.h>
 57 #endif
 58 
 59 #include <tina/sys/sysDef.h>
 60 #include <tina/math/math_MatrDef.h>
 61 #include <tina/math/math_GeomDef.h>
 62 #include <tina/math/mathMatr_get.h>
 63 #include <tina/math/mathMatr_alloc.h>
 64 
 65 Matrix         *matrix_mat2(Mat2 m)
 66 {
 67         Matrix         *mat = matrix_alloc(2, 2, matrix_full, float_v);
 68         float         **el;
 69         int             i, j;
 70 
 71         el = mat->el.float_v;
 72         for (i = 0; i < 2; ++i)
 73                 for (j = 0; j < 2; ++j)
 74                         el[i][j] = m.el[i][j];
 75         return (mat);
 76 }
 77 
 78 Mat2            mat2_matrix(Matrix * mat)
 79 {
 80         Mat2            m = {Mat2_id};
 81         int             i, j;
 82 
 83         for (i = 0; i < 2; ++i)
 84                 for (j = 0; j < 2; ++j)
 85                         m.el[i][j] = matrix_getf(mat, i, j);
 86         return (m);
 87 }
 88 

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