4.12. Polar Coords

4.12. Polar Coords
	4. Distort Filters

图 16.62. Example for Polar Coords filter

Original image

“Polar Coords” filter applied

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

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

图 16.63. “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 controls 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.

图 16.64. With text

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

图 16.65. With two horizontal bars