Meshlab polycrunching produces some weirdness

alexk

Anyone use Meshlab to polycrunch their models? I use the Quadratic Edge Collapse Decimation which works well except that it often produces these nasty overlapping, very difficult to fix placement of vertices. Here's a screen... The dark red is the overlapping faces, and also the settings I use. I don't know how to get Meshlabs to stop polycrunching it like that.. any suggestions?

TSM

What happens if you preserve the normal and / or disable post-simplification cleaning?

alexk

when I check preserve normal, the process is very slow and locks up about 1/4 of the way through and I need to ctrl+alt+delete end proccess the Meshlab program. Disabling post-simplification doesn't really seem to do much, will still have overlaping faces, just in different places.

CodeFather

I found that models without UVs are importing and processing much faster. Anyway, meshlabs is working quite good for me, I didn't notice any overlaps at all .Maybe you are reducing the polycount pretty extreme... try optimizing gradually at several steps

MikeF

i also get this problem, i'm having a bit more luck by starting with a lesser quadratic edge desimation then moving on to clustering decimation.

overall though, smaller increments always work best, especially since theres no undo

arrangemonk

have anyone tried "reconstruct subdiv" in zbrush to reduce the models?
i mean if there are no tris it shoudl work