High!

Lukas Winter schrieb:

 > So... wait, you have a "full-fledged POV solar system" and no way of 
converting coordinates? How can you place _any_ object if you do not 
have cartesian coordinates which POV uses everywhere?
 > Take a look at chapter 3 of the tutorial, there the author describes 
how to convert geometric and cartesian coordinates.

Which tutorial? I'm not sure whether you mean the official POV-Ray 
tutorial coming with the Windows version...

 > So, how do you for example place the sun? Do you do something like...
 > object
 > {
 >   sun
 >   translate z*suns_distance_from_earth
 >   rotate x*suns_latitude_viewed_from_earth
 >   rotate y*suns_longitude_viewd_from_eart
 > } ?

No, of course not... I use a heliocentric system with the Sun sitting at 
the origin! But this doesn't tell me yet how to convert Earth surface 
geographic coordinates to cartesian coordinates...

See you in Khyberspace!

Yadgar

Post a reply to this message