From: Chris Delnooz (cdelnooz++at++email.com)
Date: 06/28/2000 06:43:06
Hi everybody
I am a computer science student doing an internship, and I am quite new to
3D visualisation and to Performer.
I am working on a 3D tactical display, in which radar tracks are visualised
by appropriate models (aircrafts, ships etc.). I used to have a map textured
on the ground plane and I could draw "radar circles" on that same plane.
Those circles have their origin at my own ship and indicate the radar
ranges.
I now have replaced the map with a digital terrain database (in flt format)
which works out quite nice. But now I can't see the circles anymore because
they are still drawn on 0-level and lay most of the time "below" the
terrain. I need a way to draw those circles on the terrain surface.
Now, I read something about an "Intersection Traversal" so I got the idea to
represent my circles by cylinders and then draw the intersection with the
cylinders and the terrain. However I don't no how I can implement such
intersection calculations. Does anyone has other idea's how to get the
circles on the terrain or can anyone give me some hints on how to implement
the above solution?
Any help is greatly appreciated
regards
Chris
Chris Delnooz
Hollandse Signaalapparaten BV c.delnooz++at++signaal.nl
Eindhoven University of Technology c.delnooz++at++stud.tue.nl
+31 - 74 248 3286
-----------------------------------------------
FREE! The World's Best Email Address ++at++email.com
Reserve your name now at http://www.email.com
This archive was generated by hypermail 2b29 : Wed Jun 28 2000 - 06:42:56 PDT