1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version. The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * OpenSceneGraph Public License for more details.
13//osgParticle - Copyright (C) 2002 Marco Jez
15#ifndef OSGPARTICLE_COUNTER
16#define OSGPARTICLE_COUNTER 1
24 class Counter: public osg::Object {
27 inline Counter(const Counter& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY);
29 virtual const char* libraryName() const { return "osgParticle"; }
30 virtual const char* className() const { return "Counter"; }
31 virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Counter* >(obj) != 0; }
33 /** get the number of particle of create for current frame.*/
34 virtual int numParticlesToCreate(double dt) const = 0;
36 /** get the esimated maximum number of particles that would be generated duration the lifetime of a particle before it expires.*/
37 virtual int getEstimatedMaxNumOfParticles(double lifeTime) const = 0;
41 Counter &operator=(const Counter &) { return *this; }
46 inline Counter::Counter()
51 inline Counter::Counter(const Counter& copy, const osg::CopyOp& copyop)
52 : osg::Object(copy, copyop)