Point4d Properties 
The Point4d type exposes the following members.
Name  Description  

Unset 
Gets the value of a point with all coordinates set as RhinoMath.UnsetValue.
 
W 
Gets or sets the W (fourth) coordinate or weight of this point.
 
X 
Gets or sets the X (first) coordinate of this point.
 
Y 
Gets or sets the Y (second) coordinate of this point.
 
Z 
Gets or sets the Z (third) coordinate of this point.
