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68 lines
2.3 KiB
68 lines
2.3 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_PLACER |
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#define OSGPARTICLE_PLACER 1 |
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#include <osg/CopyOp> |
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#include <osg/Object> |
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#include <osg/Vec3> |
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namespace osgParticle |
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{ |
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class Particle; |
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/** An abstract base class for implementing <I>particle placers</I>. A placer is an object which take |
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a particle as input, and places it somewhere by setting its position vector. Placer objects are |
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used by the <CODE>ModularEmitter</CODE> class as part of the particle emission process. |
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*/ |
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class Placer: public osg::Object { |
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public: |
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inline Placer(); |
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inline Placer(const Placer& 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 "Placer"; } |
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virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Placer *>(obj) != 0; } |
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/// Place a particle. Must be implemented in descendant classes. |
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virtual void place(Particle* P) const = 0; |
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/// Volume of the placer. Can be implemented in descendant classes. |
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virtual float volume() const { return 1.0f; } |
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/// Return the control position of particles that placer will generate. Must be implemented in descendant classes. |
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virtual osg::Vec3 getControlPosition() const = 0; |
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protected: |
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~Placer() {} |
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Placer& operator=(const Placer& ) { return *this; } |
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}; |
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// INLINE FUNCTIONS |
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inline Placer::Placer() |
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: osg::Object() |
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{ |
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} |
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inline Placer::Placer(const Placer& copy, const osg::CopyOp& copyop) |
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: osg::Object(copy, copyop) |
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{ |
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} |
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} |
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#endif
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