triangular lattice, square lattice, point visibilitypic.twitter.com/0GFPtThNkV
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conjecture is that at every vertex of the quasicrystalline Penrose rhombus tiling, the fraction of visible points is constant. Vertex lists from http://fpmrt.riken.jp/public_html/sakai/penrose.html …
What software is used here? Is it a form of raytracer?
mathematica
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