Astrolabe

What it is

An astrolabe, the medieval computer of the heavens, seen face-on: the mater engraved with its degree scale and the hours in Roman numerals, the plate with its circles of altitude, the open-work rete turning over it with its ring of the zodiac and pointers to the stars, and the alidade, the sighting rule, sweeping across as if lining up each star in turn. Choose the metal, how many stars the rete points to, the turns per loop, the seed, the backdrop and whether the camera sways.

Reuse it in your own idea

• Astronomy title: Brass, twelve stars.
• Night-sky scene: Silver, night blue.
• Luxury craft loop: Gold, many stars.

Which part is reusable

src/astrolabe-align.js is the ingredient your AI reuses. demo.js is only the example scene around it, and uses chrome-material only for the demo.

Good to know

• The plate's circles are a stylised projection, not an exact stereographic chart for a latitude.
• The rete's pointers do not point at real stars.