particles and debri geo

[nFrame]

Hey Guys,

I've been running through the cmivfx houdini debri system tutorial, and have found myself stuck. I'm trying to figure out how to use the exported bgeo sequence for my particle debri. I've got the instancing setup, but can't get passed all the particles getting the same bgeo/$F, and cycling through the sequence. I've tried to follow the expression he uses, but his broken english is really making it really difficult to understand along with my inexperience. Does anyone mind explaining the expression in more understandable terms? or have any other tips for this?

Thanks!

[nFrame]

no one?

[JuriBryan]

use the stamp function.

$HIP/debri_

`floor(fit01(rand(stamp("../copy1",i,0)),0,maxNumberOfDebriPiecesYouHave))

`.bgeo

that is the function you need to use in the file sop.

"i" is the variable you created in the copy node with a value of $ID.

and don't forget to turn on stamp

copies in the copy node.

that should do what you want.

If you ever are not sure if a stamp works or not, simply create a font node, use your stamp expression as text of the font and run it through the copy node.

then the result of your stamp expression will be the text of the font and should be different for each copy.

Hope that helps,

Juri

[JuriBryan]

ohh and I don't know the message got formatted so strangely.

[JuriBryan]

Ohh and you want to use $ID instead of $PT because $ID stays the same, even if you delete or add points.

It just adds more control since when your using $ID you can delete points you don't like with out changing the entire look of your debri.

cheers