Geometry

Polar

A move into polar coordinates: rows become rings.

Polar: a geometry effect on the built-in sample photograph. Computed on your machine right now.
Open Polar in the studio

Controls

mode
To-polar rolls the rectangle into a circle — a column becomes a ray, a row a ring. From-polar unrolls it back
center X
A number from 0 to 1, 0.5 by default.
center Y
A number from 0 to 1, 0.5 by default.
rotation
Turns the picture around the centre. Positive goes clockwise, with zero pointing up
repeat
How many times the picture goes round the circle. Whole numbers only, or the seam at the full turn would not meet
zoom
Radius of the circle against the frame. At one it fits inside; higher pushes it past the corners, lower pulls it into a rosette

Starting points

Nearby in Geometry