3D aircraft models used by the ARGOS ATLAS map (/models/*.glb)

The map draws the aircraft closest to the camera with these glTF models. They are third-party works,
not covered by any licence of ARGOS ATLAS's own code. Each one is available under the Creative Commons
Attribution 4.0 International licence (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/), which
permits commercial use with credit, a link to the licence and an indication of changes. These credits
do not imply endorsement by the original creators.

The files come as they were prepared for God's Eye View (https://github.com/bilawalsidhu/gods-eye-view,
public/models/, by Bilawal Sidhu), who modified each original as noted below. ARGOS ATLAS does not change
the files; at runtime it tints each model with the colour of the aircraft on the map.

airplane.glb
  "boeing 747" by zairiq-123 (https://sketchfab.com/zairiq-123)
  https://sketchfab.com/3d-models/boeing-747-9b16672038ba48f98e6d80a159044ed9
  Changes (God's Eye View): substantially modified and optimized, including geometry and material
  simplification and coordinate and orientation preparation; scale baked into the mesh; centred origin;
  glTF +Y-up with the nose towards local -X.

jet.glb
  "Private Jet" by Nick the Name (https://sketchfab.com/Nick_The_Name)
  https://sketchfab.com/3d-models/private-jet-cbdd1de6ced9461e950eafaa302cc82b
  Changes (God's Eye View): repackaged as a glTF binary; hierarchy transforms baked into the meshes;
  location, rotation and scale applied; centred origin; metre scale, +Y-up, nose towards -X.

bell206.glb
  "Bell 206 JetRanger" by terran4627 (https://sketchfab.com/terran4627)
  https://sketchfab.com/3d-models/bell-206-jetranger-d2f7ba1d671549d4b26aaf834139a1dd
  Changes (God's Eye View): geometry and material simplification, textures resized to 256 px WebP,
  orientation and scale baked to real-world metres (Y-up, nose -X), centred origin.

c172.glb
  "Cessna 172" by e737 (https://sketchfab.com/e0057537)
  https://sketchfab.com/3d-models/cessna-172-64cddaee5aff470682659a8c08525046
  Changes (God's Eye View): as bell206.glb.

citation2.glb
  "1990 Cessna Citation, Texture Detailed, Exterior" by BlenderCommunityHead (https://sketchfab.com/aboodgoudagad)
  https://sketchfab.com/3d-models/1990-cessna-citation-texture-detailed-exterior-a78839624fe64900a8352cb23462350a
  Changes (God's Eye View): as bell206.glb.

mq9.glb
  "MQ-9" by IProZenoN (https://sketchfab.com/IProZenoN)
  https://sketchfab.com/3d-models/mq-9-fabe963feb354c5584b51f9c470c3f7e
  Changes (God's Eye View): as bell206.glb.

b789.glb
  "Boeing 787-9" by Nobilis 2 (https://sketchfab.com/nobilishornet2)
  https://sketchfab.com/3d-models/boeing-787-9-b6711e2e698e4e469675c1154a50b7a3
  Changes (God's Eye View): as bell206.glb.

atr72.glb
  "ATR 72 - 600" by Oyan3D (https://sketchfab.com/oyan3D)
  https://sketchfab.com/3d-models/atr-72-600-1e1a7186f7444d288675262fcee44744
  Changes (God's Eye View): geometry and material simplification, textures removed with the dominant
  material colours baked into PBR factors, orientation and scale baked to real-world metres (Y-up,
  nose -X), centred origin.

narrowbody.glb
  Not a third-party work and not under the licence above: ARGOS ATLAS builds it from code
  (scripts/build_plane_models.mjs), for the single-aisle twinjets the set above lacks.