noise force field

The noise field generates a noise to influence particles inside the Noise Field Source. 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 Noise field currently active?	True
attenuation	float	Attenuation is how much the effect of the field decays from the ‘center’ to the ‘boundary’ of the Noise Field Source.	1.0
considerVelocity	bool	Consider velocity of the particle when calculating noise.	False
frequency	float	Value changes position to increase or decrease the noise sample.	1.0
magnitude	float	The amount of force to apply to the particles through the noise.	1.0
octaves	int	The amount of times the noise is sampled.	5
pointcloudPoints	pointf[3][]	Input pointcloud points	[]
pointcloudNormals	normalf[3][]	Input pointcloud normals, one for each point	[]
pointcloudPointRadius	float	radius of points in cloud	1.0
particles	bundle	Input particle data, including position and impulse, and if considerVelocity is true, velocity.
$accelTree	bundle	Collision geometry acceleration structure
prim	bundle	Input geometry prims
primPath	path	Input geometry prim paths

Outputs

Name	Type	Description	Default
particles	bundle	Output particle data, including position and impulse.