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/* -*-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_EMITTER
#define OSGPARTICLE_EMITTER 1
#include <osgParticle/Export>
#include <osgParticle/ParticleProcessor>
#include <osgParticle/Particle>
#include <osg/Object>
#include <osg/Node>
#include <osg/NodeVisitor>
#include <osg/CopyOp>
namespace osgParticle
{
/** An abstract base class for particle emitters.
Descendant classes must override the <CODE>emitParticles()</CODE> method to generate new particles by
calling the <CODE>ParticleSystem::createParticle()</CODE> method on the particle system associated
to the emitter.
*/
class OSGPARTICLE_EXPORT Emitter: public ParticleProcessor {
public:
Emitter();
Emitter(const Emitter& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
virtual const char* libraryName() const { return "osgParticle"; }
virtual const char* className() const { return "Emitter"; }
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Emitter*>(obj) != 0; }
virtual void accept(osg::NodeVisitor& nv) { if (nv.validNodeMask(*this)) { nv.pushOntoNodePath(this); nv.apply(*this); nv.popFromNodePath(); } }
/// Get the particle template.
inline const Particle& getParticleTemplate() const;
/// Set the particle template (particle is copied).
inline void setParticleTemplate(const Particle& p);
/// Return whether the particle system's default template should be used.
inline bool getUseDefaultTemplate() const;
/** Set whether the default particle template should be used.
When this flag is true, the particle template is ignored, and the
particle system's default template is used instead.
*/
inline void setUseDefaultTemplate(bool v);
protected:
virtual ~Emitter() {}
Emitter& operator=(const Emitter&) { return *this; }
inline void process(double dt);
virtual void emitParticles(double dt) = 0;
bool _usedeftemp;
Particle _ptemp;
};
// INLINE FUNCTIONS
inline const Particle& Emitter::getParticleTemplate() const
{
return _ptemp;
}
inline void Emitter::setParticleTemplate(const Particle& p)
{
_ptemp = p;
_usedeftemp = false;
}
inline bool Emitter::getUseDefaultTemplate() const
{
return _usedeftemp;
}
inline void Emitter::setUseDefaultTemplate(bool v)
{
_usedeftemp = v;
}
inline void Emitter::process(double dt)
{
emitParticles(dt);
}
}
#endif
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