solver

The solver node implements numerical integration of the underlying particles data at each simulation step. 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 Solver node currently active?	True
playbackEvaluation	bool	Simulate in runtime or animation playback mode.	False
playbackStartFrame	int	The start frame of the simulation when in animation playback mode.	0
playbackEndFrame	int	The end frame of the simulation when in animation playback mode, or negative if no end frame.	-1
aimInheritsVelocity	bool	Aim parameters inherit the velocity of the particle.	True
energyConservation	float	Values less than 1.0 exponentially dampen velocities to this portion in one second, for example, in the absence of impulses, a value of 0.8 will reduce velocities by 20% every second.	1.0
maxCount	int	The Maximum amount of particles to spawn per cycle. -1 is no maximum.	-1
outputToLocal	bool	If this is on, the particle data are written to outputs:particles.	True
particles	bundle	Input particle data

Outputs

Name	Type	Description	Default
particles	bundle	Output particle data