URL details: observablehq.com/@mourner/martin-real-time-rtin-terrain-mesh
URL title:
MARTINI: Real-Time RTIN Terrain Mesh / Volodymyr Agafonkin / Observable
URL description:
To render terrain in 3D, you need a triangular mesh — a set of 3D triangles representing the surface. The easiest way to get one from height data is a uniform grid (two triangles per pixel), but that's a lot of triangles. For fast rendering, we want to reduce this amount by adapting the mesh to the surface — using bigger triangles in relatively smooth areas, and smaller ones where there's a lot of detail. One such approach, proposed by Will Evans et al. in 1997, is called Right-Triangulated I
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