58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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//osgParticle - Copyright (C) 2002 Marco Jez
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#ifndef OSGPARTICLE_PROGRAM_
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#define OSGPARTICLE_PROGRAM_ 1
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#include <osgParticle/Export>
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#include <osgParticle/ParticleProcessor>
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#include <osg/Object>
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#include <osg/Node>
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#include <osg/NodeVisitor>
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#include <osg/CopyOp>
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namespace osgParticle
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{
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/** An abstract <CODE>ParticleProcessor</CODE> descendant for modifying particles "on the fly"
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during the cull traversal.
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Descendants of this class must implement the <CODE>execute()</CODE> method, which should iterate
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through all particles in the linked particle system and modify them somehow
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(usually updating their velocity vector).
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*/
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class OSGPARTICLE_EXPORT Program: public ParticleProcessor {
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public:
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Program();
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Program(const Program ©, const osg::CopyOp ©op = osg::CopyOp::SHALLOW_COPY);
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virtual const char *className() const { return "Program"; }
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virtual bool isSameKindAs(const osg::Object *obj) { return dynamic_cast<const Program*>(obj) != 0; }
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virtual void accept(osg::NodeVisitor& nv) { if (nv.validNodeMask(*this)) { nv.pushOntoNodePath(this); nv.apply(*this); nv.popFromNodePath(); } }
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protected:
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virtual ~Program() {}
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Program &operator=(const Program &) { return *this; }
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/// Implementation of <CODE>ParticleProcessor::process()</CODE>. Do not call this method by yourself.
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inline void process(double dt);
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/// Execute the program on the particle system. Must be overriden in descendant classes.
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virtual void execute(double dt) = 0;
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private:
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};
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// INLINE FUNCTIONS
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inline void Program::process(double dt)
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{
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execute(dt);
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}
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}
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#endif
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