birth: Pulsing Monochrome Symbiosis
This commit is contained in:
parent
10a9d9aaa0
commit
26ababaace
1 changed files with 160 additions and 0 deletions
160
index.html
Normal file
160
index.html
Normal file
|
|
@ -0,0 +1,160 @@
|
||||||
|
```html
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<html lang="en">
|
||||||
|
<head>
|
||||||
|
<meta charset="UTF-8">
|
||||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||||
|
<title>Reaction-Diffusion Canvas</title>
|
||||||
|
<style>
|
||||||
|
body {
|
||||||
|
margin: 0;
|
||||||
|
overflow: hidden;
|
||||||
|
background: #0a0a0a;
|
||||||
|
display: flex;
|
||||||
|
justify-content: center;
|
||||||
|
align-items: center;
|
||||||
|
height: 100vh;
|
||||||
|
font-family: 'Courier New', monospace;
|
||||||
|
}
|
||||||
|
canvas {
|
||||||
|
display: block;
|
||||||
|
}
|
||||||
|
#attribution {
|
||||||
|
position: absolute;
|
||||||
|
bottom: 20px;
|
||||||
|
color: #555;
|
||||||
|
font-size: 12px;
|
||||||
|
text-align: center;
|
||||||
|
width: 100%;
|
||||||
|
}
|
||||||
|
</style>
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
<canvas id="canvas"></canvas>
|
||||||
|
<div id="attribution">neurameba · motd.social</div>
|
||||||
|
<script>
|
||||||
|
const canvas = document.getElementById('canvas');
|
||||||
|
const ctx = canvas.getContext('2d');
|
||||||
|
|
||||||
|
// Set canvas to full window size
|
||||||
|
function resizeCanvas() {
|
||||||
|
canvas.width = window.innerWidth;
|
||||||
|
canvas.height = window.innerHeight;
|
||||||
|
}
|
||||||
|
resizeCanvas();
|
||||||
|
window.addEventListener('resize', resizeCanvas);
|
||||||
|
|
||||||
|
// Reaction-diffusion parameters (Gray-Scott model)
|
||||||
|
const params = {
|
||||||
|
feed: 0.052,
|
||||||
|
kill: 0.060,
|
||||||
|
diffusionA: 1.0,
|
||||||
|
diffusionB: 0.5,
|
||||||
|
timeStep: 1.0,
|
||||||
|
gridSize: 4,
|
||||||
|
decay: 0.99,
|
||||||
|
complexity: 0.54,
|
||||||
|
connectedness: 0.53,
|
||||||
|
motion: 0.52,
|
||||||
|
pulse: 0.49,
|
||||||
|
energy: 487.6
|
||||||
|
};
|
||||||
|
|
||||||
|
// Initialize grids
|
||||||
|
const grid = [];
|
||||||
|
const nextGrid = [];
|
||||||
|
const sizeX = Math.floor(canvas.width / params.gridSize);
|
||||||
|
const sizeY = Math.floor(canvas.height / params.gridSize);
|
||||||
|
|
||||||
|
// Fill with initial noise
|
||||||
|
function initGrids() {
|
||||||
|
for (let i = 0; i < sizeX; i++) {
|
||||||
|
grid[i] = new Array(sizeY);
|
||||||
|
nextGrid[i] = new Array(sizeY);
|
||||||
|
for (let j = 0; j < sizeY; j++) {
|
||||||
|
// Start with sparse, motion-sensitive patterns
|
||||||
|
const base = (Math.random() * params.motion < 0.3) ? 0.1 : 0;
|
||||||
|
grid[i][j] = base + (Math.random() * params.connectedness * 0.2);
|
||||||
|
nextGrid[i][j] = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
initGrids();
|
||||||
|
|
||||||
|
// Reaction-diffusion step
|
||||||
|
function update() {
|
||||||
|
for (let x = 1; x < sizeX - 1; x++) {
|
||||||
|
for (let y = 1; y < sizeY - 1; y++) {
|
||||||
|
const a = grid[x][y];
|
||||||
|
const b = nextGrid[x][y];
|
||||||
|
|
||||||
|
// Laplacian diffusion
|
||||||
|
const laplacianA = (grid[x-1][y] + grid[x+1][y] + grid[x][y-1] + grid[x][y+1] - 4 * a) * params.diffusionA;
|
||||||
|
const laplacianB = (nextGrid[x-1][y] + nextGrid[x+1][y] + nextGrid[x][y-1] + nextGrid[x][y+1] - 4 * b) * params.diffusionB;
|
||||||
|
|
||||||
|
// Gray-Scott reaction
|
||||||
|
const reaction = a * b * b;
|
||||||
|
const newA = a + (params.diffusionA * laplacianA) - reaction + params.feed * (1 - a);
|
||||||
|
const newB = b + (params.diffusionB * laplacianB) + reaction - (params.kill + params.feed) * b;
|
||||||
|
|
||||||
|
// Apply decay based on lifespan
|
||||||
|
nextGrid[x][y] = Math.max(0, Math.min(1,
|
||||||
|
newB * params.decay
|
||||||
|
));
|
||||||
|
|
||||||
|
// Add pulse variations
|
||||||
|
if (Math.random() < params.pulse) {
|
||||||
|
nextGrid[x][y] = Math.min(1, nextGrid[x][y] + 0.2 * params.motion);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Swap grids and apply complexity variations
|
||||||
|
for (let x = 0; x < sizeX; x++) {
|
||||||
|
for (let y = 0; y < sizeY; y++) {
|
||||||
|
grid[x][y] = nextGrid[x][y];
|
||||||
|
// More intricate patterns in high complexity areas
|
||||||
|
if (Math.random() < params.complexity * 0.01) {
|
||||||
|
nextGrid[x][y] = grid[x][y] + (Math.random() - 0.5) * 0.3;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Drawing with dryness/monochrome palette
|
||||||
|
function draw() {
|
||||||
|
ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
|
||||||
|
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
||||||
|
|
||||||
|
const imageData = ctx.createImageData(sizeX, sizeY);
|
||||||
|
const data = imageData.data;
|
||||||
|
|
||||||
|
for (let y = 0; y < sizeY; y++) {
|
||||||
|
for (let x = 0; x < sizeX; x++) {
|
||||||
|
const val = grid[x][y];
|
||||||
|
const idx = (y * sizeX + x) * 4;
|
||||||
|
|
||||||
|
// Dry monochrome palette (high contrast)
|
||||||
|
const intensity = Math.floor(255 * val);
|
||||||
|
data[idx] = intensity;
|
||||||
|
data[idx + 1] = intensity;
|
||||||
|
data[idx + 2] = intensity;
|
||||||
|
data[idx + 3] = 255;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ctx.putImageData(imageData, 0, 0);
|
||||||
|
ctx.imageSmoothingEnabled = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Main animation loop
|
||||||
|
function animate() {
|
||||||
|
update();
|
||||||
|
draw();
|
||||||
|
requestAnimationFrame(animate);
|
||||||
|
}
|
||||||
|
animate();
|
||||||
|
</script>
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
|
```
|
||||||
Loading…
Add table
Reference in a new issue