# Rendering sources

`director.js`, `lines.js` and `sky.js` are reused unchanged from Luke Steuber's Free Trader rendering foundation, `game-riffs` commit a25b7b1. This copy comes from the frozen 2026-10-08 source snapshot. Ballista uses its camera fitting/direction, screen-space line meshes, coordinate conversion and Earth orientation directly.

These three source files and Ballista's original source are MIT licensed, copyright 2026 Luke Steuber.

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.

Vendored Three.js r183 keeps its own MIT notice in `vendor/LICENSE-THREE.txt`. Earth day imagery: Solar System Scope, CC BY 4.0; unchanged 1024×512 resized asset with source, modifications and hash recorded in `textures/PROVENANCE.md`. Only the Earth image listed there is included here.

The Sun's granulation shader, representative Mars crater pattern and incoming-object locator meshes are original procedural illustrations by Luke Steuber. They are included under the MIT license above. The Mars pattern is not a geographic map. System-view body radii and object silhouettes are enlarged locators; Earth detail uses its physical radius. These illustrations do not supply evidence about an unresolved object's identity.