Earth-textured sphere in Nil geometry, distorted by the non-commutative Heisenberg metric
Raymarching in Nil geometry with an earth-textured sphere. The Nil metric distorts the appearance of the sphere as viewed along different geodesics. Nil is a twisted geometry where horizontal translations do not commute, causing a characteristic helical distortion of the visual field.
Controls: WASD to rotate, arrow keys to translate.
