If nonzero, indicates that the raising of the Changed event has been suspended. This value is incremented when SuspendChangedEvent is called and decremented when ResumeAndRaiseChangedEvent is called.

Gets/sets the direction of this ray. The getter returns a unit vector.

Determines whether or not this curve shape is degenerate. This occurs when curve shapes have a perimeter of 0.

Indicates if the set of points lying on the boundary of this shape is empty.

Indicates if this shape has finite extents.

Gets/sets the start point of the ray.

The 3D coordinate space in which this shape is to be interpreted.

Gets/sets the ShapeState for this shape.

Returns the complete set of state flags supported on this object. The flags may be indexed by name as shown in the following C# code snippet: if (changedObject.StateFlags["Color"] & eventArgs.StateFlags) { ... }