jllanfranchi

#!/usr/bin/env python

"""
For 400 x 300
Disabling Numba (i.e. Python looping, NOT numpy optimized) speed is 28.6 sec
Enabling Numba is 0.45 sec (further optimizations including removing some function calls gets this down to 0.23 sec)
Note that a Numpy version rt3.py at http://www.excamera.com/sphinx/article-ray.html is still fastest at ~0.11 sec.

Note that I have removed the checker pattern from the original code
"""