Equalizer  1.4.1
util.h
00001 
00002 /*
00003  * Copyright (c)
00004  *   2008-2009, Thomas McGuire <thomas.mcguire@student.uni-siegen.de>
00005  *   2010, Stefan Eilemann <eile@equalizergraphics.com>
00006  *   2010, Sarah Amsellem <sarah.amsellem@gmail.com>
00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions are met:
00010  *
00011  * - Redistributions of source code must retain the above copyright notice, this
00012  *   list of conditions and the following disclaimer.
00013  * - Redistributions in binary form must reproduce the above copyright notice,
00014  *   this list of conditions and the following disclaimer in the documentation
00015  *   and/or other materials provided with the distribution.
00016  * - Neither the name of Eyescale Software GmbH nor the names of its
00017  *   contributors may be used to endorse or promote products derived from this
00018  *   software without specific prior written permission.
00019  *
00020  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00021  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00022  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00023  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00024  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00025  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00026  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00027  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00028  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00029  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00030  * POSSIBILITY OF SUCH DAMAGE.
00031  */
00032 
00033 #ifndef UTIL_H
00034 #define UTIL_H
00035 
00036 #include <osg/Matrix>
00037 #include <vmmlib/matrix.hpp>
00038 
00044 inline osg::Matrix vmmlToOsg( const eq::Matrix4f& matrix )
00045 {
00046     return osg::Matrix( matrix( 0, 0 ), matrix( 1, 0 ),
00047                         matrix( 2, 0 ), matrix( 3, 0 ),
00048                         matrix( 0, 1 ), matrix( 1, 1 ),
00049                         matrix( 2, 1 ), matrix( 3, 1 ),
00050                         matrix( 0, 2 ), matrix( 1, 2 ),
00051                         matrix( 2, 2 ), matrix( 3, 2 ),
00052                         matrix( 0, 3 ), matrix( 1, 3 ),
00053                         matrix( 2, 3 ), matrix( 3, 3 ));
00054 }
00055 
00061 inline eq::Vector3f orthographicVector( const eq::Vector3f &vector )
00062 {
00063     vmml::vector<3,float> result;
00064     float x = vector.x();
00065     float z = vector.z();
00066 
00067     result( 0 ) = z;
00068     result( 2 ) = -x;
00069     result( 1 ) = 0;
00070 
00071     return result;
00072 }
00073 
00074 #if 0
00075 
00080 inline vmml::vector<3,float> norm( const vmml::vector<3,float> &vector )
00081 {
00082     float length = sqrt( vector.x() * vector.x() +
00083                          vector.y() * vector.y() +
00084                          vector.z() * vector.z( ));
00085 
00086     return ( vector / length );
00087 }
00088 #endif
00089 
00090 #endif
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