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Go to: Synopsis. Flags. Return value. Python examples.

Synopsis

insertKnotCurve( [curveName] , [addKnots=boolean], [constructionHistory=boolean], [curveOnSurface=boolean], [insertBetween=boolean], [name=string], [numberOfKnots=int], [object=boolean], [parameter=float], [polygon=int], [range=boolean], [rebuild=boolean], [replaceOriginal=boolean])

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

insertKnotCurve is undoable, queryable, and editable.

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

addKnots, constructionHistory, curveOnSurface, insertBetween, name, numberOfKnots, object, parameter, polygon, range, rebuild, replaceOriginal
Long name (short name) [argument types] Properties
parameter(p) float queryeditmultiuse
Parameter value(s) where knots are added
Default: 0.0

In query mode, this flag needs a value.

numberOfKnots(nk) int queryeditmultiuse
How many knots to insert. At any point on the curve, there can be a maximum of "degree" knots.
Default: 1

In query mode, this flag needs a value.

addKnots(add) boolean queryedit
Whether to add knots or complement. Complement means knots will be added to reach the specified number of knots.
Default: true

In query mode, this flag needs a value.

insertBetween(ib) boolean queryedit
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

In query mode, this flag needs a value.

name(n) string create
Name the resulting object
constructionHistory(ch) boolean create
Turn the construction history on or off (not available in all commands)
object(o) boolean create
Create the result, or just the dependency node (not available in all commands)
replaceOriginal(rpo) boolean create
Create "in place" (i.e., replace) (not available in all commands)
curveOnSurface(cos) boolean create
If possible, create 2D curve as a result (not available in all commands)
polygon(po) int create
The value of this argument controls the type of the object created by this operation (not available in all commands)
  • 0: nurbs surface
  • 1: polygon (use nurbsToPolygonsPref to set the parameters for the conversion)
  • 2: subdivision surface (use nurbsToSubdivPref to set the parameters for the conversion)
  • 3: Bezier surface
  • 4: subdivision surface solid (use nurbsToSubdivPref to set the parameters for the conversion)
range(rn) boolean create
Force a curve range on complete input curve (not available in all commands)
rebuild(rb) boolean create
Rebuild the input curve(s) before using them in the operation. Use nurbsCurveRebuildPref to set the parameters for the conversion. (not available in all commands)

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.

Return value


[string[]] (object name and node name)

Python examples

import maya.cmds as cmds

cmds.insertKnotCurve( 'curve1', ch=True, p=0.3, nk=2 )
cmds.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.

cmds.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.

cmds.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.

cmds.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.

cmds.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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