/* hero.mjs — one composition, grouped by craft / plex sheet.
   Edit any group independently. Every placeable layer has a uniform
   transform { x, y, rotation, scale } (x,y = centre offset in −1..1).
   Render:  node tools/render-composition.mjs compositions/hero.mjs out.svg 1600
*/
export const composition = {
  size: 1600,
  seed: 'MESON-5113',

  // ---- BACKGROUND — the lit substrate + surface craft ----
  background: {
    color: 'rgb(229,222,203)',
    film:  { opacity: 0.6, density: 0.5, seed: 8 },          // milky diffusion
    aging: { opacity: 0.5, scratches: 5, dust: 0.45, foxing: 0.5, seed: 5 },
    grain: { opacity: 0.42, intensity: 0.42, seed: 19 },
  },

  // ---- FIELD 1 — the ridgeline vacuum carpet (the sea) ----
  fieldSea: {
    enabled: true,
    transform: { x: 0, y: 0, rotation: 0, scale: 1 },
    seed: 'VACUUM-5113',
    color: { hueBack: 0.54, hueFront: 0.47, sat: 0.6 },
    layers: 3,
    blurPerLayer: [2.6, 1.1, 0],
    seedPerLayer: ['fieldA', 'fieldB', 'fieldC'],
    opacityPerLayer: [0.5, 0.72, 0.95],
    chaos: 0.32, blips: 0.7, mound: 0.3, horizonY: 0.36, lines: 46, overlap: 1.7,
  },

  // ---- FIELD 2 — the rippled perspective depth grid ----
  fieldGrid: {
    enabled: true,
    pos: 'over',                                   // 'over' | 'behind' the sea
    transform: { x: 0, y: 0, rotation: 0, scale: 1 },
    color: { hue: 0.56, hue2: 0.5, sat: 0.26, lightNear: 0.44, lightFar: 0.66 },
    opacity: 0.38,
    vp: [0, 0.0], dir: 0, spread: Math.PI * 2, rays: 30, depthLines: 17, rMin: 0.04, rMax: 3.0,
    ripple: { amp: 0.07, ampRad: 0.06, freqR: 2.4, freqA: 5, phase: 0 },
    layers: 2, blurPerLayer: [1.1, 0],
  },

  // ---- DISK — the shock "sun" (own centre / rotation / scale) ----
  disk: {
    enabled: true,
    transform: { x: 0.0, y: -0.25, rotation: 0, scale: 0.95 },
    hue: 0.06, sat: 0.82, size: 0.16, pressure: 0.85,
    intensity: 0.85, striations: 0.6, stain: 0.35, soften: 1.35,
  },

  // ---- BUBBLE — the particle event / tracks (decoupled from the disk) ----
  bubble: {
    enabled: true,
    transform: { x: 0.28, y: -0.1, rotation: 12, scale: 0.82 },
    palette: 'magentarise', saturation: 1.05, traceHue: 0,
    primaries: 18, sweepers: 5, cosmics: 6, eloss: 0.34, bfield: 1.0, deltaRate: 0.6,
  },

  // ---- FIDUCIARIES — frame-level "No 001" + arrow (never scales w/ event) ----
  fiduciaries: {
    enabled: true,
    label: 'No 001', pencil: '#39312a', width: 1.0, arrow: true, corners: false,
    // target defaults to the bubble centre; set explicitly to decouple:
    target: [0.28, -0.1],
    transform: { x: 0, y: 0, rotation: 0, scale: 1 },
  },
};