birth: Fractal Bloom in Monochrome

2026-03-25 19:31:29 +00:00 · 2026-03-25 19:31:29 +00:00 · 2eeb2e6cfb
commit 2eeb2e6cfb
parent b1404cf85f
1 changed files with 195 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,195 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Fractal Bloom</title>
+    <style>
+        body {
+            margin: 0;
+            overflow: hidden;
+            background: #0a0a0a;
+            font-family: 'Courier New', monospace;
+            color: #ccc;
+        }
+        #attribution {
+            position: absolute;
+            left: 20px;
+            bottom: 20px;
+            font-size: 10px;
+            opacity: 0.5;
+            pointer-events: none;
+        }
+    </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');
+
+        function resizeCanvas() {
+            canvas.width = window.innerWidth;
+            canvas.height = window.innerHeight;
+        }
+
+        window.addEventListener('resize', resizeCanvas);
+        resizeCanvas();
+
+        // Parameters derived from spec
+        const params = {
+            motion: 0.453,
+            density: 0.441,
+            complexity: 0.531,
+            connectedness: 0.413,
+            lifespan: 0.546,
+            pulse: { avg: 0.97, min: 0.30, max: 2.00 },
+            tone: { dryness: 0.90 },
+            topology: {
+                nodes: 9,
+                branches: 9,
+                loops: 51,
+                maxDepth: 17,
+                thicknessRatio: 1.25,
+                fractalDim: 1.000,
+                energy: 42.9
+            }
+        };
+
+        // Fractal parameters
+        const maxDepth = Math.floor(10 + params.topology.maxDepth * 2);
+        const branchCount = Math.floor(3 + params.topology.branches * 0.5);
+        const growthRate = params.motion * 1.5;
+        const angleVariation = params.complexity * Math.PI * 0.8;
+        const segmentLength = 10 + params.density * 30;
+        const thickness = 0.5 + params.topology.thicknessRatio * 0.5;
+
+        // Color palette (dryness = monochrome)
+        const baseHue = 220;
+        const saturation = 10 + params.tone.dryness * 10;
+        const baseBrightness = 80;
+        const pulseEffect = () => 0.7 + params.pulse.avg * 0.3;
+
+        // Fractal state
+        const branches = [];
+        let time = 0;
+        let branchesCreated = 0;
+
+        // Initialize fractal
+        function initFractal() {
+            branches.length = 0;
+            branchesCreated = 0;
+            time = 0;
+
+            // Root branch
+            branches.push({
+                x: canvas.width / 2,
+                y: canvas.height,
+                angle: -Math.PI / 2,
+                length: 1,
+                depth: 0,
+                thickness: thickness * 5,
+                hue: baseHue,
+                brightness: baseBrightness,
+                children: []
+            });
+        }
+
+        // Grow fractal
+        function growFractal() {
+            if (branchesCreated >= maxDepth || Math.random() > growthRate) return;
+
+            const available = branches.filter(b => b.children.length < branchCount * 0.7);
+            if (available.length === 0) return;
+
+            const parent = available[Math.floor(Math.random() * available.length)];
+            const newAngle = parent.angle + (Math.random() - 0.5) * angleVariation;
+            const newLength = parent.length * (0.6 + Math.random() * 0.4);
+
+            const newBranch = {
+                x: parent.x + Math.cos(parent.angle) * parent.length * segmentLength,
+                y: parent.y + Math.sin(parent.angle) * parent.length * segmentLength,
+                angle: newAngle,
+                length: newLength,
+                depth: parent.depth + 1,
+                parent: parent,
+                thickness: parent.thickness * 0.7,
+                hue: baseHue + (parent.depth % 3) * 20,
+                brightness: baseBrightness * (0.7 + parent.depth * 0.05),
+                children: [],
+                creationTime: time,
+                maxLife: 100 + params.topology.maxDepth * 10
+            };
+
+            parent.children.push(newBranch);
+            branches.push(newBranch);
+            branchesCreated++;
+
+            // Add loops (close some branches back to ancestors)
+            if (params.topology.loops > 0 && parent.depth > 2 && Math.random() < 0.3) {
+                const loopTarget = branches[Math.floor(Math.random() * branches.length)];
+                if (loopTarget.depth < parent.depth) {
+                    newBranch.angle = Math.atan2(
+                        loopTarget.y - newBranch.y,
+                        loopTarget.x - newBranch.x
+                    );
+                }
+            }
+        }
+
+        // Draw fractal
+        function drawFractal() {
+            ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+            ctx.lineCap = 'round';
+            ctx.lineJoin = 'round';
+
+            branches.forEach(branch => {
+                const lifeRatio = (time - branch.creationTime) / branch.maxLife;
+                if (lifeRatio > 1) return;
+
+                const opacity = params.lifespan * (1 - lifeRatio * 0.7);
+                const pulse = pulseEffect() * (1 - lifeRatio * 0.5);
+                ctx.globalAlpha = opacity;
+
+                ctx.strokeStyle = `hsl(${branch.hue}, ${saturation}%, ${branch.brightness * pulse}%)`;
+                ctx.lineWidth = branch.thickness;
+
+                ctx.beginPath();
+                ctx.moveTo(branch.x, branch.y);
+
+                // Draw curved path to parent
+                const endX = branch.x + Math.cos(branch.angle) * branch.length * segmentLength;
+                const endY = branch.y + Math.sin(branch.angle) * branch.length * segmentLength;
+
+                // Quadratic curve for organic feel
+                const cp1x = branch.x + Math.cos(branch.angle) * branch.length * segmentLength * 0.3;
+                const cp1y = branch.y + Math.sin(branch.angle) * branch.length * segmentLength * 0.3;
+
+                ctx.quadraticCurveTo(cp1x, cp1y, endX, endY);
+                ctx.stroke();
+            });
+
+            ctx.globalAlpha = 1;
+        }
+
+        // Animation loop
+        function animate() {
+            growFractal();
+            drawFractal();
+            time++;
+
+            if (time > 2000 || branchesCreated >= maxDepth * 2) {
+                initFractal();
+            }
+
+            requestAnimationFrame(animate);
+        }
+
+        initFractal();
+        animate();
+    </script>
+</body>
+</html>