Am 20.07.2016 um 19:06 schrieb Stephen:
> On 7/20/2016 5:27 PM, clipka wrote:
>> Am 20.07.2016 um 18:02 schrieb Stephen:
>>
>>> Besides using an image map. You can add a normal map to give some depth
>>> and a spectacular map for the seas. You can find some here
>>> http://planetpixelemporium.com/earth.html
>>
>> You mean specular, right? ;)
>>
> 
> Who rattled your cage? :P

OOoooh -- careful! This Code Monkey could accidently type a few lines of
code that make POV-Ray crash specifically on /your/ computer. So stop
talking, human, and hand over the bananas! ;)

>>> The atmosphere is always tricky to do and I generally cheat and use a
>>> cone behind the planet in line with the camera.
>>
>> I find atmosphere comparatively easy --
> 
> Yes you do, don't you. :(
> 
>> as long as I don't try to add
>> clouds.
>>
> 
> Clouds are problematic especially in an animation. The simplest way
> would be to use an image map.

Tried that, and found it looking unconvincing. The best thing I've
managed to come up with so far was a combination of an image map and a
spherical function to create media with a cloud-ish density distribution.

It would be cool if we had a set of cloud image maps epresenting cloud
densities at different altitudes, but I guess such a thing doesn't exist
(yet).

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