GARGANTUA — Schwarzschild Black Hole Raytracer

Build a real-time black hole raytracer called 'GARGANTUA' as a single static page. Render a Schwarzschild black hole with null-geodesic raytracing: a bent star field, a glowing accretion disk with Doppler beaming, and photon-ring highlights. Provide cinematic, poster, edge, and polar camera presets plus an auto cinematic sequence, orbit and zoom controls, and a HUD with mission elapsed time, observer distance, disk inclination, geodesic steps, render profile, and frame rate. Let the viewer adjust observer distance, disk inclination, geodesic step count, spin, and render quality from a params panel, with keyboard shortcuts for views, cinematic mode, params, sound, and HUD.

Build a real-time black hole raytracer called 'GARGANTUA' as a single static page. Render a Schwarzschild black hole with null-geodesic raytracing: a bent star field, a glowing accretion disk with Doppler beaming, and photon-ring highlights. Add a time-dilation readout: a probe that can be dropped toward the horizon while twin clocks compare probe proper time with the distant observer's clock, slowing and redshifting the probe's beacon as it falls. Provide cinematic, poster, edge, and polar camera presets plus an auto cinematic sequence, orbit and zoom controls, and a HUD with mission elapsed time, observer distance, disk inclination, geodesic steps, render profile, and frame rate. Let the viewer adjust observer distance, disk inclination, geodesic step count, and render quality from a params panel, with keyboard shortcuts for views, cinematic mode, params, sound, and HUD.