Pixel Drawing and Flood filling

Pixel Drawing and Floodfilling

By using pixel drawing tools, raster lines can be drawn and erased on monochrome, greyscale, and colour images.
When working with monochrome images, these tools allow users to draw with the foreground colour or erase with the background colour. When working with colour or greyscale images, a colour (or grey tone) can be selected to use for drawing.
Floodfilling tools work on both monochrome and colour images. They allow the filling of closed raster outlines with the raster object colour (foreground) and also to erase isolated raster objects by filling them with the raster background colour.
 For more information on floodfilling on colour images see Color Flood Fill .
 Note: Select the images to be processed with the above commands. Otherwise the commands will be applied to all raster images located under the cursor, if they are visible and reside on unlocked layers.

To draw on raster images

1. Choose the Raster > Pencil command from the Draw menu or press the button on the Draw toolbar.
2. Open the Inspector to set Pen Width and colour. Type the width value in the corresponding box. Select the required colour from the list of Pen Colour.
3. The raster line will be displayed as follows: with foreground colour on monochrome images; with one of grey tones corresponding to the brightness of the selected colour on greyscale images; with the selected colour on colour images.

To erase on raster images

1. Choose the Raster > Eraser command from the Draw menu or press the button on the Draw toolbar.
2. Open the Inspector to set Pen Width colour. Type the width value in the corresponding box. Select the required colour from the dropping down list of Pen Colour.
3. The raster line will be displayed as follows: with foreground colour on monochrome images; with one of grey tones corresponding to the brightness of the selected colour on greyscale images; with the selected colour on colour images.

To floodfill closed outlines

1. Choose the Raster > Flood Fill command from the Draw menu or press the button on the Draw toolbar.
2. Specify a point within a closed outline on a monochrome raster image.

To erase by floodfilling

1. Choose the Raster > Flood Erase command from the Draw menu or press the button on the Draw toolbar.
2. Specify any point in the isolated raster area to be erased.