How to give particles random scale

[jwhit6142004]

So I was just figuring out how to give particles random sizes in the previous versions of houdini via tutorials but now since houdini 13 changed and they've moved the particles to DOPS, im having trouble finding a clear tutorial on how to do this exactly in the new version. My main problem is how do i use the "copy" sop when the two networks are separate?

[edward]

Use an Object Merge SOP to fetch the geometry from the other object.

[jwhit6142004]

ok i tried finding that node but its not showing up when i search for it?

[narbuckl]

Hello,

 

-Make sure you have particle id's (which the pop network creates by default)

-In a vopsop plug id into a random vop and output pscale.

-The random vop always outputs a number between 0-1 so you can fit the output to remap it to whatever you want.

 

After you have the particles or points with a pscale attribute the copy sop takes that into account when stamping whatever geometry you may wish to be on the particles.

 

I attached an example.

 

-Nathan

randomPscale.hip

[jwhit6142004]

I think im starting to understand a little bettter. But how about I just send you the file so you can see what im working with. I have noticed that you didnt Instance the geometry like i did. That could be the reason im not getting it to do what i want??Ver_1.hipnc

[narbuckl]

You just didn't have the pscale attribute, and you should use an instance object or make sure point instancing is on. Anywho, heres your file with random scale.

 

 

Ver_2.hipnc