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NurbsCurveUVNDirectionsAt Method

Calculates the u, V, and N directions of a NURBS curve at a parameter similar to the method used by Rhino's MoveUVN command.

Namespace:  Rhino.Geometry
Assembly:  RhinoCommon (in RhinoCommon.dll)
Since: 7.0
Syntax
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public bool UVNDirectionsAt(
	double t,
	out Vector3d uDir,
	out Vector3d vDir,
	out Vector3d nDir
)

Parameters

t
Type: SystemDouble
The evaluation parameter.
uDir
Type: Rhino.GeometryVector3d
The U direction.
vDir
Type: Rhino.GeometryVector3d
The V direction.
nDir
Type: Rhino.GeometryVector3d
The N direction.

Return Value

Type: Boolean
true if successful, false otherwise.
See Also