Displace in opposite directions using alpha brush?

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  04 April 2017
Displace in opposite directions using alpha brush?

There is some mode to use zadd+zsub using alpha brush?

In same mode as a displacement map can be mid grey (0.5) for neutral level, and use values <0.5 to displace opposite than >0.5.

I don't know if ZBrush support .exr for alpha brushes. So would be an option if reads float and negative values and could use them for the standard brush.
  04 April 2017
not sure your question,
for zadd you just drag and if you hold the ALT key down And drag then it zsub.

if you want to add more depth go to brush>depth
you can pretty much get the same effect if you move the Z-intensity slider (top middle under zadd+zsub)

for .exr all you have to do is select >alpha>import and see what is supported.
if you have up todate version then you will see .exr
  04 April 2017
Thanks for answering.

My question is about how to achieve a displace effect in opposite normal directions at same time sculpting with a brush.

Maybe exists specific brush to do it?

I've tried importing .exr containing a white area (1.0 for RGBA) plus other area in black with negative values (-1.0 for RGBA) as alpha mask, but it don't works as expected.
  04 April 2017
Originally Posted by AlbertoGz: There is some mode to use zadd+zsub using alpha brush?

try this
1fill the canvas ctrl+F
2select tool>simple brush
3 select a alpha shape
4 stroke>dragdot or dragrect
5 zadd on drag on the canvas
6 zsub on drag on the canvas
7 alpha>transfer >grab doc
you now have a alpha that you can use zadd+zsub at the same time and use it with sculpturing brushes.

if thats not what your looking for there is a option in alpha that works like zsub and zadd
this may cause a outer edge,that's why i just prefer just using zsub or zadd

if you use pure black and pure white you have more control on how much you want to zsub or zadd using the Z-intensity slider,
you dont need to change the rgb colors
it goes from 0,0,0 rgb to 255,255,255
if you change it like 1,1,1 to 250 you cant go lower then 1.1.1 and cant go higher then 250
now you limited your self,
you can get the 1.1.1 same effect by adjusting the Z-intensity slider with out having to change grey scale/ color tone

Last edited by informerman : 04 April 2017 at 01:32 AM.
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