Huge planet shape

Vladsonus

Hi, I would like to know how make giant planet mesh including LOD and collision shape. Well giant means something like earths scale 1:1 I need this for my space simulator game. If you know Kerbal Space Program (KSP) you will know what I mean.

I hope you'll have some idea how to do that or at least something close to this idea.

pagebt

This is usually more than one mesh. Custom LOD mesh swaps based on viewpoint of the camera, often with "cloud" layers or other obfuscation to hide the transitions.

That is, if your ground is to have any detail, mesh sculpting or texture.

If it was just a sphere, I think you could do it with a subdivided mesh at varying stages of LOD.

Here is a discussion on Reddit that has some sample code: LINK

Vladsonus

It has to be sphere with heightmap. Mentioned link leads just to kind of mesh swaping LOD. I need LOD based on polygon change on same mesh. Position on sphere closer to camera has maximum polygon count and oposite side minimum.

I found it but only for plane terrain. It is perfect but I need this for sphere...

Megalomaniak

Here's an interesting take on procedurally generated spherical planet: https://whenitsdone.org/2014/07/29/map-generation-on-spherical-planet-part-i/

The catch is that the author is not using godot, but implementing it(if I'm not mistaken) in objective C, but it might give you some ideas.

wombatstampede

If I remember correctly then Godot uses single precision floats (4 bytes). This might pose some precision problems when working in really "big" scale.

Here's a hint about 64bit double precision: https://github.com/godotengine/godot/pull/21922

Vladsonus

Thanks for your answers!