feat: pattern editor

2025-10-12 12:28:33 +02:00
parent 9a75b23169
commit cb172595b3
16 changed files with 4816 additions and 3 deletions
--- a/presets/building-blocks.js
+++ b/presets/building-blocks.js
@@ -0,0 +1,494 @@
+// Building Blocks for Custom Presets
+// Extracted reusable components from existing presets
+
+const { hexToRgb, rgbToHex, lerpRgb, clamp, toIndex, samplePalette } = require('./frame-utils');
+
+/**
+ * Building Block Categories:
+ * 1. Shapes - Draw geometric shapes
+ * 2. Transforms - Position/scale/rotate operations  
+ * 3. Color Generators - Generate colors based on various algorithms
+ * 4. Animations - Time-based modifications
+ * 5. Compositors - Combine multiple elements
+ */
+
+// ==================== SHAPES ====================
+
+const Shapes = {
+  /**
+   * Draw a circle at a position with radius
+   */
+  circle: (frame, width, height, centerX, centerY, radius, color, intensity = 1.0) => {
+    for (let row = 0; row < height; row++) {
+      for (let col = 0; col < width; col++) {
+        const dx = col - centerX;
+        const dy = row - centerY;
+        const distance = Math.hypot(dx, dy);
+        
+        if (distance <= radius) {
+          const falloff = 1 - (distance / radius);
+          const pixelIntensity = falloff * intensity;
+          setPixelColor(frame, col, row, width, color, pixelIntensity);
+        }
+      }
+    }
+  },
+
+  /**
+   * Draw a rectangle
+   */
+  rectangle: (frame, width, height, x, y, rectWidth, rectHeight, color, intensity = 1.0) => {
+    for (let row = Math.floor(y); row < Math.min(height, y + rectHeight); row++) {
+      for (let col = Math.floor(x); col < Math.min(width, x + rectWidth); col++) {
+        if (row >= 0 && col >= 0) {
+          setPixelColor(frame, col, row, width, color, intensity);
+        }
+      }
+    }
+  },
+
+  /**
+   * Draw a line from point A to point B
+   */
+  line: (frame, width, height, x1, y1, x2, y2, color, thickness = 1, intensity = 1.0) => {
+    const dx = x2 - x1;
+    const dy = y2 - y1;
+    const distance = Math.hypot(dx, dy);
+    const steps = Math.ceil(distance);
+
+    for (let i = 0; i <= steps; i++) {
+      const t = i / steps;
+      const x = x1 + dx * t;
+      const y = y1 + dy * t;
+
+      // Draw with thickness
+      for (let ty = -thickness / 2; ty <= thickness / 2; ty++) {
+        for (let tx = -thickness / 2; tx <= thickness / 2; tx++) {
+          const px = Math.round(x + tx);
+          const py = Math.round(y + ty);
+          if (px >= 0 && px < width && py >= 0 && py < height) {
+            setPixelColor(frame, px, py, width, color, intensity);
+          }
+        }
+      }
+    }
+  },
+
+  /**
+   * Draw a triangle
+   */
+  triangle: (frame, width, height, x1, y1, x2, y2, x3, y3, color, intensity = 1.0) => {
+    // Simple filled triangle using barycentric coordinates
+    const minX = Math.max(0, Math.floor(Math.min(x1, x2, x3)));
+    const maxX = Math.min(width - 1, Math.ceil(Math.max(x1, x2, x3)));
+    const minY = Math.max(0, Math.floor(Math.min(y1, y2, y3)));
+    const maxY = Math.min(height - 1, Math.ceil(Math.max(y1, y2, y3)));
+
+    for (let row = minY; row <= maxY; row++) {
+      for (let col = minX; col <= maxX; col++) {
+        if (isPointInTriangle(col, row, x1, y1, x2, y2, x3, y3)) {
+          setPixelColor(frame, col, row, width, color, intensity);
+        }
+      }
+    }
+  },
+
+  /**
+   * Draw a single pixel/point
+   */
+  point: (frame, width, height, x, y, color, intensity = 1.0) => {
+    const col = Math.round(x);
+    const row = Math.round(y);
+    if (col >= 0 && col < width && row >= 0 && row < height) {
+      setPixelColor(frame, col, row, width, color, intensity);
+    }
+  },
+
+  /**
+   * Draw a blob (soft circle with energy field)
+   */
+  blob: (frame, width, height, centerX, centerY, radius, color, falloffPower = 2) => {
+    for (let row = 0; row < height; row++) {
+      for (let col = 0; col < width; col++) {
+        const dx = col - centerX;
+        const dy = row - centerY;
+        const distance = Math.hypot(dx, dy);
+        const falloff = Math.max(0, 1 - distance / radius);
+        const intensity = Math.pow(falloff, falloffPower);
+        
+        if (intensity > 0.01) {
+          setPixelColor(frame, col, row, width, color, intensity);
+        }
+      }
+    }
+  },
+};
+
+// ==================== TRANSFORMS ====================
+
+const Transforms = {
+  /**
