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Heightfield Slump

fields/heightfield-slump·v1.5.1

IN:1 OUT:1

SUMMARY

Heightfield Slump moves material from every sample to its lower neighbors wherever the slope is steeper than the Repose Angle, preserving the total height. Repeated over Iterations, steep peaks and cliffs collapse into natural talus slopes.

Spread Rate sets how much excess material moves per iteration, and Debris Layer records where the material came to rest, ready for shading or scattering. The falloff acts as the erodability, so areas with a falloff of 0 behave as rock that does not move.

PARAMETERS

PAGESlump

Repose Angle	Reposeangle	Slopes steeper than this angle (degrees) shed material downhill: about 30 to 40 for loose dirt, low values behave like sand.
Iterations	Iterations	How many times material is moved per cook: more iterations let slopes settle further.
Spread Rate	Spreadrate	The part of the excess material moved per iteration. 1 is the fastest stable rate.
Debris Layer	Debrislayer	When set, writes the material that came to rest on each sample (world units) into this layer.
Do Falloff	Dofalloff	Weight the effect on each point by the Falloff Attribute. The falloff is the erodability, 0 is rock that does not move.
Falloff Attribute	Falloffattr	The point attribute, 0 to 1, that weights the effect.
Invert Falloff	Invertfalloff	Uses one minus the falloff attribute.
Falloff Strength	Falloffstrength	Scales the effect of the falloff attribute.
[+]Border	Border	Determines how the edges behave. Streak keeps material inside, Constant is a fixed outside height (Border Value) that takes material, Repeat wraps around.
Border Value	Bordervalue	The height read outside the height field when Border is Constant.

PAGECommon

Bypass	Bypass	Pass through the first input to the output unchanged.
Free Extra GPU Memory	Freeextragpumem	Free memory that has accumulated when output memory has grown and shrunk.

INPUTS

Input 0 POP - Heightfield

OUTPUTS

Output 0 POP - Heightfield