Neutral hierarchy authoring

Assembled Model Lab

The starter truck is editable: select a part, use the gizmo or controls, then apply JSON without redeploying.

Model

NameStable ID

Parts

Selected part

NameParent

PivotXYZ

ShapeMaterial

Shape offsetXYZ

Shape sizeXYZ

Decal zones

ZoneDecal

Hopper side · left → hopper / front

PositionUV

ScaleUV

Portable JSON

{
  "schemaVersion": 1,
  "model": {
    "schemaVersion": 1,
    "kind": "assembled-model",
    "id": "minimal-side-loader-truck",
    "name": "Minimal side-loader garbage truck",
    "materials": {
      "body": {
        "color": "#2f9e67",
        "roughness": 0.62,
        "metalness": 0.08
      },
      "cab": {
        "color": "#ecf3e5",
        "roughness": 0.42,
        "metalness": 0.14
      },
      "tire": {
        "color": "#20282d",
        "roughness": 0.92,
        "metalness": 0
      },
      "glass": {
        "color": "#78b8d5",
        "roughness": 0.18,
        "metalness": 0.06
      },
      "steel": {
        "color": "#98a5a5",
        "roughness": 0.38,
        "metalness": 0.66
      },
      "lamp": {
        "color": "#f3bb45",
        "roughness": 0.28,
        "metalness": 0.12
      }
    },
    "nodes": [
      {
        "id": "vehicle-root",
        "name": "Vehicle root",
        "translation": [
          0,
          0,
          0
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "joint": {
          "kind": "fixed"
        }
      },
      {
        "id": "chassis",
        "name": "Chassis",
        "parentId": "vehicle-root",
        "translation": [
          0,
          0,
          0.72
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "box",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            3.25,
            1.28,
            0.38
          ],
          "materialId": "steel"
        },
        "joint": {
          "kind": "fixed"
        }
      },
      {
        "id": "cab",
        "name": "Cab",
        "parentId": "vehicle-root",
        "translation": [
          1.08,
          -0.03,
          1.52
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "box",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            1.15,
            1.22,
            1.22
          ],
          "materialId": "cab"
        },
        "joint": {
          "kind": "fixed"
        }
      },
      {
        "id": "windshield",
        "name": "Windshield",
        "parentId": "cab",
        "translation": [
          0.18,
          -0.615,
          0.18
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "box",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.62,
            0.035,
            0.57
          ],
          "materialId": "glass"
        },
        "joint": {
          "kind": "fixed"
        }
      },
      {
        "id": "hopper",
        "name": "Hopper body",
        "parentId": "vehicle-root",
        "translation": [
          -0.72,
          0,
          1.65
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "box",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            2.2,
            1.35,
            1.58
          ],
          "materialId": "body"
        },
        "joint": {
          "kind": "fixed"
        },
        "tags": [
          "trash-body"
        ]
      },
      {
        "id": "loader-pivot",
        "name": "Side-loader pivot",
        "parentId": "hopper",
        "translation": [
          -0.18,
          -0.83,
          0.14
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "joint": {
          "kind": "hinge",
          "axis": [
            1,
            0,
            0
          ]
        },
        "tags": [
          "bin-pickup"
        ]
      },
      {
        "id": "loader-arm",
        "name": "Side-loader arm",
        "parentId": "loader-pivot",
        "translation": [
          0,
          0,
          0
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "box",
          "offset": [
            -0.08,
            -0.62,
            0.38
          ],
          "rotation": [
            0,
            0.24,
            0
          ],
          "scale": [
            0.24,
            1.18,
            0.24
          ],
          "materialId": "steel"
        },
        "joint": {
          "kind": "hinge",
          "axis": [
            1,
            0,
            0
          ]
        }
      },
      {
        "id": "grabber",
        "name": "Bin grabber",
        "parentId": "loader-arm",
        "translation": [
