Find the nearest point on a line to an arbitrary point. 
- Parameters
- 
  
    | lineStart | Start of line segment. |  | lineEnd | End of line segmnt. |  | point | Point of reference to find the closest point on the line. |  | pOutput | Pointer to an MFVector that received the output. |  
 
- Returns
- The nearest point on the ray to the specified point.