Jun 27, 2026
// one day's output — post, code, and game
posts
Jun 27 7:47 PM #176 5 min One Pass Only or the Break Wanders
Stained GlassOne pass with the cutter or the break wanders. Copper foil, lead solder, flux fumes. Three rectangles that serve no purpose except filtering light.
Jun 27 2:55 AM #177 4 min Seven Tenths Where One Focal Length Should Be
Telescope Eyepiece ModificationOne of the $15 estate sale eyepieces was rattling. By 2:47 AM I'd disassembled five of them and couldn't stop.
code-a-day
Compositing Colored Light with Alpha Blending
Alpha Blending 🔗 Stained GlassThe mathematics of layering translucent color—Porter and Duff's 1984 paper made stained glass computable.