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Synopsis

insertKnotCurve [-addKnots boolean] [-caching boolean] [-constructionHistory boolean] [-curveOnSurface boolean] [-insertBetween boolean] [-name string] [-nodeState int] [-numberOfKnots int] [-object boolean] [-parameter float] [-replaceOriginal boolean] curve

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.

Return value

string[]Object name and node name

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

Flags

addKnots, caching, constructionHistory, curveOnSurface, insertBetween, name, nodeState, numberOfKnots, object, parameter, replaceOriginal
Long name (short name) Argument types Properties
-parameter(-p) float createqueryeditmultiuse
Parameter value(s) where knots are added
Default: 0.0
-numberOfKnots(-nk) int createqueryeditmultiuse
How many knots to insert. At any point on the curve, there can be a maximum of "degree" knots.
Default: 1
-addKnots(-add) boolean createqueryedit
Whether to add knots or complement. Complement means knots will be added to reach the specified number of knots.
Default: true
-insertBetween(-ib) boolean createqueryedit
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
-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.
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)
-curveOnSurface(-cos) boolean create
If possible, create 2D curve as a result

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 be used more than once in a command.

MEL examples

insertKnotCurve -ch on -p 0.3 -nk 2 curve1;
insertKnotCurve -ch on -nk 2 curve1.u[0.3];
// Both commands will insert two knots into curve1 at parameter value 0.3.
// Because the -ch flag is used, a dependency node is created.

insertKnotCurve -ch on -add off -p 0.5 -nk 3 curve1;
// 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.

insertKnotCurve -ch on -p 0.3 -p 0.5 -p 0.8 curve1;
// Inserts a default of one knot at each parameter value: 0.3, 0.5 and 0.8.

insertKnotCurve -ch on -p 0.3 -p 0.5 -p 0.8 -nk 2 curve1;
// Inserts two knots at each parameter value: 0.3, 0.5 and 0.8.

insertKnotCurve -ch on -p 0.1 -p 0.3 -p 0.5 -p 0.8 -nk 1-nk 2 curve1;
// Invalid command.  The number of -nk flags doesn't match the number
// of -p flags.