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MatrixTransformation.cxx

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00001 /* ========================================================================
00002  * Copyright (c) 2006,
00003  * Institute for Computer Graphics and Vision
00004  * Graz University of Technology
00005  * All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are
00009  * met:
00010  *
00011  * Redistributions of source code must retain the above copyright notice,
00012  * this list of conditions and the following disclaimer.
00013  *
00014  * Redistributions in binary form must reproduce the above copyright
00015  * notice, this list of conditions and the following disclaimer in the
00016  * documentation and/or other materials provided with the distribution.
00017  *
00018  * Neither the name of the Graz University of Technology nor the names of
00019  * its contributors may be used to endorse or promote products derived from
00020  * this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
00023  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
00024  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00025  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
00026  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00027  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00028  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033  * ========================================================================
00034  * PROJECT: OpenTracker
00035  * ======================================================================== */
00042 /* ======================================================================= */
00043 
00044 // this will remove the warning 4786
00045 #include "../tool/disable4786.h"
00046 
00047 #include "MatrixTransformation.h"
00048 
00049 namespace ot {
00050 
00051     // default constructor method.
00052 
00053     MatrixTransformation::MatrixTransformation()
00054     {
00055         for( int i = 0; i < 3; i++ )
00056             for( int j = 0; j < 4; j++ )
00057                 if( i == j )
00058                     matrix[i][j] = 1;
00059                 else
00060                     matrix[i][j] = 0;
00061     }
00062 
00063     // constructor methods.
00064 
00065     MatrixTransformation::MatrixTransformation( float * matrix_[4] )
00066         : Transformation()
00067     {
00068         for( int i = 0; i < 3; i ++ )
00069         {
00070             for( int j = 0; j < 4; j ++ )
00071                 matrix[i][j] = matrix_[i][j];
00072         }
00073     }
00074 
00075     MatrixTransformation::MatrixTransformation( float * matrix_)
00076         : Transformation()
00077     {
00078         for( int i = 0; i < 3; i ++ )
00079         {
00080             for( int j = 0; j < 4; j ++ )
00081                 matrix[i][j] = matrix_[4*i+j];
00082         }
00083     }
00084     // transforms a event.
00085 
00086     Event* MatrixTransformation::transformEvent( Event* event )
00087     {
00088 
00089         // transform the position of the event
00090         std::vector<float> &pos = event->getPosition();
00091         localEvent.getPosition()[0] = matrix[0][0]*pos[0] + matrix[0][1]*pos[1] + matrix[0][2]*pos[2] + matrix[0][3];
00092         localEvent.getPosition()[1] = matrix[1][0]*pos[0] + matrix[1][1]*pos[1] + matrix[1][2]*pos[2] + matrix[1][3];
00093         localEvent.getPosition()[2] = matrix[2][0]*pos[0] + matrix[2][1]*pos[1] + matrix[2][2]*pos[2] + matrix[2][3];
00094 
00095         localEvent.getOrientation() = event->getOrientation();
00096 
00097         // copy other event fields
00098         localEvent.copyAllButStdAttr(*event);
00099 
00100         localEvent.getButton() = event->getButton();
00101         localEvent.getConfidence() = event->getConfidence();
00102         localEvent.time = event->time;
00103         return &localEvent;
00104     }
00105 
00106 } // namespace ot
00107 
00108 
00109 /* 
00110  * ------------------------------------------------------------
00111  *   End of MatrixTransformation.cxx
00112  * ------------------------------------------------------------
00113  *   Automatic Emacs configuration follows.
00114  *   Local Variables:
00115  *   mode:c++
00116  *   c-basic-offset: 4
00117  *   eval: (c-set-offset 'substatement-open 0)
00118  *   eval: (c-set-offset 'case-label '+)
00119  *   eval: (c-set-offset 'statement 'c-lineup-runin-statements)
00120  *   eval: (setq indent-tabs-mode nil)
00121  *   End:
00122  * ------------------------------------------------------------ 
00123  */

copyright (c) 2006 Graz University of Technology