191 lines
No EOL
6.3 KiB
HTML
191 lines
No EOL
6.3 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>Organic Fractal Nebula</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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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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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: 20px;
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left: 20px;
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color: rgba(255, 255, 255, 0.3);
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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
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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: 1.1, min: 1.0, max: 1.3 },
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tone: { dryness: 0.8, playfulness: 0.1 }
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};
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// Fractal settings
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const maxDepth = 4;
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const lengthScale = 10;
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const angleStep = Math.PI / 4;
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const decayRate = 0.7;
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const branchCount = 3;
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const thickness = params.tone.dryness > 0.7 ? 1 : 2;
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// State
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const branches = [];
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const particles = [];
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const colors = ['rgba(255,255,255,0.3)', 'rgba(200,200,200,0.2)'];
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// Initialize
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function init() {
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branches.length = 0;
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particles.length = 0;
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// Initial branches
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for (let i = 0; i < 5 * params.density; i++) {
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branches.push({
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x: canvas.width / 2,
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y: canvas.height / 2,
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length: lengthScale,
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angle: Math.random() * Math.PI * 2,
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depth: 0,
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parent: null,
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color: colors[Math.floor(Math.random() * colors.length)],
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thickness: thickness * (1 - params.complexity * 0.3)
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});
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}
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}
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// Recursive fractal growth
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function growBranch(branch) {
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if (branch.depth >= maxDepth) return;
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const angleVariation = angleStep * (1 - params.connectedness);
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const newBranches = [];
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for (let i = 0; i < branchCount; i++) {
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const newAngle = branch.angle + (Math.random() - 0.5) * angleVariation;
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const newLength = branch.length * (0.7 + Math.random() * 0.3);
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const newThickness = branch.thickness * decayRate;
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if (newThickness < 0.3) continue;
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const newX = branch.x + Math.cos(newAngle) * branch.length;
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const newY = branch.y + Math.sin(newAngle) * branch.length;
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const newBranch = {
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x: newX,
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y: newY,
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length: newLength,
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angle: newAngle,
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depth: branch.depth + 1,
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parent: branch,
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color: colors[Math.floor(Math.random() * colors.length)],
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thickness: newThickness
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};
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branches.push(newBranch);
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newBranches.push(newBranch);
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// Add particles along branch
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const particleCount = 2 * params.density * (1 - branch.depth/maxDepth);
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for (let p = 0; p < particleCount; p++) {
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particles.push({
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x: branch.x + (newX - branch.x) * (p / particleCount),
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y: branch.y + (newY - branch.y) * (p / particleCount),
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age: 0,
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maxAge: 30 + Math.random() * 30,
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size: newThickness * 2,
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color: colors[0]
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});
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}
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}
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// Continue growing from new branches
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newBranches.forEach(growBranch);
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}
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// Animation loop
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function animate() {
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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// Update and draw branches
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branches.forEach(branch => {
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ctx.beginPath();
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ctx.moveTo(branch.x, branch.y);
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ctx.lineTo(
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branch.x + Math.cos(branch.angle) * branch.length,
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branch.y + Math.sin(branch.angle) * branch.length
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);
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ctx.strokeStyle = branch.color;
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ctx.lineWidth = branch.thickness;
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ctx.stroke();
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});
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// Update and draw particles
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particles.forEach((particle, i) => {
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particle.age++;
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if (particle.age > particle.maxAge) {
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particles.splice(i, 1);
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return;
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}
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// Slight movement based on motion parameter
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const pulse = params.pulse.avg * (1 + 0.1 * Math.sin(Date.now() * 0.001));
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particle.x += (Math.random() - 0.5) * 2 * params.motion;
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particle.y += (Math.random() - 0.5) * 2 * params.motion;
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ctx.beginPath();
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ctx.arc(particle.x, particle.y, particle.size, 0, Math.PI * 2);
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ctx.fillStyle = particle.color;
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ctx.fill();
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});
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// Occasionally grow new branches
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if (Math.random() < 0.05 * params.complexity) {
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const tipBranches = branches.filter(b => b.depth === maxDepth);
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if (tipBranches.length > 0) {
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growBranch(tipBranches[Math.floor(Math.random() * tipBranches.length)]);
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}
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}
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requestAnimationFrame(animate);
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}
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init();
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animate();
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</script>
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</body>
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</html> |