{
  "id": "city-boxing-heavy-bag-stand",
  "type": "model",
  "title": "自立フレーム付きサンドバッグ",
  "titleEn": "Freestanding boxing heavy-bag stand",
  "description": "トレーニング室のボクシング区画へ置く、自立スタンドと吊り下げ式サンドバッグの一式。丸めた袋本体と縫い目、四方向の金属チェーン、上部アイ金具、張り出しアームと補強材、連結した接地レール、重り風の積層プレートを造形。袋と重りはこの1点の部品です。揺動・打撃判定・調整はなく、運動器具としての荷重・安定性・安全性は未検証です。 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）1.580 × 2.602 × 1.440 m、32,088三角形。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 freestanding heavy-bag assembly for a boxing area in a training room. It has a rounded upholstered bag with seams, four linked suspension chains, upper eye fittings, cantilever arm/braces, connected floor rails and stacked ballast-looking plates. The bag and plates belong to one counted assembly. Swinging, hit detection and adjustment are absent; load capacity, stability and exercise-equipment safety are unvalidated. For games and visualization; not validated for manufacture, structural engineering or 3D printing. Bounding dimensions (X×Y×Z): 1.580 × 2.602 × 1.440 m; 32,088 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",
    "sports",
    "boxing",
    "heavy-bag",
    "サンドバッグ"
  ],
  "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-boxing-heavy-bag-stand/preview.png",
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  "unit": "m",
  "upAxis": "Y",
  "triangles": 32088,
  "dimensions": [
    1.58,
    2.6015,
    1.4405
  ],
  "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-044/scripts/city_expansion/public_gym_equipment.py",
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    "alternateFormat": "STL triangulated from the exact reimported GLB, metre-valued Y-up coordinates. No printability or manufacture validation.",
    "stlSha256": "8b5ae1773bf35c9945367bea82f9b1455933ee6425e94016dc9c83e087e20ecc"
  },
  "usages": [
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      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
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      ],
      "selectors": [
        "city-boxing-heavy-bag-stand"
      ],
      "context": "Original city asset created for this library. No external deployment or reuse claimed."
    }
  ],
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  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-boxing-heavy-bag-stand.json",
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}