Radial Dither

Create a 1-bit radial gradient with concentric square rings.

Logic: The grid is divided into concentric square "rings" based on distance from the center. Each ring is assigned a probability value that decreases from center (100%) to outer edges.

Two filling methods are available: Probabilistic mode rolls dice independently for each cell based on its ring's probability, while Deterministic mode fills exactly the calculated percentage of cells in each ring by randomly selecting which specific cells to fill.

There are five distribution methods that determine the probability in each row.

Graph for 10×10 grid (5 rings):