Alphas or Stencils

[Kevin]

If you wanted to apply an alpha to just part of a three-d object, like one side of a box, how would you do it? Or is that what the stencil tool is for?

Thanks.

[Gary Komar]

kevin,heres a quick script showing just that good subject you brought up. had to try it.let me know if any probs (defualt script,cui issues?)alpha masking.zip (http://www2.zbrushcentral.com/uploaded_from_zbc/200305/user_file-1054000610qge.zip)

[Lobo69]

Gary, what method are you using to draw the star on the cube? Thats the part I'm missing.

Lobo

[Frenchy Pilou]

Hi Lobo
Gary will correct me if I am wrong :)
:b3: When you are in edit Mode "T" choose any Alpha (here a star)
:b3: Press the Control Key (Ctrl)
:b3: Place your mouse out of the cube and drag it
:: The star is drawing on the cube :cool:
(you can draw anywhere you wish, but you must begin out of the cube ! )
:b3: Clear the impurity with same method but with the alpha 0
:b3: Inverse the Selection
:b3: Apply any deformation (here Inflate)
That's all
Have Happy Zbrushing :cool:
Pilou
Ps For see all that
you can decrease the speed of Zscript and enable "Show Action" :)

[Frenchy Pilou]

Hi Kevin
For the Stencil Use look at the Script Primers inside Zbrush :)
With the Gary method above you can draw just one star (and not absolutly anywhere as you want and with any size)
So You must use a stencil for place and size but with it will be just "painting" so for a 3D model it's not the solution !
The real solution for a 3DModel is a mix of Alpha & Stencil :)
Example you want many stars in 3D on a real Model3D on one face
follows this steps
:b3: Create your cube3D
:b3: Take a front view in a wish size
:b3: Draw a similar "square" upper with Brush paint + alpha 0 + Zadd off + Rgb Only + Drag Rect
:b3: Use the Stencil for drawing any alpha mask :Place and size with the "Space Bar" + PaintBrush Flat color 0
:b3: Grabb it = :: you have now the Alpha with many stars :)
:b3: Apply the above "Mask Gary" method post = :: you have a realy model3D with many stars on a face or 2 :cool:
Have Happy Zbrushing 3D Modeling !
Pilou
http://www2.zbrushcentral.com/uploaded_from_zbc/200305/user_image-1054034742qzs.jpg

[Gary Komar]

thanks for explaining frenchy your also genious? or maybe alternate moderator if aurick ever out ill.

[Frenchy Pilou]

I am just on the old continent :)
So When Aurick is sleeping I can make some playing with Zbrush :D
pilou

[Kevin]

Just checked back. Thanks for all the response. I'll give it a go. Thanks again.

[Kevin]

Thanks, I got to try this and I got it to work. Hooray! Thanks again.

Just curious,...why did we set the draw size to 1 in the script?

[Frenchy Pilou]

Hi Kevin
In general when the draw size is "1" it's for just choose one point in Edit Mode
or make a precise move. It's a reduction to the minimum of an "influence sphere"
With Zspheres work it's quasi indispensable !
In this Script I don't remember :rolleyes:
Have funny Masking & Stenciling :cool:
Pilou