Freezing particle transformation but allowing rotation

[timur04]

How do I keep particles from moving on the x y z but allowing wind and other forces to affect their rotation? What would be the vex code in a pop wrangle?

 

Thanks!

[Atom]

Just create a companion goal location for each particle at the start and then when the particles are close enough to the goal location, assign the goal location as the actual location.

To initialize, use a scatter with the scatter count matching your point count. Route that into an attribute wrangle's second input.

v@goal_location = v@opinput1_P;  

Pop Wrangle

float distance = length(@P - @goal_location); 
if (distance < 0.1) {@P = @goal_location;}

Other forces should still rotate the particle.