/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield * * This library is open source and may be redistributed and/or modified under * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or * (at your option) any later version. The full license is in LICENSE file * included with this distribution, and on the openscenegraph.org website. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * OpenSceneGraph Public License for more details. */ //osgParticle - Copyright (C) 2002 Marco Jez #ifndef OSGPARTICLE_PROGRAM #define OSGPARTICLE_PROGRAM 1 #include <osgParticle/Export> #include <osgParticle/ParticleProcessor> #include <osg/Object> #include <osg/Node> #include <osg/NodeVisitor> #include <osg/CopyOp> namespace osgParticle { /** An abstract <CODE>ParticleProcessor</CODE> descendant for modifying particles "on the fly" during the cull traversal. Descendants of this class must implement the <CODE>execute()</CODE> method, which should iterate through all particles in the linked particle system and modify them somehow (usually updating their velocity vector). */ class OSGPARTICLE_EXPORT Program: public ParticleProcessor { public: Program(); Program(const Program& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY); virtual const char* libraryName() const { return "osgParticle"; } virtual const char* className() const { return "Program"; } virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Program*>(obj) != 0; } virtual void accept(osg::NodeVisitor& nv) { if (nv.validNodeMask(*this)) { nv.pushOntoNodePath(this); nv.apply(*this); nv.popFromNodePath(); } } protected: virtual ~Program() {} Program& operator=(const Program&) { return *this; } /// Implementation of <CODE>ParticleProcessor::process()</CODE>. Do not call this method by yourself. inline void process(double dt); /// Execute the program on the particle system. Must be overridden in descendant classes. virtual void execute(double dt) = 0; private: }; // INLINE FUNCTIONS inline void Program::process(double dt) { execute(dt); } } #endif