birth: Voronoi Currents Wavering
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index.html
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229
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 Dreamscape</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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}
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canvas {
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display: block;
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width: 100vw;
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height: 100vh;
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}
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#attribution {
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position: fixed;
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bottom: 10px;
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right: 10px;
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color: rgba(255, 255, 255, 0.3);
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font-size: 10px;
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z-index: 100;
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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 id="attribution">neurameba · motd.social</div>
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<script>
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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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window.addEventListener('resize', resizeCanvas);
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resizeCanvas();
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// Voronoi parameters
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const params = {
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points: Math.floor(150 + 200 * 0.5), // density 0.5
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motion: 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: 1.08,
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tone: {
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anger: 0.00,
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sadness: 0.00,
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curiosity: 0.80,
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dryness: 0.90,
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playfulness: 0.20,
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tension: 0.00
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}
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};
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// Generate voronoi cells
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function generateCells() {
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const cells = [];
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const centerX = canvas.width / 2;
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const centerY = canvas.height / 2;
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// Generate points with motion-affected positions
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for (let i = 0; i < params.points; i++) {
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const angle = Math.random() * Math.PI * 2;
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const distance = Math.random() * Math.min(canvas.width, canvas.height) * 0.4;
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const baseX = centerX + Math.cos(angle) * distance;
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const baseY = centerY + Math.sin(angle) * distance;
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// Add some motion
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const stepX = (Math.random() - 0.5) * 2 * params.motion;
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const stepY = (Math.random() - 0.5) * 2 * params.motion;
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cells.push({
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x: baseX,
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y: baseY,
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vx: stepX,
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vy: stepY,
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lifespan: params.lifespan * 1000 + Math.random() * 500,
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createdAt: Date.now(),
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color: getCellColor()
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});
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}
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return cells;
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}
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// Get cell color based on tone parameters
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function getCellColor() {
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const hue = 180 + Math.random() * 30; // Teals (curiosity)
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const saturation = 30 + params.tone.dryness * 70; // Lower for dryness
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const lightness = 70 - params.tone.sadness * 40; // Brighter for dryness
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const alpha = 0.7 + Math.random() * 0.3;
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return `hsla(${hue}, ${saturation}%, ${lightness}%, ${alpha})`;
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}
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// Calculate voronoi diagram
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function calculateVoronoi(cells) {
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const diagram = [];
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const cellsCopy = [...cells];
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for (let i = 0; i < cellsCopy.length; i++) {
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const cell = cellsCopy[i];
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const neighbors = [];
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for (let j = 0; j < cellsCopy.length; j++) {
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if (i !== j) {
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const dx = cell.x - cellsCopy[j].x;
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const dy = cell.y - cellsCopy[j].y;
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const distance = Math.sqrt(dx * dx + dy * dy);
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neighbors.push({
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index: j,
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distance: distance
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});
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}
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}
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// Sort neighbors by distance to find closest ones
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neighbors.sort((a, b) => a.distance - b.distance);
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// Limit number of connections based on connectedness
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const connectionCount = Math.max(1, Math.floor(params.connectedness * 3));
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diagram.push({
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point: cell,
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neighbors: neighbors.slice(0, connectionCount).map(n => cellsCopy[n.index])
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});
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}
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return diagram;
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}
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// Draw voronoi diagram
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function drawVoronoi(diagram) {
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// Clear with semi-transparent background for trails
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ctx.fillStyle = `rgba(0, 0, 0, ${0.05 + params.tone.dryness * 0.1})`;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Draw edges between connected cells
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ctx.strokeStyle = 'rgba(180, 220, 220, 0.3)';
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ctx.lineWidth = 1 + params.tone.dryness * 0.5;
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for (const cell of diagram) {
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for (const neighbor of cell.neighbors) {
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ctx.beginPath();
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ctx.moveTo(cell.point.x, cell.point.y);
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ctx.lineTo(neighbor.x, neighbor.y);
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ctx.stroke();
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}
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}
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// Draw cell points
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for (const cell of diagram) {
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ctx.beginPath();
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ctx.arc(cell.point.x, cell.point.y, 2 + params.complexity * 2, 0, Math.PI * 2);
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ctx.fillStyle = cell.point.color;
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ctx.fill();
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}
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}
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// Update cell positions
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function updateCells(cells) {
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const now = Date.now();
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for (const cell of cells) {
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// Add some noise to movement
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cell.vx += (Math.random() - 0.5) * 0.05 * params.motion;
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cell.vy += (Math.random() - 0.5) * 0.05 * params.motion;
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// Apply damping
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cell.vx *= 0.95;
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cell.vy *= 0.95;
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cell.x += cell.vx;
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cell.y += cell.vy;
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// Wrap around edges
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if (cell.x < 0) cell.x = canvas.width;
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if (cell.x > canvas.width) cell.x = 0;
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if (cell.y < 0) cell.y = canvas.height;
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if (cell.y > canvas.height) cell.y = 0;
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// Fade color as lifespan decreases
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const age = now - cell.createdAt;
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if (age > cell.lifespan) {
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cell.color = cell.color.replace(/[\d.]+\)$/, `${parseFloat(cell.color.match(/[\d.]+\)/)[0]) - 0.01})`);
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if (parseFloat(cell.color.match(/[\d.]+\)/)[0]) <= 0.3) {
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// Respawn cell occasionally
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if (Math.random() < 0.01) {
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cell.x = Math.random() * canvas.width;
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cell.y = Math.random() * canvas.height;
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cell.vx = (Math.random() - 0.5) * 0.5 * params.motion;
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cell.vy = (Math.random() - 0.5) * 0.5 * params.motion;
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cell.createdAt = now;
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cell.color = getCellColor();
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}
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}
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}
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}
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return cells;
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}
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// Main animation loop
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function animate() {
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// Generate initial cells on first frame
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if (!window.cells) {
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window.cells = generateCells();
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}
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window.cells = updateCells(window.cells);
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const diagram = calculateVoronoi(window.cells);
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drawVoronoi(diagram);
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requestAnimationFrame(animate);
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}
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// Start animation
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animate();
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</script>
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</body>
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</html>
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