Converting from Spherical to Parabolic Coordinates

Aner Ben-Artzi, Columbia University. Computer Science
"We start with θ and φ, as defined in computer graphics so that θ is the angle from the pole, or latitude, and φ is the polar angle, or longitude. This is the opposite of mathematical convention."
doi:10.7916/d81c2823 fatcat:ukgtydhhx5a2ze74e7cavcy2je