creating an RBD trail ( not debris)

[hou_noob]

HI All:

I have a simple scene with a rbd sphere with initial velocity

 

i would like to create new spheres at each frame , ( almost like a trail of spheres, I would like them to be RBD with activate set to off, so they are frozen  )

 

I am lost and dont know how to proceed, any tip would be appreciated. thanks 

 

trail.hipnc

[anim]

not sure about your intentions but here, passive RBD trail from spheres

trail_fix.hipnc

[hou_noob]

not sure about your intentions but here, passive RBD trail from spheres

thanks a bunch tomas! trying to play with motion blur but using shaders on actual geometry.... 

[anim]

for that you don't need the spheres to be passive RBDs, just use Trail SOP on resulting sphere geometry from DOPs

Edited January 24, 2014 by anim

[hou_noob]

thanks for the tip. good to know another way to achieve the same effect.

 

followup question ( did not want to create yet another thread ) 

 

i have a group node ( with an animated bounding box over a bunch of points ) as the source to a pop network . 

the setup works fine except when there zero elements in the group node.... the particles are created at the origin when i expect there to be no particles because there is no source... 

 

here is file

 

group.hipnc

[anim]

that's a bug in POP Source DOP, you can submit it (with your original file)

 

to solve it easily just after your group1 append Blast SOP, put the group name in Group parm and check Delete Non Selected

it will keep just points that are part of group and send them to DOPs