Ancestors

Written by Freya Holmér on 2024-10-06 at 23:40

behold - trackball rotation!!

it was super fun implementing this, had to properly learn a few quaternion things I was only vaguely aware of before!

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Written by Stephen Bannasch (316 ppm) on 2024-10-07 at 00:48

@acegikmo I think quaternians are fun, they also make my head hurt. Long time ago I made a earth and sun 3d model. The earth rotated on its axis and orbited the Sun. The viewer could start on the surface and see date and time appropriate light/shadows. Could rise up and still traverse a virtual shell of the surface or change to a view from the elliptic and traverse a shell around the orbiting and spinning earth.

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Toot

Written by Oblomov on 2024-10-07 at 02:52

@stepheneb @acegikmo you may want to look into the geometric algebra approach. It boils down to the same calculations for the most part, but with a much more sensible formalism (at least IMO).

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Descendants