FGFS-4.1/OpenSceneGraph
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Added extra controls for ParticleEffects.

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This commit is contained in:
Robert Osfield
2005-03-23 17:05:21 +00:00
parent 60597f4bbb
commit aee1e88f15
10 changed files with 239 additions and 139 deletions
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54
src/osgParticle/FireEffect.cpp
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@@ -26,9 +26,15 @@
using namespace osgParticle;
FireEffect::FireEffect()
FireEffect::FireEffect(const osg::Vec3& position, float scale, float intensity)
{
setDefaults();
_position = position;
_scale = scale;
_intensity = intensity;
buildEffect();
}
FireEffect::FireEffect(const FireEffect& copy, const osg::CopyOp& copyop):
@@ -37,6 +43,11 @@ FireEffect::FireEffect(const FireEffect& copy, const osg::CopyOp& copyop):
}
void FireEffect::setDefaults()
{
ParticleEffect::setDefaults();
}
void FireEffect::setUpEmitterAndProgram()
{
osgParticle::ParticleSystem *ps = new osgParticle::ParticleSystem;
ps->setDefaultAttributes("Images/smoke.rgb", true, false);
@@ -64,27 +75,27 @@ void FireEffect::setDefaults()
osg::Vec4(1, 0.0f, 0.f, 0.0f)));
// these are physical properties of the particle
ptemplate.setRadius(0.05f); // 5 cm wide particles
ptemplate.setMass(0.01f); // 10g heavy
ptemplate.setRadius(0.05f*_scale); // 5 cm wide particles
ptemplate.setMass(0.01f*_scale); // 10g heavy
// assign the particle template to the system.
ps->setDefaultParticleTemplate(ptemplate);
osgParticle::RandomRateCounter* counter = new osgParticle::RandomRateCounter;
counter->setRateRange(1,10); // generate 1000 particles per second
counter->setRateRange(1*_intensity*_scale,10*_intensity*_scale); // generate 1000 particles per second
emitter->setCounter(counter);
osgParticle::SectorPlacer* placer = new osgParticle::SectorPlacer;
placer->setCenter(osg::Vec3(0.0,0.0,0.0));
placer->setRadiusRange(0.0f,0.25f);
placer->setCenter(_position);
placer->setRadiusRange(0.0f*_scale,0.25f*_scale);
emitter->setPlacer(placer);
osgParticle::RadialShooter* shooter = new osgParticle::RadialShooter;
shooter->setThetaRange(0.0f, osg::PI_4);
shooter->setInitialSpeedRange(0.0f,0.0f);
shooter->setInitialSpeedRange(0.0f*_scale,0.0f*_scale);
emitter->setShooter(shooter);
emitter->setStartTime(0.0f);
emitter->setStartTime(_startTime);
_emitter = emitter;
}
@@ -108,31 +119,4 @@ void FireEffect::setDefaults()
// add the program to the scene graph
_program = program;
}
buildEffect();
}
void FireEffect::buildEffect()
{
// clear the children.
removeChild(0,getNumChildren());
if (!_emitter || !_particleSystem || !_program) return;
// add the emitter
addChild(_emitter.get());
// add the program to update the particles
addChild(_program.get());
// add the particle system updater.
osgParticle::ParticleSystemUpdater *psu = new osgParticle::ParticleSystemUpdater;
psu->addParticleSystem(_particleSystem.get());
addChild(psu);
// add the geode to the scene graph
osg::Geode *geode = new osg::Geode;
geode->addDrawable(_particleSystem.get());
addChild(geode);
}