Interpolating Radian Angles?

Question

If I'm given a start angle of 1.0f, and an end angle of 6.0f, then what I really want to interpolate is not the 5 in between 1 and 6, but the smaller portion. This will cause counter clockwise interpolation. How can I account of this when interpolating?

Essentially, when given 2 radian angles from 0 to 6.283, how can I know if I should interpolate clockwise or counter clockwise based on which would be "shorter"?

Thanks

Answer 1

Get the target angle minus starting angle. If that is greater than PI, go counterclockwise.

Invert the logic if the value is negative.