Thank you for your response. I would prefer to use a right handed coord
system, but I have no idea how to specify my own vectors to do this in
povray.

If my camera orientation is the only thing that matters, would it be
possible to somehow rotate the camera so it views the coord system
correctly? After fixing the minor problem of the pigment part in my code, i
notice that bascially the oreintation of the camera is upside down. I am
currently just trying to rotate the camera to view the scene properly.

I realize that in the future, just rotating the camera will not help me in
the calculating of different objects because of the left-handedness of the
system, but for now, I dont think im worried about that.



on a side note, in this system the unit vectors x,y,z are basically defines
as <1,0,0>,<0,1,0>,<0,0,1> respectively. Couldn't I just reassign the
vectors to what they would be in a right handed system? such as z =
<0,0,-1>  ?
I will try nonetheless.

Thanks again
Paul

"Slime" <fak### [at] emailaddress> wrote:
> > From what I understand, povray uses a x-z 2d
> > plane with a y 3d dimension plane. I am used to a x-y 2d and z 3d.
> >
> > This really shouldn't matter, should it? I can just place my camera
> looking
> > at a certain way and i can describe all of my objects in any coordinates I
> > would like.
>
>
> It matters only in one place, where POV-Ray calculates the camera
> orientation from your location and look_at vectors. It uses the cross
> product between vectors to get perpendicular vectors, but it assumes that
> the result points a specific way from the vectors operated on; if you're
> using a right handed coordinate system instead of a left handed one, this
> assumption will be incorrect. The result is that the image will look
> mirrored from what you would expect in a right-handed system. You can avoid
> this by specifying the direction, up, and right vectors manually, but you'll
> have to calculate them yourself.
>
>  - Slime
>  [ http://www.slimeland.com/ ]

Post a reply to this message