{
  "id": "city-roof-exhaust-cowl",
  "type": "model",
  "title": "屋上換気ベンチレーター",
  "titleEn": "Mushroom roof exhaust cowl",
  "description": "中空の立上り管、丸い雨よけ、支持材、防鳥格子と屋根取付フランジを備えた屋上換気口。 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 mushroom roof exhaust with hollow riser, spun weather cap, cap supports, bird-guard strips and roof flashing flange. Static visual prop, not airflow-rated. For games and visualization; not validated for manufacture, structural engineering or 3D printing.",
  "category": "urban",
  "tags": [
    "city",
    "street",
    "original",
    "roof",
    "exhaust",
    "ventilator",
    "cowl",
    "industrial",
    "屋上換気"
  ],
  "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-roof-exhaust-cowl/thumbnail.png",
  "preview": "city-roof-exhaust-cowl.glb",
  "unit": "m",
  "upAxis": "Y",
  "triangles": 16564,
  "dimensions": [
    0.68,
    0.77,
    0.68
  ],
  "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/infrastructure_extra.py",
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    "stlSha256": "256fa6ef2b392b3820dfb435257a938d6973e8e053f4694a31a2ff99a636471d"
  },
  "usages": [
    {
      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
      "sourcePaths": [
        "scripts/city/infrastructure_extra.py",
        "scripts/city/common.py",
        "scripts/city/infrastructure.py"
      ],
      "selectors": [
        "city-roof-exhaust-cowl"
      ],
      "context": "Original city asset created for this library. No external deployment or reuse claimed."
    }
  ],
  "pageUrl": "https://xenoah.github.io/meshcopia/assets/city-roof-exhaust-cowl/",
  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-roof-exhaust-cowl.json",
  "attribution": "Mushroom roof exhaust cowl by Xenoah / Meshcopia\nhttps://xenoah.github.io/meshcopia/assets/city-roof-exhaust-cowl/\nCC BY 4.0 — https://creativecommons.org/licenses/by/4.0/\nChanges: none. If modified, replace this line with a description of your changes.",
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      "id": "city-roof-exhaust-cowl",
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      "packageVersion": "1.0.0",
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      },
      "files": [
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        "filename": "LICENSE.txt",
        "sha256": "3f652a46d568562635d0c83c27b7731a9553c126ce857723ee1f7efcf142b5e0",
        "text": "Mushroom roof exhaust cowl 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-roof-exhaust-cowl/\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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}