321 lines
No EOL
11 KiB
HTML
321 lines
No EOL
11 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 {
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margin: 0;
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overflow: hidden;
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background-color: #0a0a0a;
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
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}
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canvas {
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display: block;
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position: absolute;
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top: 0;
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left: 0;
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width: 100vw;
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height: 100vh;
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}
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#info {
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position: absolute;
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bottom: 20px;
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right: 20px;
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color: #666;
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font-size: 11px;
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text-align: right;
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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="info">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 derived from organism specs
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const params = {
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motion: 0.523,
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density: 0.530,
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complexity: 0.445,
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connectedness: 0.487,
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lifespan: 0.498,
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pulse: {
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avg: 0.70,
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min: 0.30,
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max: 1.85
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},
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tone: {
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curiosity: 0.70,
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dryness: 0.90,
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playfulness: 0.10
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},
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topology: {
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nodes: 84,
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branchCount: 66,
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loops: 187,
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maxDepth: 18,
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thicknessRatio: 1.50,
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fractalDimension: 1.661
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}
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};
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// Flow field implementation
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const particles = [];
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const flowField = [];
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const flowResolution = 30 * (1 + params.complexity * 2);
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const particleCount = 100 * params.density;
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// Initialize flow field with Perlin noise variations
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function initFlowField() {
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for (let y = 0; y < canvas.height; y += flowResolution) {
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for (let x = 0; x < canvas.width; x += flowResolution) {
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const index = (y / flowResolution) * (canvas.width / flowResolution) + (x / flowResolution);
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flowField[index] = {
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x: x,
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y: y,
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vx: 0,
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vy: 0,
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strength: 0,
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pulse: params.pulse.avg
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};
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}
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}
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// Add noise-based flow patterns
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for (let i = 0; i < flowField.length; i++) {
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const x = flowField[i].x / canvas.width;
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const y = flowField[i].y / canvas.height;
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const angle = noise(x * 3, y * 3) * Math.PI * 2;
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const strength = noise(x * 1.5 + 100, y * 1.5 + 100) * 0.5 + 0.5;
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flowField[i].vx = Math.cos(angle) * strength * 2;
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flowField[i].vy = Math.sin(angle) * strength * 2;
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flowField[i].strength = strength;
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}
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}
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// Perlin noise implementation (simplified)
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const p = new Array(512);
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const permutation = [151,160,137,91,90,15,
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131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,
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190, 6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,
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88,237,149,56,87,174,20,125,136,171,168, 68,175,74,165,71,134,139,48,27,166,
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77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,
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102,143,54, 65,25,63,161, 1,216,80,73,209,76,132,187,208, 89,18,169,200,196,
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135,130,116,188,159,86,164,100,109,198,173,186, 3,64,52,217,226,250,124,123,
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5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,
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223,183,170,213,119,248,152, 2,44,154,163, 70,221,153,101,155,167, 43,172,9,
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129,22,39,253, 19,98,108,110,79,113,224,232,178,185, 112,104,218,246,97,228,
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251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,107,
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49,192,214, 31,181,199,106,157,184, 84,204,176,115,121,50,45,127, 4,150,254,
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138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180];
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for (let i=0; i < 256 ; i++) {
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p[i] = p[i + 256] = permutation[i];
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}
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function noise(x, y, z) {
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const X = Math.floor(x) & 255;
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const Y = Math.floor(y) & 255;
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const Z = Math.floor(z) & 255;
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x -= Math.floor(x);
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y -= Math.floor(y);
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z -= Math.floor(z);
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const u = fade(x);
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const v = fade(y);
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const w = fade(z);
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const A = p[X ]+Y;
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const AA = p[A]+Z;
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const AB = p[A+1]+Z;
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const B = p[X+1]+Y;
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const BA = p[B]+Z;
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const BB = p[B+1]+Z;
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return lerp(w, lerp(v, lerp(u, grad(p[AA ], x , y , z ),
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grad(p[BA ], x-1, y , z )),
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lerp(u, grad(p[AB ], x , y-1, z ),
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grad(p[BB ], x-1, y-1, z ))),
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lerp(v, lerp(u, grad(p[AA+1], x , y , z-1 ),
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grad(p[BA+1], x-1, y , z-1 )),
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lerp(u, grad(p[AB+1], x , y-1, z-1 ),
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grad(p[BB+1], x-1, y-1, z-1 ))));
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}
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function fade(t) {
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return t * t * t * (t * (t * 6 - 15) + 10);
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}
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function lerp(t, a, b) {
