M

PolymeshTopology.GetNormal

Description:
Returns a normal vector at the given index

public XYZ GetNormal(
	int idx
)

Public Function GetNormal ( _
	idx As Integer _
) As XYZ

public:
XYZ^ GetNormal(
	int idx
)

Return Value XYZ value representing a normal vector

Autodesk.Revit.Exceptions.ArgumentException

The given value is not a valid index of a normal of the polymesh. A valid valure is not negative and is smaller than the number of normals in the polymesh.