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In lugnet.cad.dat.parts.primitives, Travis Cobbs writes:
> The existing 1-8sphe.dat file contains 9 quads and 4 triangles. The
> individual triangles are each less than half the surface area of the
> individual quads, producing an unbalanced distribution. In addition, the
> quads are either non-planar, don't fall on the surface of an actual sphere,
> or both.
Following an initiative by Axel Poqué, I've resubmitted an improved version
of the original 1-8sphe.dat primitive for the next update. This version
still has 9 quads and 4 triangles, but coplanarity and meeting the surface
of the sphere falls whithin acceptable limits (dist less than 0.01, as
agreed with Lars C. Hassing), because I've recalculated all coordinates up
to 4 decimal places. So reasons 2 and 3 are eliminated by this fix.
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Message is in Reply To:
 | | Possible replacement for 1-8sphe.dat [DAT]
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| I started a discussion on the .dev group regarding sphere tesselation a little while back, and it came out that there is some dissatisfaction with the current sphere primitive. I have finished the code which generates a replacement sphere primitive, (...) (24 years ago, 21-Sep-00, to lugnet.cad.dat.parts.primitives)
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