pymel.core.modeling.insertKnotCurve¶

insertKnotCurve(*args, **kwargs)¶

The insertKnotCurve command inserts knots into a curve given a list of parameter values. The number of knots to add at each parameter value and whether the knots are added or complemented can be specified. The name of the curve is returned. If construction history is on, the name of the resulting dependency node is also returned. An edit point will appear where you insert the knot. Also, the number of spans and CVs in the curve will increase in the area where the knot is inserted. You can insert up to degreeknots at a curve parameter that isn’t already an edit point. eg. for a degree three curve, you can insert up to 3 knots. Use this operation if you need more CVs in a local area of the curve. Use this operation (or hardenPoint) if you want to create a corner in a curve.

Flags:

Long Name / Short Name		Argument Types	Properties
addKnots / add		bool
	Whether to add knots or complement. Complement means knots will be added to reach the specified number of knots. Default:true
caching / cch		bool
	Modifies the node caching mode. See the node documentation for more information. Note:For advanced users only.
constructionHistory / ch		bool
	Turn the construction history on or off.
curveOnSurface / cos		bool
	If possible, create 2D curve as a result.
frozen / fzn		bool
insertBetween / ib		bool
	If set to true, and there is more than one parameter value specified, the knots will get inserted at equally spaced intervals between the given parameter values, rather than at the parameter values themselves. Default:false
name / n		unicode
	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.
nodeState / nds		int
	Modifies the node state. See the node documentation for more information. Note:For advanced users only. Flag can have multiple arguments, passed either as a tuple or a list.
numberOfKnots / nk		int
	How many knots to insert. At any point on the curve, there can be a maximum of degreeknots. Default:1
object / o		bool
	Create the result, or just the dependency node.
parameter / p		float
	Parameter value(s) where knots are added Default:0.0 Common flags
replaceOriginal / rpo		bool
	Create in place(i.e., replace). Advanced flags

Derived from mel command maya.cmds.insertKnotCurve

Example:

import pymel.core as pm

pm.insertKnotCurve( 'curve1', ch=True, p=0.3, nk=2 )
pm.insertKnotCurve( 'curve1.u[0.3]', ch=True, nk=2 )
# Both commands will insert two knots into curve1 at parameter value 0.3.
# Because the ch flag is used, a dependency node is created.

pm.insertKnotCurve( 'curve1', ch=True, add=False, p=0.5, nk=3 )
# Inserts enough knots into curve1 at parameter value 0.5 to
# achieve a knot multiplicity of 3.  Because the ch flag is used,
# a dependency node is created.

pm.insertKnotCurve( 'curve1', ch=True, p=(0.3, 0.5, 0.8) )
# Inserts a default of one knot at each parameter value: 0.3, 0.5 and 0.8.

pm.insertKnotCurve( 'curve1', ch=True, p=(0.3, 0.5, 0.8), nk=2 )
# Inserts two knots at each parameter value: 0.3, 0.5 and 0.8.

pm.insertKnotCurve( 'curve1', ch=True, p=(0.1, 0.3, 0.5, 0.8), nk=(1, 2) )
# RuntimeError: Number of knot flags must match number of parameter flags.