{
  "asset": "bayeux-gallery.glb",
  "sha256": "672d699ab6db12d76edccdafc78a1463b6e4718262419167f464510386191068",
  "bytes": 124920,
  "sourceBlend": "../output/bayeux-display-study.blend",
  "sourceBlendSha256": "94b805aa426ce3979b0c2d7c2a25f91a65cbf5b9863218674efdda6386ea0657",
  "sourceSoftware": "4.5.13 LTS",
  "status": "Conceptual installation based on the approved Blender study, not a surveyed British Museum reconstruction.",
  "included": [
    "pale floor and walls",
    "benches",
    "case base and support",
    "dark frames",
    "minimal glazing"
  ],
  "excluded": [
    "all embroidery planes",
    "all source textures",
    "camera",
    "lights",
    "caption and title text"
  ],
  "originalMeshCount": 131,
  "exportedMeshGroups": [
    {
      "node": "Gallery / Pale limestone floor",
      "material": "Pale limestone floor",
      "triangles": 552
    },
    {
      "node": "Gallery / Floor joint",
      "material": "Floor joint",
      "triangles": 300
    },
    {
      "node": "Gallery / Warm chalk plaster",
      "material": "Warm chalk plaster",
      "triangles": 576
    },
    {
      "node": "Gallery / Charcoal case base",
      "material": "Charcoal case base",
      "triangles": 108
    },
    {
      "node": "Gallery / Dark anodised frame",
      "material": "Dark anodised frame",
      "triangles": 816
    },
    {
      "node": "Gallery / Conservation support",
      "material": "Conservation support",
      "triangles": 12
    },
    {
      "node": "Gallery / Gallery / minimal glazing",
      "material": "Gallery / minimal glazing",
      "triangles": 264
    }
  ],
  "coordinateSystem": {
    "units": "metres",
    "blender": "right-handed, Z up",
    "gltf": "right-handed, Y up",
    "blenderToGltf": "[x, y, z] -> [x, z, -y]"
  },
  "textileRectangle": {
    "sourcePixels": [
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      5550
    ],
    "lengthMeters": 70,
    "depthMeters": 0.8058560950516079,
    "surfaceHeightMeters": 0.981,
    "note": "Uniformly scaled complete scan including backing margins; depth is not the historic textile width.",
    "gltfTopLeft": [
      -35,
      0.981,
      -0.40292804752580397
    ],
    "gltfTopRight": [
      35,
      0.981,
      -0.40292804752580397
    ],
    "gltfBottomLeft": [
      -35,
      0.981,
      0.40292804752580397
    ],
    "gltfBottomRight": [
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    ],
    "gltfNormal": [
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      1,
      0
    ],
    "imageToGltf": "For image u,v in [0,1], with v=0 at the image top: [70*(u-0.5), 0.981, depthMeters*(v-0.5)].",
    "gltfToImage": "u=x/70+0.5; v=z/depthMeters+0.5.",
    "topDownCameraUp": [
      0,
      0,
      -1
    ],
    "supportTopHeightMeters": 0.979
  },
  "browserMaterials": {
    "glazingMaterial": "Gallery / minimal glazing",
    "glazingAlpha": 0.045,
    "suggestedGlazingDepthWrite": false,
    "lighting": "No lights exported. Root supplies browser lighting and photographic textile material.",
    "texturePolicy": "No textures or UV attributes exported; actual imagery comes from the existing verified DZI service."
  },
  "provenance": {
    "approvedStudy": "../README.md",
    "exhibitionDesignerReference": "https://opera-amsterdam.nl/2026-british-museum-bayeux-tapestry",
    "museumExhibition": "https://www.britishmuseum.org/exhibitions/bayeux-tapestry"
  }
}