FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Ben van Basten, "1 Bug fix in reuseParticle where originally an old particle that was already killed would be killed again, but instead should have been placed on the dead stack for future reuse.

Browse Source 
2 Getter/setter for _maxNumberOfParticlesToSkip that is used for filtering of particles during draw. This enables you to turn the filtering of by setting this value to zero.

3 Getter for retrieval of the first particle in the trail. This allows you to directly manipulate the trail from your application by walking from the start particle towards the end of the trail."

Submitted on Ben's behalf by Roland Smeenk.
This commit is contained in:
Robert Osfield
2006-11-07 13:48:20 +00:00
parent c9fed221a5
commit 5ac6ea9a8d
2 changed files with 40 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/osgParticle/ConnectedParticleSystem.cpp
View File

@@ -20,14 +20,16 @@ using namespace osgParticle;
ConnectedParticleSystem::ConnectedParticleSystem():
_startParticle(Particle::INVALID_INDEX),
_lastParticleCreated(Particle::INVALID_INDEX)
_lastParticleCreated(Particle::INVALID_INDEX),
_maxNumberOfParticlesToSkip(200)
{
}
ConnectedParticleSystem::ConnectedParticleSystem(const ConnectedParticleSystem& copy, const osg::CopyOp& copyop):
ParticleSystem(copy,copyop),
_startParticle(copy._startParticle),
_lastParticleCreated(copy._lastParticleCreated)
_lastParticleCreated(copy._lastParticleCreated),
_maxNumberOfParticlesToSkip(200)
{
}
@@ -105,8 +107,9 @@ void ConnectedParticleSystem::reuseParticle(int particleIndex)
particle->setPreviousParticle(Particle::INVALID_INDEX);
particle->setNextParticle(Particle::INVALID_INDEX);
// do the actual destroy of the particle
ParticleSystem::destroyParticle(particleIndex);
// put the particle on the death stack
ParticleSystem::reuseParticle(particleIndex);
}
void ConnectedParticleSystem::drawImplementation(osg::State& state) const
@@ -119,7 +122,7 @@ void ConnectedParticleSystem::drawImplementation(osg::State& state) const
float pixelSizeOfFirstParticle = unitPixelSize * particle->getCurrentSize();
//float desiredGapBetweenDrawnParticles = 50.0f/unitPixelSize;
//float desiredGapBetweenDrawnParticles2 = desiredGapBetweenDrawnParticles*desiredGapBetweenDrawnParticles;
unsigned int maxNumParticlesToSkip = 200;
float maxPixelError2 = osg::square(1.0f/unitPixelSize);
if (pixelSizeOfFirstParticle<1.0)
@@ -145,7 +148,7 @@ void ConnectedParticleSystem::drawImplementation(osg::State& state) const
// now skip particles of required
for(unsigned int i=0;
i<maxNumParticlesToSkip && ((distance2<maxPixelError2) && (nextParticle->getNextParticle()!=Particle::INVALID_INDEX));
i<_maxNumberOfParticlesToSkip && ((distance2<maxPixelError2) && (nextParticle->getNextParticle()!=Particle::INVALID_INDEX));
++i)
{
nextParticle = &_particles[nextParticle->getNextParticle()];
@@ -185,7 +188,7 @@ void ConnectedParticleSystem::drawImplementation(osg::State& state) const
// now skip particles of required
for(unsigned int i=0;
i<maxNumParticlesToSkip && ((distance2<maxPixelError2) && (nextParticle->getNextParticle()!=Particle::INVALID_INDEX));
i<_maxNumberOfParticlesToSkip && ((distance2<maxPixelError2) && (nextParticle->getNextParticle()!=Particle::INVALID_INDEX));
++i)
{
nextParticle = &_particles[nextParticle->getNextParticle()];
@@ -216,5 +219,7 @@ void ConnectedParticleSystem::drawImplementation(osg::State& state) const
}
glEnd();
}
}