Quadtree is a powerful spatial indexing technique. Wikipedia.
Every now and then I been thinking to implement a collision detect function using quadtree. Playing with quadtrees is so fascinating that I haven't got as far as collision detect, but I have a simple general quadtree demo page online. Play with it. It's inspiring.
If you are interested in experimenting, I enclosed the basic functions in QT.js library. The collision detector will be there too but I have some different applications in mind first.
Thursday, April 28, 2011
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