Rextail film credits

The film on rextail.ai is rendered live in your browser from these assets.

--- film-assets/bang/LICENSES.md

# Chapter 2, "The first rule": asset licences

| File | What | Source | Licence |
|---|---|---|---|
| `bluenoise.png` | 64 × 64 blue-noise texture (three channels), used to dither the raymarched plasma | Christoph Peters, "Free blue noise textures", http://momentsingraphics.de/BlueNoise.html | CC0 1.0 (public domain dedication) |

Everything else in the shot (the fireball, recombination and the cosmic web) is procedural.

--- film-assets/cell/LICENSES.md

# Chapter 5, "The cell": asset licences

| File | What | Source | Licence |
|---|---|---|---|
| `crust.webp` | Photographic micro-detail for the vent chimneys, the rubble and the sea floor (normal XY, height and luminance packed), from the scanned texture `dark_rock` | https://polyhaven.com/a/dark_rock | CC0 1.0 (https://polyhaven.com/license) |

The vent's form (spires, flanges, rubble, pillow-basalt floor), the plume, the water, the cell, its envelope, cytoplasm, DNA, pili and flagellum, and the microbes round it are procedural.

--- film-assets/desk/LICENSE-Rocketbox-MIT.txt

MIT License

Copyright (c) 2020 Microsoft

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

--- film-assets/desk/LICENSES.md

# Chapter 9, "The desk": asset licences

| File | What | Source | Licence |
|---|---|---|---|
| `clerk.glb` | The clerk: Microsoft Rocketbox avatar `Business_Male_04` (subdivided, ARKit and viseme morphs kept), with its `m_sit_table_breathe_01` mocap retargeted and a writing pose (IK/FK) and dip pen added; his hair is the hair cards and painted scalp of Rocketbox avatar `Male_Adult_08`, carried over by `tools/film/humans/hair.py` | https://github.com/microsoft/Microsoft-Rocketbox | MIT, Copyright (c) 2020 Microsoft. Notice: `LICENSE-Rocketbox-MIT.txt` (ships with the site's licence page). |
| `set.glb` | Desk (`wooden_table_02`, height ×0.923), `vintage_oil_lamp` (glass and flame repaired, ×0.72), `office_notepads` (period pieces only), `stationery_supplies` (pencils, cup), `round_spectacles` (lenses repaired), `vintage_pocket_watch`, `book_encyclopedia_set_01`, `vintage_wooden_drawer_01`, `mantel_clock_01`, `painted_wooden_chair_01`, `hanging_picture_frame_03`; room from textures `old_wooden_floor_02`, `wooden_panels`, `yellow_plaster`, `dark_wood` | https://polyhaven.com (each asset at https://polyhaven.com/a/<id>) | CC0 1.0 (https://polyhaven.com/license) |
| `room.hdr` | HDRI `old_room` (1k), used only for faint ambient light and reflections | https://polyhaven.com/a/old_room | CC0 1.0 |
| (code) `src/film/chapters/desk/hershey.js` | Hershey "Script Complex" glyphs (`scriptc.jhf`) for the handwriting | https://github.com/kamalmostafa/hershey-fonts | Hershey Fonts use restriction: free for any purpose provided the acknowledgements are distributed with the font data. The acknowledgement travels in the module's `/*! */` legal comment, which esbuild keeps in the bundle, and in `film-licenses.txt`: "The Hershey Fonts were originally created by Dr. A. V. Hershey while working at the U. S. National Bureau of Standards. The format of the Font data in this distribution was originally created by James Hurt, Cognition, Inc., 900 Technology Park Drive, Billerica, MA 01821 (mit-eddie!ci-dandelion!hurt)." |

Built by `tools/film/desk/compose_desk.py` (set) and `tools/film/glb.py` (clerk).
The ledger, its paper, ruling, handwriting, ink, the inkwell and the pen's steel nib are generated at runtime; the room behind the clerk re-uses the set's own walls, cabinet, books, clock and portrait.

