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authorVito Caputo <vcaputo@pengaru.com>2023-07-21 15:39:46 -0700
committerVito Caputo <vcaputo@pengaru.com>2023-07-21 15:39:46 -0700
commit29a42f48fcddf51bdf0ae640aa2513f1091e10d3 (patch)
tree9e6449568afe5e5d20fcb68138b3248190b245b0 /m4/sdl2.m4
parentb249494bd62713a5a2fcb1cd4180e5001643f2ac (diff)
modules/shapes: drop atan2_approx()
With the addition of the "radcache" in b6362c, the need for a faster approximate atan2f() is largely eliminated. And there seems to be a bug in the implementation as-is taken from https://mazzo.li/posts/vectorized-atan2.html You can see the bug as vertical line artifact around the center where the X coordinate would be 0. Rather than debug what's wrong with this approximation's implementation surrounding its quadrant adjustments, let's just resume using atan2f() and let the cache keep things quick.
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