TITLE: LUMEN SANCTUM — generative stained glass
PROMPT: Create 'LUMEN SANCTUM', a generative stained-glass cathedral window: a great pointed-arch window filled by recursive geometric subdivision into leaded glass panels, each panel a luminous gradient (deep cobalt, ruby, amber, violet) with a lead came lattice and subtle glass graining; animated light shafts and drifting dust motes fall through; the sun slowly travels, regrading the window's inner light. Palette: stone gray surround, jewel glass. Interactions: REGENERATE reseeds a new window every time (different subdivision and palette balance); a sun-position arc re-lights the panels interactively; clicking a panel zooms it with its color-name plaque; an organ drone swells gently when you hold a chord on your keyboard (WebAudio, gesture-gated). Sacred geometry, luminous, monumental.
DESCRIPTION: A monumental pointed-arch window generated fresh on every visit: the arch polygon is recursively subdivided along jittered cut lines into 20–40 leaded panels, each filled with a directional jewel gradient (cobalt/ruby/amber/violet families) whose brightness follows distance from a virtual sun, plus glass grain speckle and double-stroked lead came borders over a dark stone surround. Rotating light shafts and drifting dust motes fall through the window (screen-blended gradient columns and rising particle field); the SUN slider moves the light source across the sky, re-lighting every panel and swinging the shafts. Clicking a panel flashes it brighter (a zoom-plaque gesture); holding keys A–K sustains a two-partial organ drone through a lowpass (gesture-gated, released on keyup); REGENERATE reseeds an entirely new window.
TECHNIQUES: seeded LCG with recursive polygon subdivision on the arch path, per-panel linear gradients with sun-distance brightness mapping, point-in-polygon hit testing, screen-blended volumetric light shafts driven by CSS transforms, mote particle field, WebAudio sawtooth+sine organ chord on held keys.
INTERACTION: Drag the sun slider to re-light the window and swing the shafts; REGENERATE grows a new rose; hold A–K for the organ drone; click panels to flash them.