--- film-assets/frame/LICENSES.md

# Licences: chapter 6, "A frame" (film-assets/frame/)

Every file shipped from this folder, with its source, licence and author. Everything else in the shot (the sea, waves, caustics, light shafts, sea floor shape, rocks, sponges, marine snow and the chordate *Haikouichthys*) is procedural code in `src/film/chapters/frame/`.

| File | What it is | Source | Licence | Author / attribution |
| --- | --- | --- | --- | --- |
| `sky.webp` | Upper hemisphere of a daylight sky (radiance / 16, sRGB WebP, 2048 × 512). Used above the water and seen through Snell's window. | Poly Haven, "Kloofendal 38d Partly Cloudy (Pure Sky)", 2k HDR: <https://polyhaven.com/a/kloofendal_38d_partly_cloudy_puresky> | CC0 1.0 | Greg Zaal (original), Jarod Guest (sky edits) |
| `sand-color.webp`, `sand-normal.webp` | Sand grain detail (diffuse and OpenGL normal, 1024 px WebP), tiled at 0.42 m and 1.25 m. | Poly Haven, "Shell Floor 01": <https://polyhaven.com/a/shell_floor_01> | CC0 1.0 | Rob Tuytel |
| `rock-color.webp`, `rock-normal.webp` | Rock surface (diffuse and OpenGL normal, 1024 px WebP), projected three ways on the procedural rocks. | Poly Haven, "Mossy Rock": <https://polyhaven.com/a/mossy_rock> | CC0 1.0 | Rob Tuytel |
| `trilobite.glb` | Cambrian trilobite (Olenoides-style), 20k triangles, 1024 px colour, quantized (KHR_mesh_quantization), scaled to 9.9 cm. | Tripo AI, generated on Rextail's account (tripo-cli 0.5.1, 2026-09-28). Tasks: text_to_image `8e0f2960-268f-4083-af7a-46b003f1e854` (reference only, not shipped); image_to_model `d0679180-0297-4486-aaf1-9e3b70fffd56`. | Owned output of a paid Tripo account (Tripo Terms of User Agreement §5.2.2, updated 2025-07-11, <https://www.tripo3d.ai/terms>) | Tripo AI, generated on Rextail's account |
| `anomalocaris.glb` | *Anomalocaris canadensis*, 48k triangles, 2048 px colour, quantized, scaled to 47 cm. | Tripo AI, generated on Rextail's account (tripo-cli 0.5.1, 2026-09-28). Tasks: text_to_image `07c77480-e92b-45ad-bb54-131c6e046a27` (reference only, not shipped); image_to_model `2ab74e73-bf00-401e-98bd-64f02616b8aa`. | Owned output of a paid Tripo account (§5.2.2 as above) | Tripo AI, generated on Rextail's account |

## Derivation

- The two GLBs were decimated from Tripo's web variants with meshoptimizer (through glTF Transform 4.5), their scale baked in, UVs clamped to [0, 1], positions, normals and UVs quantized (KHR_mesh_quantization) and their textures re-encoded as WebP. No Draco, meshopt compression or KTX2.
- The Tripo rights hold only if the generating account is a paid account (see `tripo-gen/LICENSES.md` in the asset workspace: under §5.2.1 Tripo keeps the rights in free users' outputs). The Tripo reference images (Gemini `banana_pro` outputs) are not shipped.
- The sky was converted from the HDR by keeping the upper half of the equirectangular image, dividing by 16 and encoding as 8-bit sRGB; the sun is drawn analytically in the shader.

--- film-assets/giants/LICENSES.md

# Licences: chapter 7, "The giants"

Every file in this folder, with its source, licence and author. The shared T. rex (`film-assets/shared/rex.glb`, `rex-lod1.glb`) is recorded in `film-assets/shared/LICENSES.md`.