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return a + t * (b - a);
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}
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function grad(hash, x, y, z) {
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const h = hash & 15;
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const u = h < 8 ? x : y;
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const v = h < 4 ? y : h === 12 || h === 14 ? x : z;
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return ((h & 1) === 0 ? u : -u) + ((h & 2) === 0 ? v : -v);
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}
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// Particle class
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class Particle {
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constructor() {
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this.reset();
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this.prevX = this.x;
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this.prevY = this.y;
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this.history = [];
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this.size = 1 + Math.random() * 2 * params.density;
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this.maxHistory = 20 + Math.random() * 40;
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this.color = `hsl(180, ${70 + Math.random() * 30}%, ${80 + Math.random() * 10}%)`;
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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.speed = 0.5 + Math.random() * params.motion * 2;
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this.vx = 0;
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this.vy = 0;
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this.lifespan = params.lifespan * (0.5 + Math.random() * 0.5);
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this.age = 0;
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this.opacity = params.tone.dryness > 0.8 ? 0.8 : Math.random() * 0.5 + 0.3;
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}
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update() {
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this.prevX = this.x;
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this.prevY = this.y;
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// Find nearest flow field point
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const gridX = Math.floor(this.x / flowResolution);
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const gridY = Math.floor(this.y / flowResolution);
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const index = gridY * (canvas.width / flowResolution) + gridX;
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const field = flowField[index];
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// Update velocity with field influence
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this.vx = field.vx * this.speed * field.pulse;
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this.vy = field.vy * this.speed * field.pulse;
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// Add small randomness
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this.vx += (Math.random() - 0.5) * 0.3;
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this.vy += (Math.random() - 0.5) * 0.3;
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// Update position
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this.x += this.vx;
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this.y += this.vy;
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// Boundary checks
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if (this.x < 0) {
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this.x = canvas.width;
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this.prevX = this.x;
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} else if (this.x > canvas.width) {
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this.x = 0;
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this.prevX = this.x;
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}
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if (this.y < 0) {
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this.y = canvas.height;
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this.prevY = this.y;
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} else if (this.y > canvas.height) {
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this.y = 0;
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this.prevY = this.y;
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}
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// Update history
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this.history.push({x: this.x, y: this.y});
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if (this.history.length > this.maxHistory) {
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this.history.shift();
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}
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// Update age and pulse
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this.age++;
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field.pulse = params.pulse.avg + (params.pulse.max - params.pulse.min) *
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(0.5 + 0.5 * Math.sin(Date.now() * 0.001 * params.pulse.avg));
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// Fade out near edges
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const edgeDist = Math.min(
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this.x / 100,
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(canvas.width - this.x) / 100,
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this.y / 100,
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(canvas.height - this.y) / 100
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);
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this.opacity = edgeDist * 0.8;
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}
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draw() {
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ctx.strokeStyle = this.color;
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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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// Draw history with decreasing opacity
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for (let i = 0; i < this.history.length; i++) {
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const point = this.history[i];
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const opacity = this.opacity * (i / this.history.length);
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ctx.globalAlpha = opacity;
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ctx.lineTo(point.x, point.y);
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ctx.stroke();
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}
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ctx.globalAlpha = 1;
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}
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}
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// Initialize particles
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function initParticles() {
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particles.length = 0;
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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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}
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// Animation loop
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function animate() {
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// Dark background with subtle noise texture
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ctx.fillStyle = `rgba(0, 0, 0, ${0.95 - params.motion * 0.1})`;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Draw subtle noise pattern
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if (params.tone.dryness > 0.8) {
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drawNoiseTexture();
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}
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// Update and draw particles
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particles.forEach(particle => {
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particle.update();
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particle.draw();
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});
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requestAnimationFrame(animate);
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}
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function drawNoiseTexture() {
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ctx.fillStyle = 'rgba(5, 5, 10, 0.1)';
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for (let i = 0; i < canvas.width * canvas.height * 0.0002; i++) {
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const x = Math.random() * canvas.width;
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const y = Math.random() * canvas.height;
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const size = Math.random() * 0.5;
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const opacity = Math.random() * 0.05;
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ctx.fillRect(x, y, size, size);
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}
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}
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// Start animation
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initFlowField();
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initParticles();
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animate();
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</script>
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</body>
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</html> |