ZBrushCentral

Decimation Master odd problem

ZBrush Usage Questions
#1

So I’m using Decimation Master in ZB4 and have obtained some weird results as you can see below. This tool is comprised of four sub-tools which were all created using the Shadowbox and extensive use of the new Clipping brushes afterward.

When decimating the tool it at first looked fine (with a front-on view) but then when I turned it I saw some weird geometry “left-overs” sticking out. I’m thinking that because the clipping brushed don’t actually remove polygons is it possible that the decimation somehow “misses” the geometry to produce these errors? I have no idea, since I just don’t know enough about the programme to do anything but guess.

It made little difference on the amount of decimating I used or whether I did one or all subtools - the amount of odd geometry changed was the only difference.

Just wondering if anyone else has experienced anything like this or have a solution?

G
decimation master problem.jpg

#2

I did some tests and I have similar results. No problems if I decimate the items right from shadowbox, but when decimated after clipping, one of my meshes spiked.

Could you possibly decimate first and after that use the clipping brushes to sharpen the mesh? That seemed to work for me (or optionally using the Trim Front brush or the deformation Flatten option to sharpen the edges).

#3

Hello

Perhaps I could suggest that, before decimating, make a Remesh / Projet All sequence and decimate this cleaner geometry.

#4

Thanks for the replies. For this particular project I had to totally re-do the meshes in another programme since I couldn’t find a solution that worked. I’m not an expert with re-meshing and couldn’t get a tool with such clean lines again…

G

#5

I encourage you to see the video call ShadowBox and Clip Brushes (the 5th before the end) in
http://www.pixologic.com/zclassroom/homeroom/tutorial.php?lesson=zbrush4
In the end you will see a clear explanation of Remesh / Project all . In my opinion, it is the most easy and powerful mean to clean a mesh after clipping, before decimation, and very easy to do.

#6

Thanks, Steday, that helped my knowledge of Remeshing, particularly regarding using the Deformation options afterward. I’ve always found that edges of tools that had been remeshed were kind of “wrinkled” and this technique seems to get rid of that.

G