This movie shows how my thinking Particles confetti asset works. I'm inspired by the bunch of confetti R&D movies recently :-)

vimeo.com/50683692 3dsMAX TP (by notchmen)

vimeo.com/50776934 MAYA particle (by spx808)

vimeo.com/50581059 Houdini (by K240)

vimeo.com/50622975 XSI ICE (by LBX)

vimeo.com/50878739 Blender (by naoki)

With calculating dot product between particles Z alignment and moving direction, I can get value from -1 to 1. When value is close to -1 or 1, I add strong friction. At the same time, I add some x and -x position value according to dot product's value. Y and -y position also. In this way, particles can move from side to side.

This version needs some modification. I'll provide my setting when everything has been perfect :-)

j vimeo.com/50864957

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