ZBrushCentral

Alphas don't work with move -brushes???

ZBrush Usage Questions
#1

Hello,

I tried to deform a part of a plane with the move brush spherical:
I set the focal shift to -100 and wanted to use an alpha with a spherical color-decrease from white to middle grey. I intended to get a spherical deformation. But I didn’t. I got the same deformation which I get, when I don’t use an alpha.

So I tried different alphas in combination with the move brushes. With all types of alphas I tried, I got the same result. With the standars-brush, I got the expected rsults of my alphas.

So my question:
Is it intended, that he brush-aplhas have no effect on move brushes or is this a known bug?

Of course, I tried this after after initiallizing my zbrush to get the default settings. I got always the same results.

mawag

#2

As far as I am aware Alpha’s dont work with move brushes, i may be wrong as i am fairly new to it all.

What is it exactly that your trying to do? can you include a picture maybe?

DM

#3

I don’t think, that a picture gives more explanation:

Imagine, you have a flat side of a figure and the flat surface has a nearly oval border.
You now want to EXACTLY deform the flat side into a spherical form.

The normal move-brush is here quite well, with the standarsettings, because it deforms the flat plane in center more than at the border. But the deformation is not exactly spherical, as e.g. needed for optical uses (like for lenses).

So I intended, to change the settings of the focal shift to -100 to get the same strength of the move-brush over the complete action-range of the brush and combine this brush modified with an alpha with a spherical color-degree from white to grey.

Of course, I can CREATE a spherical surface in other ways, but I don’T want to CREATE, I want to MODIFY because I want to use the result as morph-target. Think about glasses without optical correction (flat glasses), which can be morphed into optical glasses with different correction.

mawag01