/* ============================================================
   qft-variations-perturb.mjs — sketch 08.
   New mechanics — fields perturbed BY their own physics:

     WAVEPACKETS — Gaussian local perturbation of the cubic
       (and schlegel) lattice; vertices push radially outward
       under a bell-curve falloff. The "particle" is now a
       feature OF the field, not a separate object placed on it.

     RIPPLES — concentric expanding wavefronts from a source
       point. Each ring a many-segmented polyline; renderer
       applies propagator decoration to each chord.

   Plus DENSER cubic (cubicN=2 → 125 vertices / ~300 edges) so
   more grid lines show the wavepacket distortion clearly.
   Output → output/qft/sketch08/
   ============================================================ */
import { writeFileSync, mkdirSync } from 'node:fs';
import { generateQFTScene } from '../src/qft/scene.js';
import { paramsFromSeed } from '../src/qft/params.js';
import { renderQFTSVG } from '../src/qft/renderer.js';

const BASE_SEED = 'FEYNMAN-7167';
const OUT_DIR = 'output/qft/sketch08';
const SIZE = 1800;
mkdirSync(OUT_DIR, { recursive: true });

const F = (hueStart, hueEnd, saturation, lightness, opacity, stroke) => {
  const f = { hueStart, hueEnd, saturation, lightness, opacity };
  if (stroke != null) f.stroke = stroke;
  return f;
};
const paper = (flat, glowInDelta = [16, 14, 12], glowOutDelta = [-22, -20, -18]) => ({
  flat,
  glowIn:  [flat[0] + glowInDelta[0],  flat[1] + glowInDelta[1],  flat[2] + glowInDelta[2]],
  glowOut: [flat[0] + glowOutDelta[0], flat[1] + glowOutDelta[1], flat[2] + glowOutDelta[2]],
});

// Wavepacket helper: pos + amp + sigma
const W = (x, y, amplitude, sigma) => ({ x, y, amplitude, sigma });
// Ripple helper: pos + ring count + r0 + dR + optional propagator
const R = (x, y, count = 6, r0 = 0.06, dR = 0.09, propagator = 'photon') =>
  ({ x, y, count, r0, dR, propagator });

const BASE = {
  cubicN: 2,                               // DENSER cubic — more grid lines so wavepacket bulges read
  photonCyclesPerUnit: 14,
  segmentsPerEdge: 8,                      // fewer segments per edge — denser mesh + many circles
  linkCount: 8,
  e8Style: 'nautilus',
  nautilusTurns: 2.4, nautilusPerTurn: 14, nautilusGrowth: 0.22,
};

