//-----------------------------------------------------------------------
void ParticleEmitter::_initParticleDimensions(Particle* particle)
{
if (particle->particleType != Particle::PT_VISUAL)
return;
// Only continue if one of them is set
VisualParticle* visualParticle = static_cast<VisualParticle*>(particle);
if (mDynParticleAllDimensionsSet || mDynParticleWidthSet || mDynParticleHeightSet || mDynParticleDepthSet)
{
// Set all dimensions equal ...
Real extend = 0;
if (mDynParticleAllDimensionsSet && mDynParticleAllDimensions)
{
extend = mDynamicAttributeHelper.calculate(mDynParticleAllDimensions, mParentTechnique->getParentSystem()->getTimeElapsedSinceStart());
visualParticle->setOwnDimensions(_mEmitterScale.x * extend, _mEmitterScale.y * extend, _mEmitterScale.z * extend);
return;
}
// ... or set the dimensions independent from each other
Real width = 0;
Real height = 0;
Real depth = 0;
if (mDynParticleWidthSet && mDynParticleWidth)
{
width = mDynamicAttributeHelper.calculate(mDynParticleWidth, mParentTechnique->getParentSystem()->getTimeElapsedSinceStart());
}
if (mDynParticleHeightSet && mDynParticleHeight)
{
height = mDynamicAttributeHelper.calculate(mDynParticleHeight, mParentTechnique->getParentSystem()->getTimeElapsedSinceStart());
}
if (mDynParticleDepthSet && mDynParticleDepth)
{
depth = mDynamicAttributeHelper.calculate(mDynParticleDepth, mParentTechnique->getParentSystem()->getTimeElapsedSinceStart());
}
/** Set the width, height and depth if at least one of them is set.
@remarks
If one of the dimensions is 0, it will be overridden by the default value later on.
*/
if (mDynParticleWidthSet || mDynParticleHeightSet || mDynParticleDepthSet)
{
visualParticle->setOwnDimensions(_mEmitterScale.x * width, _mEmitterScale.y * height, _mEmitterScale.z * depth);
}
}
else
{
// Just set the width, height and depth, but these are just the default settings; the particle doesn't
// have own dimensions. Recalculate the bounding sphere radius.
visualParticle->width = _mEmitterScale.x * mParentTechnique->getDefaultWidth();
visualParticle->height = _mEmitterScale.y * mParentTechnique->getDefaultHeight();
visualParticle->depth = _mEmitterScale.z * mParentTechnique->getDefaultDepth();
visualParticle->_calculateBoundingSphereRadius();
}
}
//-----------------------------------------------------------------------
void ParticlePool::_increaseVisualParticlePool(size_t size,
Particle::ParticleBehaviourList& behaviours)
{
size_t oldSize = mVisualParticles.size();
if (size < oldSize)
return;
// Create new visual particles
VisualParticle* particle = 0;
for (size_t i = oldSize; i < size; i++)
{
particle = PU_NEW_T(VisualParticle, MEMCATEGORY_SCENE_OBJECTS)();
particle->copyBehaviours(behaviours);
mVisualParticlesPool.addElement(particle);
mVisualParticles.push_back(particle);
}
}
//-----------------------------------------------------------------------
void AlignAffector::_affect(ParticleTechnique* particleTechnique, Particle* particle, Real timeElapsed)
{
if (particle->particleType == Particle::PT_VISUAL)
{
// Set the orientation towards the previous particle, but rotation is undetermined.
VisualParticle* visualParticle = static_cast<VisualParticle*>(particle);
// Get difference
Vector3 diff = (mPreviousParticle->position - particle->position);
if (mResize)
{
visualParticle->setOwnDimensions (visualParticle->width, diff.length(), visualParticle->depth);
}
diff.normalise();
visualParticle->orientation.x = diff.x;
visualParticle->orientation.y = diff.y;
visualParticle->orientation.z = diff.z;
}
mPreviousParticle = particle;
}
