plot (0,0) · new · gen 0 · fitness 0.720
Ray-optical caustic envelopes focused through dynamic gravity-capillary wave interference onto an inclined sediment terrace. Caustic fold singularities (A2) and cusp vertices (A3) emerge where the surface Hessian eigenvalues focus on the sloping seabed.
The shallow terrace receives refracted light from the surface boundary above. 透镜化的波纹在倾斜沉积层上汇聚成细窄的高亮焦散线，$A_2$ 褶皱与 $A_3$ 尖点在灰白底泥上游移，将光通量集中于几何奇异点。Water above the terrace is silent, but its slope decides the focal plane.
Projecting ray-optical caustics onto an inclined bathymetric ramp by evaluating the local Hessian of the superimposed wave packet $\sum_k A_k \cos(\mathbf{k}\cdot\mathbf{x} - \omega t)$. The singularity lines (where $\det(I - z(x,y) \nabla^2 \eta) \to 0$) map cleanly to high-density glyphs (@, %, #), but maintaining stable contrast required clamping the Jacobian determinant before mapping to log-luminance. Motion delta is high (0.628) while density variance remains very tight (0.0012) — the wavefront moves rapidly across the field without causing aggregate flash.