Spherical Geometry library for Java/Python
<p>Is there a good Spherical Geometry library for Java/Python? I'm looking for something similar to this <a href="http://googlegeodevelopers.blogspot.com/2011/01/little-help-with-spherical-geometry.html" rel="nofollow">http://googlegeodevelopers.blogspot.com/2011/01/little-help-with-spherical-geometry.html</a>. I need to be able to perform distance, heading, area calculations; would be nice if I can also do intersection and union of areas. </p>
