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"id": "single-software-execution--cli--blender--task-11--ubuntu",
"snapshot": "Blender-4.2.3",
"instruction": "IK Chain + Driver Rigger `/home/user/Desktop/scene.blend` is an empty Blender scene (just the default camera + light) — no armature, no empty named `IK_Target`. build a small rigging setup and save the result as `/home/user/Desktop/answer.blend`. ## Requirements 1. Launch Blender by running `blender` from a terminal. On this machine, use `/opt/blender/blender` for Blender command-line or background runs when working on `scene.blend`.\n\nAn armature object named `Rig` containing a 3-bone chain aligned along +Y: - `BoneA`: head (0,0,0), tail (0,1,0) - `BoneB`: head (0,1,0), tail (0,2,0), parented to `BoneA` (use_connect=True) - `BoneC`: head (0,2,0), tail (0,3,0), parented to `BoneB` (use_connect=True) `BoneC` is the tip of the chain. `rig.data.bones` must contain exactly these three. 2. An `EMPTY` object named `IK_Target` located at world position (0, 3, 0), placed approximately at the tip of the chain. 3. On pose bone `BoneC`, an IK constraint (`type='IK'`) with: - `target = IK_Target` (the empty object). - `chain_count = 3` (so the whole chain is solved). 4. On pose bone `BoneB`, a `COPY_LOCATION` constraint targeting `IK_Target`, with a Python `SCRIPTED` driver on its `.influence` property: - The driver's expression is non-empty and references a variable that reads `IK_Target.location.x` (e.g. `max(0, min(1, x))` with a variable named `x`). - The variable must be a SINGLE_PROP targeting the `IK_Target` object with a data path containing `location` (e.g. `location.x`). ## Requirements 1. The file `/home/user/Desktop/answer.blend` opens as a valid Blender file. 2. Object `Rig` exists and is an ARMATURE with exactly 3 bones whose names are `BoneA`, `BoneB`, `BoneC`. 3. Object `IK_Target` exists and has `type == 'EMPTY'`. 4. Pose bone `BoneC` has at least one constraint of type `IK` with `chain_count == 3` and a target set to either `IK_Target`, or to `Rig` with a non-empty `subtarget`. 5. Pose bone `BoneB` carries at least one constraint whose `influence` property is controlled by a driver. 6. That driver is `SCRIPTED`, has a non-empty `expression`, and has at least one variable whose target id is `IK_Target` and whose `data_path` contains `location`.",
"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-11/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-11/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"
}
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