## Files

| file | what | source | licence | author / attribution |
|---|---|---|---|---|
| `araucaria.glb` | Araucaria conifer in three levels of detail. The trunk is the Tripo model's, decimated; the branches are new round tapering tubes built by us (`tools/film/giants/araucaria_rebuild.py`) from the model's branch roots to its leaf clumps' places, textured with a patch of the model's own bark texture. The foliage is new: alpha-tested cards carrying a branchlet-spray texture painted procedurally by us (`needles` material), placed where the model's leaf clumps were. | Tripo AI text-to-model, task `cee5047c-d7d8-470a-ac8d-d99688462af3` | Output owned by Rextail (generated on Rextail's paid Tripo account) | Tripo AI, generated on Rextail's account; foliage texture and rebuild by Rextail |
| `cycad.glb` | Cycad (two levels of detail), decimated, textures re-encoded as WebP (1024 colour, 1024 normal, 512 roughness). | Tripo AI text-to-model, task `fe1786e3-ab1f-4977-82d9-514e6a3d6dc0` | Output owned by Rextail (generated on Rextail's paid Tripo account) | Tripo AI, generated on Rextail's account |
| `treefern.glb` | Tree fern, *Cyathea*-like (two levels of detail), decimated, WebP textures. | Tripo AI text-to-model, task `7c579698-0041-44b0-9600-837e1232d81b` | Output owned by Rextail (generated on Rextail's paid Tripo account) | Tripo AI, generated on Rextail's account |
| `fern.glb` | Ground ferns: the four scanned fronds and clumps of Poly Haven's Fern 02, plus decimated distant versions of the two clumps. The alpha map is merged into a WebP colour texture. | https://polyhaven.com/a/fern_02 | CC0 1.0 | Rob Tuytel (scanning), Rico Cilliers (modelling), Poly Haven |
| `mud_diff.webp`, `mud_nor.webp`, `mud_arm.webp` | Wet forest mud (colour, normal, AO/roughness/metal) at 1024. Small green weeds in the colour map are recoloured as dead brown litter, since they are modern flowering plants. | https://polyhaven.com/a/mud_forest | CC0 1.0 | eye-candy.xyz, Poly Haven |

## Made in code (no file)

The following are generated at load, with no third-party material: the terrain, pools, footprints and ripples; the horsetails (*Equisetites*); the mist volume and its noise; the sky, sun, bolide and impact flash; the footfall splashes; and the motes.

## Evidence

- Poly Haven licence (CC0, commercial use and redistribution allowed, no attribution required): https://polyhaven.com/license. Files were fetched from `dl.polyhaven.org` URLs listed by `https://api.polyhaven.com/files/<id>` and md5-verified.
- Tripo generation logs (prompts, task ids, credits): `tripo/plants-{araucaria,cycad,fern}.json` in the production scratch area. Generated on Rextail's paid account, so the output belongs to Rextail.

--- film-assets/hand/LICENSES.md

# Licences: chapter 8, "The hand" (`film-assets/hand/`)

Total shipped: about 36 MB (17 files), of which a desktop loads about 26 MB and a phone about 13 MB (the `-lod1` walkers and objects). The rebuilt walkers are built by `tools/film/hominins/build.sh`, the foreground objects of the species changes by `tools/film/hominins/occluders.py`; the chimpanzee and the environment by `tools/film/hand/build.sh`.

## Characters

Every character is a Tripo AI output, generated on Rextail's paid account and owned by Rextail. Four of the five were rebuilt for AAA close-up use with `tools/film/hominins/` (`build.sh` lists every step): each master aligned and measured (joints from the surface, every finger's joints from its centreline), decimated with the hands kept dense, given its own 61-bone skeleton (three phalanges per finger, a forearm twist bone, the 4th and 5th metacarpals that cup the palm) with bone-heat weights split per finger and kept apart from the body by skin distance, its lost detail baked back from the 2M-triangle master (normal and occlusion), and animated on the chapter's treadmill.

