public void initParticleLocation(int index) {
Particle p = particles[index];
if (particleType == ParticleType.GeomMesh) {
// Update the triangle model on each new particle creation.
Vector3f[] vertices = new Vector3f[3];
((TriMesh) psGeom).getTriangle(index, vertices);
Triangle t = p.getTriangleModel();
if (t == null) t = new Triangle(vertices[0], vertices[1], vertices[2]);
else for (int x = 0; x < 3; x++) t.set(x, vertices[x]);
t.calculateCenter();
t.calculateNormal();
// turn the triangle corners into vector offsets from center
for (int x = 0; x < 3; x++) {
vertices[x].subtract(t.getCenter(), vertices[x]);
t.set(x, vertices[x]);
}
p.setTriangleModel(t);
psGeom.localToWorld(t.getCenter(), p.getPosition());
p.getPosition().multLocal(getInvScale());
} else if (getEmitType() == EmitType.Geometry) {
if (getGeometry() != null && getGeometry() instanceof TriMesh)
((TriMesh) getGeometry()).randomPointOnTriangles(p.getPosition(), workVect3);
else if (getGeometry() != null) getGeometry().randomVertex(p.getPosition());
p.getPosition().multLocal(getInvScale());
} else {
switch (getEmitType()) {
case Line:
getLine().random(p.getPosition());
break;
case Rectangle:
getRectangle().random(p.getPosition());
break;
case Ring:
getRing().random(p.getPosition());
break;
case Point:
default:
p.getPosition().set(originOffset);
break;
}
emitterTransform.multPoint(p.getPosition());
}
}
