#pre tag

[webvars]

How to represent computer code correctly

You should represent the computer code using the correct tags when you write a post about the computer science. (more…)

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[thegenerativeexperience]

These are the functions I'm using to rotate 3-dimensional co-ordinates, taken from here and here

I kind of suspect the source of all the strange warping is in there somewhere.

import math def cart_to_polar(xyz): x, y, z = xyz x = float(x); y = float(y); z = float(z) r = (x**2 + y**2 + z**2) ** 0.5 if r == 0: # to avoid division by zero return (0,0,0) phi = math.acos(z / r) theta = math.atan2(y, x) return (r, theta, phi) def polar_to_cart(r, theta, phi): x = r * math.cos(theta) * math.sin(phi) y = r * math.sin(theta) * math.sin(phi) z = r * math.cos(phi) return (x, y, z) def rotate(xyz, dtheta, dphi): r, theta, phi = cart_to_polar(xyz) return polar_to_cart(r, theta + dtheta, phi + dphi)