          -0.08,
          -1.17,
          0.74
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "box",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.7,
            0.2,
            0.15
          ],
          "materialId": "steel"
        },
        "joint": {
          "kind": "fixed"
        }
      },
      {
        "id": "wheel-front-left",
        "name": "Front wheel left",
        "parentId": "vehicle-root",
        "translation": [
          1.04,
          -0.78,
          0.55
        ],
        "rotation": [
          0,
          1.5707963267948966,
          0
        ],
        "geometry": {
          "shape": "cylinder",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.49,
            0.23,
            0.49
          ],
          "materialId": "tire"
        },
        "joint": {
          "kind": "fixed"
        },
        "tags": [
          "wheel"
        ]
      },
      {
        "id": "wheel-front-right",
        "name": "Front wheel right",
        "parentId": "vehicle-root",
        "translation": [
          1.04,
          0.78,
          0.55
        ],
        "rotation": [
          0,
          1.5707963267948966,
          0
        ],
        "geometry": {
          "shape": "cylinder",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.49,
            0.23,
            0.49
          ],
          "materialId": "tire"
        },
        "joint": {
          "kind": "fixed"
        },
        "tags": [
          "wheel"
        ]
      },
      {
        "id": "wheel-rear-left",
        "name": "Rear wheel left",
        "parentId": "vehicle-root",
        "translation": [
          -1.05,
          -0.78,
          0.55
        ],
        "rotation": [
          0,
          1.5707963267948966,
          0
        ],
        "geometry": {
          "shape": "cylinder",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.54,
            0.24,
            0.54
          ],
          "materialId": "tire"
        },
        "joint": {
          "kind": "fixed"
        },
        "tags": [
          "wheel"
        ]
      },
      {
        "id": "wheel-rear-right",
        "name": "Rear wheel right",
        "parentId": "vehicle-root",
        "translation": [
          -1.05,
          0.78,
          0.55
        ],
        "rotation": [
          0,
          1.5707963267948966,
          0
        ],
        "geometry": {
          "shape": "cylinder",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.54,
            0.24,
            0.54
          ],
          "materialId": "tire"
        },
        "joint": {
          "kind": "fixed"
        },
        "tags": [
          "wheel"
        ]
      },
      {
        "id": "warning-light",
        "name": "Warning light",
        "parentId": "cab",
        "translation": [
          0,
          0,
          0.69
        ],
        "rotation": [
          0,
          0,
          0
        ],
        "geometry": {
          "shape": "cylinder",
          "offset": [
            0,
            0,
            0
          ],
          "rotation": [
            0,
            0,
            0
          ],
          "scale": [
            0.15,
            0.13,
            0.15
          ],
          "materialId": "lamp"
        },
        "joint": {
          "kind": "fixed"
        }
      }
    ],
    "surfaceZones": [
      {
        "id": "cab-door-left",
        "name": "Cab door · left",
        "nodeId": "cab",
        "face": "front"
      },
      {
        "id": "cab-door-right",
        "name": "Cab door · right",
        "nodeId": "cab",
        "face": "back"
      },
      {
        "id": "hopper-side-left",
        "name": "Hopper side · left",
        "nodeId": "hopper",
        "face": "front"
      },
      {
        "id": "hopper-side-right",
        "name": "Hopper side · right",
        "nodeId": "hopper",
        "face": "back"
      }
    ]
  },
  "placements": [
    {
      "schemaVersion": 1,
      "id": "truck-door-mark",
      "decalId": "block-m",
      "target": {
        "targetId": "minimal-side-loader-truck",
        "zoneId": "hopper-side-left",
        "mapping": "planar"
      },
      "transform": {
        "position": [
          0.5,
          0.5
        ],
        "scale": [
          0.72,
          0.72
        ],
        "rotation": 0,
        "mirrorX": false,
        "mirrorY": false
      },
      "visible": true,
      "opacity": 1
    }
  ]
}

Preparing the assembled-model worktable...