# Twelve-scenario examples

One source instance from each of the twelve scenario families is included. Seven examples have a paired, officially retained appearance-transfer video; the remaining five contain raw data only. No experimental gas transfers are included. These are illustrative examples, not the official benchmark split.

| Material | Scenario | Sample ID | Transfer |
| --- | --- | --- | --- |
| rigid | rigid-falling_objects | `falling_objects_0098` | Included |
| rigid | rigid-rolling_objects | `rolling_objects_0037` | Included |
| rigid | rigid-dominoes | `dominoes_0000` | Included |
| soft | soft-falling_objects_on_soft_pad | `falling_objects_on_soft_pad_0029` | Included |
| soft | soft-gravity_draping_flag | `gravity_draping_flag_0033` | Included |
| soft | soft-gravity_tightening_soft_rope | `gravity_tightening_soft_rope_0041` | Included |
| liquid | fluid-rigid_objects_in_water_tank | `rigid_objects_in_water_tank_0012` | Not available |
| liquid | fluid-draining_tank | `draining_tank_0010` | Included |
| liquid | fluid-u_connector | `u_connector_0012` | Not available |
| gas | gas-gas_smoke_stack | `gas_smoke_stack_0012` | Not available |
| gas | gas-impact_smoke_dispersion | `impact_smoke_dispersion_0012` | Not available |
| gas | gas-gas_flame_heating | `gas_flame_heating_0012` | Not available |

Each sample keeps `reference/render.mp4`, source scene JSON files, `reference/frames/`, and `reference/render_assets/`. When available, the paired appearance variant is stored under `transfer/` next to `reference/`, using its variant name (such as `appearance_00.mp4` or `black_disc.mp4`). Videos and annotations are copied without resizing or re-encoding. Existing source directory and filename conventions are preserved.

Solid/liquid examples contain RGB, ID-mask, depth, and normal frames as supplied by their source. Gas examples contain RGB and per-object opacity channels under `frames/mask/<object_id>/frame_XXXX.png`; consult `render_assets/pass_metadata.json` for encoding and object identities. These are not ordinary binary masks. Data presence does not certify compatibility with every evaluator mode; full rigid scoring still requires the evaluator's complete reference contract and reviewed actor semantics.

`manifest.json` records relative reference/transfer paths, the original transfer filename, frame-file counts, and video SHA-256 hashes. A paired transfer is an appearance variant of the same source instance, not a model prediction or a replacement for raw simulation annotations.

The [generation example manifest](../manifests/generation.examples.json) covers all twelve cases, using transfer frame 0 where available and raw frame 0 otherwise. Its prompts and seed 42 are demonstrations, not the official paper configuration. See [Usage](../README.md#usage) and the [generation protocol](../docs/generation.md).

Source scene files may retain environment-specific asset paths. Adapt those before rerendering. Source masks and meshes remain unchanged and should be interpreted with their accompanying metadata.

## Local directory layout

The current local example root is `data/`. A separate `example_data/` download uses the same internal layout.

```text
data/
├── manifest.json
├── rigid/
│   └── dominoes/
│       └── dominoes_0000/
│           ├── reference/
│           │   ├── render.mp4
│           │   ├── frames/
│           │   └── render_assets/
│           └── transfer/
│               └── appearance_00.mp4
├── soft/gravity_draping_flag/gravity_draping_flag_0033/
│   ├── reference/
│   └── transfer/black_disc.mp4
├── liquid/u_connector/u_connector_0012/reference/
└── gas/smoke_stack/gas_smoke_stack_0012/reference/
```

Directory names for gas are `smoke_stack`, `impact_smoke_dispersion`, and `flame_heating`; original source IDs retain their `gas_` prefixes where present. CLI identifiers remain `gas_smoke_stack`, `impact_smoke_dispersion`, and `gas_flame_heating`, as recorded in the manifest. Raw-only cases have no `transfer/` directory. All manifest paths are relative to this root.