{
  "saved_at_utc": "2026-06-27T17:07:25.295986+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "Pipe Shaft",
      "description": "A cylindrical pipe shaft with threaded ends, designed to transmit rotational motion or support loads in a mechanical system.",
      "material": "Steel"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "The Front view clearly shows the overall length and the threaded ends, which are critical for assembly and alignment."
      },
      {
        "type": "Top",
        "reason": "The Top view provides a clear view of the circular cross-section and confirms the diameter of the shaft."
      },
      {
        "type": "Isometric",
        "reason": "The Isometric view offers a 3D perspective, helping to visualize the shaft's geometry and the relationship between the main body and the threaded ends."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          0.0,
          0.0,
          0.0
        ],
        "reason": "The section reveals the internal bore and wall thickness of the shaft, which are essential for manufacturing and structural analysis."
      }
    ],
    "detail_views": [
      {
        "reference": "B",
        "base_view": "Front",
        "anchor": [
          966.81,
          0.0,
          0.0
        ],
        "radius": 10,
        "reason": "The detail view magnifies the threaded end to show the thread profile and pitch, which are critical for mating with other components."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 1933.6,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            0.0
          ],
          "value_approx": 53.7,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Top": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            0.0
          ],
          "value_approx": 53.7,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Section A-A": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            0.0
          ],
          "value_approx": 53.7,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            0.0,
            0.0,
            0.0
          ],
          "value_approx": 26.86,
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Detail B": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            966.81,
            0.0,
            0.0
          ],
          "value_approx": 53.7,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 50,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        }
      ]
    }
  }
}