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ASCIIMoon: The moon's phase live in ASCII art

(asciimoon.com)
268 points zayat | 2 comments | 01 Jul 25 10:53 UTC | HN request time: 0.645s | source
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_aavaa_ ◴[02 Jul 25 20:07 UTC] No.44448237[source]▶
While cool it’s a bit of a cop out to use a bitmap as a mask for both the circular shape and the shading of the earth’s shadow.
replies(4): >>44448437 #>>44448579 #>>44448638 #>>44450646 #
1. ludicrousdispla ◴[02 Jul 25 20:40 UTC] No.44448579[source]▶
Lunar phase should be showing the moon's shadow (on itself) which will not be circular from our perspective on Earth except during the new moon phase.

This looks more like what is seen during a solar eclipse.

replies(1): >>44448985 #
2. eichin ◴[02 Jul 25 21:21 UTC] No.44448985[source]▶
Yeah, this rendering is Just Wrong - moon phase is viewing a half-lit sphere from different angles, no external shadows are involved. Maybe look at https://github.com/chubin/pyphoon instead, which claims a history including Jef Poskanzer code going back to the 1970s...