129 lines
No EOL
4.2 KiB
HTML
129 lines
No EOL
4.2 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>Neurameba Flow Field</title>
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<style>
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body { margin: 0; overflow: hidden; background: #0a0a0a; }
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canvas { display: block; }
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#attribution { position: fixed; bottom: 10px; left: 10px; color: #555; font-family: monospace; font-size: 12px; }
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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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// Flow field 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: 0.9, max: 1.2 },
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tone: { anger: 0, sadness: 0, curiosity: 0.1, dryness: 0.8, playfulness: 0, tension: 0 }
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};
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// Particle system
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const particles = [];
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const particleCount = Math.floor(params.density * 1000) + 200;
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const maxSpeed = params.motion * 3;
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class Particle {
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constructor() {
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this.reset();
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this.size = 0.5 + Math.random() * 1.5;
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this.life = 0;
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this.maxLife = 50 + Math.random() * 100;
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this.color = `rgba(200, 200, 200, ${params.tone.dryness > 0.7 ? 0.3 : 0.6})`;
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}
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reset() {
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this.x = Math.random() * canvas.width;
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this.y = Math.random() * canvas.height;
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this.vx = (Math.random() - 0.5) * maxSpeed;
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this.vy = (Math.random() - 0.5) * maxSpeed;
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this.prevX = this.x;
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this.prevY = this.y;
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}
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update() {
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// Simple flow field - noise-based direction
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const nx = this.x / canvas.width * 10;
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const ny = this.y / canvas.height * 10;
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const angle = noise.perlin2(nx, ny) * Math.PI * 2;
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// Apply pulse variation
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const pulse = params.pulse.avg + (params.pulse.max - params.pulse.min) *
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(Math.sin(Date.now() * 0.001) * 0.5 + 0.5);
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this.vx = Math.cos(angle) * maxSpeed * pulse * 0.5;
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this.vy = Math.sin(angle) * maxSpeed * pulse * 0.5;
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// Move particle
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this.prevX = this.x;
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this.prevY = this.y;
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this.x += this.vx;
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this.y += this.vy;
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// Boundary handling
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if (this.x < 0 || this.x > canvas.width || this.y < 0 || this.y > canvas.height) {
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this.reset();
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}
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// Trails
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this.life++;
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if (this.life > this.maxLife) {
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this.reset();
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this.life = 0;
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}
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}
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draw() {
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const alpha = params.tone.dryness > 0.7 ? 0.1 : 0.3;
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ctx.strokeStyle = this.color.replace('a)', `, ${alpha})`);
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ctx.lineWidth = this.size;
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ctx.beginPath();
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ctx.moveTo(this.prevX, this.prevY);
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ctx.lineTo(this.x, this.y);
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ctx.stroke();
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}
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}
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// Perlin noise for flow field
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const noise = new Perlin();
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// Initialize particles
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for (let i = 0; i < particleCount; i++) {
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particles.push(new Particle());
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}
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// Animation loop
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function animate() {
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// Clear with fade effect
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ctx.fillStyle = 'rgba(10, 10, 10, 0.05)';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Update and draw all particles
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particles.forEach(p => {
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p.update();
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p.draw();
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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> |