{
  "saved_at_utc": "2026-06-22T14:25:58.638170+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "Wheel Hub Assembly ZF",
      "description": "This is a wheel hub assembly designed by ZF Germany, integrating braking and drivetrain components into a compact unit for vehicle applications.",
      "material": "Steel, Aluminum"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "The front view clearly shows the circular arrangement of the brake disc, hub, and internal components, providing a primary reference for overall diameter and alignment of the hub."
      },
      {
        "type": "Top",
        "reason": "The top view reveals the vertical shaft, the side-mounted cylinder, and the overall height and length of the assembly, essential for understanding the spatial layout."
      },
      {
        "type": "Left",
        "reason": "The left view provides a side profile showing the depth of the assembly, the shaft length, and the relative positioning of the internal mechanisms, which are not visible in the front or top views."
      },
      {
        "type": "Isometric",
        "reason": "The isometric view offers a 3D perspective that helps visualize the entire assembly's geometry and component relationships, aiding in assembly and inspection."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          0.0,
          0.0,
          0.0
        ],
        "reason": "A vertical section along the YZ plane reveals internal bore diameters, wall thicknesses, and the arrangement of internal gears and bearings, which are not visible in external views."
      }
    ],
    "detail_views": [
      {
        "reference": "C",
        "base_view": "Front",
        "anchor": [
          0.0,
          0.0,
          0.0
        ],
        "radius": 20,
        "reason": "This detail magnifies the bolt pattern around the central hub, which is critical for mounting and alignment, and is too small to be clearly seen in the main front view."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 500,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 100,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 150,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              0,
              0,
              0
            ],
            "radius_approx": 100
          },
          "circle_b": {
            "location_3d": [
              0,
              0,
              0
            ],
            "radius_approx": 150
          },
          "value_approx": 50,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Top": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 400,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 1000,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 50,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Left": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 600,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 500,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 80,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Section A-A": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 100,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 10,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 50,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        }
      ],
      "Detail C": [
        {
          "type": "bolt_pattern",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 100,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              0,
              0,
              0
            ],
            "radius_approx": 100
          },
          "circle_b": {
            "location_3d": [
              0,
              0,
              0
            ],
            "radius_approx": 150
          },
          "value_approx": 50,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        }
      ]
    }
  }
}