Hi!

I have a mesh composed of many parts. It has big, small, highpoly, lowpoly geos. Once I pass it through a polyreduce, some parts disappear (most likely because they are too low res already).

Its super important that I keep at least 1 polygon per part. Any way of forcing it?

I'm currently using the Preserve Quads and reducing by percentage (10%).

-Olivier

There are other ways but you could create a group based on a primitive count thresshold inside a for loop and give that to Polyreduce.

Could you use the "Preserve Features" with "Hard Points"? Select 1 prim per object, promote it to a point group, then feed it into polyReduce?

Alternatively, I think Siavash's solution would work quite well. Some form of filtering out the pieces that are already low-res enough then only poly reducing the rest. You might also be able to do this via polygon perimeter if they're relatively even vs polycount.