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zbrush 4 r3 dynamesh subtract issues

ZBrush Usage Questions
#1

howdy,

so i’ve noticed that there were some issues with the dynamesh subtract functionality in r2 but i’m finding the same and more issues in r3 and i just wanted to confirm whether this is a known thing or whether i’m doing something wrong.

  1. ALT-INSERT or ALT clay tubes works but for clay tubes, it only works if i dynamesh subtract immediately after drawing - if i edit the curve, the polyframe goes from white(subtract) to a different color and when i remesh, i add instead of subtract.

  2. many times i’ve tried with a dynamesh sphere right now, the process subtracts the sphere from the clay tubes and not the other way around… is there a way to specify which mesh gets left?

  3. the buttons in the dynamesh tray “sub” and “and” don’t do anything but add. what are these buttons supposed to do? how are they supposed to be used?

thanks.

jin

#2

I’m having the same issue as number 3 on your list there, I have 2 dynamesh subtools, I want to subtract one from the other, I’ve yet to get it to work, I’ve only been able to add them together so far. I get the same result using Add, Subtract and And. Hopefully an answer will come along soon :)/

#3

I was fairly sure this had been answered before. The buttons don’t do anything ‘yet’. If you want to subtract one tool from another. You need to clone the tool, then pick one of the insert brushes, in the modifiers tab, select your cloned tool. Then go to the tool you want to subtract from, Alt and click your mesh insert brush, adjust it to the size, position you want, then remesh. It should subtract. The only time this will be an issue is if the tool being subtracted from is higher resolution than the one subtracting.

#4

Thanks for the info Gordon, I did do a fair bit of searching on how to go about doing this, and ended up using polygroups, masks and transpose-subtract, that seemed to work for me in the end.

#5

ahhh,

discovered one of the issues with dynamesh subtract with curve tubes at least -

it’s a matter of poor documentation…

when you ALT-drag a curve tube, it will be white to subtract but as soon as you start fiddling with its shape, it will lose the white color and if you try dynameshing, it’s going to turn into a union.

the trick is-

THE LAST TOUCH on the curve tube must be with ALT selected… so you draw out a curve tube without ALT and then fiddle around with it. if you dynamesh, it will UNION. but if on the last manipulation, you hold down alt while touching the curve, it will subtract properly.