+   * Rotate a point around a center
+   */
+  rotate: (x, y, centerX, centerY, angle) => {
+    const cos = Math.cos(angle);
+    const sin = Math.sin(angle);
+    const dx = x - centerX;
+    const dy = y - centerY;
+    
+    return {
+      x: centerX + dx * cos - dy * sin,
+      y: centerY + dx * sin + dy * cos,
+    };
+  },
+
+  /**
+   * Scale a point from a center
+   */
+  scale: (x, y, centerX, centerY, scaleX, scaleY) => {
+    return {
+      x: centerX + (x - centerX) * scaleX,
+      y: centerY + (y - centerY) * scaleY,
+    };
+  },
+
+  /**
+   * Translate a point
+   */
+  translate: (x, y, dx, dy) => {
+    return {
+      x: x + dx,
+      y: y + dy,
+    };
+  },
+
+  /**
+   * Apply multiple transforms in sequence
+   */
+  compose: (x, y, transforms) => {
+    let point = { x, y };
+    for (const transform of transforms) {
+      point = transform(point.x, point.y);
+    }
+    return point;
+  },
+};
+
+// ==================== COLOR GENERATORS ====================
+
+const ColorGenerators = {
+  /**
+   * Solid color
+   */
+  solid: (color) => () => color,
+
+  /**
+   * Linear gradient between two colors
+   */
+  gradient: (color1, color2) => (t) => {
+    const rgb1 = hexToRgb(color1);
+    const rgb2 = hexToRgb(color2);
+    return rgbToHex(lerpRgb(rgb1, rgb2, clamp(t, 0, 1)));
+  },
+
+  /**
+   * Multi-stop gradient (palette)
+   */
+  palette: (colorStops) => (t) => {
+    const paletteStops = colorStops.map(stop => ({
+      stop: stop.position,
+      color: hexToRgb(stop.color),
+    }));
+    return samplePalette(paletteStops, clamp(t, 0, 1));
+  },
+
+  /**
+   * Rainbow color wheel
+   */
+  rainbow: () => (t) => {
+    const pos = Math.floor(clamp(t, 0, 1) * 255);
+    let r, g, b;
+    
+    const wheelPos = 255 - pos;
+    if (wheelPos < 85) {
+      r = 255 - wheelPos * 3;
+      g = 0;
+      b = wheelPos * 3;
+    } else if (wheelPos < 170) {
+      const adjusted = wheelPos - 85;
+      r = 0;
+      g = adjusted * 3;
+      b = 255 - adjusted * 3;
+    } else {
+      const adjusted = wheelPos - 170;
+      r = adjusted * 3;
+      g = 255 - adjusted * 3;
+      b = 0;
+    }
+    
+    return rgbToHex({ r, g, b });
+  },
+
+  /**
+   * HSV to RGB color generation
+   */
+  hsv: (hue, saturation = 1.0, value = 1.0) => () => {
+    const h = hue / 60;
+    const c = value * saturation;
+    const x = c * (1 - Math.abs((h % 2) - 1));
+    const m = value - c;
+    
+    let r, g, b;
+    
+    if (h < 1) {
+      [r, g, b] = [c, x, 0];
+    } else if (h < 2) {
+      [r, g, b] = [x, c, 0];
+    } else if (h < 3) {
+      [r, g, b] = [0, c, x];
+    } else if (h < 4) {
+      [r, g, b] = [0, x, c];
+    } else if (h < 5) {
+      [r, g, b] = [x, 0, c];
+    } else {
+      [r, g, b] = [c, 0, x];
+    }
+    
+    return rgbToHex({
+      r: Math.round((r + m) * 255),
+      g: Math.round((g + m) * 255),
+      b: Math.round((b + m) * 255),
+    });
+  },
+
+  /**
+   * Radial gradient from center
+   */
+  radial: (color1, color2, centerX, centerY, maxRadius) => (x, y) => {
+    const dx = x - centerX;
+    const dy = y - centerY;
+    const distance = Math.hypot(dx, dy);
+    const t = clamp(distance / maxRadius, 0, 1);
+    
+    const rgb1 = hexToRgb(color1);
+    const rgb2 = hexToRgb(color2);
+    return rgbToHex(lerpRgb(rgb1, rgb2, t));
+  },
+};
+
+// ==================== ANIMATIONS ====================
+
+const Animations = {
+  /**
+   * Linear movement
+   */
+  linearMove: (startX, startY, endX, endY, duration) => {
+    const startTime = Date.now();
+    return () => {
+      const elapsed = (Date.now() - startTime) / 1000;
+      const t = clamp((elapsed % duration) / duration, 0, 1);
+      return {
+        x: startX + (endX - startX) * t,
+        y: startY + (endY - startY) * t,
+        t,
+      };
+    };
+  },
+
+  /**
+   * Oscillating movement (sine wave)
+   */
+  oscillate: (center, amplitude, frequency, phase = 0) => {
+    const startTime = Date.now();
+    return () => {
+      const elapsed = (Date.now() - startTime) / 1000;
+      const value = center + amplitude * Math.sin(2 * Math.PI * frequency * elapsed + phase);
+      return { value, elapsed };
+    };
+  },
+
+  /**
+   * Rotation animation
+   */
+  rotation: (speed) => {
+    const startTime = Date.now();
+    return () => {
+      const elapsed = (Date.now() - startTime) / 1000;
+      return { angle: elapsed * speed * Math.PI * 2, elapsed };
+    };
+  },
+
+  /**
