birth: Dry Voronoi Emergence
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index.html
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232
index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Voronoi Organism</title>
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<style>
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body {
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margin: 0;
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overflow: hidden;
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background: #0a0a0a;
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font-family: 'Courier New', monospace;
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color: #ccc;
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display: flex;
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flex-direction: column;
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height: 100vh;
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}
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canvas {
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flex: 1;
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}
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.attribution {
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text-align: center;
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padding: 10px;
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font-size: 12px;
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opacity: 0.6;
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background: rgba(0,0,0,0.3);
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}
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</style>
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</head>
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<body>
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<canvas id="canvas"></canvas>
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<div class="attribution">neurameba · motd.social</div>
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<script>
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(function() {
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const canvas = document.getElementById('canvas');
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const ctx = canvas.getContext('2d');
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// Set canvas to full window size
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function resizeCanvas() {
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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}
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resizeCanvas();
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window.addEventListener('resize', resizeCanvas);
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// Parameters from prompt
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const params = {
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motion: 0.5,
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density: 0.5,
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complexity: 0.5,
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connectedness: 0.5,
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lifespan: 0.5,
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pulse: { avg: 1.08, min: 1.05, max: 1.10 },
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tone: { anger: 0.00, sadness: 0.00, curiosity: 0.20, dryness: 0.80, playfulness: 0.00, tension: 0.00 }
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};
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// Generate seed points for voronoi
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function generateSeeds() {
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const seeds = [];
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const count = Math.floor(200 + 800 * params.density);
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for (let i = 0; i < count; i++) {
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seeds.push({
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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vx: (Math.random() - 0.5) * 0.5 * params.motion,
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vy: (Math.random() - 0.5) * 0.5 * params.motion,
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life: Math.random() * 200 + 100,
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maxLife: Math.random() * 200 + 100
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});
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}
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return seeds;
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}
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// Update seeds
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function updateSeeds(seeds) {
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seeds.forEach(seed => {
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seed.x += seed.vx;
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seed.y += seed.vy;
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// Wrap around edges
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if (seed.x < 0) seed.x = canvas.width;
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if (seed.x > canvas.width) seed.x = 0;
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if (seed.y < 0) seed.y = canvas.height;
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if (seed.y > canvas.height) seed.y = 0;
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seed.life -= 0.5;
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});
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// Remove dead seeds and add new ones
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const newSeeds = [];
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seeds.forEach(seed => {
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if (seed.life > 0) newSeeds.push(seed);
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});
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while (newSeeds.length < Math.floor(200 + 800 * params.density)) {
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newSeeds.push({
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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vx: (Math.random() - 0.5) * 0.5 * params.motion,
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vy: (Math.random() - 0.5) * 0.5 * params.motion,
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life: Math.random() * 200 + 100,
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maxLife: Math.random() * 200 + 100
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});
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}
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return newSeeds;
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}
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// Draw voronoi cells
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function drawVoronoi(seeds) {
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// Clear with semi-transparent to create trails
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ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Create voronoi diagram
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const diagram = new Voronoi();
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const bbox = { xl: 0, xr: canvas.width, yt: 0, yb: canvas.height };
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const sites = seeds.map(s => ({ x: s.x, y: s.y }));
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const cells = diagram.compute(sites, bbox);
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// Draw cells with varying styles
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cells.forEach(cell => {
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if (!cell || !cell.halfedges) return;
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const points = [];
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cell.halfedges.forEach(he => {
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points.push(he.getStartpoint());
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});
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if (points.length > 0) {
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// Calculate color based on seed properties
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const seed = seeds[cell.site.voronoiId];
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const lifeRatio = seed.life / seed.maxLife;
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const hue = 120 + 60 * lifeRatio; // Green to yellow
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const saturation = 30 + 70 * (1 - lifeRatio);
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const lightness = 20 + 30 * lifeRatio;
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// Apply dryness to reduce saturation
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ctx.fillStyle = `hsl(${hue}, ${saturation * (1 - params.tone.dryness)}%, ${lightness}%)`;
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ctx.beginPath();
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ctx.moveTo(points[0].x, points[0].y);
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for (let i = 1; i < points.length; i++) {
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ctx.lineTo(points[i].x, points[i].y);
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}
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ctx.closePath();
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ctx.fill();
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// Draw border
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ctx.strokeStyle = `hsla(${hue}, 80%, 20%, 0.3)`;
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ctx.lineWidth = 0.5;
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ctx.stroke();
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}
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});
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}
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// Animation loop
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function animate() {
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const seeds = updateSeeds(window.seeds || generateSeeds());
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window.seeds = seeds;
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drawVoronoi(seeds);
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requestAnimationFrame(animate);
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}
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// Initialize
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window.seeds = generateSeeds();
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animate();
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})();
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// Simple Voronoi implementation
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function Voronoi() {
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this.edges = [];
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this.cells = [];
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}
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Voronoi.prototype.compute = function(sites, bbox) {
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this.edges = [];
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this.cells = sites.map((site, i) => {
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return {
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site: site,
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halfedges: []
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};
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});
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// Sort sites by x-coordinate
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sites.sort((a, b) => a.x - b.x);
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// Build fortune diagram (simplified)
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// In a real implementation, this would be more complex
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for (let i = 0; i < sites.length; i++) {
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for (let j = i + 1; j < sites.length; j++) {
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const a = sites[i];
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const b = sites[j];
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const dx = b.x - a.x;
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const dy = b.y - a.y;
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const d = Math.sqrt(dx * dx + dy * dy);
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// Create edge if within reasonable distance
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if (d < 200) {
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this.edges.push({
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left: a,
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right: b,
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voronoiId: i
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});
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}
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}
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}
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// Assign edges to cells
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this.edges.forEach(edge => {
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const cell = this.cells[edge.voronoiId];
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if (cell) {
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cell.halfedges.push(new HalfEdge(edge));
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}
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});
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return this.cells;
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};
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function HalfEdge(edge) {
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this.edge = edge;
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this.angle = Math.atan2(edge.right.y - edge.left.y, edge.right.x - edge.left.x);
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}
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HalfEdge.prototype.getStartpoint = function() {
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return this.edge.left;
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};
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</script>
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</body>
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</html>
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