Copy stamp for Chops

[revelationsr]

Hi there.

 

I have a sphere. I have put several points on there with scatter points. I have copy stamped a sphere onto those points.

 

I would like to have those sphere change in scale on rare occasion. Kind of like vibrating but in scale. How can I go about setting up a "vibrating" animation and then have that animation randomly execute on a random sphere from time to time?

 

If I am not mistaken I need to use copy in chops. But I cant seem to find a good tutorial on this. Any idea where I can find one. Unless I am heading in the wrong direction on this.

 

Cheers

[Guest]

You can just create and manipulate the pscale attribute for the template points.

[revelationsr]

35 minutes ago, judnas said:

You can just create and manipulate the pscale attribute for the template points.

Sorry man. I dont know what "template points" mean. Still new.

[vtrvtr]

I don't think you need to use chops you could use chops 

With chops I particularly find it a bit roundabout, but it goes like this:

Initial setup with a transform sop that will control the scale:

 

A simple chops noise makes it go like this

https://i.imgur.com/SRrT3RX.gifv

But now you want to modulate by the pointnumber, afaik you need a single channel for every ball which calls for a copy node. Here I'm using a expression to create a channel for each point from 0 to the number of points in the pointsfrmovolume1 node. Then I'm using a simple stamp function to vary the seed of the noise (it's hard to see but each curve is different)

Now, using a chop expression you can bring it into sops. Note the $PT

After this a simple stamp function in the transform node and that's it. Each sphere has its own curve, which means you can do whatever you want with it.

https://i.imgur.com/V4lZkd2.gifv

This might be a old work flow, I'm not sure

 

 

 

[revelationsr]

Wow great replay. I am so going to try this out. Thank you so much man !