+   * Pulsing animation (scale)
+   */
+  pulse: (minScale, maxScale, frequency) => {
+    const startTime = Date.now();
+    return () => {
+      const elapsed = (Date.now() - startTime) / 1000;
+      const t = (Math.sin(2 * Math.PI * frequency * elapsed) + 1) / 2;
+      return { scale: minScale + (maxScale - minScale) * t, t, elapsed };
+    };
+  },
+
+  /**
+   * Bounce physics
+   */
+  bounce: (position, velocity, bounds) => {
+    let pos = position;
+    let vel = velocity;
+    
+    return (dt) => {
+      pos += vel * dt;
+      
+      if (pos < bounds.min) {
+        pos = bounds.min + (bounds.min - pos);
+        vel = Math.abs(vel);
+      } else if (pos > bounds.max) {
+        pos = bounds.max - (pos - bounds.max);
+        vel = -Math.abs(vel);
+      }
+      
+      return { position: pos, velocity: vel };
+    };
+  },
+
+  /**
+   * Fade in/out animation
+   */
+  fade: (duration, fadeIn = true) => {
+    const startTime = Date.now();
+    return () => {
+      const elapsed = (Date.now() - startTime) / 1000;
+      const t = clamp(elapsed / duration, 0, 1);
+      return { intensity: fadeIn ? t : (1 - t), t, elapsed };
+    };
+  },
+};
+
+// ==================== PATTERNS ====================
+
+const Patterns = {
+  /**
+   * Trail effect (fade previous frames)
+   */
+  trail: (frame, decayFactor = 0.8) => {
+    for (let i = 0; i < frame.length; i++) {
+      const rgb = hexToRgb(frame[i]);
+      frame[i] = rgbToHex({
+        r: Math.round(rgb.r * decayFactor),
+        g: Math.round(rgb.g * decayFactor),
+        b: Math.round(rgb.b * decayFactor),
+      });
+    }
+  },
+
+  /**
+   * Energy field (distance-based intensity)
+   */
+  energyField: (frame, width, height, points, colorGenerator) => {
+    for (let row = 0; row < height; row++) {
+      for (let col = 0; col < width; col++) {
+        let totalEnergy = 0;
+        
+        points.forEach(point => {
+          const dx = col - point.x;
+          const dy = row - point.y;
+          const distance = Math.hypot(dx, dy);
+          const falloff = Math.max(0, 1 - distance / point.radius);
+          totalEnergy += point.intensity * Math.pow(falloff, 2);
+        });
+        
+        const energy = clamp(totalEnergy, 0, 1);
+        const color = colorGenerator(energy);
+        frame[toIndex(col, row, width)] = color;
+      }
+    }
+  },
+
+  /**
+   * Radial pattern from center
+   */
+  radial: (frame, width, height, centerX, centerY, colorGenerator, intensity = 1.0) => {
+    const maxRadius = Math.hypot(width / 2, height / 2);
+    
+    for (let row = 0; row < height; row++) {
+      for (let col = 0; col < width; col++) {
+        const dx = col - centerX;
+        const dy = row - centerY;
+        const distance = Math.hypot(dx, dy);
+        const t = clamp(distance / maxRadius, 0, 1);
+        
+        const color = colorGenerator(t);
+        setPixelColor(frame, col, row, width, color, intensity);
+      }
+    }
+  },
+
+  /**
+   * Angular/spiral pattern
+   */
+  spiral: (frame, width, height, centerX, centerY, arms, rotation, colorGenerator, intensity = 1.0) => {
+    const maxRadius = Math.hypot(width / 2, height / 2);
+    
+    for (let row = 0; row < height; row++) {
+      for (let col = 0; col < width; col++) {
+        const dx = col - centerX;
+        const dy = row - centerY;
+        const distance = Math.hypot(dx, dy);
+        const angle = Math.atan2(dy, dx);
+        
+        const spiralValue = (Math.sin(arms * (angle + rotation)) + 1) / 2;
+        const radiusValue = distance / maxRadius;
+        const t = clamp(spiralValue * 0.5 + radiusValue * 0.5, 0, 1);
+        
+        const color = colorGenerator(t);
+        setPixelColor(frame, col, row, width, color, intensity);
+      }
+    }
+  },
+};
+
+// ==================== HELPER FUNCTIONS ====================
+
+function setPixelColor(frame, col, row, width, color, intensity = 1.0) {
+  const index = toIndex(col, row, width);
+  
+  if (intensity >= 1.0) {
+    frame[index] = color;
+  } else {
+    const currentRgb = hexToRgb(frame[index]);
+    const newRgb = hexToRgb(color);
+    
+    const blended = {
+      r: Math.round(currentRgb.r + (newRgb.r - currentRgb.r) * intensity),
+      g: Math.round(currentRgb.g + (newRgb.g - currentRgb.g) * intensity),
+      b: Math.round(currentRgb.b + (newRgb.b - currentRgb.b) * intensity),
+    };
+    
+    frame[index] = rgbToHex(blended);
+  }
+}
+
