10.8. Polar Coords

10.8. Polar Coords
	10. Distort filters

Figure 15.145. Example for Polar Coords filter

Original image

“Polar Coords” filter applied

You can find this filter through Filters → Distorts → Polar Coords.

It gives a circular or a rectangular representation of your image with all the possible intermediates between both.

Figure 15.146. “Polar Coords” filter options

Preview: The result of your settings will appear in the Preview without affecting the image until you click on OK.
Circle Depth in Percent: Slider and input box allow you to set the "circularity" of the transformation, from rectangle (0%) to circle (100%).
Offset Angle: This option controlles the angle the drawing will start from (0 - 359°), and so turns it around the circle center.
Map Backwards: When this option is checked, the drawing will start from the right instead of the left.
Map from Top: If unchecked, the mapping will put the bottom row in the middle and the top row on the outside. If checked, it will be the opposite.
To Polar: If unchecked, the image will be circularly mapped into a rectangle (odd effect). If checked, the image will be mapped into a circle.

Figure 15.147. With text

If you have just written the text, you must Flatten the image before using the filter.

Figure 15.148. With two horizontal bars