3D geometry: SetPointToOrigin

       Name: SetPointToOrigin                                        [Show more]
       Type: Subroutine
   Category: 3D geometry
    Summary: Set a point's coordinates to the origin at (0, 0, 0)
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * ApplyFlightModel (Part 1 of 7) calls SetPointToOrigin
             * FireGuns calls SetPointToOrigin
             * ProcessHorizonLine calls SetPointToOrigin


 Arguments:

   X                    The ID of the point to set to the origin


.SetPointToOrigin

 LDA #0                 \ Set A = 0 so we set the X-th point to (0, 0, 0) below