{
  "id": "city-gravity-roller-conveyor",
  "type": "model",
  "title": "重力式ローラーコンベヤ",
  "titleEn": "Gravity roller conveyor",
  "description": "荷さばき場・小さな倉庫で箱の搬送経路を示すローラーコンベヤ。少し傾いた固定ベッドに29本の個別ローラー、軸端、側部チャンネル、四脚・高さ調整足・斜め補強、低い側の荷止めと端部連結金具を造形。箱や隣接モジュールは含まず、一台として配置します。ローラー回転・荷物の移動や耐荷重検証はありません。 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。 外接寸法（X×Y×Z）2.166 × 0.829 × 0.714 m、28,916三角形。単位m・Y-up、水平中央の接地用原点、最下点Y=0。部品ごとの重複UV0と単色PBR材質を収録し、画像テクスチャ・UV2・コライダー・LOD・リグ・動作は付属しません。静的表示用でUnity/VRChat実機検証は未実施。STLはm・Y-up座標の形状のみで色・材質・UV・階層を含みません。",
  "descriptionEn": "A gravity-roller conveyor for parcel routes in loading areas and small warehouses. A slightly inclined fixed bed carries 29 separate rollers and axle ends, side channels, four legs with adjustable-looking feet, diagonal bracing, low-end stop and joining tabs. Boxes and neighboring modules are absent; place it as one complete machine. Roller rotation, parcel movement and load-rating validation are not provided. For games and visualization; not validated for manufacture, structural engineering or 3D printing. Bounding dimensions (X×Y×Z): 2.166 × 0.829 × 0.714 m; 28,916 triangles. Metres, Y-up, horizontally centered placement origin with minimum Y=0, not an articulation or wall-mount pivot. Includes overlapping component UV0 and constant-color PBR materials, with no image textures, unique UV2, colliders, LOD, rig or runtime behavior. Static visualization only; Unity/VRChat editor and runtime tests have not been performed. STL uses metre-valued Y-up coordinates and contains geometry only, without color, materials, UVs or hierarchy.",
  "category": "urban",
  "tags": [
    "city",
    "street",
    "original",
    "warehouse",
    "conveyor",
    "logistics",
    "ローラーコンベヤ"
  ],
  "author": "Xenoah",
  "license": "CC-BY-4.0",
  "version": "1.0.0",
  "status": "public",
  "created": "2026-10-14",
  "updated": "2026-10-14",
  "thumbnail": "https://raw.githubusercontent.com/Xenoah/meshcopia/af80e678a81d7d5249bdce8b302efdb78fbdf4e1/content/assets/city-gravity-roller-conveyor/preview.png",
  "preview": "city-gravity-roller-conveyor.glb",
  "unit": "m",
  "upAxis": "Y",
  "triangles": 28916,
  "dimensions": [
    2.166,
    0.828555,
    0.714
  ],
  "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 original city expansion 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_expansion/frozen/batch-039/scripts/city_expansion/logistics_handling_equipment.py",
    "sourceSha256": "26ff5b00345c5f42ad772ec66f9562e897a16c33add5ed026caff7b30f2d1f01",
    "sourceRecipeSha256": "c3581e364fedcedf1c47f66d9ab4f3108e32319555619ac64cc78151e067f3f0",
    "sourceHelpersSha256": "99ea76b4c3073b3ec2cfdf732e987c7977bfe5efc986b4a077df8db35a6f9d15",
    "alternateFormat": "STL triangulated from the exact reimported GLB, metre-valued Y-up coordinates. No printability or manufacture validation.",
    "stlSha256": "ce372593d80dd78ee9143c3e3e2add6c61e1ec966a610f56d63943317b8c2b24"
  },
  "usages": [
    {
      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
      "sourcePaths": [
        "scripts/city_expansion/frozen/batch-039/scripts/city_expansion/logistics_handling_equipment.py",
        "scripts/city_expansion/frozen/batch-039/scripts/city_expansion/common.py"
      ],
      "selectors": [
        "city-gravity-roller-conveyor"
      ],
      "context": "Original city asset created for this library. No external deployment or reuse claimed."
    }
  ],
  "pageUrl": "https://xenoah.github.io/meshcopia/assets/city-gravity-roller-conveyor/",
  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-gravity-roller-conveyor.json",
  "attribution": "Gravity roller conveyor by Xenoah / Meshcopia\nhttps://xenoah.github.io/meshcopia/assets/city-gravity-roller-conveyor/\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-gravity-roller-conveyor/source/city-gravity-roller-conveyor.glb"
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      "url": "https://raw.githubusercontent.com/Xenoah/meshcopia/af80e678a81d7d5249bdce8b302efdb78fbdf4e1/content/assets/city-gravity-roller-conveyor/source/city-gravity-roller-conveyor.stl"
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      "id": "city-gravity-roller-conveyor",
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      "packageVersion": "1.0.0",
      "contentPolicy": "fbx-required-textures-single-notice-v1",
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      "archive": {
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        "url": "https://github.com/Xenoah/meshcopia/releases/download/cohort-new251-v1.0.0/city-gravity-roller-conveyor-1.0.0-fbx-minimal-1.0.0.zip"
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      "files": [
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        "filename": "LICENSE.txt",
        "sha256": "8f0de405ac29078036dd032ce284f4766c68d880afa30492460b0599438c7d0a",
        "text": "Gravity roller conveyor 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-gravity-roller-conveyor/\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-gravity-roller-conveyor/source/city-gravity-roller-conveyor.glb"
}