OpenWalnut
1.4.0
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00001 //--------------------------------------------------------------------------- 00002 // 00003 // Project: OpenWalnut ( http://www.openwalnut.org ) 00004 // 00005 // Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS 00006 // For more information see http://www.openwalnut.org/copying 00007 // 00008 // This file is part of OpenWalnut. 00009 // 00010 // OpenWalnut is free software: you can redistribute it and/or modify 00011 // it under the terms of the GNU Lesser General Public License as published by 00012 // the Free Software Foundation, either version 3 of the License, or 00013 // (at your option) any later version. 00014 // 00015 // OpenWalnut is distributed in the hope that it will be useful, 00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00018 // GNU Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public License 00021 // along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>. 00022 // 00023 //--------------------------------------------------------------------------- 00024 00025 #ifndef WGESHADERANIMATIONCALLBACK_H 00026 #define WGESHADERANIMATIONCALLBACK_H 00027 00028 #include "stdint.h" 00029 00030 #include "boost/date_time/posix_time/posix_time.hpp" 00031 00032 #include <osg/Uniform> 00033 00034 /** 00035 * This is a uniform callback setting the uniform to the current time in milliseconds, hundredth of a second or tenth of a second. 00036 */ 00037 class WGEShaderAnimationCallback: public osg::Uniform::Callback 00038 { 00039 public: 00040 /** 00041 * Default constructor. Creates a new instance and sets the precision 00042 * 00043 * \param ticksPerSecond the uniform will increase by 1 every hundredth second if =100, every 10th second if =10 and every second if =1. 00044 */ 00045 explicit WGEShaderAnimationCallback( int ticksPerSecond = 100 ); 00046 00047 /** 00048 * Destructor. 00049 */ 00050 virtual ~WGEShaderAnimationCallback(); 00051 00052 /** 00053 * Operator called on uniform update. 00054 * 00055 * \param uniform the uniform to update 00056 * \param nv the visitor. 00057 */ 00058 virtual void operator() ( osg::Uniform* uniform, osg::NodeVisitor* nv ); 00059 00060 protected: 00061 /** 00062 * Timer that stops the time hopefully OS independent 00063 */ 00064 boost::posix_time::ptime m_start; 00065 00066 /** 00067 * Number of ticks to count per second. 00068 */ 00069 int m_ticksPerSec; 00070 00071 /** 00072 * Ratio between milliseconds and m_ticksPerSec 00073 */ 00074 double m_tickMillisecRatio; 00075 00076 private: 00077 }; 00078 00079 #endif // WGESHADERANIMATIONCALLBACK_H 00080