+function isPointInTriangle(px, py, x1, y1, x2, y2, x3, y3) {
+  const d1 = sign(px, py, x1, y1, x2, y2);
+  const d2 = sign(px, py, x2, y2, x3, y3);
+  const d3 = sign(px, py, x3, y3, x1, y1);
+  
+  const hasNeg = (d1 < 0) || (d2 < 0) || (d3 < 0);
+  const hasPos = (d1 > 0) || (d2 > 0) || (d3 > 0);
+  
+  return !(hasNeg && hasPos);
+}
+
+function sign(px, py, x1, y1, x2, y2) {
+  return (px - x2) * (y1 - y2) - (x1 - x2) * (py - y2);
+}
+
+module.exports = {
+  Shapes,
+  Transforms,
+  ColorGenerators,
+  Animations,
+  Patterns,
+};
+
--- a/presets/custom-preset.js
+++ b/presets/custom-preset.js
@@ -0,0 +1,417 @@
+// Custom Preset - A configurable preset based on JSON configuration
+
+const BasePreset = require('./base-preset');
+const { createFrame } = require('./frame-utils');
+const { Shapes, Transforms, ColorGenerators, Animations, Patterns } = require('./building-blocks');
+
+/**
+ * Custom Preset Configuration Schema:
+ * 
+ * {
+ *   "name": "My Custom Preset",
+ *   "description": "Description of the preset",
+ *   "layers": [
+ *     {
+ *       "type": "shape",
+ *       "shape": "circle|rectangle|triangle|line|point|blob",
+ *       "position": { "x": 8, "y": 8 },
+ *       "size": { "width": 5, "height": 5, "radius": 3 },
+ *       "color": {
+ *         "type": "solid|gradient|palette|rainbow|radial",
+ *         "value": "#ff0000",
+ *         "stops": [...]
+ *       },
+ *       "animation": {
+ *         "type": "move|rotate|scale|pulse|fade|bounce",
+ *         "params": { ... }
+ *       },
+ *       "blendMode": "normal|add|multiply"
+ *     },
+ *     {
+ *       "type": "pattern",
+ *       "pattern": "trail|energyField|radial|spiral",
+ *       "params": { ... }
+ *     }
+ *   ],
+ *   "parameters": {
+ *     "speed": { "type": "range", "min": 0.1, "max": 2.0, "default": 1.0 },
+ *     ...
+ *   }
+ * }
+ */
+
+class CustomPreset extends BasePreset {
+  constructor(width = 16, height = 16, configuration = null) {
+    super(width, height);
+    
+    this.configuration = configuration || this.getDefaultConfiguration();
+    this.animationStates = new Map();
+    this.time = 0;
+    this.lastFrameTime = Date.now();
+    
+    this.initializeParameters();
+    this.initializeAnimations();
+  }
+
+  getDefaultConfiguration() {
+    return {
+      name: 'Custom Preset',
+      description: 'A configurable preset',
+      layers: [],
+      parameters: {
+        speed: { type: 'range', min: 0.1, max: 2.0, step: 0.1, default: 1.0 },
+        brightness: { type: 'range', min: 0.1, max: 1.0, step: 0.1, default: 1.0 },
+      },
+    };
+  }
+
+  setConfiguration(configuration) {
+    this.configuration = configuration;
+    this.initializeParameters();
+    this.initializeAnimations();
+  }
+
+  initializeParameters() {
+    this.defaultParameters = {};
+    
+    if (this.configuration.parameters) {
+      Object.entries(this.configuration.parameters).forEach(([name, config]) => {
+        this.defaultParameters[name] = config.default;
+      });
+    }
+    
+    this.resetToDefaults();
+  }
+
+  initializeAnimations() {
+    this.animationStates.clear();
+    
+    this.configuration.layers?.forEach((layer, index) => {
+      if (layer.animation) {
+        const animation = this.createAnimation(layer.animation);
+        this.animationStates.set(index, animation);
+      }
+    });
+  }
+
+  createAnimation(animConfig) {
+    const type = animConfig.type;
+    const params = animConfig.params || {};
+    
+    switch (type) {
+      case 'move':
+        return Animations.linearMove(
+          params.startX || 0,
+          params.startY || 0,
+          params.endX || this.width,
+          params.endY || this.height,
+          params.duration || 2.0
+        );
+      
+      case 'rotate':
+        return Animations.rotation(params.speed || 1.0);
+      
+      case 'pulse':
+        return Animations.pulse(
+          params.minScale || 0.5,
+          params.maxScale || 1.5,
+          params.frequency || 1.0
+        );
+      
+      case 'fade':
+        return Animations.fade(
+          params.duration || 2.0,
+          params.fadeIn !== false
+        );
+      
+      case 'oscillateX':
+        return Animations.oscillate(
+          params.center || this.width / 2,
+          params.amplitude || this.width / 4,
+          params.frequency || 0.5,
+          params.phase || 0
+        );
+      
+      case 'oscillateY':
+        return Animations.oscillate(
