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@@ -0,0 +1,74 @@
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+
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+console.log('hi voronoi');
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+
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+const canvas = document.getElementById('canvas'),
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+ canvwidth = canvas.width,
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+ canvheight = canvas.height,
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+ ctx = canvas.getContext('2d');
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+const minDist = 20,
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+ edgeBounds = 20;
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+
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+function drawSite(x, y) {
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+ ctx.save();
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+ ctx.beginPath();
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+ ctx.arc(x, y, 2, 0, Math.PI * 2, false);
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+ ctx.closePath();
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+ ctx.fillStyle = 'black';
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+ ctx.fill();
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+ ctx.restore();
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+}
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+function drawLine(x1, y1, x2, y2) {
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+ ctx.save();
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+ ctx.beginPath();
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+ ctx.strokeStyle = 'black';
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+ ctx.lineWidth = 1;
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+ ctx.moveTo(x1, y1);
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+ ctx.lineTo(x2, y2);
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+ ctx.stroke();
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+ ctx.restore();
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+}
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+function drawLineO(p1, p2) {
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+ drawLine(p1.x, p1.y, p2.x, p2.y);
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+}
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+function distance(p1, p2) {
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+ return Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2));
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+}
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+function generateSites(n = 10) {
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+ const sites = [],
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+ safety = n * 2,
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+ randMultWidth = canvwidth - (edgeBounds * 2),
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+ randMultHeight = canvheight - (edgeBounds * 2),
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+ origin = {x:0, y:0};
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+
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+ let count = 0;
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+ while( sites.length < n && count < safety ) {
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+ count += 1;
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+ const x = Math.floor(Math.random() * randMultWidth) + edgeBounds,
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+ y = Math.floor(Math.random() * randMultHeight) + edgeBounds,
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+ min = sites.reduce(function checkDist(minSoFar, existing) {
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+ const d = distance(existing, {x, y});
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+ if( d < minSoFar ) {
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+ return d;
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+ }
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+ else {
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+ return minSoFar;
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+ }
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+ }, canvwidth * canvheight);
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+ if( min > minDist ) {
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+ sites.push( {x, y} );
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+ }
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+ }
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+
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+ sites.sort(function (a, b) {
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+ return distance(origin, a) - distance(origin, b);
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+ });
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+
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+ return sites;
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+}
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+
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+const sites = generateSites(15);
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+
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+sites.forEach(function renderSites(site) {
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+ drawSite(site.x, site.y);
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+});
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+
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Brandon Wong
9 years ago