| File | What it is | Source | Licence / rights |
| --- | --- | --- | --- |
| `chimp.glb` | Chimpanzee-like ancestor (not rebuilt: its master's fingers are sculpted pressed together, which the finger measurement cannot separate). 45k triangles, 71 joints, shown at a scale of 0.85. Clips: `walk` is our own procedural knuckle-walk; `rise` is the CMU trial `07_01` retargeted onto the chimp, used as it rises. | Tripo: text_to_model `882f0d49-ff88-47c7-ae31-36c7456c7aef`, animate_rig `95150dee-a54c-441b-aec8-0784a9cff6b5` | Tripo output owned by Rextail (Terms §5.2.2). CMU: see the note below. |
| `afarensis.glb`, `afarensis-lod1.glb` | *Australopithecus afarensis*, 1.5 m, rebuilt: 101k triangles (phones 36k), 2K colour and normal maps, 1K occlusion/roughness. Clip: `walk`, CMU `07_01` retargeted (trunk and arms), feet planted on the treadmill. | Tripo: text_to_image `b0b1c2cb-5646-4e3b-9525-17ec78a7d8dd` (A-pose reference, not shipped), image_to_model `4738f53d-1e7e-4f37-8fe4-2162086c8949` (v3.1, detailed geometry, PBR) | Tripo output owned by Rextail. CMU: see the note below. |
| `habilis.glb`, `habilis-lod1.glb` | *Homo habilis*, 1.3 m, rebuilt from its earlier master: 79k triangles (phones 29k), 2K maps. Clip: `walk`, CMU `16_15`. | Tripo: text_to_image `5fda5c43-6fde-4185-8241-71ca53d2b44b` (reference only, not shipped), then image_to_model `c2997423-9f78-4515-8dc5-c970452c136a` (v3.1, detailed geometry, PBR) | Tripo output owned by Rextail. CMU: see the note below. |
| `erectus.glb`, `erectus-lod1.glb` | *Homo erectus*, 1.78 m, rebuilt from a new A-pose master: 110k triangles (phones 40k), 2K maps. Clip: `walk`, CMU `35_01`. | Tripo: text_to_image `305fb31f-ab82-41e4-8b92-e96f76c6593a` (A-pose reference, not shipped; a first reference, `f9370bee-417a-4c27-8321-73a59205dcf2`, was rejected: too modern a face), image_to_model `cfb2b2dd-4cd4-49d8-8c80-ef742a279c8d` (v3.1, detailed geometry, PBR) | Tripo output owned by Rextail. CMU: see the note below. |
| `sapiens.glb`, `sapiens-lod1.glb` | Early *Homo sapiens*, 1.75 m: the last walker and the knapper, rebuilt from a new A-pose master: 200k triangles with 51k in the hands (phones 60k), 4K colour and normal maps, 2K occlusion/roughness. Clips: `walk` (CMU `35_02`; he carries the hammerstone), `squat` (authored: he squats and picks the flint nodule up) and `knap` (authored: a 4 s loop of two glancing blows and a look at the core). His hands hold the stones themselves: the stones' point clouds ride on the hand bones and the chapter builds the stones round them (`hand/stones.js`); the grips were solved against them (`grip.py`). | Tripo: text_to_image `d24f06be-c80b-4aff-8a36-00a86bf8d7f4` (A-pose reference, not shipped), image_to_model `a89fb274-f085-4a6e-ad13-88d0c98749a9` (v3.1, detailed geometry, extreme texture: an 8K colour map, PBR) | Tripo output owned by Rextail. CMU: see the note below. |

**Finger bones.** The rebuilt walkers carry their own skeletons, measured from their meshes (`tools/film/hominins/measure_landmarks.py`, `rig_hominin.py`). The chimpanzee keeps the finger bones added to its Tripo rig by `tools/film/hand/fingers.py`.

**Reference images.** The reference images were Tripo text_to_image outputs (the banana_pro model), used only as input to image_to_model. None of them is shipped.

## Environment (CC0)

| File | What it is | Source | Licence |
| --- | --- | --- | --- |
| `env.hdr`, `sky.webp` | The image-based light (512×256 RGBE) and the backdrop band (4096×547, gamma-encoded HDR), both turned so the sun sits behind the walker. | Poly Haven, "Plains Sunset". Photography by Dimitrios Savva, processing by Jarod Guest: <https://polyhaven.com/a/plains_sunset> | CC0 |
| `soil_diff.webp`, `soil_nor.webp`, `soil_arm.webp` | Ground: cracked, stony dry soil. | Poly Haven, "Dry Ground Rocks" by Rob Tuytel: <https://polyhaven.com/a/dry_ground_rocks> | CC0 |
| `grass_diff.webp` | The mat of dead grass between the tufts. | Poly Haven, "Withered Grass" by Charlotte Baglioni: <https://polyhaven.com/a/withered_grass> | CC0 |