+          params.center || this.height / 2,
+          params.amplitude || this.height / 4,
+          params.frequency || 0.5,
+          params.phase || 0
+        );
+      
+      default:
+        return () => ({});
+    }
+  }
+
+  createColorGenerator(colorConfig) {
+    if (!colorConfig) {
+      return ColorGenerators.solid('ff0000');
+    }
+    
+    const type = colorConfig.type || 'solid';
+    
+    switch (type) {
+      case 'solid':
+        return ColorGenerators.solid(colorConfig.value || 'ff0000');
+      
+      case 'gradient':
+        return ColorGenerators.gradient(
+          colorConfig.color1 || 'ff0000',
+          colorConfig.color2 || '0000ff'
+        );
+      
+      case 'palette':
+        return ColorGenerators.palette(colorConfig.stops || [
+          { position: 0, color: '000000' },
+          { position: 1, color: 'ffffff' }
+        ]);
+      
+      case 'rainbow':
+        return ColorGenerators.rainbow();
+      
+      case 'radial':
+        return ColorGenerators.radial(
+          colorConfig.color1 || 'ff0000',
+          colorConfig.color2 || '0000ff',
+          colorConfig.centerX || this.width / 2,
+          colorConfig.centerY || this.height / 2,
+          colorConfig.maxRadius || Math.hypot(this.width / 2, this.height / 2)
+        );
+      
+      default:
+        return ColorGenerators.solid('ff0000');
+    }
+  }
+
+  renderFrame() {
+    const now = Date.now();
+    const deltaTime = (now - this.lastFrameTime) / 1000;
+    this.lastFrameTime = now;
+    
+    const speed = this.getParameter('speed') || 1.0;
+    const brightness = this.getParameter('brightness') || 1.0;
+    this.time += deltaTime * speed;
+    
+    let frame = createFrame(this.width, this.height, '000000');
+    
+    // Render each layer
+    this.configuration.layers?.forEach((layer, index) => {
+      this.renderLayer(frame, layer, index, brightness);
+    });
+    
+    return frame;
+  }
+
+  renderLayer(frame, layer, layerIndex, globalBrightness) {
+    const type = layer.type;
+    
+    if (type === 'shape') {
+      this.renderShape(frame, layer, layerIndex, globalBrightness);
+    } else if (type === 'pattern') {
+      this.renderPattern(frame, layer, layerIndex, globalBrightness);
+    }
+  }
+
+  renderShape(frame, layer, layerIndex, globalBrightness) {
+    let position = layer.position || { x: this.width / 2, y: this.height / 2 };
+    let size = layer.size || { radius: 3 };
+    let rotation = 0;
+    let scale = 1.0;
+    let intensity = (layer.intensity || 1.0) * globalBrightness;
+    
+    // Apply animation
+    if (this.animationStates.has(layerIndex)) {
+      const animation = this.animationStates.get(layerIndex);
+      const animState = animation();
+      
+      if (animState.x !== undefined && animState.y !== undefined) {
+        position = { x: animState.x, y: animState.y };
+      }
+      
+      if (animState.angle !== undefined) {
+        rotation = animState.angle;
+      }
+      
+      if (animState.scale !== undefined) {
+        scale = animState.scale;
+      }
+      
+      if (animState.intensity !== undefined) {
+        intensity *= animState.intensity;
+      }
+      
+      if (animState.value !== undefined && layer.animation?.axis === 'x') {
+        position.x = animState.value;
+      } else if (animState.value !== undefined && layer.animation?.axis === 'y') {
+        position.y = animState.value;
+      }
+    }
+    
+    // Create color generator
+    const colorGen = this.createColorGenerator(layer.color);
+    const color = typeof colorGen === 'function' ? colorGen(0.5) : colorGen;
+    
+    // Apply scale to size
+    const scaledSize = {
+      radius: (size.radius || 3) * scale,
+      width: (size.width || 5) * scale,
+      height: (size.height || 5) * scale,
+    };
+    
+    // Render shape
+    const shapeType = layer.shape || 'circle';
+    
+    switch (shapeType) {
+      case 'circle':
+        Shapes.circle(
+          frame,
+          this.width,
+          this.height,
+          position.x,
+          position.y,
+          scaledSize.radius,
+          color,
+          intensity
+        );
+        break;
+      
+      case 'rectangle':
+        Shapes.rectangle(
+          frame,
+          this.width,
+          this.height,
+          position.x - scaledSize.width / 2,
+          position.y - scaledSize.height / 2,
+          scaledSize.width,
+          scaledSize.height,
