{
  "id": "single-software-execution--cli--blender--task-05--ubuntu",
  "snapshot": "Blender-4.2.3",
  "instruction": "Proximity Vertex Group. `/home/user/Desktop/scene.blend` contains two mesh objects: - `Skin`: a 4x4 BU plane in XY centered at the origin, subdivided 40x40 (1681 verts, 1600 quads), flat at z=0, with no modifiers. - `Bone`: a UV sphere of radius 0.3 positioned at world (0, 0, 0.5) (sitting above the center of the Skin). Launch Blender by running `blender` from a terminal. For the steps below, use `/opt/blender/blender` for Blender command-line or background runs when working on `scene.blend`.\n\nAdd a Geometry Nodes modifier on `Skin` that computes, for every Skin vertex, the proximity (distance) to the `Bone` mesh surface, remaps it through a smoothstep falloff, and stores the result as a POINT-domain FLOAT attribute named `Influence` (this makes it recognized as a vertex group in the UI). Do NOT apply the modifier - it must remain on the stack so the `Influence` attribute is available on the evaluated mesh. Required node-tree behaviour: 1. An `Object Info` node reads `Bone`'s geometry (transform_space='RELATIVE' is convenient because Skin sits at the world origin, so Bone's geometry arrives in Skin's local/world frame). 2. A `Geometry Proximity` node (target_element='FACES') takes `Bone` geometry as Target; the Source Position defaults to Position, so the node outputs, per Skin vertex, the distance to the nearest Bone surface point. 3. A `Map Range` node with interpolation_type='SMOOTHSTEP' and clamp=True converts distance -> influence by mapping: - from_min = 0.3, to_min = 1.0 - from_max = 1.0, to_max = 0.0 so distance <= 0.3 gives Influence = 1.0, distance >= 1.0 gives Influence = 0.0, and in between gives a smooth fade. 4. A `Store Named Attribute` node with data_type='FLOAT', domain='POINT', Name='Influence' writes the remapped value onto the Skin geometry. 5. `Group Input` geometry flows into the attribute-store stage; `Group Output` receives the stored geometry. Save the result to `/home/user/Desktop/answer.blend` with the GN modifier still on `Skin` (unapplied). ## Requirements 1. Both `Skin` and `Bone` exist as mesh objects. 2. `Skin` carries at least one NODES modifier. 3. The evaluated mesh (via depsgraph) of `Skin` contains a POINT-domain FLOAT attribute named `Influence`. 4. All Influence values lie in [0, 1] (with small tolerance). 5. Every Skin vertex whose distance to the Bone surface is <= 0.3 BU has Influence >= 0.9. 6. Every Skin vertex whose distance to the Bone surface is > 1.0 BU has Influence <= 0.1.",
  "source": "https://docs.blender.org/manual/en/4.1/; https://docs.blender.org/api/4.1/; https://developer.blender.org/docs/release_notes/4.1/; https://www.loc.gov/preservation/digital/formats/fdd/fdd000507.shtml",
  "config": [
    {
      "type": "upload_file",
      "parameters": {
        "files": [
          {
            "local_path": "task-05/init_file/scene.blend",
            "path": "/home/user/Desktop/scene.blend"
          }
        ]
      }
    }
  ],
  "trajectory": "trajectories/",
  "related_apps": [
    "blender"
  ],
  "artifact_paths": [
    "/home/user/Desktop/answer.blend"
  ],
  "evaluator": {
    "postconfig": [
      {
        "type": "upload_file",
        "parameters": {
          "files": [
            {
              "local_path": "task-05/eval.py",
              "path": "/home/user/Desktop/eval.py"
            }
          ]
        }
      }
    ],
    "func": "exact_match",
    "result": {
      "type": "vm_command_line",
      "command": "python3 /home/user/Desktop/eval.py",
      "shell": "true"
    },
    "expected": {
      "type": "rule",
      "rules": {
        "expected": "True\n"
      }
    }
  },
  "proxy": false,
  "fixed_ip": false,
  "possibility_of_env_change": "low"
}