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68 lines
2.4 KiB
68 lines
2.4 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield |
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* |
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* This library is open source and may be redistributed and/or modified under |
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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* (at your option) any later version. The full license is in LICENSE file |
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* included with this distribution, and on the openscenegraph.org website. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* OpenSceneGraph Public License for more details. |
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*/ |
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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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{ |
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public: |
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Program(); |
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Program(const Program& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY); |
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virtual const char* libraryName() const { return "osgParticle"; } |
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virtual const char* className() const { return "Program"; } |
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virtual bool isSameKindAs(const osg::Object* obj) const { 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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