Hello, im having issues to zremesh a boolean mesh after i applied the sub boolean. The mesh produced from boolean to mesh is about 4.480mill, and if i apply detect edge will no remesh right , if i crease and add polygroup and press detect creases, will no zremesh. I look at video and for them it work , there is a limit in how many object can be subtract in boolean operation.
If i have groups and creases in my 4milion mesh why, it destroy it when zremesh and dont keep the flow of the edges and give nice sharp edge? Thanks
Hello @rai_scarfo
There is no auto-retopology magic button to create optimal low poly hard surface topology of the quality a human would produce from a high poly mesh. It’s a process, a developed skill, and some cases may still require manual retopology. Highly optimized animation quality topology, or complex hard surface shapes with minimal polygons may both still require manual retopo.
However, ZRemesher can produce good results if your mesh shape isn’t overly complex. I find it’s best to pick one strategy for doing this, and not to activate multiple edge detection options at once (for instance, keep groups, detect edges, or keep creases, but not all at once) . Ticking multiple options may conflict with one another, and will increase the performance burden of ZRemesher, and the amount of memory and time required to complete.
I get the best result by first making sure every surface that is to be separated from another by a hard edge is a separate polygroup, and using the “Keep Groups” option. Then ZRemesher will do a much better job of drawing edges between the polygroup borders. It also has the benefit of allowing you to quickly establish creasing between the polygroup borders afterward with Tool> Geometry> Creases> Crease PG. You will need creasing if you wish to then subdivide the resulting mesh for any reason, and keep those edges hard when subdivision smoothing is applied.
As to why ZRemesher is not completing at all when certain options are applied, keep in mind the point I made above about not enabling multiple edge strategies at once. Otherwise this may have to do with a lack of available system RAM, or something problematic with the mesh itself. But you have not provided the type of information required to guess at those things (uncropped screenshots of the mesh inside of Zbrush, for instance).
Remember, ZRemesher is only aiming to produce “good enough” topology for many casual uses. Trying to chase perfect results with it is usually a waste of time. Better to use ZRemesher to get close, and then just touch up the problem areas manually with the Topology brush or Zmodeler.
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