Noise and Turbulence

This module can be used to generate noise of various types. This can be used for terrain generation, to create textures, make animations more 'animated', object deformation, etc. As an example, this code segment when scriptlinked to a framechanged event, will make the camera sway randomly about, by changing parameters this can look like anything from an earthquake to a very nervous or maybe even drunk cameraman... (the camera needs an ipo with at least one Loc & Rot key for this to work!):

Example:

 from Blender import Get, Scene, Noise
 ####################################################
 # This controls jitter speed
 sl = 0.025
 # This controls the amount of position jitter
 sp = 0.1
 # This controls the amount of rotation jitter
 sr = 0.25
 ####################################################

 time = Get('curtime')
 ob = Scene.GetCurrent().getCurrentCamera()
 ps = (sl*time, sl*time, sl*time)
 # To add jitter only when the camera moves, use this next line instead
 #ps = (sl*ob.LocX, sl*ob.LocY, sl*ob.LocZ)
 rv = Noise.vTurbulence(ps, 3, 0, Noise.NoiseTypes.NEWPERLIN)
 ob.dloc = (sp*rv[0], sp*rv[1], sp*rv[2])
 ob.drot = (sr*rv[0], sr*rv[1], sr*rv[2])

Functions

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float

random()
Returns a random floating point number."

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3-float list

randuvec()
Returns a random unit vector.

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setRandomSeed(seed)
Initializes the random number generator.

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float

noise(xyz, type=1)
Returns general noise of the optional specified type.

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3-float list

vNoise(xyz, type=1)
Returns noise vector of the optional specified type.

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float

turbulence(xyz, octaves, hard, basis=1, ampscale=0.5, freqscale=2.0)
Returns general turbulence value using the optional specified noise 'basis' function.

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3-float list

vTurbulence(xyz, octaves, hard, basis=1, ampscale=0.5, freqscale=2.0)
Returns general turbulence vector using the optional specified noise basis function.

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float

fBm(xyz, H, lacunarity, octaves, basis=1)
Returns Fractal Brownian Motion noise value (fBm).

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float

multiFractal(xyz, H, lacunarity, octaves, basis=1)
Returns Multifractal noise value.

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float

vlNoise(xyz, distortion, type1=1, type2=1)
Returns Variable Lacunarity Noise value, a distorted variety of noise.

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float

heteroTerrain(xyz, H, lacunarity, octaves, offset, basis=1)
Returns Heterogeneous Terrain value.

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float

hybridMFractal(xyz, H, lacunarity, octaves, offset, gain, basis=1)
Returns Hybrid Multifractal value.

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float

ridgedMFractal(xyz, H, lacunarity, octaves, offset, gain, basis=1)
Returns Ridged Multifractal value.

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list

voronoi(xyz, distance_metric=0, exponent=2.5)
Returns Voronoi diagrams-related data.

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float

cellNoise(xyz)
Returns cellnoise.

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3-float list

cellNoiseV(xyz)
Returns cellnoise vector/point/color.

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Variables

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readonly dictionary NoiseTypes = {'BLENDER': 0, 'STDPERLIN': 1}
The available noise types.

readonly dictionary DistanceMetrics = {'DISTANCE': 0}
The available distance metrics values for Voronoi.

Function Details