EvaluateFalloff

Brush strength factor at a normalised distance, 0 to 1.

Declaration

inline double EvaluateFalloff(EOrreryTerrainFalloff Falloff, double T, double Start = 0.0);

Header: #include "Tools/OrreryTerrainBrushFalloff.h"
Module: PublicDependencyModuleNames.Add("OrreryTerrain"); in your module’s Build.cs.
Stability: Stable: changes within a major version only add.
Thread: Tier 3 helper, any thread.

OrreryTerrain::Native::FalloffWeight, the curve the sculpt kernel evaluates in Q16 fixed point, for a Blueprint falloff. Tier 3 helper, any thread.

Name	Type	Default	Meaning
`Falloff`	`EOrreryTerrainFalloff`	—	The curve.
`T`	`double`	—	Distance from the brush centre over the radius; above 1 is outside the brush.
`Start`	`double`	`0.0`	Falloff start S in [0, 1): the inner radius fraction of full strength. t is remapped to max(0, (t-S)/(1-S)) before the curve (`FOrreryTerrainBrushBP::FalloffStart`).

Strength factor in [0, 1]; 0 outside the brush.