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pointCurveConstraint( selectionItem , [caching=boolean], [constructionHistory=boolean], [name=string], [nodeState=int], [object=boolean], [pointConstraintUVW=[float, float, float]], [pointWeight=float], [position=[float, float, float]], [replaceOriginal=boolean], [weight=float])

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

pointCurveConstraint is undoable, queryable, and editable.

The command enables direct manipulation of a NURBS curve. It does so by apply a position constraint at the specified parameter location on the NURBS curve.

If construction history for the cmd is enabled, a locator is created to enable subsequent interactive manipulation of the curve. The locator position may be key framed or transformed and the "curve1" will try to match the position of the locator.

The argument is a curve location

Return value

string[]Object Name(s), node name.

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


caching, constructionHistory, name, nodeState, object, pointConstraintUVW, pointWeight, position, replaceOriginal, weight
Long name (short name) Argument types Properties
pointConstraintUVW(puv) [float, float, float] createqueryedit
Point constraint parameter space location on input NURBS Object
pointWeight(pw) float createqueryedit
Point constraint weight. Determines how strong an influence the constraint has on the input NURBS object.
Default: 1.0
Advanced flags
caching(cch) boolean createqueryedit
Modifies the node caching mode. See the node documentation for more information.
Note: For advanced users only.
nodeState(nds) int createqueryedit
Modifies the node state. See the node documentation for more information.
Note: For advanced users only.
position(p) [float, float, float] create
The new desired position in space for the nurbs object at the specified parameter space component. If not specified, the position is taken to be the one evaluated at the parameter space component on the nurbs object.
weight(w) float create
weight of the lsq constraint. The larger the weight, the least squares constraint is strictly met.
Common flags
name(n) string create
Sets the name of the newly-created node. If it contains namespace path, the new node will be created under the specified namespace; if the namespace does not exist, it will be created.
constructionHistory(ch) boolean create
Turn the construction history on or off
object(o) boolean create
Create the result, or just the dependency node
replaceOriginal(rpo) boolean create
Create "in place" (i.e., replace)

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

# Apply a constraint to manipulate the  position corresponding to
# the 1st edit point on curve1.
cmds.pointCurveConstraint( 'curve1.ep[1]', ch=True )

# Apply a constraint to manipulate the end point on curve1.
cmds.pointCurveConstraint( 'curve1.un[1.0]', ch=True, w=1.0 )

# Apply a constraint around the midpoint in the parameter domain on curve1.
cmds.pointCurveConstraint( 'curve1.un[0.5]', ch=True, w=-1.0 )