Browser-based Kerr black hole visualizer with geodesic raymarching and generative score.
Kerr renders a spinning black hole by tracing null geodesics through curved spacetime using adaptive-step RK2 integration, producing the photon ring and Einstein ring as natural simulation outputs rather than hand-drawn effects. The accretion disk is physically modeled with Keplerian shear, relativistic beaming, Doppler shift, gravitational redshift, and blackbody coloring by temperature. A generative score for pipe organ, strings, choir, and percussion plays through a Web Audio signal graph, and the visualizer can drive itself from any uploaded audio file via FFT onset detection. Everything runs in the browser with no video or audio assets, making relativistic astrophysics tangible and beautiful in a single 134KB page.
View on GitHub →cloakyard/kerr