get edges from voronoi fracture

[Juzwa]

Hi, 

So voronoi fracure sop creates those two groups, inside and outside. 

What I want is to play a bit with edges in vopsop. So I had an idea to maybe somehow do the "math" on the points that are both in groups inside and outside. but those grops are prim groups

Then I had another idea to create some attribute, basedon prim groups, lets call it inOut (0 for inside 1 for outside). But I dont think it works that way, because when I test this out in vopsop and delete points based on my new inOut group, some weird random points are deleted.

So how can I do that? I mean get only those points on the edges?

Edited September 28, 2016 by Juzwa

[woodenduck]

group sop/edit/convert/primitives to points. 

Then in an attribute wrangle add:

if(inpointgroup(0, "inside", @ptnum) && inpointgroup(0, "outside", @ptnum))
    {
        setattrib(0, "pointgroup", "edge", @ptnum, -1, 1, "set");
    }

You should now have a new group "edge", which you can operate on in the vop. 

Cheers,

WD