M

Floor.GetNormalAtVerticalProjectionPoint

Description:
Return a surface normal on either the top or bottom face of a floor slab at a point corresponding to the vertical projection of an arbitrary point in project space.

Remarks:
If the floor is shape edited, the floor location at which we attempt to take the normal must be within the boundaries of a face on the slab. Otherwise the method will return .a null reference (Nothing in Visual Basic).

public XYZ GetNormalAtVerticalProjectionPoint(
	XYZ modelLocation,
	FloorFace floorFace
)

Public Function GetNormalAtVerticalProjectionPoint ( _
	modelLocation As XYZ, _
	floorFace As FloorFace _
) As XYZ

public:
XYZ^ GetNormalAtVerticalProjectionPoint(
	XYZ^ modelLocation, 
	FloorFace floorFace
)

Autodesk.Revit.DB.XYZ

modelLocation

A point in project coordinates whose vertical projection will determine the location at which the normal will be taken.
Autodesk.Revit.DB.FloorFace

floorFace

A flag determining whether the top or bottom face of the floor should be used.

Return Value XYZ Normal vector on the slab at the projection point.