165 lines
No EOL
5.4 KiB
HTML
165 lines
No EOL
5.4 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>Static Surface</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: 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: fixed;
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bottom: 20px;
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color: #555;
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font-size: 10px;
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text-align: center;
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width: 100%;
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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 from prompt
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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: 1.25, min: 1.0, max: 1.55 },
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tone: { anger: 0.0, sadness: 0.0, curiosity: 0.1, dryness: 0.9, playfulness: 0.0, tension: 0.0 }
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};
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// Reaction-diffusion simulation
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const size = 100;
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const grid = Array(size).fill().map(() =>
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Array(size).fill().map(() =>
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[Math.random() * 0.1, Math.random() * 0.1]
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)
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);
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const next = Array(size).fill().map(() =>
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Array(size).fill().map(() => [0, 0])
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);
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const feed = 0.055;
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const kill = 0.062;
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const diffA = 1.0;
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const diffB = 0.5;
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const dt = 1.0;
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function update() {
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for (let x = 1; x < size - 1; x++) {
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for (let y = 1; y < size - 1; y++) {
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const a = grid[x][y][0];
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const b = grid[x][y][1];
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const laplacianA = (grid[x-1][y][0] + grid[x+1][y][0] +
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grid[x][y-1][0] + grid[x][y+1][0] -
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4 * a) * diffA;
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const laplacianB = (grid[x-1][y][1] + grid[x+1][y][1] +
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grid[x][y-1][1] + grid[x][y+1][1] -
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4 * b) * diffB;
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const reaction = a * b * b;
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next[x][y][0] = a + (dt * (laplacianA - reaction));
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next[x][y][1] = b + (dt * (laplacianB + reaction));
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// Clamping
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next[x][y][0] = Math.max(0, Math.min(next[x][y][0], 1));
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next[x][y][1] = Math.max(0, Math.min(next[x][y][1], 1));
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}
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}
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// Swap grids
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[grid, next].forEach((arr, i) => {
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for (let x = 0; x < size; x++) {
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for (let y = 0; y < size; y++) {
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arr[x][y][0] = next[x][y][0];
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arr[x][y][1] = next[x][y][1];
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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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const scale = Math.min(canvas.width, canvas.height) / size;
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const offsetX = (canvas.width - size * scale) / 2;
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const offsetY = (canvas.height - size * scale) / 2;
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ctx.fillStyle = '#000000';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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for (let x = 0; x < size; x++) {
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for (let y = 0; y < size; y++) {
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const a = grid[x][y][0];
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const b = grid[x][y][1];
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if (b > 0.06) { // Only draw when B is sufficiently active
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const intensity = Math.min(1, b * 2);
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ctx.fillStyle = `rgba(255, 255, 255, ${intensity * 0.8})`;
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ctx.beginPath();
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ctx.arc(
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offsetX + x * scale + scale/2,
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offsetY + y * scale + scale/2,
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scale * 0.3 * (0.5 + intensity * 0.5),
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0, Math.PI * 2
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);
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ctx.fill();
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}
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}
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}
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// Add some structure to the noise
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ctx.lineWidth = scale * 0.1;
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ctx.strokeStyle = `rgba(200, 200, 200, 0.3)`;
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for (let i = 0; i < 50; i++) {
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const x1 = Math.floor(Math.random() * size);
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const y1 = Math.floor(Math.random() * size);
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const x2 = Math.floor(Math.random() * size);
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const y2 = Math.floor(Math.random() * size);
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ctx.beginPath();
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ctx.moveTo(offsetX + x1 * scale + scale/2, offsetY + y1 * scale + scale/2);
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ctx.lineTo(offsetX + x2 * scale + scale/2, offsetY + y2 * scale + scale/2);
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ctx.stroke();
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}
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}
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function animate() {
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update();
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draw();
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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> |