A short study to test, how many 3D particles could be rendered in AS3. Seems a huge. The code scanlines a bitmap and creates 3D coordinates with a random z-value. The computed x,y values result a normal 2D view, when projecting without further transformation. By clicking the mouse button, you can rotate the particles in 3d space. In this case, I’m rotating and projecting 9180 particles.
try your own pictures -default-size 256 256 -default-frame-rate 120 -optimize
BitmapCloud 3D (require flash8.5player)