blendShape

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Synopsis

blendShape( [objects] , [after=boolean], [before=boolean], [deformerTools=boolean], [envelope=float], [exclusive=string], [frontOfChain=boolean], [geometry=string], [ignoreSelected=boolean], [inBetween=boolean], [name=string], [origin=string], [parallel=boolean], [prune=boolean], [remove=boolean], [split=boolean], [target=[string, uint, string, float]], [topologyCheck=boolean], [weight=[uint, float]], [weightCount=uint])

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

blendShape is undoable, queryable, and editable.

In the create mode the first item on the selection list is treated as the base and the remaining inputs as targets. If the first item on the list has multiple shapes grouped beneath it, the targets must have an identical shape hierarchy. Additional base shapes can be added in edit mode using the deformers -g flag.

Return value

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

Related

Flags

Long name (short name)	Argument types	Properties
name(n)	string
Used to specify the name of the node being created
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 ...
remove(rm)	boolean
Specifies that objects listed after the -g flag should be removed from this deformer.
before(bf)	boolean
If the default behavior for insertion/appending into/onto the existing chain is not what you want then you can use this flag to force the command to stick 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
after(af)	boolean
If the default behavior for insertion/appending into/onto the existing chain is not what you want then you can use this flag to force the command to stick 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
split(sp)	boolean
Branches off a new chain in the dependency graph instead of inserting/appending the deformer into/onto an existing chain.
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.
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.
ignoreSelected(ignoreSelected)	boolean
Tells the command to not deform objects on the current selection list
deformerTools(dt)	boolean
Returns the name of the deformer tool objects (if any) as string string ...
prune(pr)	boolean
Removes any points not being deformed by the deformer in its current configuration from the deformer set.
exclusive(ex)	string
Puts the deformation set in a deform partition.
envelope(en)	float
Set the envelope value for the deformer, controlling how much of the total deformation gets applied. Default is 1.0.
target(t)	[string, uint, string, float]
Set target object as the index target shape for the base shape base object. The full influence of target shape takes effect when its shape weight is targetValue. Parameter list: string: the base object int: index string: the target object double: target value
inBetween(ib)	boolean
Indicate that the specified target should serve as an inbetween. An inbetween target is one that serves as an intermediate target between the base shape and another target.
topologyCheck(tc)	boolean
Set the state of checking for a topology match between the shapes being blended. Default is on.
weight(w)	[uint, float]
Set the weight value (second parameter) at index (first parameter).
weightCount(wc)	uint
Set the number of shape weight values.
origin(o)	string
blendShape will be performed with respect to the world by default. Valid values are "world" and "local". The local flag will cause the blend shape to be performed with respect to the shape's local origin.

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

#
# Perform a blendShape using the currently-selected objects.
# The lead (last-selected) object will be the base shape, and each
# of the others become targets.
#
cmds.blendShape()

#
# Create a blendShape that starts with curve3 as the base, and blends
# in curve1 and curve2 as targets.

cmds.blendShape( 'curve1', 'curve2', 'curve3' )

#
# Apply 80% of the total blendShape deformation, by setting
# the envelope parameter to 0.8
cmds.blendShape( 'blendShape1', edit=True, en=0.8 )


#
# Set the weights for the first two target shapes to 0.6
# and 0.1 respecxtively
cmds.blendShape( 'blendShape1', edit=True, w=[(0, 0.6), (1, 0.1)] )

#
# Add a third target (target3) to the blendShape on curve3
cmds.blendShape( 'blendShape1', edit=True, t=('curve3', 1, 'target3', 1.0) )

#
# Add an inbetween (smirk) on target3 for base shape curve3
# The inbetween will take effect at a weight of 0.2
cmds.blendShape( 'blendShape2', edit=True, ib=True, t=('curve3', 2, 'smirk', 0.2) )