Group by primvertexcount

[konstantin magnus]

I would like to write

primvertexcount(0, @primnum)>4

directly inside the group field of a polyextrude node (expecting a substitute for $NVTX > 4). How can I make this work?

Edited June 15, 2017 by konstantin magnus

[Atom]

I think the problem with that approach is you are only going to get one primitive as your result, which is what $NVTX > 4 produces. The group field does not iterate through the @primnums. If you place code in a wrangle running over primitives you can collect up all primitives that match the IF statement. Then just reference that group name in the polyextrude.

Edited June 15, 2017 by Atom

[acey195]

 

On 6/15/2017 at 11:05 PM, Atom said:

(image)

you can also just type:

@group_toExtrude = (primvertexcount(0, @primnum) < 4); //this is safer because the group will always be created (even if it is empty) that way you do not have issues using the groupPromote operation for instance

//or even simpler (run over prims):

@group_toExtrude = (@numvtx < 4);