Stewart Robert Hinsley wrote:

(I counted pixels because of the possibility, resulting from the
combination of a wide screen display and a graphics card from the days
of 4:3 displays, that the pitch was different between horizontal and
vertical directions, but any difference is nowhere near 15%.)

Yep, you're right. I was using 800x600 (so I could _see_ stuff)
now I've changed to 1280x800, and the planet is circular again
(but much further away!).

Thanks for sorting that out.

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Sleepalot aa #1385