How to map atan2() to degrees 0-360

Solution using Modulo

A simple solution that catches all cases.

degrees = (degrees + 360) % 360;  // +360 for implementations where mod returns negative numbers


Positive: 1 to 180

If you mod any positive number between 1 and 180 by 360, you will get the exact same number you put in. Mod here just ensures these positive numbers are returned as the same value.

Negative: -180 to -1

Using mod here will return values in the range of 180 and 359 degrees.

Special cases: 0 and 360

Using mod means that 0 is returned, making this a safe 0-359 degrees solution.

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