clipka wrote:
> SharkD schrieb:
>> Yes, but precision errors occur if I make the spheres *too* big. How 
>> big would be big enough? In my scene 1 unit = 1 meter.
> 
> Don't worry about precision issues.
> 
> For exact scale, the atmosphere should have a radius of some 6e+6 units, 
> which is indeed comparatively close to the distance limit at which 
> objects disappear; still, it's within that limit. Also note that this 
> distance cut-off is /relative/ to a ray's origin (e.g. the camera), and 
> with an atmosphere thickness of just a few 1000 units and the camera 
> just a few units away from the ground, you'll only be able to see a 
> small section of the atmosphere anyway. Somewhere between 1e+5 and 1e+6 
> units I'd guesstimate - dunno.

Correction, I just double-checked and 4 units = 1 meter. I hope that 
doesn't affect anything.

-Mike

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