08 August 2007, 05:49 AM
The tail of the streak will be opposite to the direction of the particle velocity. Though the particle move in x-axis with respect to surface, as the object moves in -y, the direction of velocity will be more in -y (say <<11.35, -112.95. 0.00>>)
Hide the original particles. Add another particle in the scene, use the same emitter and same lifespan. instead of adding goal, use this before dynamics expression...
particleShape2.position = particleShape1.position;
particleShape2.velocity = <<1,0,0>>;
now the particleShape2 will move along with particleShape1, but will have the tail in -x direction. If u still want to change the tail direction, set the particle velocity to negative vector of that direction.
08 August 2007, 04:00 PM
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