cluster

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Synopsis

cluster( [objects] , [after=boolean], [afterReference=boolean], [before=boolean], [bindState=boolean], [components=boolean], [deformerTools=boolean], [envelope=float], [exclusive=string], [frontOfChain=boolean], [geometry=string], [geometryIndices=boolean], [ignoreSelected=boolean], [includeHiddenSelections=boolean], [name=string], [parallel=boolean], [prune=boolean], [relative=boolean], [remove=boolean], [resetGeometry=boolean], [selectedComponents=boolean], [split=boolean], [useComponentTags=boolean], [weightedNode=[string, string]])

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

cluster is undoable, queryable, and editable.

After creating a cluster, the cluster's weights can be modified using the percent command or the set editor window.

Return value

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

Related

Flags

Long name (short name)	Argument types	Properties
after(af)	boolean
If the default behavior for insertion/appending into/onto the existing chain is not the desired behavior then this flag can be used to force the command to place the deformer node after the selected node in the chain even if a new geometry shape has to be created in order to do so. Works in create mode (and edit mode if the deformer has no geometry added yet).
afterReference(ar)	boolean
The -afterReference flag is used to specify deformer ordering in a hybrid way that choses between -before and -after automatically. If the geometry being deformed is referenced then the -after mode is used when adding the new deformer, otherwise the -before mode is used. The net effect when using -afterReference to build deformer chains is that internal shape nodes in the deformer chain will only appear at reference file boundaries, leading to lightweight deformer networks that may be more amicable to reference swapping.
before(bf)	boolean
If the default behavior for insertion/appending into/onto the existing chain is not the desired behavior then this flag can be used to force the command to place the deformer node before the selected node in the chain even if a new geometry shape has to be created in order to do so. Works in create mode (and edit mode if the deformer has no geometry added yet).
bindState(bs)	boolean
When turned on, this flag adds in a compensation to ensure the clustered objects preserve their spatial position when clustered. This is required to prevent the geometry from jumping at the time the cluster is created in situations when the cluster transforms at cluster time are not identity.
components(cmp)	boolean
Returns the components used by the deformer
deformerTools(dt)	boolean
Returns the name of the deformer tool objects (if any) as string string ...
envelope(en)	float
Set the envelope value for the deformer. Default is 1.0
exclusive(ex)	string
Puts the deformation set in a deform partition.
frontOfChain(foc)	boolean
This command is used to specify that the new deformer node should be placed ahead (upstream) of existing deformer and skin nodes in the shape's history (but not ahead of existing tweak nodes). The input to the deformer will be the upstream shape rather than the visible downstream shape, so the behavior of this flag is the most intuitive if the downstream deformers are in their reset (hasNoEffect) position when the new deformer is added. Works in create mode (and edit mode if the deformer has no geometry added yet).
geometry(g)	string
The specified object will be added to the list of objects being deformed by this deformer object, unless the -rm flag is also specified. When queried, this flag returns string string string ...
geometryIndices(gi)	boolean
Complements the -geometry flag in query mode. Returns the multi index of each geometry.
ignoreSelected(ignoreSelected)	boolean
Tells the command to not deform objects on the current selection list
includeHiddenSelections(ihs)	boolean
Apply the deformer to any visible and hidden objects in the selection list. Default is false.
name(n)	string
Used to specify the name of the node being created.
parallel(par)	boolean
Inserts the new deformer in a parallel chain to any existing deformers in the history of the object. A blendShape is inserted to blend the parallel results together. Works in create mode (and edit mode if the deformer has no geometry added yet).
prune(pr)	boolean
Removes any points not being deformed by the deformer in its current configuration from the deformer set.
relative(rel)	boolean
Enable relative mode for the cluster. In relative mode, Only the transformations directly above the cluster are used by the cluster. Default is off.
remove(rm)	boolean
Specifies that objects listed after the -g flag should be removed from this deformer.
resetGeometry(rg)	boolean
Reset the geometry matrices for the objects being deformed by the cluster. This flag is used to get rid of undesirable effects that happen if you scale an object that is deformed by a cluster.
selectedComponents(cms)	boolean
Returns the components used by the deformer that are currently selected. This intersects the current selection with the components affected by the deformer.
split(sp)	boolean
Branches off a new chain in the dependency graph instead of inserting/appending the deformer into/onto an existing chain. Works in create mode (and edit mode if the deformer has no geometry added yet).
useComponentTags(uct)	boolean
When this flag is specified a setup using componentTags will be created. This means no groupId, groupParts, tweak or objectSet nodes will be created and connected to the new deformer.
weightedNode(wn)	[string, string]
Transform node in the DAG above the cluster to which all percents are applied. The second DAGobject specifies the descendent of the first DAGobject from where the transformation matrix is evaluated. Default is the cluster handle.

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

# Create a cluster which uses the transformation of elbow1
#
cmds.joint(p=(2,0,0),name="elbow1")
cmds.joint(p=(4,0,0),name="wrist1")

cmds.sphere()
cmds.cluster( wn=('elbow1', 'elbow1') )

# Edit cluster1 to use the transformation of wrist1.
#
cmds.cluster( 'cluster1', e=True, bs=1, wn=('wrist1', 'wrist1') )

# Create a relative cluster with its own cluster handle. The
# cluster handle is drawn as the letter "C".
#
cmds.cluster( rel=True )

# Modify the membership of an existing cluster. First, find
# the name of the cluster's associated set, then use the sets
# command to edit the set membership (add a cube and remove a plane).
#
cmds.listConnections( 'cluster1', type="objectSet" )
# Result: cluster1Set
cmds.sets( 'pCube1', add='cluster1Set' )
cmds.sets( 'pPlane1', rm='cluster1Set' )