+          color,
+          intensity
+        );
+        break;
+      
+      case 'blob':
+        Shapes.blob(
+          frame,
+          this.width,
+          this.height,
+          position.x,
+          position.y,
+          scaledSize.radius,
+          color,
+          layer.falloffPower || 2
+        );
+        break;
+      
+      case 'point':
+        Shapes.point(
+          frame,
+          this.width,
+          this.height,
+          position.x,
+          position.y,
+          color,
+          intensity
+        );
+        break;
+      
+      case 'triangle':
+        // Triangle with rotation
+        const triSize = scaledSize.radius || 3;
+        const points = [
+          { x: 0, y: -triSize },
+          { x: -triSize, y: triSize },
+          { x: triSize, y: triSize }
+        ];
+        
+        const rotated = points.map(p => 
+          Transforms.rotate(p.x, p.y, 0, 0, rotation)
+        );
+        
+        Shapes.triangle(
+          frame,
+          this.width,
+          this.height,
+          position.x + rotated[0].x,
+          position.y + rotated[0].y,
+          position.x + rotated[1].x,
+          position.y + rotated[1].y,
+          position.x + rotated[2].x,
+          position.y + rotated[2].y,
+          color,
+          intensity
+        );
+        break;
+      
+      case 'line':
+        const lineParams = layer.lineParams || {};
+        Shapes.line(
+          frame,
+          this.width,
+          this.height,
+          lineParams.x1 || position.x,
+          lineParams.y1 || position.y,
+          lineParams.x2 || position.x + 5,
+          lineParams.y2 || position.y + 5,
+          color,
+          lineParams.thickness || 1,
+          intensity
+        );
+        break;
+    }
+  }
+
+  renderPattern(frame, layer, layerIndex, globalBrightness) {
+    const patternType = layer.pattern;
+    const params = layer.params || {};
+    const intensity = (layer.intensity || 1.0) * globalBrightness;
+    
+    switch (patternType) {
+      case 'trail':
+        Patterns.trail(frame, params.decayFactor || 0.8);
+        break;
+      
+      case 'radial':
+        const radialColorGen = this.createColorGenerator(layer.color);
+        Patterns.radial(
+          frame,
+          this.width,
+          this.height,
+          params.centerX || this.width / 2,
+          params.centerY || this.height / 2,
+          radialColorGen,
+          intensity
+        );
+        break;
+      
+      case 'spiral':
+        const spiralColorGen = this.createColorGenerator(layer.color);
+        Patterns.spiral(
+          frame,
+          this.width,
+          this.height,
+          params.centerX || this.width / 2,
+          params.centerY || this.height / 2,
+          params.arms || 5,
+          this.time * (params.rotationSpeed || 1.0),
+          spiralColorGen,
+          intensity
+        );
+        break;
+    }
+  }
+
+  getMetadata() {
+    return {
+      name: this.configuration.name || 'Custom Preset',
+      description: this.configuration.description || 'A custom configurable preset',
+      parameters: this.configuration.parameters || {},
+      width: this.width,
+      height: this.height,
+    };
+  }
+}
+
+module.exports = CustomPreset;
+
--- a/presets/examples/README.md
+++ b/presets/examples/README.md
@@ -0,0 +1,146 @@
+# Example Custom Presets
+
+This directory contains example custom preset configurations that demonstrate the capabilities of the LEDLab Preset Editor.
+
+## Available Examples
+
+### 1. Pulsing Circle (`pulsing-circle.json`)
+A simple preset featuring a single circle at the center that pulses in and out using rainbow colors.
+
+**Features:**
+- Rainbow color generation
+- Pulse animation (scale oscillation)
+- Centered positioning
+
+### 2. Bouncing Squares (`bouncing-squares.json`)
+Multiple colored rectangles bouncing around the matrix in different directions.
+
+**Features:**
+- Multiple layers with different shapes
+- Oscillating animations on X and Y axes
+- Different colors per layer
+- Phase offsets for varied motion
+
+### 3. Spiral Rainbow (`spiral-rainbow.json`)
+A rotating spiral pattern with a full rainbow gradient.
+
+**Features:**
+- Pattern layer (spiral)
+- Multi-stop color palette
+- Configurable rotation speed and arm count
+
+### 4. Moving Triangle (`moving-triangle.json`)
+A triangle that moves linearly across the screen with a gradient color scheme.