const variations = [
  {
    name: '01_single-wavepacket-bulge',
    label: 'Single wavepacket · lattice bulges around a centred particle',
    overrides: {
      ...BASE,
      paperOverride: paper([198, 198, 215]),
      vignOverride: [60, 55, 75], featureOverride: [40, 40, 60],
      cubicScale: 1.55, schlegelScale: 1.45,
      schlegelInnerR: 0.40, schlegelRot3D: 0.45,
      wavepackets: [W(0, 0, 0.085, 0.16)],   // single positive bulge at centre
      e8Origins: [], linkCount: 6,
      fields: {
        cubic:    F(0.60, 0.70, 0.50, 0.40, 0.60, 1.1),
        schlegel: F(0.62, 0.72, 0.55, 0.35, 0.78, 2.0),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0, 0, 0, 0.5, 0),
        links:    F(0.05, 0.12, 0.85, 0.50, 0.92, 2.2),
      },
    },
  },
  {
    name: '02_two-wavepackets-interference',
    label: 'Two wavepackets · interference bulges between them',
    overrides: {
      ...BASE,
      paperOverride: paper([180, 175, 195]),
      vignOverride: [55, 50, 70], featureOverride: [40, 40, 55],
      cubicScale: 1.60, schlegelScale: 1.30,
      schlegelInnerR: 0.42, schlegelRot3D: 0.55,
      wavepackets: [W(-0.32, 0, 0.075, 0.15), W(0.32, 0, 0.075, 0.15)],
      e8Origins: [], linkCount: 8,
      fields: {
        cubic:    F(0.55, 0.68, 0.50, 0.40, 0.62, 1.1),
        schlegel: F(0.60, 0.74, 0.55, 0.35, 0.75, 1.8),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0, 0, 0, 0.5, 0),
        links:    F(0.10, 0.04, 0.90, 0.55, 0.95, 2.4),
      },
    },
  },
  {
    name: '03_wavepacket-dimple',
    label: 'Wavepacket dimple · inward pull (negative amplitude)',
    overrides: {
      ...BASE,
      paperOverride: paper([175, 170, 160]),
      vignOverride: [60, 55, 45], featureOverride: [50, 45, 35],
      cubicScale: 1.55, schlegelScale: 1.30,
      schlegelInnerR: 0.38, schlegelRot3D: 0.50,
      wavepackets: [W(0, 0, -0.075, 0.18)],   // negative = pull vertices INWARD
      e8Origins: [{ x: 0, y: 0, scale: 0.32 }],
      linkCount: 8,
      fields: {
        cubic:    F(0.05, 0.13, 0.55, 0.38, 0.60, 1.1),
        schlegel: F(0.06, 0.14, 0.55, 0.35, 0.72, 1.8),
        e8:       F(0.08, 0.18, 0.85, 0.55, 0.92, 2.0),
        ripple:   F(0, 0, 0, 0.5, 0),
        links:    F(0.50, 0.10, 0.95, 0.55, 0.95, 2.4),
      },
    },
  },
  {
    name: '04_ripples-single-source',
    label: 'Single ripple source · concentric wavefronts expanding from origin',
    overrides: {
      ...BASE,
      paperOverride: paper([170, 175, 190]),
      vignOverride: [50, 55, 70], featureOverride: [40, 45, 60],
      cubicScale: 1.55, schlegelScale: 1.25,
      schlegelInnerR: 0.40, schlegelRot3D: 0.45,
      ripples: [R(0, 0, 7, 0.06, 0.10)],
      e8Origins: [], linkCount: 8,
      fields: {
        cubic:    F(0.55, 0.62, 0.40, 0.42, 0.45, 0.9),
        schlegel: F(0.55, 0.68, 0.45, 0.38, 0.65, 1.6),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.08, 0.18, 0.85, 0.55, 0.90, 2.4),   // hot amber rings
        links:    F(0.05, 0.13, 0.90, 0.55, 0.92, 2.2),
      },
    },
  },
  {
    name: '05_two-ripple-sources-interfering',
    label: 'Two ripple sources interfering · double-slit feel',
    overrides: {
      ...BASE,
      paperOverride: paper([170, 175, 190]),
      vignOverride: [50, 55, 70], featureOverride: [40, 45, 60],
      cubicScale: 1.55, schlegelScale: 1.25,
      ripples: [R(-0.30, 0, 6, 0.05, 0.09), R(0.30, 0, 6, 0.05, 0.09)],
      e8Origins: [], linkCount: 8,
      fields: {
        cubic:    F(0.55, 0.62, 0.40, 0.42, 0.45, 0.9),
        schlegel: F(0.55, 0.68, 0.45, 0.38, 0.60, 1.4),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.50, 0.62, 0.85, 0.50, 0.88, 2.4),   // cyan rings
        links:    F(0.05, 0.13, 0.90, 0.55, 0.92, 2.2),
      },
    },
  },
  {
    name: '06_schrodinger-atom',
    label: 'Schrödinger atom · wavepacket + ripples at the SAME centre',
    overrides: {
      ...BASE,
      paperOverride: paper([180, 175, 165]),
      vignOverride: [60, 55, 45], featureOverride: [55, 45, 35],
      cubicScale: 1.55, schlegelScale: 1.40,
      schlegelInnerR: 0.38, schlegelRot3D: 0.50,
      wavepackets: [W(0, 0, 0.080, 0.18)],
