BLACKTOP BAY — GT MODEL SOURCE AND MODIFICATION NOTICE

Original work: Ferrari 458 Italia
Original creator: vicent091036
Original source: https://sketchfab.com/models/57bf6cc56931426e87494f554df1dab6
Original creator attribution in the official Three.js car example:
https://github.com/mrdoob/three.js/blob/dev/examples/webgl_materials_car.html

License: Creative Commons Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/
Full license text is distributed alongside these files in CC-BY-4.0.txt.

License evidence: the official Three.js media-license audit lists
"gltf/ferrari.glb | CC-BY 4.0, External License":
https://github.com/mrdoob/three.js/issues/23089#issuecomment-1001258942
The original Sketchfab listing was unavailable when checked on 2026-10-01.
Attribution and license are retained from the official Three.js redistribution
and its maintainer's published license audit.

Redistributed source asset:
https://github.com/mrdoob/three.js/blob/dev/examples/models/gltf/ferrari.glb

Distributed adaptations: gt-base.glb and gt-base-low.glb
Adapted for Blacktop Bay by AppsOverFlow, 2026.
The Three.js Draco edition was decoded into two browser-oriented detail levels.
The painted body, glazing, chrome and articulated wheels, rims, tyres and wheel
brakes retain their original visible geometry and surface normals. Only secondary
interior/detail surfaces are welded and meshoptimizer-simplified. This preserves
the source's smooth coachwork and recognizable wheel spokes; the earlier broad
permissive simplification distorted those reflective surfaces and was replaced.
The high-detail asset has 251,076 triangles (6,942,760 bytes); the mobile asset
has 209,180 triangles (5,727,276 bytes). Both retain 179,926 protected triangles,
named nodes and source materials. Runtime roofs, aero and liveries add geometry.
The files require no runtime decoder. The original model contained no image textures.

Reproduction: scripts/rebuild-gt-assets.mjs accepts the original licensed source
path and documents pinned offline tool dependencies. It does not fetch assets.
Original source SHA-256:
cafe3f48da6797aa9bde75ca768bc5b57db366575fd233e90df186ae988a876e
Secondary-detail simplification uses ratios 0.4 (high) / 0.17 (mobile), errors
0.003 / 0.008, and normal weights 0.05, while all protected surfaces remain intact.

The Apex GT, Apex Sprint, Torque R, Torque RS and Kestrel GT-R in-game builds further adjust scale, orientation and materials, animate
wheel assemblies, and add original fixed racing roofs, roll cages, aero and liveries. These game
variants, their names and handling are fictional. They are based on the
credited Ferrari 458 Italia mesh, not claimed to be wholly original models.

No affiliation with or endorsement by the original creator, Ferrari,
Three.js, any manufacturer or racing team is implied. CC BY attribution
does not grant trademark rights. Blacktop Bay does not use the source as an
endorsement or add manufacturer/team branding to its fictional variants.