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CustomGripObjectEvaluateGripDirections Method

Evaluates this grip's directions. For a surface control point these are the two surface tangents and the normal; for a curve control point, the tangent and a frame around it. Rhino caches the result per grip and does not ask again, so the directions must not change once reported.

Namespace:  Rhino.DocObjects.Custom
Assembly:  RhinoCommon (in RhinoCommon.dll)
Syntax
Copy
protected virtual bool EvaluateGripDirections(
	out Vector3d x,
	out Vector3d y,
	out Vector3d z
)

Parameters

x
Type: Rhino.GeometryVector3d
First direction.
y
Type: Rhino.GeometryVector3d
Second direction.
z
Type: Rhino.GeometryVector3d
Third direction.

Return Value

Type: Boolean
true if the directions were set. The default implementation returns false.
See Also