Standardize label angles — angle_halfcircle

Function factories that return functions to standardize rotation angles to specific angle ranges.

Usage

angle_halfcircle_bottom()

angle_halfcircle_right()

angle_fixed(theta = 0)

angle_identity()

angle_halfcircle_bottom() standardizes angles to (-pi/2, pi/2].

angle_halfcircle_right() standardizes angles to (0, pi].

angle_fixed() sets all angles to a fixed value (0 by default).

angle_identity() does not modify any angles.