## The species changes' foreground objects

| File | What it is | Source | Licence |
| --- | --- | --- | --- |
| `occluders.glb`, `occluders-lod1.glb` | The four things that cross the lens at the species changes (`hand/occluders.js`), each with its centre-plane section in its node's extras: a termite mound, an umbrella-thorn trunk and a marula trunk (built by `tools/film/hominins/occluders.py`: 28k triangles each, phones 12k, 512 px maps), and a granite boulder (a photo scan, 59k triangles on both tiers, 1K colour and normal maps). About 4.1 MB (phones 3.1 MB). | Geometry: the mound and the trunks are procedural (`occluders.py`); the boulder is Poly Haven's "Namaqualand Boulder 04" by Jenelle van Heerden: <https://polyhaven.com/a/namaqualand_boulder_04>. Maps, all Poly Haven: the mound "Red Laterite Soil Stones" by Amal Kumar (<https://polyhaven.com/a/red_laterite_soil_stones>), the umbrella thorn "Bark Willow 02" by Charlotte Baglioni (<https://polyhaven.com/a/bark_willow_02>), the marula "Bark Platanus" by Dimitrios Savva (<https://polyhaven.com/a/bark_platanus>, lifted greyer), the boulder its own scan's maps. | CC0 |

The following are procedural code in `src/film/chapters/hand/` and use no third-party assets:
- the grass tufts;
- the dust at the footfalls;
- the flakes;
- the sky dome;
- the ground shading;
- the flint core and the hammerstone in the knapper's hands (`hand/stones.js`: built at load round the point clouds the sapiens asset carries on its hand bones, with no flake scar where his grip rests);
- the skin shading of every walker (`src/film/skin.js`).

The date cards are set in Geist (the site's typeface), from the Latin subset shipped with chapter 11 (`film-assets/outgrown/geist-ui.bin`; SIL Open Font License 1.1, Copyright 2024 The Geist Project Authors, credited in `film-assets/outgrown/LICENSES.md`).

## Tripo

Paid-account outputs are owned by the user under Tripo's Terms of User Agreement, §5.2.2 (last updated 2025-07-11, <https://www.tripo3d.ai/terms>). No attribution is required.

Credits spent on this chapter:
- **First build (2026-09-28):** 125 credits, taking the balance from 625 to 500. That covers the two hand models: 3 text_to_image at 15 each and 2 image_to_model at 40 each.
- **Evolution rework (2026-09-28):** 155 credits, taking the balance from 405 to 250:
  - 2 text_to_image at 15 each;
  - 2 image_to_model (detailed geometry) at 50 each;
  - 1 animate_rig (sapiens) at 25.
- **Hominin rebuild (2026-09-28):** 230 credits, 230 of the 250 on the account when it began (the account was topped up to 5,165 during the work; this rebuild kept to its 230-credit brief, leaving 5,020):
  - sapiens: text_to_image `d24f06be-c80b-4aff-8a36-00a86bf8d7f4` (15), image_to_model `a89fb274-f085-4a6e-ad13-88d0c98749a9` (detailed geometry, extreme texture, 70); an image_to_multiview, `f3548d1a-ca1f-4d25-a05d-4db5ea762205`, failed Tripo's content moderation (the figure's near nudity) and was refunded;
  - erectus: text_to_image `f9370bee-417a-4c27-8321-73a59205dcf2` (15, rejected) and `305fb31f-ab82-41e4-8b92-e96f76c6593a` (15), image_to_model `cfb2b2dd-4cd4-49d8-8c80-ef742a279c8d` (detailed geometry, 50);
  - afarensis: text_to_image `b0b1c2cb-5646-4e3b-9525-17ec78a7d8dd` (15), image_to_model `4738f53d-1e7e-4f37-8fe4-2162086c8949` (detailed geometry, 50).

## CMU Graphics Lab Motion Capture Database

Trials `07_01`, `16_15`, `35_01` and `35_02` come from <http://mocap.cs.cmu.edu>, in Bruce Hahne's BVH conversion. They were mirrored at github.com/una-dinosauria/cmu-mocap.

The CMU terms state:

> This data is free for use in research and commercial projects worldwide.

The CMU site also says the database is "free for all uses". The requested acknowledgement is:

> The data used in this project was obtained from mocap.cs.cmu.edu. The database was created with funding from NSF EIA-0196217.

