feat: ledlab

presets/spiral-bloom-preset.js

@@ -0,0 +1,81 @@
+// Spiral Bloom preset for LEDLab
+
+const BasePreset = require('./base-preset');
+const { createFrame, frameToPayload, hexToRgb, samplePalette, toIndex } = require('./frame-utils');
+
+class SpiralBloomPreset extends BasePreset {
+  constructor(width = 16, height = 16) {
+    super(width, height);
+    this.rotation = 0;
+    this.hueShift = 0;
+    this.paletteStops = [
+      { stop: 0.0, color: hexToRgb('051923') },
+      { stop: 0.2, color: hexToRgb('0c4057') },
+      { stop: 0.45, color: hexToRgb('1d7a70') },
+      { stop: 0.7, color: hexToRgb('39b15f') },
+      { stop: 0.88, color: hexToRgb('9dd54c') },
+      { stop: 1.0, color: hexToRgb('f7f5bc') },
+    ];
+    this.defaultParameters = {
+      rotationSpeed: 0.7,
+      hueSpeed: 0.2,
+      spiralArms: 5,
+      brightness: 1.0,
+    };
+  }
+
+  renderFrame() {
+    this.rotation += 0.016 * (this.getParameter('rotationSpeed') || 0.7);
+    this.hueShift += 0.016 * (this.getParameter('hueSpeed') || 0.2);
+
+    const frame = createFrame(this.width, this.height);
+    const brightness = this.getParameter('brightness') || 1.0;
+    const spiralArms = this.getParameter('spiralArms') || 5;
+
+    const cx = (this.width - 1) / 2;
+    const cy = (this.height - 1) / 2;
+    const radiusNorm = Math.hypot(cx, cy) || 1;
+
+    for (let row = 0; row < this.height; ++row) {
+      for (let col = 0; col < this.width; ++col) {
+        const dx = col - cx;
+        const dy = row - cy;
+        const radius = Math.hypot(dx, dy) / radiusNorm;
+        const angle = Math.atan2(dy, dx);
+        const arm = 0.5 + 0.5 * Math.sin(spiralArms * (angle + this.rotation) + this.hueShift * Math.PI * 2);
+        const value = Math.min(1, radius * 0.8 + arm * 0.4);
+
+        let color = samplePalette(this.paletteStops, value);
+
+        // Apply brightness
+        if (brightness < 1.0) {
+          const rgb = hexToRgb(color);
+          color = Math.round(rgb.r * brightness).toString(16).padStart(2, '0') +
+                  Math.round(rgb.g * brightness).toString(16).padStart(2, '0') +
+                  Math.round(rgb.b * brightness).toString(16).padStart(2, '0');
+        }
+
+        frame[toIndex(col, row, this.width)] = color;
+      }
+    }
+
+    return frame;
+  }
+
+  getMetadata() {
+    return {
+      name: 'Spiral Bloom',
+      description: 'Rotating spiral patterns blooming outward',
+      parameters: {
+        rotationSpeed: { type: 'range', min: 0.3, max: 1.5, step: 0.1, default: 0.7 },
+        hueSpeed: { type: 'range', min: 0.1, max: 0.5, step: 0.05, default: 0.2 },
+        spiralArms: { type: 'range', min: 3, max: 8, step: 1, default: 5 },
+        brightness: { type: 'range', min: 0.3, max: 1.0, step: 0.1, default: 1.0 },
+      },
+      width: this.width,
+      height: this.height,
+    };
+  }
+}
+
+module.exports = SpiralBloomPreset;