Skydome - How to do

SSmutny · Post by **SSmutny** » Fri Jan 16, 2004 1:18 pm

Hello!

I have played a bit with Skydomes... but i am not satisfied with the finish.
Does anyone know how to do that right? I have modelled the Skydome with 3ds max. But... at the beginning the skydome was to large... so it was out of range of the camera. If i scale it down, it looks to small. Is there a special way to create a good looking Skydome... and what about cloud layers?

greets Sascha

Boogle · Post by **Boogle** » Fri Jan 16, 2004 4:13 pm

I would check how big Niko makes the skybox that is currently used, and make the dome that size.

powerpop · Post by **powerpop** » Fri Jan 16, 2004 5:37 pm

also, it seems like there would (should) be a way to tell the scenemanager to always render a model no matter where it is - glad you started the skydome - i would like to do some work there as well if you want to share code/data back and forth (?) - i want to do a cloud layer and color gradations, etc.

keless · Post by **keless** » Fri Jan 16, 2004 5:55 pm

well, you can turn bounding box frustrum culling off.. dunno if that will still show it if its out of camera range or not

SSmutny · Post by **SSmutny** » Fri Jan 16, 2004 8:40 pm

That's what i was thinking about... lets work together on this problem

Maybe Nico can give us some hints for this.

greets sascha

here my icq number for code exchange: 157762244

saigumi · Post by **saigumi** » Fri Jan 16, 2004 9:37 pm

If you look the code for a skybox(CSkyBoxSceneNode.cpp + .h), the skyboxes vertices are created at runtime

The two approaches that I can think of that you could take are:
1. Pre-generate a sphere mesh and scale it so that the scaled mesh fits within the dynamitcally camera far distance minus 0.1f.

2. Generate skysphere as a custom sceneNode, generating each S3DVertex for it. You wouldn't want to do it by hand like the skybox is done, obviously, but through other functions. Google should help in this as none of us are the first to think up a "skydome".