// https://www.sololearn.com/post/54771 function main(){ inputs = { points: 100, lines: 10000, status: { ready: true, pts: { ready: false }, lns: { ready: false } } } settings = { board: { cv: document.getElementById("board"), ctx: document.getElementById("board").getContext("2d") }, point: { radius: 10, color: "yellow", mindist: 100, addingAttemptLimit: 1000 }, line: { width: 5, color: "red", addingAttemptLimit: Math.min(1000, inputs.points*(inputs.points+1)) } }; Point = { records: [], isSame: function(p1, p2){ return p1.x===p2.x && p1.y===p2.y; }, between: function(pt, pr){ if((pt.x-pr.p1.x)*(pt.x-pr.p2.x)<0 && (pt.y-pr.p1.y)*(pt.y-pr.p2.y)<0){ return (pt.x-pr.p1.x)*(pt.y-pr.p2.y) === (pt.y-pr.p1.y)*(pt.x-pr.p2.x); }else return false; }, indexOf: function(pt){ for(var p=0; p=prl) dl = 0; else if(dl<0) dl += prl; if(ul===undefined || typeof(ul)!=="number" || ul0 && ul=prl) ul = prl-1; else if(ul<0) ul += prl; return Point.records[Math.floor(Math.random()*(ul-dl) + dl)]; }, pair: function(){ var prl = Point.records.length; var pi1 = Math.floor(Math.random()*(prl-1)); var pi2 = Math.floor(Math.random()*(prl-pi1) + pi1); return {p1: Point.records[pi1], p2: Point.records[pi2]}; } } }; Vector = { fromPts: function(p1, p2){ return {x: p2.x-p1.x, y: p2.y-p1.y}; }, fromPair: function(pr){ return Vector.fromPts(pr.p1, pr.p2); }, isParallel: function(v1, v2){ return v1.x*v2.y === v2.x*v1.y; } }; Line = { records: [], hasPair: function(pair){ for(var p=0; p0){ console.log(""); failed = 0; } }else{ failed++; console.log("Drawing new line failed: " + failed); } } }, 100); }

Make Triangles