Nacère Guerouaf

Hi everyone !

I think that my question have connections with this thread. I want to delete some elements (cloth, rbd) depending on their active attribut.
From here, nothing difficult but I want to apply a “delay” on the delete. Like delete elements after an amount of time activation (similar to age for particles) AND with randomness in this delay.

I wonder if i can give float value to activation? Because now it's strictly 0 or 1. And maybe use that in wrangle:

if (@active > ch('threshold')){
removepoint(0,@ptnum);
}

Maybe wrong code, I'm pretty new with vex… and with that there isn't randomness too.

EDIT: stupid question about float value. I guess that an object can just be active or inactive. Maybe more on the way “age of activation”?

Anybody? Just want to add the rotation of my initial alembic from Maya to my fire pre-calculated in Houdini. Or another way to parenting this two elements..

I take this opportunity to ask another question: in my scene my groundplane catch some light of my fire. How can I keep just the light without the geometry of the ground? Light disappear with a matte_shading or shadow catcher..

I attach pictures for my two problems

Thanks !

It does not seem to work with this method…
My ship was animated in Maya so i don't know if Houdini have the right informations.. I can see center positions but nothing about translate, rotation or scale

My problem is surely an amateur thing. Maybe with an animation constraints or something like that?

EDIT: Center positions of my alembic give me translate animation as I suspected but my object turns on itself at the beginning. My fire doesn't follow the rotation of the spaceship. Any idea?