91 lines
3.3 KiB
JavaScript
91 lines
3.3 KiB
JavaScript
// Wormhole Tunnel preset for LEDLab
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const BasePreset = require('./base-preset');
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const { createFrame, frameToPayload, hexToRgb, samplePalette, toIndex, clamp } = require('./frame-utils');
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class WormholeTunnelPreset extends BasePreset {
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constructor(width = 16, height = 16) {
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super(width, height);
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this.timeSeconds = 0;
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this.paletteStops = [
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{ stop: 0.0, color: hexToRgb('010005') },
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{ stop: 0.2, color: hexToRgb('07204f') },
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{ stop: 0.45, color: hexToRgb('124aa0') },
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{ stop: 0.7, color: hexToRgb('36a5ff') },
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{ stop: 0.87, color: hexToRgb('99e6ff') },
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{ stop: 1.0, color: hexToRgb('f1fbff') },
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];
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this.defaultParameters = {
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ringDensity: 8,
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ringSpeed: 1.4,
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ringSharpness: 7.5,
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twistIntensity: 2.2,
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twistSpeed: 0.9,
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coreExponent: 1.6,
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brightness: 1.0,
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};
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}
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renderFrame() {
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this.timeSeconds += 0.016; // Assume 60 FPS
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const frame = createFrame(this.width, this.height);
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const brightness = this.getParameter('brightness') || 1.0;
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const cx = (this.width - 1) / 2;
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const cy = (this.height - 1) / 2;
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const radiusNorm = Math.hypot(cx, cy) || 1;
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for (let row = 0; row < this.height; ++row) {
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for (let col = 0; col < this.width; ++col) {
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const dx = col - cx;
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const dy = row - cy;
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const radius = Math.hypot(dx, dy) / radiusNorm;
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const angle = Math.atan2(dy, dx);
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const radialPhase = radius * (this.getParameter('ringDensity') || 8) - this.timeSeconds * (this.getParameter('ringSpeed') || 1.4);
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const ring = Math.exp(-Math.pow(Math.sin(radialPhase * Math.PI), 2) * (this.getParameter('ringSharpness') || 7.5));
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const twist = Math.sin(angle * (this.getParameter('twistIntensity') || 2.2) + this.timeSeconds * (this.getParameter('twistSpeed') || 0.9)) * 0.35 + 0.65;
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const depth = Math.pow(clamp(1 - radius, 0, 1), this.getParameter('coreExponent') || 1.6);
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const value = clamp(ring * 0.6 + depth * 0.3 + twist * 0.1, 0, 1);
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let color = samplePalette(this.paletteStops, value);
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// Apply brightness
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if (brightness < 1.0) {
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const rgb = hexToRgb(color);
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color = Math.round(rgb.r * brightness).toString(16).padStart(2, '0') +
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Math.round(rgb.g * brightness).toString(16).padStart(2, '0') +
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Math.round(rgb.b * brightness).toString(16).padStart(2, '0');
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}
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frame[toIndex(col, row, this.width)] = color;
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}
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}
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return frame;
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}
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getMetadata() {
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return {
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name: 'Wormhole Tunnel',
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description: 'Hypnotic tunnel effect with rotating rings',
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parameters: {
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ringDensity: { type: 'range', min: 4, max: 12, step: 1, default: 8 },
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ringSpeed: { type: 'range', min: 0.5, max: 2.5, step: 0.1, default: 1.4 },
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ringSharpness: { type: 'range', min: 3, max: 12, step: 0.5, default: 7.5 },
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twistIntensity: { type: 'range', min: 1.0, max: 4.0, step: 0.2, default: 2.2 },
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twistSpeed: { type: 'range', min: 0.3, max: 1.5, step: 0.1, default: 0.9 },
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coreExponent: { type: 'range', min: 1.0, max: 2.5, step: 0.1, default: 1.6 },
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brightness: { type: 'range', min: 0.3, max: 1.0, step: 0.1, default: 1.0 },
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},
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width: this.width,
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height: this.height,
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};
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}
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}
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module.exports = WormholeTunnelPreset;
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