birth: Flowing Fractured Particles
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index.html
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184
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>Neurameba · Motd.Social</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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color: #f0f0f0;
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font-family: 'Courier New', monospace;
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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: 0.5;
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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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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 influenced by the generative art builder
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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: 1.07, min: 1.0, max: 1.1 },
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tone: { anger: 0.0, sadness: 0.0, curiosity: 0.1, dryness: 0.8, playfulness: 0.0, tension: 0.0 }
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};
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// Simulation variables
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const particles = [];
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const flowField = {
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gridSize: Math.floor(30 + params.complexity * 30),
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spacing: 30,
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strength: params.motion * 0.02,
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angleVariation: (params.connectedness * Math.PI / 2) + (params.complexity * Math.PI)
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};
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// Initialize particles based on density
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function initParticles() {
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const count = Math.floor(400 + params.density * 600);
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for (let i = 0; i < count; i++) {
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particles.push({
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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size: 1 + params.density * 2,
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speed: 0.2 + params.motion * 0.8,
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trail: [],
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maxTrailLength: 20 + Math.floor(params.lifespan * 20),
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hue: params.tone.dryness > 0.7 ? 0 : (30 + Math.random() * 30),
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saturation: params.tone.dryness > 0.7 ? 0 : (50 + Math.random() * 40),
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lifetime: params.lifespan * 1000
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});
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}
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}
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function createFlowField() {
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const { gridSize, spacing, angleVariation } = flowField;
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for (let y = 0; y < gridSize; y++) {
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for (let x = 0; x < gridSize; x++) {
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const angle = (Math.random() * angleVariation) +
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(x / gridSize) * Math.PI * 2 * params.connectedness +
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(y / gridSize) * Math.PI * params.motion;
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const length = spacing * (0.5 + params.motion * 0.5);
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flowField[`${x},${y}`] = {
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x: Math.cos(angle) * length,
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y: Math.sin(angle) * length
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};
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}
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}
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}
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function updateParticles() {
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particles.forEach((p, i) => {
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// Get flow field vector
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const gridX = Math.floor(p.x / flowField.spacing) % flowField.gridSize;
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const gridY = Math.floor(p.y / flowField.spacing) % flowField.gridSize;
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const vector = flowField[`${gridX},${gridY}`] ||
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{ x: (Math.random() - 0.5) * 2, y: (Math.random() - 0.5) * 2 };
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// Apply motion
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p.x += vector.x * p.speed * params.pulse.avg;
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p.y += vector.y * p.speed * params.pulse.avg;
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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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// Update trail
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p.trail.push({ x: p.x, y: p.y });
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if (p.trail.length > p.maxTrailLength) {
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p.trail.shift();
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}
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// Age particles
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p.lifetime--;
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if (p.lifetime <= 0) {
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particles.splice(i, 1);
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particles.push({
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...p,
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x: Math.random() * canvas.width,
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y: Math.random() * canvas.height,
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lifetime: params.lifespan * 1000 + Math.random() * 500
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});
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}
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});
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}
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function draw() {
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// Fade background slightly
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ctx.fillStyle = 'rgba(5, 5, 10, 0.05)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Draw particles with trails
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particles.forEach(p => {
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const gradient = ctx.createLinearGradient(
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p.x - 5, p.y - 5,
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p.x + 5, p.y + 5
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);
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gradient.addColorStop(0, `hsla(${p.hue}, ${p.saturation}%, 70%, 0.2)`);
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gradient.addColorStop(1, `hsla(${p.hue}, ${p.saturation}%, 70%, 0)`);
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ctx.strokeStyle = gradient;
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ctx.lineWidth = p.size;
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if (p.trail.length > 1) {
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ctx.beginPath();
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ctx.moveTo(p.trail[0].x, p.trail[0].y);
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for (let i = 1; i < p.trail.length; i++) {
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ctx.lineTo(p.trail[i].x, p.trail[i].y);
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}
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ctx.stroke();
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}
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});
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// Add some central glow based on motion
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if (params.motion > 0.7) {
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ctx.fillStyle = `hsla(210, 30%, 80%, ${(params.motion - 0.7) * 0.3})`;
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ctx.beginPath();
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ctx.arc(canvas.width/2, canvas.height/2, 20 + params.motion * 30, 0, Math.PI * 2);
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ctx.fill();
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}
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}
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function animate() {
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updateParticles();
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draw();
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requestAnimationFrame(animate);
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}
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// Initialize and start
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initParticles();
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createFlowField();
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animate();
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</script>
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</body>
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</html>
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