{
  "saved_at_utc": "2026-06-20T08:56:52.059935+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "V12 Engine Cylinder Block",
      "description": "This is a V12 engine cylinder block, a critical component that houses the cylinders and provides structural support for the engine's internal components.",
      "material": "Aluminum Alloy"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "The front view clearly shows the arrangement of the cylinder bores, the central shaft, and the mounting holes, providing a comprehensive overview of the block's primary features."
      },
      {
        "type": "Top",
        "reason": "The top view reveals the V-shaped configuration of the cylinder banks and the central camshaft area, essential for understanding the engine's layout."
      },
      {
        "type": "Left",
        "reason": "The left view displays the side profile, including the cylinder bores and the external mounting surfaces, which are critical for assembly and alignment."
      },
      {
        "type": "Isometric",
        "reason": "The isometric view provides a 3D perspective, helping to visualize the overall geometry and spatial relationships between components."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          0.0,
          0.0,
          0.0
        ],
        "reason": "The section cut reveals the internal passages and the arrangement of the cylinder bores, which are not visible in the external views."
      }
    ],
    "detail_views": [
      {
        "reference": "B",
        "base_view": "Front",
        "anchor": [
          0.0,
          0.0,
          0.0
        ],
        "radius": 15,
        "reason": "This detail magnifies the cylinder bore and its surrounding structure, highlighting the precision required for manufacturing."
      }
    ],
    "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": "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": 100
          },
          "value_approx": 150,
          "placement": "below",
          "offset_index": 2,
          "tolerance": null
        }
      ],
      "Top": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 355,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "angle",
          "dim_type": "Angle",
          "match_strategy": "nearest_angle_edges",
          "value_approx": 60,
          "placement": "above",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Left": [
        {
          "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
        }
      ],
      "Isometric": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 355,
          "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
        }
      ],
      "Section A-A": [
        {
          "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": 100,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Detail B": [
        {
          "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": "radius",
          "dim_type": "Radius",
          "match_strategy": "nearest_arc",
          "value_approx": 5,
          "placement": "leader",
          "offset_index": 1,
          "tolerance": null
        }
      ]
    }
  }
}