unreal.VectorNoiseFunction

class unreal.VectorNoiseFunction

Bases: EnumBase

EVector Noise Function

C++ Source:

  • Module: Engine

  • File: MaterialExpressionVectorNoise.h

VNF_CELLNOISE_ALU: VectorNoiseFunction

Random color for each unit cell in 3D space. RGB output range 0 to 1 R only = 9 instructions, RGB = 11 instructions

Type:

0

VNF_CURL_ALU: VectorNoiseFunction

Curl of Perlin noise, useful for 3D flow directions. RGB = signed curl vector ~162 instructions

Type:

3

VNF_GRADIENT_ALU: VectorNoiseFunction

Gradient of Perlin noise, useful for bumps. RGB = Gradient of scalar noise (signed 3D vector) A = Base scalar noise with range -1 to 1 A only = ~83 instructions, RGBA = ~106 instructions

Type:

2

VNF_VECTOR_ALU: VectorNoiseFunction

Perlin-style noise with 3D vector/color output. RGB output range -1 to 1 R only = ~83 instructions, RGB = ~125 instructions

Type:

1

VNF_VORONOI_ALU: VectorNoiseFunction

Also known as Worley or Cellular noise. RGB = position of closest point at center of Voronoi cell A = distance to closest point with range 0 to about 4 Quality levels 1-4 search 8, 16, 27 & 32 cells All ~20 instructions per cell searched

Type:

4