run 20260428T232736Z-dfc1

Summary

Prompt

Make a single solid consisting of a cube with a hemispherical dome fused onto its top face. Cube: 40mm × 40mm × 40mm, centered in X and Y with the bottom face on the XY plane (so it spans x in [-20, 20], y in [-20, 20], z in [0, 40]). Dome: a hemisphere of radius 15mm sitting on top of the cube, centered on the Z axis. The flat (circular) face of the hemisphere is flush with the top face of the cube at z = 40, and the dome extends upward from there. The two parts are joined into a single solid (their shared circular interface is internal, not a face). Note: the kernel only has a full Sphere primitive — to get a hemisphere you must boolean a sphere with a half-space (e.g. intersect a sphere with a large cube positioned at z ≥ 40).

Checks

params: {
  "type": "valid_solid"
}

details: {
  "error": "parse: Invalid JSON vcad file: invalid value: expected key to be a number in quotes at line 4 column 5",
  "reason": "fatal evaluation error"
}

params: {
  "type": "bbox",
  "min": [
    -20,
    -20,
    0
  ],
  "max": [
    20,
    20,
    55
  ],
  "tolerance_mm": 0.2
}

details: {
  "reason": "no valid solid to measure"
}

params: {
  "type": "mass_props",
  "volume_mm3": 71068.58,
  "tolerance_pct": 2
}

details: {
  "reason": "no valid solid to measure"
}

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 2
}

details: {
  "reason": "no valid solid to round-trip"
}

Tool calls

{
  "model": "claude-haiku-4-5-20251001",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 808
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "cube": {
      "id": "cube",
      "name": "Main cube",
      "op": {
        "type": "Cube",
        "size": {"x": 40, "y": 40, "z": 40}
      }
    },
    "cube_translated": {
      "id": "cube_translated",
      "name": "Cube centered in XY",
      "op": {
        "type": "Translate",
        "child": "cube",
        "offset": {"x": -20, "y": -20, "z": 0}
      }
    },
    "sphere": {
      "id": "sphere",
      "name": "Full sphere for dome",
      "op": {
        "type": "Sphere",
        "radius": 15,
        "segments": 32
      }
    },
    "sphere_translated": {
      "id": "sphere_translated",
      "name": "Sphere centered at top of cube",
      "op": {
        "type": "Translate",
        "child": "sphere",
        "offset": {"x": 0, "y": 0, "z": 40}
      }
    },
    "half_space": {
      "id": "half_space",
      "name": "Half-space to clip sphere",
      "op": {
        "type": "Cube",
        "size": {"x": 100, "y": 100, "z": 50}
      }
    },
    "half_space_translated": {
      "id": "half_space_translated",
      "name": "Half-space positioned at z=40",
      "op": {
        "type": "Translate",
        "child": "half_space",
        "offset": {"x": -50, "y": -50, "z": 40}
      }
    },
    "hemisphere": {
      "id": "hemisphere",
      "name": "Hemisphere (sphere intersected with half-space)",
      "op": {
        "type": "Intersection",
        "left": "sphere_translated",
        "right": "half_space_translated"
      }
    },
    "dome_block": {
      "id": "dome_block",
      "name": "Cube with hemispherical dome",
      "op": {
        "type": "Union",
        "left": "cube_translated",
        "right": "hemisphere"
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": "dome_block",
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:55.940Z · static site, regenerate with npm run build -w @mecheval/leaderboard