withPortalsfunction

A filling with portals put in: each portal is made by joining two lines into one that goes into a ring and out of another, and the two cells it takes are the portal. Where line A runs … a, P1, … and line B runs … P2, b … with b on from P2 the way P1 is on from a, a new line runs A up to P1, the portal, and B on from b; what is left of A after P1 and of B before P2 are lines of their own, or nothing. Null where count portals cannot be made.

import { withPortals } from "@johnmorrisdotca/tsunagi";

function withPortals(size: number, paths: readonly number[][], random: Random, count: number, wrap: boolean): { paths: number[][]; pairs: [number, number][]; } | null

import { TSUNAGI_4 } from "@johnmorrisdotca/tsunagi/levels-4";
import { decodeLayout, linesOfAnswer, seededRandom, withPortals } from "@johnmorrisdotca/tsunagi";

const givens = TSUNAGI_4[0][0];
const answer = TSUNAGI_4[0][1];
const layout = decodeLayout(givens,4)!;
const solvedLines = linesOfAnswer(layout,answer)!;
console.log(withPortals(4,solvedLines.map(line=>[...line]),seededRandom(42),1,false));