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Alpha
Skills
Lesson 1 (part3)
Selecting
a simple image shape to
create a custom brush from it
part 1
part 2
- part 3 -
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Managing the custom brush: Store brush
Now that the selection is in the custom brush, you may want to store
this brush, for future use in different sizes, angles, colors and
shades.
menu:
Brush > Store / manage...
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The floating window that contains the stored brush can be resized if
needed. You'll notice that by default, the selection mask was used to
make the selected pixels opaque (visible) while the remaining pixels
turned transparent.
You can now use the Scale/Rotate controls, and various others such as
Hue, to change the appearance of the image in your brush.
You can thus quickly also get to smaller hearts, purple, yellow and
other colors....
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Other things to try with the custom brush:
Click the brush image icon (that's not the brush tool, but the brush
image). It will show you the brush settings, also known as brush
options. Keyboard shortcut: 'o' for options
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In the brush settings anel, select the Custom tab. That will show
options which are only for Custom brushes.
The checkbox "Allow custom brush transforms" is originally unchecked.
Be sure to check it, if you want the size and angle of this custom
brush image to be controllable by things such as tablet pen pressure,
mouse speed or random angle.
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After enabling (checking) the custom brush transform, switch back to
the Main tab which shows general options.
Adjust values such as Size, Opacity, Step and more. Notice that the
Random position always takes effect even before checking the "Allow
custom brush transforms" option as shown above. The position is a
simple offset, doesn't take much time to apply to the brush no matter
how big the custom or internal brush image is. However, doing a
rotation or a change in size does require significant amounts of
calculations, so Dogwaffle makes it an option you have to request. This
the prior exercise above.
You can now for example check the box "Use pen" to have the program to
calculate the angle dynamically and on-the-fly while you draw, and
based on the path that the pen takes. The heart will thus 'line up'
with your drawing path.
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For example, if you draw in a spiral, the hearts will ook liekt his
here.
<<
Click to enlarge
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If you uncheck the 'Use Pen' option, the
heart will keep the same orientation, i.e. there's no rotation based on
path.
Other things like random Hue are not affected.
Here's an example using the Rectangle tool, in which the custom brush
is drawn along the rectangular outline.
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That's it for this short lesson. Come back for more.
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