      ripples: [R(0, 0, 5, 0.18, 0.12)],     // ripples start at larger r0 (outside the wavepacket)
      e8Origins: [], linkCount: 10,
      fields: {
        cubic:    F(0.06, 0.14, 0.55, 0.40, 0.55, 1.0),
        schlegel: F(0.08, 0.18, 0.60, 0.36, 0.75, 1.8),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.10, 0.04, 0.95, 0.55, 0.92, 2.6),
        links:    F(0.95, 0.10, 0.95, 0.55, 0.95, 2.4),
      },
    },
  },
  {
    name: '07_dense-cubic-with-wavepacket',
    label: 'Dense cubic + wavepacket · more grid lines show the distortion',
    overrides: {
      ...BASE,
      paperOverride: paper([185, 180, 200]),
      vignOverride: [50, 50, 70], featureOverride: [40, 40, 55],
      cubicN: 2,
      cubicScale: 1.50, schlegelScale: 0.95,
      wavepackets: [W(0.20, -0.10, 0.090, 0.18)],
      e8Origins: [], linkCount: 7,
      fields: {
        cubic:    F(0.50, 0.72, 0.55, 0.42, 0.50, 0.8),   // dense + thin
        schlegel: F(0.60, 0.78, 0.50, 0.38, 0.60, 1.6),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0, 0, 0, 0.5, 0),
        links:    F(0.06, 0.14, 0.90, 0.55, 0.92, 2.2),
      },
    },
  },
  {
    name: '08_dense-cubic-with-ripples',
    label: 'Dense cubic backdrop · ripples expanding through it',
    overrides: {
      ...BASE,
      paperOverride: paper([195, 180, 165]),
      vignOverride: [70, 55, 40], featureOverride: [55, 45, 30],
      cubicN: 2,
      cubicScale: 1.50, schlegelScale: 0.95,
      ripples: [R(0, 0, 8, 0.07, 0.085)],
      e8Origins: [], linkCount: 8,
      fields: {
        cubic:    F(0.06, 0.16, 0.50, 0.40, 0.48, 0.8),
        schlegel: F(0.06, 0.14, 0.45, 0.38, 0.55, 1.4),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.06, 0.18, 0.95, 0.50, 0.92, 2.6),
        links:    F(0.95, 0.10, 0.92, 0.55, 0.92, 2.4),
      },
    },
  },
  {
    name: '09_multi-particles-with-ripples-and-nautilus',
    label: 'Multiple wavepackets + ripples + nautilus chain · fully tangled',
    overrides: {
      ...BASE,
      paperOverride: paper([175, 170, 175]),
      vignOverride: [55, 50, 60], featureOverride: [45, 40, 50],
      cubicScale: 1.55, schlegelScale: 1.50,
      schlegelInnerR: 0.40, schlegelRot3D: 0.50,
      wavepackets: [W(-0.30, -0.30, 0.060, 0.14), W(0.30, 0.30, 0.060, 0.14)],
      ripples: [R(-0.30, -0.30, 4, 0.08, 0.08), R(0.30, 0.30, 4, 0.08, 0.08)],
      e8Origins: [{ x: 0, y: 0, scale: 0.35 }],
      linkCount: 12,
      fields: {
        cubic:    F(0.55, 0.85, 0.50, 0.40, 0.52, 0.9),
        schlegel: F(0.60, 0.85, 0.55, 0.36, 0.72, 1.6),
        e8:       F(0.05, 0.15, 0.85, 0.55, 0.90, 2.0),
        ripple:   F(0.50, 0.80, 0.90, 0.50, 0.90, 2.2),
        links:    F(0.95, 0.08, 0.95, 0.55, 0.95, 2.4),
      },
    },
  },
  {
    name: '10_ripple-field-dominant',
    label: 'Ripple field dominant · five concentric expansions across the canvas',
    overrides: {
      ...BASE,
      paperOverride: paper([165, 165, 180]),
      vignOverride: [50, 50, 60], featureOverride: [40, 40, 55],
      cubicScale: 1.45, schlegelScale: 0,
      ripples: [
        R(-0.45, -0.45, 4, 0.05, 0.08),
        R( 0.45, -0.45, 4, 0.05, 0.08),
        R(-0.45,  0.45, 4, 0.05, 0.08),
        R( 0.45,  0.45, 4, 0.05, 0.08),
        R( 0.00,  0.00, 6, 0.06, 0.10),
      ],
      e8Origins: [], linkCount: 10,
      fields: {
        cubic:    F(0.50, 0.62, 0.40, 0.42, 0.40, 0.8),
        schlegel: F(0, 0, 0, 0.5, 0),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.55, 0.85, 0.85, 0.50, 0.85, 2.0),    // cool spectrum rings
        links:    F(0.50, 0.85, 0.95, 0.55, 0.92, 2.2),
      },
    },
  },
  {
    name: '11_wavepacket-at-edge-cubic-bleed',
    label: 'Wavepacket near edge · cubic bleeding · particle entering/leaving frame',
    overrides: {
      ...BASE,
      paperOverride: paper([185, 175, 155]),
      vignOverride: [70, 55, 35], featureOverride: [60, 45, 25],
      cubicScale: 1.80, schlegelScale: 1.30,
      schlegelInnerR: 0.40, schlegelRot3D: 0.55,
      wavepackets: [W(0.55, -0.25, 0.100, 0.20)],
      ripples: [R(0.55, -0.25, 5, 0.05, 0.10)],
      e8Origins: [], linkCount: 9,
      fields: {
        cubic:    F(0.06, 0.14, 0.55, 0.38, 0.55, 1.0),