+
+**Features:**
+- Triangle shape
+- Linear movement animation
+- Gradient colors
+
+## How to Use
+
+1. Open the LEDLab application
+2. Navigate to the **🎨 Editor** view
+3. Click the **📥 Import JSON** button
+4. Select one of the example JSON files
+5. Review the configuration in the editor
+6. Click **▶️ Preview** to test on a selected node
+7. Modify parameters to customize
+8. Click **💾 Save** to store your customized version
+
+## Creating Your Own Presets
+
+Use these examples as templates for creating your own custom presets. The general structure is:
+
+```json
+{
+  "name": "Preset Name",
+  "description": "Description of what the preset does",
+  "layers": [
+    {
+      "type": "shape" | "pattern",
+      "shape": "circle" | "rectangle" | "triangle" | "blob" | "point" | "line",
+      "pattern": "trail" | "radial" | "spiral",
+      "position": { "x": 8, "y": 8 },
+      "size": { "radius": 3, "width": 5, "height": 5 },
+      "color": {
+        "type": "solid" | "gradient" | "palette" | "rainbow" | "radial",
+        "value": "hexcolor",
+        ...
+      },
+      "animation": {
+        "type": "move" | "rotate" | "pulse" | "oscillateX" | "oscillateY" | "fade",
+        "params": { ... }
+      }
+    }
+  ],
+  "parameters": {
+    "speed": { "type": "range", "min": 0.1, "max": 2.0, "step": 0.1, "default": 1.0 },
+    "brightness": { "type": "range", "min": 0.1, "max": 1.0, "step": 0.1, "default": 1.0 }
+  }
+}
+```
+
+## Building Blocks Reference
+
+### Shape Types
+- **circle**: Round shape with radius
+- **rectangle**: Four-sided shape with width and height
+- **triangle**: Three-sided shape with radius (determines size)
+- **blob**: Soft circle with energy field falloff
+- **point**: Single pixel
+- **line**: Line between two points
+
+### Pattern Types
+- **trail**: Fade effect on previous frames
+- **radial**: Gradient radiating from center
+- **spiral**: Rotating spiral arms
+
+### Color Types
+- **solid**: Single color
+- **gradient**: Linear blend between two colors
+- **palette**: Multi-stop gradient
+- **rainbow**: Color wheel effect
+- **radial**: Gradient from center outward
+
+### Animation Types
+- **move**: Linear movement from point A to B
+- **rotate**: Rotation around center
+- **pulse**: Scale oscillation
+- **oscillateX/Y**: Sine wave movement on X or Y axis
+- **fade**: Fade in or out
+
+## Tips
+
+1. **Layer Order Matters**: Layers are rendered in order, so later layers appear on top
+2. **Combine Multiple Shapes**: Create complex effects by layering shapes with different animations
+3. **Use Phase Offsets**: For oscillating animations, use different phase values to desynchronize motion
+4. **Experiment with Colors**: Try different color combinations and gradients
+5. **Start Simple**: Begin with one layer and gradually add complexity
+6. **Test Early**: Preview frequently to see how your changes look in real-time
+
+## Advanced Techniques
+
+### Creating Trails
+Add a trail pattern layer with high decay factor combined with moving shapes:
+
+```json
+{
+  "type": "pattern",
+  "pattern": "trail",
+  "params": {
+    "decayFactor": 0.85
+  }
+}
+```
+
+### Synchronized Motion
+Use the same frequency and phase for oscillating animations to create synchronized movement.
+
+### Color Cycling
+Use the rainbow color type with pulse or rotate animations for dynamic color effects.
+
+## Need Help?
+
+Refer to the main LEDLab documentation or experiment in the editor. The preview function lets you see changes in real-time!
