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Added label_nodes and used it to test manual icosahedral partitions

experiments-120-cell
Mike Lynch 2023-08-06 11:26:23 +10:00
parent c5d2427db2
commit d82e057e6b
1 changed files with 12 additions and 1 deletions
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13
polytopes.js
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@ -164,7 +164,9 @@ export const cell24 = () => {
} }
// notes on coherent indexing
// see table in https://en.wikipedia.org/wiki/120-cell - maybe adapt the
// unit radius table
function make_120cell_vertices() { function make_120cell_vertices() {
const phi = 0.5 * (1 + Math.sqrt(5)); const phi = 0.5 * (1 + Math.sqrt(5));
@ -184,10 +186,19 @@ function make_120cell_vertices() {
PERMUTE.coordinates([2, 1, phi, phiinv], 0, true), PERMUTE.coordinates([2, 1, phi, phiinv], 0, true),
].flat(); ].flat();
index_nodes(nodes); index_nodes(nodes);
label_nodes(nodes, [1], 1);
label_nodes(nodes, [25, 41, 97, 109, 157, 161, 173, 177, 113, 37, 53, 93 ], 2);
label_nodes(nodes, [29, 45, 101, 105, 153, 165, 169, 181, 117, 33, 49, 89], 4);
scale_nodes(nodes, 0.5); scale_nodes(nodes, 0.5);
return nodes; return nodes;
} }
function label_nodes(nodes, ids, label) {
nodes.filter((n) => ids.includes(n.id)).map((n) => n.label = label);
}
export const cell120 = () => { export const cell120 = () => {
const nodes = make_120cell_vertices(); const nodes = make_120cell_vertices();