blendShape

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Synopsis

blendShape [-after] [-afterReference] [-before] [-deformerTools] [-envelope float] [-exclusive string] [-frontOfChain] [-geometry string] [-geometryIndices] [-ignoreSelected] [-inBetween] [-name string] [-normalizationGroups] [-origin string] [-parallel] [-prune] [-remove] [-split] [-target string uint string float] [-topologyCheck boolean] [-weight uint float] [-weightCount uint] [objects]

blendShape is undoable, queryable, and editable.

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 ...
-geometryIndices(-gi)
Complements the -geometry flag in query mode. Returns the multi index of each geometry.
-remove(-rm)
Specifies that objects listed after the -g flag should be removed from this deformer.
-before(-bf)
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. Works in create mode (and edit mode if the deformer has no geometry added yet).
-after(-af)
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. Works in create mode (and edit mode if the deformer has no geometry added yet).
-afterReference(-ar)
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 -after mode is used in adding the new deformer otherwise -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.
-split(-sp)
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).
-frontOfChain(-foc)
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).
-parallel(-par)
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).
-ignoreSelected(-is)
Tells the command to not deform objects on the current selection list
-deformerTools(-dt)
Returns the name of the deformer tool objects (if any) as string string ...
-prune(-pr)
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)
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.
-normalizationGroups(-ng)
Returns a list of the used normalization group IDs.

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 be used more than once in a command.

MEL examples

//
// 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.
//
blendShape;

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

blendShape curve1 curve2 curve3;

//
// Apply 80% of the total blendShape deformation, by setting
// the envelope parameter to 0.8
blendShape -edit -en 0.8 blendShape1;

//
// Set the weights for the first two target shapes to 0.6
// and 0.1 respectively
blendShape -edit -w 0 0.6 -w 1 0.1 blendShape1;

//
// Add a third target (target1) to the blendShape on curve3
blendShape -edit -t curve3 2 target1 1.0 blendShape1;

//
// Add "smirk", an inbetween on the third target for base
// shape curve3. The inbetween will take effect at a weight of 0.2
blendShape -edit -ib -t curve3 2 smirk 0.2 blendShape1;