Raphael Finkelborn 1951
The quadtree, 1974
American computer scientist who with Jon Bentley introduced the quadtree in 1974: a square split into four, and each quarter split again wherever it is crowded.
Nested rooms hold quarter-circle currents. Changing scales and orientations turn a recursive grid into a rhythmic architectural engraving.
Raphael Finkel & Jon Bentley, quadtrees, 1974

A quadtree recursively splits squares into four smaller rooms. Concentric currents originate at seeded corners and are clipped to each room. A gentle harmonic ripple bends the arcs as the animation loops.
Behind the mathematics
The quadtree, 1974
American computer scientist who with Jon Bentley introduced the quadtree in 1974: a square split into four, and each quarter split again wherever it is crowded.
The quadtree, 1974
American computer scientist and author of Programming Pearls, who with Raphael Finkel introduced the quadtree in 1974.