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Rhino.Geometry.Collections

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NurbsCurveKnotList

NurbsCurveKnotList class

Provides access to the knot vector of a NURBS curve.

Derived Classes:

Namespace: Rhino.Geometry.Collections
NurbsCurveKnotList: references

Properties (5)

Count

Total number of knots in this curve.

IsClampedEnd

Gets a value indicating whether or not the knot vector is clamped at the end of the curve. Clamped curves are coincident with the first and last control-point. This requires fully multiple knots.

IsClampedStart

Gets a value indicating whether or not the knot vector is clamped at the start of the curve. Clamped curves start at the first control-point. This requires fully multiple knots.

Item

Gets or sets the knot vector value at the given index.

KnotStyle

Gets the style of the knot vector.

Methods (15)

ClampEnd(CurveEnd end)

Clamp end knots. Does not modify control point locations.

Contains(double item)

Returns an indication of the presence of a value in the knot list.

CopyTo(double array, int arrayIndex)

Copies the list to an array.

CreatePeriodicKnots(double knotSpacing)

Compute a clamped, uniform, periodic knot vector based on the current degree and control point count. Does not change values of control vertices.

CreateUniformKnots(double knotSpacing)

Compute a clamped, uniform knot vector based on the current degree and control point count. Does not change values of control vertices.

EnsurePrivateCopy()

If you want to keep a copy of this class around by holding onto it in a variable after a command completes, call EnsurePrivateCopy to make sure that this class is not tied to the document. You can call this function as many times as you want.

EpsilonEquals(NurbsCurveKnotList other, double epsilon)

Checks that all values in the other list are sequentially equal within epsilon to the values in this list.

IndexOf(double item)

Returns the first item in the list.

InsertKnot(double value, int multiplicity)

Inserts a knot and update control point locations. Does not change parameterization or locus of curve.

InsertKnot(double value)

Inserts a knot and update control point locations. Does not change parameterization or locus of curve.

KnotMultiplicity(int index)

Get knot multiplicity.

RemoveKnotAt(double t)

Remove a knot from a curve and adjusts the remaining control points to maintain curve position as closely as possible.

RemoveKnots(int index0, int index1)

Remove knots from a curve and adjusts the remaining control points to maintain curve position as closely as possible. The knots from Knots[index0] through Knots[index1 - 1] will be removed.

RemoveMultipleKnots(int minimumMultiplicity, int maximumMultiplicity, double tolerance)

Remove multiple knots from this curve.

SuperfluousKnot(bool start)

Computes the knots that are superfluous because they are not used in NURBs evaluation. These make it appear so that the first and last curve spans are different from interior spans.
http://wiki.mcneel.com/developer/onsuperfluousknot

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