I would like to use a Sweep SOP to make a tube with randomized radius along curve, like this.

I used an Attribute Randomize SOP to set a point attribute @radius, but I am having difficulties accessing the attribute as a parameter in the Sweep SOP.

My intuition from VEX is to use the following:


But it doesn't work, and gives me an error.

Could someone explain to me why using @radiusworks on the PolyWire SOP, but not the Sweep SOP?

Hi,

You can't break the execution of the Sweep SOP like that using per point expressions. You can just set pscale to be randomized instead:

Hi,

The Sweep SOP can use the @pscale attribute to drive the radius along the curve. So if you set @pscale instead of @radius in the Attribute Randomize, you should get the result you are looking for, without having to write any expression in sweep node.

EDIT : it's just same thing as said by @animatrix_ we were writing at same time ^^

Thanks @animatrix_ and @ObeidaZakzak !