motionblurcallback.h

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00001 /***************************************************************************
00002  *  callback class for motion blur                                         *
00003  *  the param globalData.odeConfig.motionPersistence determines            *
00004  *  the level of motion blur                                               *
00005  *                                                                         *
00006  ***************************************************************************/
00007 /***************************************************************************
00008  *   Copyright (C) 2005-2011 LpzRobots development team                    *
00009  *    Georg Martius  <georg dot martius at web dot de>                     *
00010  *    Frank Guettler <guettler at informatik dot uni-leipzig dot de        *
00011  *    Frank Hesse    <frank at nld dot ds dot mpg dot de>                  *
00012  *    Ralf Der       <ralfder at mis dot mpg dot de>                       *
00013  *                                                                         *
00014  *   This program is free software; you can redistribute it and/or modify  *
00015  *   it under the terms of the GNU General Public License as published by  *
00016  *   the Free Software Foundation; either version 2 of the License, or     *
00017  *   (at your option) any later version.                                   *
00018  *                                                                         *
00019  *   This program is distributed in the hope that it will be useful,       *
00020  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00021  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00022  *   GNU General Public License for more details.                          *
00023  *                                                                         *
00024  *   You should have received a copy of the GNU General Public License     *
00025  *   along with this program; if not, write to the                         *
00026  *   Free Software Foundation, Inc.,                                       *
00027  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
00028  *                                                                         *
00029  ***************************************************************************/
00030 #ifndef __MOTIONBLURCALLBACK_H
00031 #define __MOTIONBLURCALLBACK_H
00032 
00033 #include <osgViewer/Viewer>
00034 #include "globaldata.h"
00035 
00036 namespace lpzrobots {
00037   
00038   /** a class that enables motion blur for the scenegraph 
00039    *  should be called in the main simulation loop
00040    */
00041   class MotionBlurOperation: public osg::Operation
00042   {
00043   public:
00044     /** globalData.odeConfig.motionPersistence - determines the level of motion blur,
00045      *  between 0.0 and 1.0, for example:
00046      *  heavy motion blur is set by globalData.odeConfig.motionPersistance=0.25
00047      *  light motuib blur is set by globalData.odeConfig.motionPersistence=0.1
00048      */ 
00049     MotionBlurOperation(GlobalData& global):
00050       osg::Operation("MotionBlur",true),
00051       cleared_(false),
00052       persistence_(global.odeConfig.motionPersistence)
00053     {
00054     }
00055     
00056     virtual void operator () (osg::Object* object);
00057 
00058   private:
00059     bool cleared_;
00060     double t0_;
00061     double persistence_;
00062   };
00063 
00064 } // namespace
00065 
00066 
00067 #endif