        schlegel: F(0.04, 0.13, 0.60, 0.34, 0.78, 1.8),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.10, 0.04, 0.95, 0.55, 0.92, 2.4),
        links:    F(0.50, 0.10, 0.95, 0.55, 0.95, 2.6),
      },
    },
  },
  {
    name: '12_asymmetric-perturbed-field',
    label: 'Asymmetric · wavepacket off-centre · everything biased',
    overrides: {
      ...BASE,
      paperOverride: paper([170, 175, 195]),
      vignOverride: [50, 55, 70], featureOverride: [40, 45, 60],
      cubicScale: 1.70, cubicOriginX: -0.10,
      schlegelScale: 1.75, schlegelOriginX: -0.20,
      schlegelInnerR: 0.42, schlegelRot3D: 0.40,
      wavepackets: [W(-0.30, -0.20, 0.075, 0.16)],
      ripples: [R(0.35, 0.30, 5, 0.05, 0.10)],
      e8Origins: [{ x: 0.20, y: 0.45, scale: 0.32 }],
      linkCount: 12,
      fields: {
        cubic:    F(0.55, 0.68, 0.45, 0.40, 0.50, 1.0),
        schlegel: F(0.55, 0.70, 0.55, 0.36, 0.72, 1.8),
        e8:       F(0.05, 0.16, 0.85, 0.55, 0.92, 2.0),
        ripple:   F(0.50, 0.10, 0.95, 0.55, 0.90, 2.4),
        links:    F(0.95, 0.10, 0.95, 0.55, 0.95, 2.6),
      },
    },
  },
  {
    name: '13_diatomic-two-particles-linked',
    label: 'Diatomic · two wavepackets + ripples · molecular feel',
    overrides: {
      ...BASE,
      paperOverride: paper([185, 175, 175]),
      vignOverride: [60, 50, 55], featureOverride: [45, 40, 45],
      cubicScale: 1.60, schlegelScale: 1.30,
      schlegelInnerR: 0.40, schlegelRot3D: 0.55,
      wavepackets: [W(-0.25, 0, 0.075, 0.15), W(0.25, 0, 0.075, 0.15)],
      ripples: [R(-0.25, 0, 4, 0.05, 0.08), R(0.25, 0, 4, 0.05, 0.08)],
      e8Origins: [],
      linkCount: 14,                                       // dense bond-like links
      fields: {
        cubic:    F(0.85, 0.05, 0.50, 0.42, 0.52, 1.0),
        schlegel: F(0.88, 0.05, 0.55, 0.38, 0.72, 1.6),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.92, 0.06, 0.90, 0.50, 0.90, 2.2),
        links:    F(0.05, 0.16, 0.95, 0.55, 0.95, 2.6),
      },
    },
  },
  {
    name: '14_field-cascade',
    label: 'Field cascade · ripples at varied scales · ladder of disturbances',
    overrides: {
      ...BASE,
      paperOverride: paper([175, 165, 145]),
      vignOverride: [65, 50, 30], featureOverride: [55, 45, 30],
      cubicScale: 1.55, schlegelScale: 1.30,
      schlegelInnerR: 0.40, schlegelRot3D: 0.50,
      ripples: [
        R(-0.50,  0.35, 3, 0.04, 0.05),                  // small tight ripples
        R(-0.10,  0.05, 5, 0.06, 0.08),                  // medium
        R( 0.40, -0.30, 7, 0.08, 0.12),                  // large widely spaced
      ],
      e8Origins: [{ x: 0.40, y: 0.35, scale: 0.28 }],
      linkCount: 11,
      fields: {
        cubic:    F(0.06, 0.14, 0.50, 0.40, 0.50, 1.0),
        schlegel: F(0.05, 0.13, 0.55, 0.36, 0.70, 1.6),
        e8:       F(0.10, 0.18, 0.85, 0.55, 0.92, 2.0),
        ripple:   F(0.10, 0.04, 0.95, 0.55, 0.92, 2.4),
        links:    F(0.95, 0.06, 0.95, 0.55, 0.95, 2.6),
      },
    },
  },
  {
    name: '15_quiet-single-ripple',
    label: 'Quiet counter-example · single small ripple · contemplative',
    overrides: {
      ...BASE,
      paperOverride: paper([190, 185, 178]),
      vignOverride: [55, 50, 45], featureOverride: [50, 45, 40],
      cubicScale: 1.40, schlegelScale: 1.20,
      schlegelInnerR: 0.40, schlegelRot3D: 0.45,
      ripples: [R(0, 0, 4, 0.08, 0.10)],
      e8Origins: [], linkCount: 4,                         // few links
      fields: {
        cubic:    F(0.60, 0.68, 0.30, 0.42, 0.38, 0.8),
        schlegel: F(0.62, 0.70, 0.40, 0.40, 0.55, 1.2),
        e8:       F(0, 0, 0, 0.5, 0),
        ripple:   F(0.08, 0.14, 0.70, 0.50, 0.82, 1.8),
        links:    F(0.06, 0.14, 0.75, 0.50, 0.80, 1.6),
      },
    },
  },
];

const base = paramsFromSeed(BASE_SEED);
for (const v of variations) {
  const params = { ...base, ...v.overrides };
  if (v.overrides.fields) params.fields = v.overrides.fields;
  const svg = renderQFTSVG(generateQFTScene(params), params, SIZE);
  const path = `${OUT_DIR}/${v.name}.svg`;
  writeFileSync(path, svg);
  console.log(`ok ${v.name}`);
}
console.log(`\nrendered ${variations.length} variations → ${OUT_DIR}/`);