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6. The Tools in the Toolbox / 6.3 Tools for Image Layers

### 6.3.11 Flood Fill

This tool is used for filling parts of an image with the foreground color. It works like the wand. If you click on an image, the area with a color similar to the clicked point will be filled.

It has the normal settings for adjusting the intensity and for setting the color channels that will be modified.

There is also the Tolerance slider, which controls how different colors may be to be considered similar.

Clicking will fill with the set tolerance. Click+drag allows to adjust the tolerance.

Especially useful for comic drawers are the options Source and Overfill. Source controls which layers are used to determine which area to fill. This way comic drawers can create the outlines of their drawings by using vector tools on one layer, and fill them by using Flood Fill on another. Vector and text is usually drawn antialiased which may lead to small, one pixel wide, holes in the filling. In order to avoid this Overfill enlarges the filling area by one pixel and these holes disappear.

If you activate Create Vector Layer, the active image layer is not changed, but a new vector layer is created above the image layer allowing the fill color to be adjusted later. This is particularly useful if you want to use patterns or gradients.

A quick way to set the foreground color is holding Alt and clicking into the image. By doing so the settings of the color picker (see chapter 6.2.18) are used.