Particle instance ->>-----> Aim Direction (Velocity) + Spinning (?)

[sagun-manandhar]

hi

a simple question though answer might be that simple..

i was able to do aiming to right direction of particle moving by putting “Veloctiy “ in “Aim Direction” but at the same time what if i also wanted to spin the instance objects (eg. arrows)

thanks
nugas

[sagun-manandhar]

help help help

[cosku-ozdemir]

Create a new per-particle-vector attribute called rotationPP,
set the aimDirection to that vector-attribute instead,
and put this into your runtime rule:

$vel = velocity;
float $angle[] = angleBetween -euler -v1 1 0 0 -v2 ($vel.x) ($vel.y) ($vel.z);
rotationPP = <> ;

[sagun-manandhar]

hi cosku,

can't figure out still.
checked your expression but not working.

for example lets say i wanted to spinn arrow while pointing to the direction.
thanks

[sagun-manandhar]

hi cosku,

still can't figure out your method . Can u link your maya file ?

By the way i found another way .. if anybody else is looking for same answer here is the link :

http://www.creativecrash.com/forums/dynamics-amp-effects/topics/particles-instancer

thanks Joojaa for helping me out ..