# This code example visualize a voronoi cell. 
# You may add other points in the point matrix.
$m= new Matrix(<<".");
1 0 0 0
1 2 0 0
1 0 2 0
1 0 0 2
1 -2 0 0
1 0 -2 0
1 0 0 -2
1 1 1 0
1 -1 -1 0
1 -1 1 0
1 1 -1 0
1 1 0 1
1 -1 0 -1
1 1 0 -1
1 -1 0 1
1 0 1 1
1 0 -1 -1
1 0 1 -1
1 0 -1 1
.
$v = new VoronoiDiagram(SITES=>$m);
$lattice = $v->VISUAL_VORONOI->elements->[1];
threejs(compose(catalan_solid("rhombic_dodecahedron")->VISUAL(VertexLabels=>"hidden"), $lattice));