The shipped clips are retargeted derivatives, baked into the GLBs above. The raw data is not redistributed.

--- film-assets/outgrown/LICENSES.md

# Chapter 11 "Outgrown": shipped assets and their licences

Every file here is CC0, made for this film, or permissively licensed.

## `room.glb`: the study and the pavilion

This GLB was modelled, lit and exported for this film in Blender 5.0. Its lighting is baked in Cycles into `lm-a.webp` and `lm-b.webp` and into a vertex colour on the scanned props.

**Made for this film (no third-party source):**

- the room shell, window and glazing;
- the desk and the 27-inch monitor with its stand;
- the keyboard, mouse, desk mat, mug, notebook and pen;
- the books, the desk-side computer, the floor lamp and the desk chair;
- the plinth.

**Poly Haven CC0 models.** Licence: CC0 1.0 (https://polyhaven.com/license).

| Asset | Source | Author |
|---|---|---|
| Desk plant (haworthia) | https://polyhaven.com/a/potted_plant_04 | James Ray Cock |
| Floor plant | https://polyhaven.com/a/potted_plant_02 | Rico Cilliers |
| Armchair | https://polyhaven.com/a/modern_arm_chair_01 | Vibrant Nordic |
| Shelving | https://polyhaven.com/a/steel_frame_shelves_03 | Ulan Cabanilla |
| Picture frame on the shelf | https://polyhaven.com/a/standing_picture_frame_01 | James Ray Cock |
| Picture frame on the desk | https://polyhaven.com/a/standing_picture_frame_02 | James Ray Cock |
| Side table | https://polyhaven.com/a/side_table_01 | James Ray Cock |
| Vases | https://polyhaven.com/a/ceramic_vase_01, https://polyhaven.com/a/ceramic_vase_02, https://polyhaven.com/a/ceramic_vase_04 | James Ray Cock |

**Poly Haven CC0 textures.** They are resized and tinted.

| Texture | Source | Author |
|---|---|---|
| Floor | https://polyhaven.com/a/concrete_floor_worn_001 | Dimitrios Savva (photography), Rico Cilliers (processing) |
| Walls | https://polyhaven.com/a/painted_plaster_wall | Amal Kumar |
| Desk top | https://polyhaven.com/a/oak_veneer_01 | Jenelle van Heerden |
| Rug and chair wool | https://polyhaven.com/a/poly_wool_herringbone | colormass (photography), Rico Cilliers (processing) |
| Lamp shade, blind and desk mat | https://polyhaven.com/a/rough_linen | colormass (photography), Rico Cilliers (processing) |

**The framed print on the wall.** It is a tonemapped black-and-white crop of the Poly Haven HDRI https://polyhaven.com/a/misty_pines by Greg Zaal, which is CC0.

## `lm-a.webp`, `lm-b.webp`

These are the room's baked light. They were made for this film: rendered in Blender Cycles from the scene above.

## `geist-ui.bin`

This is the Geist typeface (WOFF2), used for the chat window on the monitor.

- Copyright 2024 The Geist Project Authors (https://github.com/vercel/geist-font).
- Licence: SIL Open Font License 1.1 (https://openfontlicense.org).
- The font is embedded in the page's canvas drawing and is not sold on its own.

## Shared with chapter 12

The sky is `film-assets/ground/dusk.hdr`, which is Poly Haven `qwantani_dusk_2_puresky`:

- Authors: Greg Zaal (photography) and Jarod Guest (processing).
- Licence: CC0.
- The file is loaded once for both shots.

