Hi people, I just started to mess up with COP2net, got a question about the order of the trace SOP.

say I put a bunch of spuare shape compositing nodes side by side, and simply trace this COP2net to get polygon mesh. like in the image.

The thing bugs me is, what determines the order of tracing? the primitive numbers of the traced polygon is in a different sequence than the order of the shape nodes, which ruins the goal of visualization in my particular project.

and I didn't find any parameter to tweak the orders…

any hint?
thanks

you can use Sort SOP in Primitive mode to reorder traced primitives any way you want (when sorting by X, Y, Z, Proximity or Along Vector, primitive's centroid is determining)

Essentially, when you combine all the shapes into an image, you lose the ordering information (it's now just an RGBA image to the Trace SOP). If you want to maintain a specific ordering, you could trace each shape node individually using a number of Trace SOPs, then use a merge SOP to combine the trace SOPs in the order you want.

thanks guys , I'll just use a sort SOP