TITLE: RISO PRESS — two-color poster maker
PROMPT: Create 'RISO PRESS', a two-color risograph poster generator: a paper stock base (subtle fiber), one ink layer from classic riso fluorescent hues (fluoro pink, orange, blue, medium blue, green, yellow) and a misregistration slider that offsets the second layer with authentic drift and grain (multiply blend, speckle noise); a poster canvas with a big editable headline, a shape mark (sun, wave, arch, eye) and a date line. Interactions: typing updates the poster instantly; ink chips restock colors; the misregistration slider drags layers apart and back; ROLL PRINT animates the poster printing bar-by-bar with roller sounds (WebAudio, gesture-gated, mutable); grain amount adjustable; EXPORT downloads a PNG. Printshop romance, imperfect on purpose.
DESCRIPTION: A dark print studio with a paper-grained A-series poster on the press bed. Two multiply-blended ink passes: pass one lays a bold shape mark (12-ray sun, layered wave, negative-space arch, or blinking eye) in ink 1; pass two lays the 900-weight wrapped headline and a letterspaced date line in ink 2, drifting off-register by an adjustable 0–20px with a hint of rotation — the second layer visibly slides as you drag misregistration. Eight authentic riso ink chips (fluoro pink, orange, blue, yellow, medium blue, green, violet), generated canvas speckle grain over the whole sheet, a ROLL PRINT pass with traveling pressure bar, poster shake and filtered-noise roller rumble, and PNG export that recomposes both SVG passes with multiply blending.
TECHNIQUES: dual SVG layers with mix-blend-mode:multiply, misregistration transforms (translate+rotate) on the second pass, hand-authored SVG shape library, text wrapping into 9-char poster lines, canvas-generated speckle grain via toDataURL background, animated pressure-bar print cycle with WebAudio filtered noise roller, SVG-serialization PNG export with multiply compositing, paper stock grain.
INTERACTION: Type a headline (18 chars) and both passes update; ink chips restock either layer; shape buttons swap the mark; misregistration and grain sliders drag the print into (im)perfection; ROLL PRINT runs the full drum pass with sound; EXPORT downloads the composed poster.