ramp modulator

Ramp modulators allow a user to change particle attributes over time. 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 ramp modulator currently active?	True
mode	int	0 = override, 1 = additive, 2 = multiplicative	2
scalarAttributeName	token	Name of a scalar attribute to remap.
rampPositions	float[]	Point positons over the lifetime of the Particle from zero to one. Zero being the beginning of the life of the particle, and one being the end of the particle.	[]
rampValues	float[]	Float value per point.	[]
rampInterpolations	int[]	Point to point curve tpes. Linear is a creates a flat curve from point to point. Smooth creates an ease in or ease out curve from point to point.	[]
vectorAttributeName	token	Name of a vector attribute to remap.
ramp3fPositions	float[]	Point positons over the lifetime of the Particle from zero to one. Zero being the beginning of the life of the particle, and one being the end of the particle.	[]
ramp3fValues	float[3][]	three vector values per point.	[]
ramp3fInterpolations	int[]	Three vector Point to point curve tpes. Linear is a creates a flat curve from point to point. Smooth creates an ease in or ease out curve from point to point.	[]
particles	bundle	Input particle data

Outputs

Name	Type	Description	Default
particles	bundle	Output particle data