Hello to all in this thread,
I have absolutely no terrain expertize and I don't know how OSG
implements this, but just out of curiosity:
Suppose you have terrain elevation stored in an image (in CPU memory) as
well as normals.
Given the 2d coordinate of an entity in elevation image space - wouldn't
calculating the height and normal (resp. orientation) merely reduce to a
bilinearly interpolated lookup in that image?
I may be wrong, but shouldn't it be possible to get interactive update
rates that way?
Best,
Joachim
John Burgess wrote:
Hi all,
My viewer needs to support at least 400 entities running at 30 Hz.. My entities
are all moving tanks and I need to clamp them to the terrain using an update
call back in every frame, the frame rate will drop to 3 Hz when I load 300
tanks with the update cycle taking up a huge amount of time. How can I achieve
30 Hz for 400 entities and yet be able to clamp them to the terrain?
Thanks,
John
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Dipl. Inf. Joachim E. Vollrath
Visualisierungsinstitut der Universitaet Stuttgart (VISUS)
web: http://www.vis.uni-stuttgart.de/~vollrajm/
mail: [EMAIL PROTECTED]
phone: 49.711.7816.403
fax: 49.711.7816.213
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