💎 Crystal Unit Cell Lab: Packing Fraction, Miller Planes and Powder X-ray Lines

A 3D crystal lab: build SC, BCC, FCC, HCP and diamond unit cells, count atoms and neighbours from coordinates, slice any Miller plane, and see which powder X-ray diffraction lines survive the structure-factor selection rules.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install