terrainNoiseField

Keywords:

• fbm
• landscape

Coordinate Field

Fractal Increment Field

Lacunarity Field

Frequency Field

Octaves Field

Step Offset Field

Gain Field

field

terrainNoiseField

RayTK

v0.42

Noise that uses fBm (fractal brownian motion), which can work well for surface offsetting for terrain.

Based on Musgrave’s Noises Collection by xbe.

See also http://www.classes.cs.uchicago.edu/archive/2014/winter/23700-1/project_4_and_5/MusgraveTerrain00.pdf.

Parameters

Name	Description	Regular Handling	Read-Only Handling
Noise Type		Baked	Baked
fBm: Multi Fractal: Heterogeneous Terrain: Hybrid Multi Fractal: Ridged Multi Fractal:
Axis	When the Noisetype uses 2D coordinates but Coordtype is 3D, this is used to choose which plane of the coordinates are used.	Runtime	Semi-Baked
X: Y: Z:
Translate		Runtime	Baked
Scale		Runtime	Baked
Fractal Increment
Lacunarity	Gap between successive frequencies.
Frequency	Density of the pattern (basically another Scale).
Octaves	Number of layers of detail (frequencies used in the fBm). Larger values produce more detail. Avoid values below 1.
Step Offset
Gain
Amplitude	Multiplies the amount produced by the noise.	Runtime	Baked
Offset	Offsets (adds to) the amount produced by the noise.	Runtime	Baked

Inputs

• Coordinate Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4
• Fractal Increment Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4
  • Supports Variables From Inputs: coordField
• Lacunarity Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4
• Frequency Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4
• Octaves Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4
• Step Offset Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4
• Gain Field: (optional)
  • Coordinate Types: float vec2 vec3 vec4
  • Context Types: Context MaterialContext CameraContext LightContext RayContext ParticleContext VertexContext PixelContext
  • Return Types: float vec4