18 / 25·Shaders
AURORA
Arctic sky lodge. Curtains of light, driven by the Kp index.
About the work
An Arctic lodge whose sky is a three-layer fBm curtain shader. A Kp-index control does what geomagnetic activity does: higher indices widen the curtains, push them toward the horizon and let violet into the palette.
How it was made
The reference was spectral: oxygen green at 557.7nm, nitrogen violet when activity climbs. The Kp control maps to physical behavior rather than a color fade, which is why a storm at Kp 8 feels categorically different from a quiet arc at Kp 2.
Like every work in the exhibition, it passed three full iteration passes — a visual critique, a deepening pass, and a QA pass at 390px with reduced motion and zero console errors — and documents itself in its own build guide.
Key features
- Three independently drifting fBm curtain layers
- Kp slider scaling extent, width and spectral mix physically
- Star field and horizon line calibrated to arctic latitude
- Palette drawn from real auroral emission lines
Technology
- GLSL
- fBm noise
- three.js
In its own light
