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turbulence( selectionList , [attenuation=float], [frequency=float], [magnitude=float], [maxDistance=linear], [name=string], [noiseLevel=int], [noiseRatio=float], [perVertex=boolean], [phase=float], [phaseX=float], [phaseY=float], [phaseZ=float], [position=[linear, linear, linear]])

Note: Strings representing object names and arguments must be separated by commas. This is not depicted in the synopsis.

turbulence is undoable, queryable, and editable.

A turbulence field causes irregularities (also called 'noise' or 'jitter') in the motion of affected objects.

Use connectDynamic to cause the field to affect a dynamic object.

If fields are created, this command returns the names of each of the fields. If a field was queried, the results of the query are returned. If a field was edited, the field name is returned.

If object names are provided or the active selection list is non-empty, the command creates a field for every object in the list and calls addDynamic to add it to the object. If the list is empty, the command defaults to -pos 0 0 0.

Setting the -pos flag with objects named on the command line is an error.

Return value


In query mode, return type is based on queried flag.


attenuation, frequency, magnitude, maxDistance, name, noiseLevel, noiseRatio, perVertex, phase, phaseX, phaseY, phaseZ, position
Long name (short name) Argument types Properties
position(pos) [linear, linear, linear] queryeditmultiuse
Position in space where you want to place a field. The field then emanates from this position in space rather than from an object. Note that you can both use -pos (creating a field at a position) and also provide object names.
magnitude(m) float queryedit
Strength of field. As this increases, the affected objects will move faster.
attenuation(att) float queryedit
Attentuation rate of field
maxDistance(mxd) linear queryedit
Maximum distance at which field is exerted.
name(n) string queryedit
name of field
perVertex(pv) boolean queryedit
Per-vertex application. If this flag is set true, then each individual point (CV, particle, vertex,etc.) of the chosen object exerts an identical copy of the force field. If this flag is set to false, then the force is exerted only from the geometric center of the set of points.
frequency(f) float queryedit
Frequency of turbulence field. This determines how often motion is disrupted.
phase(p) float queryedit
Phase shift of turbulence field. This influences the direction of the disruption. This flag is obsolete and is retained only for backward compatibility. It is replaced by -phaseX, -phaseY, and -phaseZ. Setting -phase is identical to setting -phaseZ (the phase shift was always in the Z dimension).
phaseX(px) float queryedit
X component of phase shift of turbulence field. This influences the direction of the disruption.
phaseY(py) float queryedit
Y component of phase shift of turbulence field. This influences the direction of the disruption.
phaseZ(pz) float queryedit
Z component of phase shift of turbulence field. This influences the direction of the disruption.
noiseLevel(nsl) int queryedit
If the noiseLevel parameter is greater than zero, the field will do multiple lookups in the table. Each additional lookup is weighted using noiseRatio (which see). The noiseLevel is the number of additional lookups, so if noiseLevel is 0, there is just one lookup. A value of 0 (the default) corresponds to the way the field behaved prior to Maya 3.0.
noiseRatio(nsr) float queryedit
If noiseLevel is greater than zero, then noiseRatio is the relative magnitude for each consecutive noise evaluation. These are cumulative: for example, if noiseRatio is 0.5, then the first evaluation is weighted 0.5, the second 0.25, and so on. Has no effect if noiseLevel is zero.

Flag can appear in Create mode of command Flag can appear in Edit mode of command
Flag can appear in Query mode of command Flag can have multiple arguments, passed either as a tuple or a list.

Python examples

import maya.cmds as cmds

# Creates a new field
cmds.turbulence( n='turbulenceF', m=5.0, pos=(0.25, 0, 0) )

# Edits the frequency value of the field named turbulenceF
cmds.turbulence( 'turbulenceF', e=True, f=0.5 )

# Queries turbulenceF for its frequency value
cmds.turbulence( 'turbulenceF', q=True, f=1 )