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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57
src/osgParticle/SmokeEffect.cpp
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@@ -13,8 +13,6 @@
#include <osgParticle/SmokeEffect>
#include <osgParticle/ModularEmitter>
#include <osgParticle/ModularProgram>
#include <osgParticle/RandomRateCounter>
#include <osgParticle/RadialShooter>
#include <osgParticle/AccelOperator>
@@ -26,9 +24,15 @@
using namespace osgParticle;
SmokeEffect::SmokeEffect()
SmokeEffect::SmokeEffect(const osg::Vec3& position, float scale, float intensity)
{
setDefaults();
_position = position;
_scale = scale;
_intensity = intensity;
buildEffect();
}
SmokeEffect::SmokeEffect(const SmokeEffect& copy, const osg::CopyOp& copyop):
@@ -37,6 +41,11 @@ SmokeEffect::SmokeEffect(const SmokeEffect& copy, const osg::CopyOp& copyop):
}
void SmokeEffect::setDefaults()
{
ParticleEffect::setDefaults();
}
void SmokeEffect::setUpEmitterAndProgram()
{
osgParticle::ParticleSystem *ps = new osgParticle::ParticleSystem;
@@ -54,35 +63,35 @@ void SmokeEffect::setDefaults()
osgParticle::Particle ptemplate;
ptemplate.setLifeTime(10); // 3 seconds of life
ptemplate.setLifeTime(10*_scale);
// the following ranges set the envelope of the respective
// graphical properties in time.
ptemplate.setSizeRange(osgParticle::rangef(0.75f, 3.0f));
ptemplate.setAlphaRange(osgParticle::rangef(0.0f, 1.0f));
ptemplate.setAlphaRange(osgParticle::rangef(0.1f, 1.0f));
ptemplate.setColorRange(osgParticle::rangev4(
osg::Vec4(1, 1.0f, 1.0f, 1.0f),
osg::Vec4(1, 1.0f, 1.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(1,2); // generate 1000 particles per second
counter->setRateRange(1*_intensity*_scale,2*_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,0.5f);
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);
@@ -108,30 +117,4 @@ void SmokeEffect::setDefaults()
_program = program;
}
buildEffect();
}
void SmokeEffect::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);
}