Where The Palm Landed

降龙十八掌 · 凌空一掌 — an old master gathers himself, leaps seven metres off a dry lakebed, turns over at the top and drives one palm straight down. What is left is an eight-metre handprint pressed into the earth, fingers and thumb and all. The ground under the impact is its own 200,000-vertex mesh that never moves on the CPU: the handprint is a signed distance field (a rounded palm smooth-minned to five capsules) and the shock ripple is a decaying travelling sine, both evaluated in the vertex shader, with the surface normal taken from finite differences of the same function. The crust is a wrapped Voronoi — F2 minus F1 gives the mud polygons — and inside the print it swaps to unbleached earth, because the crust is gone there. Nothing is loaded: no meshes, no textures, no audio files. A 12 second directed sequence plays on loop, ending on the reveal from above. Press F for a free camera (drag to orbit, scroll to zoom), R to replay, space to pause, S for slow motion. Sound is synthesised with WebAudio and wakes on your first click. three.js r185 is bundled; there are no other dependencies.

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