Automatic Orbit sprites

[YPetremann]

As I understand, for now the orbit sprite need to be provided by the planet mod author, this can be interesting for special orbits, but most of them are vanilla like orbits.

I propose that new planets could set orbit sprite to "automatic".
PlanetsLib would have a set of predefined orbits included,

In the final-data-stage for each planet that chosen the automatic sprite, it would check orbit.distance to select the appropriate orbit sprite and scale it.

this also mean that factorio will only load orbit sprite that are strictly needed, they would be reused, planet mod authors would not need to provide their own vanilla like orbit sprite and finally those would not be badly affected by mods that change the orbit distance.

[danielmartin0]

We didn't implement this because when you scale an orbit graphic the line width changes.

[YPetremann]

This is the reason I consider that the mod adds not only one but a few predefined orbits to have it select the best one to mitigate the orbit changes

One main reason I propose this is that some mods are made to move some planets sometimes they change their orbit radius, and so they need too to include a new orbit sprite (I know that the previous orbit it then not loaded) but in the end a lot of planets uses similar orbits.

there could be a way to warn that the selected orbit has too much scale difference.

Unless factorio devs officially implements parent bodies and so correct orbit drawing, this will