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CircleTangentAt Method

Circles use trigonometric parameterization: t -> center + cos(t)*radius*xaxis + sin(t)*radius*yaxis.

Namespace:  Rhino.Geometry
Assembly:  RhinoCommon (in RhinoCommon.dll)
public Vector3d TangentAt(
	double t


Type: SystemDouble
Parameter of tangent to evaluate.

Return Value

Type: Vector3d
The tangent at the circle at the given parameter.
Version Information

Rhino for Mac

Supported in: 5.4

Rhino for Windows

Supported in: 6.20
See Also