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[Answered] Reverse Egineering ZBrush 4R6

ZBrush Usage Questions
#1

Hi,
I am new to ZBrush 4R6 and would like to do some reverse engineering.
The task I want to accomplish is to convert some large Triangle Polygon Files to QUADS.
There are a number of options in ZBrush and maybe some more that I do not know about (see below).

Could anyone provide me with step by step method of converting a Triangle file to an all Quad file without losing any detail?
I need Quads only in my next process out side ZBrush.

Second question is there a way in ZBrush to be able clear you current project and then to load a new one without a restart?

Import Options Mrg, Add, Tri2Quad by angle 0 to 90 and Weld
SubTool has Remesh options Res 16 to 1024 and Polish 0 to 100
Geometry has ZRemesher with many options
FreezeBorder, FreezeGroups, Target PolyCount 0 to 100, Half, Same, Double, Adapt with AdaptiveSize 0 to 100 and Curve Strength 0 to 100
Other items Use Polypaint, Modify Topology, Position, Size and MeshIntegrity

Thanks

#2

The best solution IMHO:

  • Load your original triangulated model (scan data?)
  • Duplicate it as a new SubTool (CTRL+SHIFT+D)
  • temporary hide the non active one (small eye icon in the SubTool list)
  • Go in Tool >> ZRemesher, the press the ZRemesher button without changing the settings. If you really wish a high density, eventually increase the target polycount slider, but it may be not necessary. Please read the next step if you think that you will lose details with a low polycount.
  • Now, Go in Tool >> Geometry, then subdivide by pressing the Divide button (CTRL+D) your model until its polycount is approximately equal to the polygon count of your original triangulated model. You can hover the model in the SubTool list to display the models stats.
  • Make your original model visibility back to visible in the SubTool list.
  • Go in Tool >> SubTool palette and open the Project All group UI. Change the Dist slider from 0.02 to 0.04 and press the project button. After few seconds (minutes?), all the details from the original model should have been transferred to the new topology.
  • Hide the original model to inspect the projection and see if some parts need some manual rework or if eventually the projection didn’t worked as expected because of a too low or too high value for the Dist slider.

Second question: Preferences >> Init ZBrush or simple load a new ZProject (CTRL+O)

I hope that it will help you and answer your questions :slight_smile: