222 lines
No EOL
7 KiB
HTML
222 lines
No EOL
7 KiB
HTML
<!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 Fracture</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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}
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#attribution {
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position: absolute;
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bottom: 10px;
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right: 10px;
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color: #555;
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font-size: 10px;
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pointer-events: none;
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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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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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// Parameters (abstracted from original input)
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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: 1.06,
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dryness: 0.9,
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tension: 0.0
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};
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// Main animation state
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const state = {
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points: [],
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cells: [],
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time: 0,
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maxPoints: Math.floor(100 + params.density * 300),
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maxIterations: 100 + params.complexity * 200,
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thickness: 1.5 + params.connectedness * 1.5
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};
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// Initialize points
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function initPoints() {
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state.points = [];
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for (let i = 0; i < state.maxPoints; i++) {
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state.points.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) * 2 * params.motion * params.pulse,
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vy: (Math.random() - 0.5) * 2 * params.motion * params.pulse,
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life: Math.random() * 100 + 100 * params.lifespan,
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hue: params.dryness > 0.7 ? Math.random() * 30 : Math.random() * 360
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});
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}
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}
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// Update points
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function updatePoints() {
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state.points.forEach(p => {
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p.x += p.vx;
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p.y += p.vy;
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p.life--;
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// Wrap around edges
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if (p.x < 0) p.x = canvas.width;
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if (p.x > canvas.width) p.x = 0;
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if (p.y < 0) p.y = canvas.height;
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if (p.y > canvas.height) p.y = 0;
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// Fade out near death
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if (p.life < 30) {
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p.opacity = p.life / 30;
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}
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});
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// Remove dead points
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state.points = state.points.filter(p => p.life > 0);
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// Add new points if needed
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while (state.points.length < state.maxPoints * 0.8) {
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state.points.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) * 2 * params.motion * params.pulse,
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vy: (Math.random() - 0.5) * 2 * params.motion * params.pulse,
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life: Math.random() * 100 + 100 * params.lifespan,
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hue: params.dryness > 0.7 ? Math.random() * 30 : Math.random() * 360
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});
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}
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}
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// Calculate voronoi cells
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function calculateVoronoi() {
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state.cells = [];
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// Clone points for safety
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const points = [...state.points];
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// Sort by x coordinate for better performance
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points.sort((a, b) => a.x - b.x);
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// For each point, find its voronoi cell
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for (let i = 0; i < points.length; i++) {
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const p1 = points[i];
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const cell = {
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points: [p1],
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edges: [],
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color: `hsl(${p1.hue}, 80%, ${50 + Math.sin(state.time * 0.01) * 10}%)`
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};
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// Find neighboring points within influence range
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const influenceRange = 100 + params.connectedness * 100;
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for (let j = 0; j < points.length; j++) {
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if (i === j) continue;
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const p2 = points[j];
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const dx = p2.x - p1.x;
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const dy = p2.y - p1.y;
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const dist = Math.sqrt(dx * dx + dy * dy);
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if (dist < influenceRange) {
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cell.points.push(p2);
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// Create edge between points
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cell.edges.push({
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start: p1,
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end: p2,
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length: dist
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});
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}
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}
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state.cells.push(cell);
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}
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}
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// Draw voronoi cells
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function drawVoronoi() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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// Draw cells
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state.cells.forEach(cell => {
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// Draw cell outline
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ctx.beginPath();
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ctx.moveTo(cell.points[0].x, cell.points[0].y);
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for (let i = 1; i < Math.min(cell.points.length, 5); i++) {
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const p = cell.points[i];
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ctx.lineTo(p.x, p.y);
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}
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ctx.closePath();
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ctx.strokeStyle = cell.color;
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ctx.lineWidth = state.thickness * 0.5;
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ctx.stroke();
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// Draw edges
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ctx.beginPath();
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cell.edges.forEach(edge => {
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ctx.moveTo(edge.start.x, edge.start.y);
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ctx.lineTo(edge.end.x, edge.end.y);
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});
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ctx.strokeStyle = cell.color;
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ctx.lineWidth = params.connectedness > 0.5 ? state.thickness * 0.3 : state.thickness * 0.1;
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ctx.stroke();
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// Draw points
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cell.points.forEach(p => {
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ctx.beginPath();
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ctx.arc(p.x, p.y, 1 + params.connectedness, 0, Math.PI * 2);
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ctx.fillStyle = cell.color;
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ctx.fill();
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});
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});
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// Add some noise to the background
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if (params.dryness > 0.7) {
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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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}
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}
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// Animation loop
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function animate() {
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updatePoints();
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calculateVoronoi();
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drawVoronoi();
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state.time++;
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requestAnimationFrame(animate);
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}
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// Start animation
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initPoints();
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animate();
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</script>
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</body>
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</html> |