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"Slime" <fak### [at] email address> wrote:
> > http://tag.povray.org/povQandT/languageQandT.html#largescaleproblems
>
> That VFAQ entry could probably benefit from a suggestion or two about
> workarounds.
>
> To EagleSun: Specifically, the best solution is probably to greatly scale
> down your solar system (aside from the earth) with reference to the camera's
> position. So basically, do this:
>
> object {earth ...}
>
> union {
> object {sun ...}
> object {planet ...}
> ... more objects ...
>
> translate -cameraPosition
> scale smallValue
> translate cameraPosition
> }
Ahh :( Thanks for this tip guys....
I tried 2 views... basically at 1 point, I was 4 meters above water viewing
at a position 20 meters away, the sun was 149 billion meters away with a
diameter approximately 10* the size of the sun, so that you should have
been able to see the sun sphere quite big and bright. To make it appear, I
brought it closer and made it smaller (both by factors of 10000 and
1/10000, respectively). This scaling factor can get complicated, because
at 1 point, I wanted to render a scene where the camera was about 4000 km
above the surface (or 4,000,000 meters above the surface). Setting the
scale to 1000 caused too much fading of color in the atmosphere, and in
certain situations, setting the scale to 1 caused the atmosphere to be
"disconnected" from the planet. I guess rendering scenes that Astronauts
get to see are extremely difficult......
Changing the scale and distance of various objects is gonna be tricky.......
and I was hoping to reserve this kind of mixed scaling for objects outside
of Solar System....
And after reading the article at
"http://tag.povray.org/povQandT/languageQandT.html#largescaleproblems", I
agree that it's too restrictive... and I was hoping that POV Team could let
the users decide on the restrictions. Granted faraway objects will not be
accurate.... but... viewing the sun at such a faraway distance, I don't
think anyone will notice.
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