be285c62c0
the position of the emitter in the previous frame and the new position in the new frame, the number of particles added also scales up to compensate for this movement.
79 lines
2.2 KiB
C++
79 lines
2.2 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 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_POINT_PLACER
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#define OSGPARTICLE_POINT_PLACER 1
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#include <osgParticle/CenteredPlacer>
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#include <osgParticle/Particle>
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#include <osg/CopyOp>
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#include <osg/Object>
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namespace osgParticle
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{
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/** A point-shaped particle placer.
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This placer class uses the center point defined in its base class <CODE>CenteredPlacer</CODE>
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to place there all incoming particles.
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*/
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class PointPlacer: public CenteredPlacer {
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public:
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inline PointPlacer();
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inline PointPlacer(const PointPlacer& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
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META_Object(osgParticle, PointPlacer);
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/** Place a particle.
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This method is called automatically by <CODE>ModularEmitter</CODE> and should not be called
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manually.
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*/
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inline void place(Particle* P) const;
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/// return the control position
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inline osg::Vec3 getControlPosition() const;
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protected:
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virtual ~PointPlacer() {}
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PointPlacer& operator=(const PointPlacer&) { return *this; }
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};
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// INLINE FUNCTIONS
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inline PointPlacer::PointPlacer()
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: CenteredPlacer()
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{
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}
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inline PointPlacer::PointPlacer(const PointPlacer& copy, const osg::CopyOp& copyop)
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: CenteredPlacer(copy, copyop)
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{
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}
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inline void PointPlacer::place(Particle* P) const
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{
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P->setPosition(getCenter());
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}
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inline osg::Vec3 PointPlacer::getControlPosition() const
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{
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return getCenter();
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}
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}
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#endif
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