Steve Baker (steve++at++mred.bgm.link.com)
Tue, 24 Jun 97 09:32:51 -0500
I have this:
pfScene
|
________|________
| |
pfSCS pfSCS
| |
| |
Geometry Geometry
The two sets of geometry are terrain tiles, each modelled with their local
origin at the center of the tile. The two SCS's translate (but don't rotate)
the tiles so that (in theory) they exactly touch along one edge.
I noticed that when the pfScene is 'pfFlatten'ed, the two tiles match up
nicely - with no cracks at the boundaries. However, in actual use, I don't
have enough memory to flatten the scene graph in this manner.
When I *don't* flatten the scene, there is a thin crack between the two tiles
which was not there in the pfFlattened case.
I'm using an iR machine with OpenGL. Could it be that OpenGL is doing the
SCS translation with less precision than Performer?
Steve Baker 817-619-1361 (Vox-Lab)
Hughes Training Inc. 817-619-8776 (Vox-Office/Vox-Mail)
2200 Arlington Downs Road 817-619-4028 (Fax)
Arlington, Texas. TX 76005-6171 Steve++at++MrEd.bgm.link.com (eMail)
http://www.hti.com (external) http://MrEd.bgm.link.com/staff/steve (intranet)
http://web2.airmail.net/sjbaker1 (external)
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This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:55:30 PDT