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"omniverse" <omn### [at] charter net> wrote:
> After reading about this at:
>
>
http://news.povray.org/povray.documentation.inbuilt/message/%3Cweb.57f3be98a39309ab21263ef70%40news.povray.org%3E/#%3
Cw
> eb.57f3be98a39309ab21263ef70%40news.povray.org%3E
>
> I had to get another look for myself at what happens when changing viewpoint for
> +z. Found the x and y rotations appear opposite, yet z remains counterclockwise
> when seen from these different directions and with the change to x sign.
>
> First is the usual view for many POV-Ray scenes with camera at a -z coordinate,
> looking toward +z. The default 'up' +y and 'right' +x (or <4/3,0,0>).
Second is with negative 'right', or right <-4/3,0,0>, and 'up' still positive y.
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