--- film-assets/screen/LICENSE-Rocketbox-MIT.txt

MIT License

Copyright (c) 2020 Microsoft

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

--- film-assets/screen/LICENSES.md

# Chapter 10, "The screen": asset licences

| File | What | Source | Licence |
|---|---|---|---|
| `worker.glb` | The worker: Microsoft Rocketbox avatar `Business_Male_07` (Catmull-Clark subdivided once; 17 of its ARKit face morphs kept; head maps at 1024), with the library's `m_sit_table_breathe_01` mocap retargeted onto it. The typing pose, finger strikes, gaze and blinks are applied at runtime. His hair is the hair cards and painted scalp of Rocketbox avatar `Male_Adult_02`, carried over by `tools/film/humans/hair.py`. | https://github.com/microsoft/Microsoft-Rocketbox | MIT, Copyright (c) 2020 Microsoft. Notice: `LICENSE-Rocketbox-MIT.txt` (ships with the site's licence page). |
| `city_night.webp` | The street outside the office window at night: the upper floors across the square in the HDRI "Hansaplatz" (by Greg Zaal), reprojected through a level, shifted rectilinear lens and exposed for its lit windows and lamps. | https://polyhaven.com/a/hansaplatz | CC0 1.0 (https://polyhaven.com/license) |
| `set.glb` | Poly Haven props and surfaces. Desk: `metal_office_desk` (Ulan Cabanilla), height ×0.94. Chair: `mid_century_lounge_chair` (Kuutti Siitonen). Lamp: `desk_lamp_arm_01` (Kuutti Siitonen, Yann Kervran), decimated. Fluorescent battens: `mounted_fluorescent_lights` (Ulan Cabanilla), joined and decimated. Props: `plastic_thermos` (PierreB3D), `vintage_stapler` (Mateusz Sadek), `cassette_player` (Oday Abuzaeed; the repaired `_fixed` window), `clipboard` (ProgrammerOnCoffee), `office_notepads` (Ulan Cabanilla), `stationery_supplies` (Mateusz Sadek), `binder_notebook` (DaDrood), `wall_clock` (PierreB3D). Room: textures `dirty_carpet` (Rohit Seervi) and `beige_wall_001` (Dimitrios Savva, Rico Cilliers). | https://polyhaven.com (each asset at https://polyhaven.com/a/<id>) | CC0 1.0 (https://polyhaven.com/license) |

- **Built by:**
  - `tools/film/screen/prep_worker.py`, after the humans scout's `seated.py` export (worker);
    then `tools/film/screen/tie_stripes.py` on the packed model (his tie's stripes rebaked
    straight on the cloth through the model's own UVs);
  - `tools/film/screen/compose_screen.py` (set);
  - `tools/film/screen/city_plate.py` (the night street plate);
  - `gltf-transform prune` / `quantize`.
- **Made at runtime, with no third-party material:**
  - the 1984 computer (`src/film/chapters/screen/computer.js`): the system unit with its drives,
    the monitor and its tilt-swivel base, the cables; a generic design of the period with blank
    badges (no maker's marks). It replaced a generated model (Tripo AI), no longer shipped;
  - the keyboard, its keycaps and legends;
  - the CRT faceplate and phosphor raster;
  - the spreadsheet and its bitmap font (drawn for the film);
  - the suspended ceiling;
  - the window and blinds;
  - the heating cabinet;
  - the room's captured environment light.
- **Not shipped:** no HDRI file (the scene lights itself from a capture of its own lit set).

--- film-assets/shared/LICENSES.md

# Shared film assets: licences

| File | What | Source | Licence |
|---|---|---|---|
| `rex.glb`, `rex-lod1.glb` | Rextail's T. rex, generated with Tripo AI on Rextail's paid account, 2026-09-28: side-profile reference (text-to-image task 30a38059-e6a5-4ac7-98e5-583e145329b6), four views (image-to-multiview 6960e1e2-fc02-4cae-8b95-2553728fbcb4) and the 2M-triangle model (multiview-to-model 7c34c6a9-4d91-4aca-b348-68ce81c4eeac). Mesh reduced, surface detail baked, skeleton built and skinned, and walk animated by Rextail (`tools/film/rex2/`) | Tripo AI, https://www.tripo3d.ai | Under Tripo's terms for paid users the generated model belongs to Rextail and may be used commercially. |
| `rex_scales.webp` | Tileable height map of fine reptile scales in clusters, for the rex's close-up skin detail | Generated by Rextail (`tools/film/rex2/make_detail.py`, Worley noise) | Rextail's own work |
| `dusk.hdr` | Blue-hour sky over the final plane and outside the pavilion (chapters 11 and 12): HDRI "Qwantani Dusk 2 (Pure Sky)", 2k | Poly Haven, https://polyhaven.com/a/qwantani_dusk_2_puresky | CC0 1.0 |

--- film-assets/world/LICENSES.md

# Chapter 4, "world": asset licences

Every file in this folder is derived from public-domain sources: NASA imagery and data, the GEBCO grid and a NASA-distributed star catalogue. The maps were resampled and re-encoded for the web; no pixel was drawn by hand.

