Global Spectra Deconvolution
Pick a random item from a weighted list.
Static point picking/selection routine
A simple jQuery plugin for picking provinces, cities and districts of China.
Get the normalized ray that your mouse is projecting into your scene
Pick random items from a list
whether a picking ray intersects with a plane
a high-level ray picking helper for 3D intersection
test whether a ray intersects with a sphere
creates a picking ray for a 2D/3D camera
Point picking and selection routines for glsl