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Polar Coordinates Filter

Intro​

Remap Cartesian coordinates (x,y) to polar coordinates (r,θ\theta) to wrap an image around a central point.

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Move Align X all the way to the right and then increase/decrease the Width.

UI​

Common Attributes +

Sampling Quality - Controls how the image is sampled/interpolated. The options can be thought of as low to high quality from top to bottom and can be useful when working with fine details like text.

  • Nearest Neighbour – Uses the closest pixel without blending.
  • Bilinear – Blends between nearby pixels for smoother results. Good for general image scaling but can introduce a softness/blur.
  • Catmull–Rom – A high-quality resampling method that produces sharper results and preserves fine detail.
  • Mitchell – Balanced high-quality filtering.

Centre - Offset the polar origin from the Layer's centre.

Radius - Set the outer radius as a percentage of the Layer's shortest dimension.

Inner Radius - Push the Layer's bottom edge away from the Centre as a percentage of the Radius.

Rotation - Rotate the polar coordinates.

Angular Range - Set an angle to create a wedge of the circle.

Inside Out - Flip the mapping so the bottom of the source becomes the outer edge and the top maps to the pole.

Edge Feather - Feather the inner and outer circular edges.

Seam Feather - Feather the angular seam.