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 Flag can have multiple arguments, passed either as a tuple or a list.
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 Advanced flags
name (n)		unicode
	Name the resulting object
nodeState (nds)		int
	Modifies the node state. See the node documentation for more information. Note:For advanced users only. Common flags
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
replaceOriginal (rpo)		bool
	Create in place(i.e., replace)

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.