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Brush Tip Shape has one interesting
setting: Spacing. It is usually around 20-25% but when you set it larger
than 100-150% you will get very different result.
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Using Shape Dynamics checkbox, you can randomize sizes and angles of brush dots.
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Using Scattering, you can randomize
locations of brush dots - as you draw a straight stroke, dots are added
randomly around your mouse.
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You can use Count setting to control amount of dots.
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Dual Brush is very interesting feature,
which will get you very different results depending on which brush and
which mode you choose. Compare the two lines on this screenshot - first
line made with simple brush, second - with Dual Brush enabled.
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You can use Color Dynamics to randomize (or fade, or control with tablet pen) brush color. I do not use this often, though :-)
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Wet Edges is simple and self-explanatory feature :-)
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The most exciting thing is that you can
easily create your own brush. Let's make a star brush for example.
Create new image with transparent background (square for our star). Set
foreground color to Black, switch to Shape tool (U), select Polygon tool
on toolbar, open Polygon options, check Star checkbox, set Indent sides
= around 90%, and sides = 4.
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Draw a shape, rasterize it (Layer - Rasterize - Shape). Select all (Ctrl-A).
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Go to Edit menu - Define Brush preset. Choose name for new brush, click OK.
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Now, when you open Brushes palette window (from Window menu), you can see your new brush in Brush Tip Shape list.
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Now you can enable and adjust Size Jitter, Scattering and Color Jitter, and with single mouse move, get result such as this!
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Another example - I took the shape of snow
flake, created brush preset from it. With Size Jitter, Scattering and
Color Jitter, this is what single brush stroke looks like.
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And another example - heart-shaped brush. Again, this screenshot made with only one brush move!
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