The build script is `tools/film/world/make_assets.py`; it resamples the downloaded NASA, GEBCO and HEASARC sources listed below.

| File | What it is | Source | Licence | Credit |
|---|---|---|---|---|
| `earth-day-4096.webp`, `earth-day-2048.webp` | Surface colour, July 2004, plate carree; gamma-correct downsample of the 21600 × 10800 original | NASA Visible Earth, *Blue Marble: Next Generation*, July 2004 (surface without topography shading, `world.200407.3x21600x10800.jpg`, companion of record 73751). Collection: https://visibleearth.nasa.gov/collection/1484/blue-marble | Public domain (NASA; Earth Observatory image use policy: freely available for re-use, including commercial use) | NASA Earth Observatory, Reto Stöckli |
| `earth-clouds-2048.webp` | Cloud cover, used as the cloud deck's opacity | NASA Visible Earth, *Blue Marble: Clouds*, record 57747, `cloud_combined_8192.tif`. https://visibleearth.nasa.gov/images/57747/blue-marble-clouds | Public domain (NASA) | NASA Earth Observatory, Reto Stöckli; enhancements by Robert Simmon |
| `earth-height-2048.webp`, `earth-height-1024.webp` | Signed height, sea floor to summits, with the Blue Marble land/water mask folded into its sign (the coast is its zero crossing) | GEBCO_08 elevation and bathymetry via NASA Visible Earth records 73934 (`gebco_08_rev_elev_21600x10800.png`) and 73963 (`gebco_08_rev_bath_21600x10800.png`). The water mask is the BMNG `world.watermask.21600x10800.png` (NASA NEO Blue Marble archive, retrieved via web.archive.org). | Public domain: NASA imagery, and "The GEBCO Grid is placed in the public domain and may be used free of charge" | GEBCO Compilation Group, GEBCO_08 Grid; NASA Earth Observatory |
| `earth-normal-2048.webp`, `earth-normal-1024.webp` | Relief normals computed from the same GEBCO height (land and sea floor) | As above | Public domain | GEBCO Compilation Group; NASA Earth Observatory |
| `moon-color-1024.webp` | Lunar colour (LROC WAC mosaic), plate carree | NASA Scientific Visualization Studio, *CGI Moon Kit*, ID 4720, `lroc_color_poles_16k.tif`. https://svs.gsfc.nasa.gov/4720 | Public domain (NASA SVS: "All of our content is in the public domain") | NASA's Scientific Visualization Studio (Ernie Wright, Noah Petro); LRO LROC team |
| `moon-normal-1024.webp` | Lunar relief normals computed from the LOLA elevation model | NASA SVS *CGI Moon Kit*, ID 4720, `ldem_64_uint.tif` (LRO LOLA). https://svs.gsfc.nasa.gov/4720 | Public domain (NASA) | NASA's Scientific Visualization Studio; LRO LOLA team |
| `stars.bin` | Positions, V magnitudes and B-V colours of the 9,110 stars of the Yale Bright Star Catalogue (float32 records: RA, Dec, V, B-V) | Yale Bright Star Catalogue, 5th revised edition (BSC5P), NASA HEASARC. https://heasarc.gsfc.nasa.gov/W3Browse/all/bsc5p.html | Public domain (catalogue data distributed by NASA HEASARC) | D. Hoffleit and W. H. Warren Jr., Yale University Observatory (1991); NASA HEASARC |

## Not shipped

The scout also prepared the ESO/S. Brunier Milky Way panorama (CC BY 4.0). At the exposures this shot uses, it rendered below one display step, so it was dropped and needs no credit.

## Generated at run time (no files)

- **The molten crust:** a crack network baked on the GPU.
- **Colours:** blackbody colours from Planck's law.
- **The atmosphere tables:** Rayleigh, Mie, ozone and the Hadean ash haze, with Hillaire's multiple-scattering method (EGSR 2020).
- **Close-range detail:** cumulus erosion and sea glitter, as procedural noise.