collider

This resolves collisions of particles with collision geometry or other particles. Any collision geometry uses an acceleration structure received from a ‘Build Triangle Mesh Acceleration Tree’ node ATTENTION!: omni.particle.system.core is currently undergoing extensive (breaking) changes. Please be aware that systems built with the existing extension will need to be rebuilt in the USD Composer 2023.2 release.

Installation

To use this Node, you must enable omni.particle.system.core in the Extension Manager.

Inputs

Name	Type	Description	Default
active	bool	Is the Collider node currently active?	True
collisions	bool	If this is true, particles will collide against any collision geometry, else collision geometry will be ignored.	True
selfCollisions	bool	If this is true, particles will collide against each other, else particles will pass through each other.	True
dieOnCollision	bool	If this is true, particles will die upon colliding with collision geometry.	False
dieOnSelfCollision	bool	If this is true, particles will die upon colliding with other particles.	False
radiusInfluencesMass	float	If this value is strictly greater than zero, the mass of each particle will be treated as its mass from ‘massPP’ times its radius from ‘radiusPP’ times this value.	0.0
bounce	float	The portion of particle velocity normal to the surface preserved on bounces.	0.5
friction	float	The portion of particle velocity tangent to the surface preserved on bounces.	0.5
particles	bundle	Input particle data, including position, velocity, lifespan, mass, and radius.
$accelTree	bundle	Collision geometry acceleration structure
collisionPrims	bundle	Collision geometry prims
collisionPrimPath	path	Input geometry prim paths

Outputs

Name	Type	Description	Default
particles	bundle	Output particle data, including position, velocity, lifespan, mass, and radius.