copy object to particles problem ...

[Mdonovan]

I am still learning about copying geometry to particle simulations.

 

I am having trouble understanding why my static collision objects are being included in my copy. I know I can delete them afterwards ... but is there a better way ?

 

I have included a .jpg that show the problem and my simple test .hip file.

 

Thanks !

simple_copy_particles.hip

[Sierra62]

When using the new pop network you need to use a dop i/o to pull the particles out of the sim.  If you just connect straight into the dopnet, you will get every piece of geometry in the sim.  I have attached a fix to your file.

simple_copy_particles_fix.hip

[Mdonovan]

T H A N K    Y O U 

 

learning this stuff has been a bit problematic since most of the learning material is from v13 and before.

 

Is it better form to keep the popnet out of the geometry node then ? placing it in a dopnet at the object level ?

 

Thanks again !!!

Edited May 25, 2015 by Mdonovan

[Georgie]

Cody's already answered your question but I wanted to mention something else. It'd be easier if you check out the file

dops.hipnc

[Mdonovan]

Thsnk Georgie this helps a lot.

 

I learned three ways to do random particles scaling.

1. Attribute Wrangle
2. Point Vop
3. Point Sop

 

They all use ID.

 

I am still confused about when I can use $ID though.  Like when do you use $ID vs. @id vs i@id

 

Ill get there.

[br1]

I learned three ways to do random particles scaling.

1. Attribute Wrangle
2. Point Vop
3. Point Sop

 

 

 

4. There's also the new Attribute Randomize SOP if you're using Houdini 14.