182 lines
No EOL
6.3 KiB
HTML
182 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>Fractal Tremors</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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}
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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: fixed;
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bottom: 20px;
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color: #555;
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font-family: monospace;
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font-size: 11px;
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text-align: center;
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width: 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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// Parameters derived from abstract values
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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: 1.05,
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tone: { anger: 0, sadness: 0, curiosity: 0.1, dryness: 0.9, playfulness: 0, tension: 0 }
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};
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// Palette based on tone
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const hue = 200 * params.tone.curiosity; // Teal range
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const saturation = params.tone.dryness > 0.8 ? 0 : 100;
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const brightness = 50 + (params.tone.dryness > 0.8 ? 0 : 30);
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// Fractal parameters
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let depth = 4 + Math.floor(params.complexity * 3);
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const angle = Math.PI * 0.4 + params.motion * 0.3;
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const lengthBase = 100;
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const lengthVariance = 0.3;
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const branches = 2 + Math.floor(params.connectedness * 3);
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const branchThickness = 1 + params.density * 3;
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const decay = 0.7 - params.motion * 0.2;
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// Animation state
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let time = 0;
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const particles = [];
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const maxParticles = 500 * params.density;
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// Initialize particles
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for (let i = 0; i < maxParticles; 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: Math.random() * 2 + 1,
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speed: 0.1 + Math.random() * 0.5,
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angle: Math.random() * Math.PI * 2,
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life: Math.random() * 100,
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maxLife: Math.random() * 100 + 50,
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color: `hsl(${hue}, ${saturation}%, ${brightness}%)`,
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thickness: branchThickness * 0.5
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});
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}
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// Fractal branch function
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function drawFractal(x, y, length, angle, depth, parentThickness) {
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if (depth <= 0 || length < 1) return;
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const endX = x + Math.cos(angle) * length;
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const endY = y + Math.sin(angle) * length;
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// Calculate color based on depth and tone
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const currentDepth = maxDepth - depth;
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const colorValue = 10 + (1 - currentDepth / maxDepth) * 30;
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const alpha = params.lifespan * 0.7 + 0.3;
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ctx.strokeStyle = `hsla(${hue}, ${saturation}%, ${colorValue}%, ${alpha})`;
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ctx.lineWidth = parentThickness;
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ctx.beginPath();
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ctx.moveTo(x, y);
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ctx.lineTo(endX, endY);
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ctx.stroke();
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// Recursive branches
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for (let i = 0; i < branches; i++) {
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const branchAngle = angle + (Math.random() - 0.5) * Math.PI * params.motion * 0.5;
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const branchLength = length * (0.6 + (Math.random() * 0.4 - 0.2) * params.motion);
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const branchThickness = parentThickness * decay * (0.8 + Math.random() * 0.4);
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drawFractal(endX, endY, branchLength, branchAngle, depth - 1, branchThickness);
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}
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}
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// Main animation loop
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function animate() {
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// Clear with slight fade for trails
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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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time += 0.01 * params.pulse;
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// Draw fractal structure
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const centerX = canvas.width / 2;
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const centerY = canvas.height / 2;
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const maxDepth = depth;
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// Adjust fractal parameters based on time
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const scale = 0.5 + Math.sin(time * 0.3) * 0.3;
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const currentLength = lengthBase * scale;
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drawFractal(centerX, centerY, currentLength, -Math.PI/2, depth, branchThickness);
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// Update and draw particles
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particles.forEach(particle => {
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// Move particle
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particle.x += Math.cos(particle.angle) * particle.speed;
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particle.y += Math.sin(particle.angle) * particle.speed;
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// Bounce off edges
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if (particle.x < 0 || particle.x > canvas.width) particle.angle = Math.PI - particle.angle;
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if (particle.y < 0 || particle.y > canvas.height) particle.angle = -particle.angle;
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// Fade over life
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particle.life++;
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const fade = Math.min(1, particle.life / particle.maxLife);
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ctx.fillStyle = particle.color.replace(')', `, ${1 - fade * fade})`);
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ctx.beginPath();
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ctx.arc(particle.x, particle.y, particle.size * fade, 0, Math.PI * 2);
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ctx.fill();
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});
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// Occasionally add new particles
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if (Math.random() < 0.1 && particles.length < maxParticles) {
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particles.push({
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x: centerX,
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y: centerY,
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size: Math.random() * 2 + 1,
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speed: 0.1 + Math.random() * 0.5,
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angle: Math.random() * Math.PI * 2,
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life: 0,
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maxLife: Math.random() * 100 + 50,
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color: `hsl(${hue}, ${saturation}%, ${brightness}%)`,
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thickness: branchThickness * 0.5
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});
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}
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requestAnimationFrame(animate);
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}
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animate();
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</script>
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</body>
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</html> |