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Fix particle emitter corner cases

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This commit is contained in:
David Rowe 2015-09-24 19:17:02 -07:00
parent 629128c17f
commit d233d3f81b
1 changed files with 6 additions and 6 deletions
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12
libraries/entities/src/ParticleEffectEntityItem.cpp
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@ -682,9 +682,9 @@ void ParticleEffectEntityItem::stepSimulation(float deltaTime) {
}
updateRadius(i, 0.0f);
// Velocity and acceleration
if (_polarStart == 0.0f && _polarFinish == 0.0f) {
// Emit along z-axis
// Position, velocity, and acceleration
if (_polarStart == 0.0f && _polarFinish == 0.0f && _emitDimensions.z == 0.0f) {
// Emit along z-axis from position
_particlePositions[i] = getPosition();
_particleVelocities[i] =
(_emitSpeed + (2.0f * randFloat() - 1.0f) * _speedSpread) * (_emitOrientation * Z_AXIS);
@ -730,9 +730,9 @@ void ParticleEffectEntityItem::stepSimulation(float deltaTime) {
float z = radiuses.z * glm::sin(elevation);
glm::vec3 emitPosition = glm::vec3(x, y, z);
emitDirection = glm::normalize(glm::vec3(
x / (radiuses.x * radiuses.x),
y / (radiuses.y * radiuses.y),
z / (radiuses.z * radiuses.z)
radiuses.x > 0.0f ? x / (radiuses.x * radiuses.x) : 0.0f,
radiuses.y > 0.0f ? y / (radiuses.y * radiuses.y) : 0.0f,
radiuses.z > 0.0f ? z / (radiuses.z * radiuses.z) : 0.0f
));
_particlePositions[i] = getPosition() + _emitOrientation * emitPosition;