+
--- a/presets/examples/bouncing-squares.json
+++ b/presets/examples/bouncing-squares.json
@@ -0,0 +1,100 @@
+{
+  "name": "Bouncing Squares",
+  "description": "Multiple colored squares bouncing around",
+  "layers": [
+    {
+      "type": "shape",
+      "shape": "rectangle",
+      "position": {
+        "x": 8,
+        "y": 8
+      },
+      "size": {
+        "width": 3,
+        "height": 3
+      },
+      "color": {
+        "type": "solid",
+        "value": "ff0000"
+      },
+      "intensity": 1.0,
+      "animation": {
+        "type": "oscillateX",
+        "axis": "x",
+        "params": {
+          "center": 8,
+          "amplitude": 6,
+          "frequency": 0.5,
+          "phase": 0
+        }
+      }
+    },
+    {
+      "type": "shape",
+      "shape": "rectangle",
+      "position": {
+        "x": 8,
+        "y": 8
+      },
+      "size": {
+        "width": 3,
+        "height": 3
+      },
+      "color": {
+        "type": "solid",
+        "value": "00ff00"
+      },
+      "intensity": 1.0,
+      "animation": {
+        "type": "oscillateY",
+        "axis": "y",
+        "params": {
+          "center": 8,
+          "amplitude": 6,
+          "frequency": 0.7,
+          "phase": 1.57
+        }
+      }
+    },
+    {
+      "type": "shape",
+      "shape": "rectangle",
+      "position": {
+        "x": 8,
+        "y": 8
+      },
+      "size": {
+        "width": 2,
+        "height": 2
+      },
+      "color": {
+        "type": "solid",
+        "value": "0000ff"
+      },
+      "intensity": 1.0,
+      "animation": {
+        "type": "rotate",
+        "params": {
+          "speed": 1.0
+        }
+      }
+    }
+  ],
+  "parameters": {
+    "speed": {
+      "type": "range",
+      "min": 0.1,
+      "max": 2.0,
+      "step": 0.1,
+      "default": 1.0
+    },
+    "brightness": {
+      "type": "range",
+      "min": 0.1,
+      "max": 1.0,
+      "step": 0.1,
+      "default": 1.0
+    }
+  }
+}
+
--- a/presets/examples/moving-triangle.json
+++ b/presets/examples/moving-triangle.json
@@ -0,0 +1,50 @@
+{
+  "name": "Moving Triangle",
+  "description": "A triangle moving back and forth with gradient colors",
+  "layers": [
+    {
+      "type": "shape",
+      "shape": "triangle",
+      "position": {
+        "x": 8,
+        "y": 8
+      },
+      "size": {
+        "radius": 4
+      },
+      "color": {
+        "type": "gradient",
+        "color1": "ff00ff",
+        "color2": "00ffff"
+      },
+      "intensity": 1.0,
+      "animation": {
+        "type": "move",
+        "params": {
+          "startX": 3,
+          "startY": 8,
+          "endX": 13,
+          "endY": 8,
+          "duration": 2.0
+        }
+      }
+    }
+  ],
+  "parameters": {
+    "speed": {
+      "type": "range",
+      "min": 0.1,
+      "max": 2.0,
+      "step": 0.1,
+      "default": 1.0
+    },
+    "brightness": {
+      "type": "range",
+      "min": 0.1,
+      "max": 1.0,
+      "step": 0.1,
+      "default": 1.0
+    }
+  }
+}
+
--- a/presets/examples/pulsing-circle.json
+++ b/presets/examples/pulsing-circle.json
@@ -0,0 +1,46 @@
+{
+  "name": "Pulsing Circle",
+  "description": "A pulsing circle in the center with rainbow colors",
+  "layers": [
+    {
+      "type": "shape",
+      "shape": "circle",
+      "position": {
+        "x": 8,
+        "y": 8
+      },
+      "size": {
+        "radius": 4
+      },
+      "color": {
+        "type": "rainbow"
+      },
+      "intensity": 1.0,
+      "animation": {
+        "type": "pulse",
+        "params": {
+          "minScale": 0.5,
+          "maxScale": 1.5,
+          "frequency": 0.8
+        }
+      }
+    }
+  ],
+  "parameters": {
+    "speed": {
+      "type": "range",
+      "min": 0.1,
+      "max": 2.0,
+      "step": 0.1,
+      "default": 1.0
+    },
+    "brightness": {
+      "type": "range",
+      "min": 0.1,
+      "max": 1.0,
+      "step": 0.1,
+      "default": 1.0
+    }
+  }
+}
+
--- a/presets/examples/spiral-rainbow.json
+++ b/presets/examples/spiral-rainbow.json
@@ -0,0 +1,66 @@
+{
+  "name": "Spiral Rainbow",
+  "description": "A rotating spiral pattern with rainbow gradient",
+  "layers": [
+    {
+      "type": "pattern",
+      "pattern": "spiral",
+      "color": {
+        "type": "palette",
+        "stops": [
+          {
+            "position": 0.0,
+            "color": "ff0000"
+          },
+          {
+            "position": 0.17,
+            "color": "ff8800"
+          },
+          {
+            "position": 0.33,
+            "color": "ffff00"
+          },
+          {
+            "position": 0.5,
+            "color": "00ff00"
+          },
+          {
+            "position": 0.67,
+            "color": "0088ff"
+          },
+          {
+            "position": 0.83,
+            "color": "8800ff"
+          },
+          {
+            "position": 1.0,
+            "color": "ff0088"
+          }
+        ]
+      },
+      "params": {
+        "centerX": 8,
+        "centerY": 8,
+        "arms": 5,
+        "rotationSpeed": 1.0
+      }
+    }
+  ],
+  "parameters": {
+    "speed": {
+      "type": "range",
+      "min": 0.1,
+      "max": 3.0,
+      "step": 0.1,
+      "default": 1.0
+    },
+    "brightness": {
+      "type": "range",
+      "min": 0.1,
+      "max": 1.0,
+      "step": 0.1,
+      "default": 1.0
+    }
+  }
+}
+