{
  "id": "city-tree-grate",
  "type": "model",
  "title": "二分割の街路樹グレーチング",
  "titleEn": "Two-piece tree grate",
  "description": "中央の樹幹開口、放射状スリット、同心円補強帯を備える二分割鋳鉄グレーチング。樹木は含みません。 ゲーム・可視化向け。製造・構造設計・3Dプリント用途は未検証。",
  "descriptionEn": "A two-piece cast-iron tree grate with central trunk opening, radial slots and concentric reinforcement; no tree included. For games and visualization; not validated for manufacture, structural engineering or 3D printing.",
  "category": "urban",
  "tags": [
    "city",
    "street",
    "original",
    "urban-structure",
    "access",
    "tree-grate"
  ],
  "author": "Xenoah",
  "license": "CC-BY-4.0",
  "version": "1.0.0",
  "status": "public",
  "created": "2026-10-14",
  "updated": "2026-10-14",
  "thumbnail": "https://xenoah.github.io/meshcopia/assets/city-tree-grate/thumbnail.png",
  "preview": "city-tree-grate.glb",
  "unit": "m",
  "upAxis": "Y",
  "triangles": 2960,
  "dimensions": [
    1.2,
    0.056,
    1.2
  ],
  "uv": "Per-component primitive or automatically unwrapped UVs. Overlapping between components; not a packed unique lightmap atlas. Solid-color PBR materials; no external textures. STL has no colors or UVs.",
  "provenance": {
    "method": "Original AI-agent-authored procedural city geometry",
    "tool": "Blender 4.3.2; Meshcopia city generator 1.0",
    "rights": "Original geometry and material design created for Xenoah Meshcopia under the owner request for CC-BY-4.0 publication. No third-party meshes, scans, brands, logos or font files.",
    "generatorUrl": "https://github.com/Xenoah/meshcopia/blob/main/scripts/city/access_structures.py",
    "sourceSha256": "63c1bba91e64f783d6debe53bc15c66c6b09ab300a801b93b9b7736d73a08f9b",
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  "usages": [
    {
      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
      "sourcePaths": [
        "scripts/city/access_structures.py",
        "scripts/city/common.py",
        "scripts/city/access.py",
        "scripts/city/access_extra.py"
      ],
      "selectors": [
        "city-tree-grate"
      ],
      "context": "Original city asset created for this library. No external deployment or reuse claimed."
    }
  ],
  "pageUrl": "https://xenoah.github.io/meshcopia/assets/city-tree-grate/",
  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-tree-grate.json",
  "attribution": "Two-piece tree grate by Xenoah / Meshcopia\nhttps://xenoah.github.io/meshcopia/assets/city-tree-grate/\nCC BY 4.0 — https://creativecommons.org/licenses/by/4.0/\nChanges: none. If modified, replace this line with a description of your changes.",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
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      "url": "https://xenoah.github.io/meshcopia/assets/city-tree-grate/source/city-tree-grate.stl"
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  ],
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      "schemaVersion": 1,
      "id": "city-tree-grate",
      "assetVersion": "1.0.0",
      "packageVersion": "1.0.0",
      "contentPolicy": "fbx-required-textures-single-notice-v1",
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      "notice": {
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        "filename": "LICENSE.txt",
        "sha256": "41abc18fa89ed596c24a17d393b3a81b9897d7b10476ca26cba7c1f59c274289",
        "text": "Two-piece tree grate by Xenoah / Meshcopia\nCopyright (c) 2026 Xenoah\nCC BY 4.0: https://creativecommons.org/licenses/by/4.0/\nSource: https://xenoah.github.io/meshcopia/assets/city-tree-grate/\nProvided as-is, without warranties (license Section 5).\nChanges: none.\nAdditional changes: Converted unchanged source GLB geometry to FBX, with documented compatible material/texture derivatives.\n"
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  "previewUrl": "https://xenoah.github.io/meshcopia/assets/city-tree-grate/source/city-tree-grate.glb"
}