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 “degree” knots 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 ../../../_images/create.gif ../../../_images/query.gif ../../../_images/edit.gif
 
Whether to add knots or complement. Complement means knots will be added to reach the specified number of knots.Default:true
caching (cch) bool ../../../_images/create.gif ../../../_images/query.gif ../../../_images/edit.gif
 
Modifies the node caching mode. See the node documentation for more information.Note:For advanced users only.
constructionHistory (ch) bool ../../../_images/create.gif
 
Turn the construction history on or off
curveOnSurface (cos) bool ../../../_images/create.gif
 
If possible, create 2D curve as a resultFlag can appear in Create mode of commandFlag can have multiple arguments, passed either as a tuple or a list.
insertBetween (ib) bool ../../../_images/create.gif ../../../_images/query.gif ../../../_images/edit.gif
 

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:falseAdvanced flags

name (n) unicode ../../../_images/create.gif
 

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 ../../../_images/create.gif ../../../_images/query.gif ../../../_images/edit.gif
 
Modifies the node state. See the node documentation for more information.Note:For advanced users only.Common flags
numberOfKnots (nk) int ../../../_images/create.gif ../../../_images/query.gif ../../../_images/edit.gif
 
How many knots to insert. At any point on the curve, there can be a maximum of “degree” knots.Default:1
object (o) bool ../../../_images/create.gif
 
Create the result, or just the dependency node
parameter (p) float ../../../_images/create.gif ../../../_images/query.gif ../../../_images/edit.gif
 
Parameter value(s) where knots are addedDefault:0.0
replaceOriginal (rpo) bool ../../../_images/create.gif
 
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.

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