glb_hide_points_limb.pro

NAME: glb_hide_points_limb PURPOSE: Hides points lying on the surface of a GLOBE object that are obscured by the limb with respect to a given viewpoint. This procedure is much faster then the more general glb_hide_points. CATEGORY: NV/LIB/GLB CALLING SEQUENCE: sub = glb_hide_points_limb(gbd, view_pts, hide_pts) ARGUMENTS: INPUT: gbd: Array (nt) of any subclass of GLOBE descriptors. view_pts: Columns vector giving the BODY-frame position of the viewer. hide_pts: Array (nv) of BODY-frame vectors giving the points to hide. OUTPUT: NONE KEYWORDS: INPUT: NONE OUTPUT: NONE RETURN: Subscripts of the points in p that are hidden by the object. Note that this routine is only valid for points that lie on the surface of the globe. This routine is faster than glb_hide_points. STATUS: Complete MODIFICATION HISTORY: Written by: Spitale, 1/1998 Adapted by: Spitale, 5/2016