On Dec 11, 2009, at 10:58 AM, cullam Bruce-Lockhart wrote:
Hey gang.
I've just started putting together some visual aids in understanding
what happens in a scenery build process. That's well and good, but
I'm having an issue with terrafit. I've recently discovered that my
understanding of how terrafit works is wrong. I'd always assumed it
took a grid of elevations, calculated "planes of best fit", using
the max error threshold, then adjusted all the heights in the grid.
It turns out that it actually leaves the heights unchanged, but
deletes any that aren't deemed significant. I've been reading
through terrafit.cc, but I can't figure out anything about what it
does to determine significance.
Could anyone explain to me how terragear uses the error threshold to
determine what the list of points to be included is?
see
http://www.cs.cmu.edu/afs/cs/Web/People/garland/scape/
specifically
http://www.cs.cmu.edu/afs/cs/Web/People/garland/scape/scape.pdf
Norman
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