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<h1>Brush Tools</h1>
<p>Brush tools are all tools, which use a "brush track". You usually draw strokes on some layer and a brush tool edits pixels allong your strokes.
It can be a Brush, an Eraser, a Smudge tool etc. When there is a selection, the tool edits only pixels within this selection.</p>
<p>Each brush tool uses a specific <b>brush</b>, which is the first item in the top menu.</p>
<img src="https://i.imgur.com/2JfzrSN.png" />
<p>A brush has a track shape (e.g. a circle, a square or a more complex pattern)
and behaviour (it can change the shape while you draw, e.g. change the track size).
Photopea has a default collection of brushes, but you can import your own brushes in the ABR format into Photopea using File - Open.</p>
<p>Every brush tool usually draws a stroke by drawing many brush shapes (e.g. circles) next to one another,
along the movement of your mouse or other pointing device.</p>
<img src="https://i.imgur.com/QL9dm22.png" />
<p>It means, that there are actually no "lines", just copies of the same shape, that are tightly
squeezed next to each other, which create a look of a continuous line.</p>
<p>There are two kinds of brush shapes:</p>
<ul>
<li><b>Circular</b> - generated as a circle, can have arbitrary size</li>
<li><b>Pattern</b> - made with a raster image. They get pixelated, when the size is too large</li>
</ul>
<p>Each brush has a <b>Size</b> property, which measn "the thickness of the line".
Circular brushes have a <b>Hardness</b> property in addition, which generates a soft edge of the circle.</p>
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<h2>Brush panel</h2>
<p>More brush options are available in a <b>brush panel</b>. You can open it using Window - Brush.
Here are several sections of properties. You can see the result of your brush settings on the bottom of it.</p>
<p>At the top of the brush panel, there is a gallery of predefined brushes. Choosing one of them will replace your current brush settings.<p>
<img src="https://i.imgur.com/qd8A3Jj.png" />
<p>Here is a brief description of each section of the brush panel. We recommend to play with settings to discover them by yourself.</p>
<ul>
<li><b>Tip Shape</b> - parameters of a static brush
<ul>
<li>Angle - rotates the shape</li>
<li>Roundness - squeezes the shape</li>
<li>Spacing - spacing between consequent "shapes" of a stroke. Set it to 25% or less to make a "continuous" line.</li>
</ul>
</li>
<li><b>Tip dynamics</b> - allows you to use random values of Size, Angle and Roundness along the stroke</li>
<li><b>Scatter</b> - lets you put move each shape to the random place near the original position. You can make an effect of "fallen leaves"</li>
<li><b>Color Dynamics</b> - lets you change the color of each shape randomly along the stroke</li>
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