[vtkusers] About some design features of the vtkCamera class not commented in the VTK books

[Kent Eschenberg]

Jose,

Why not just read the code? That would provide the most reliable and complete 
answers.

Kent

jsl wrote:
> Hi,
> 
>  I've bought both VTK's books but I didn't found any explanation about
> some important design aspects of the vtkCamera model considered
> in VTK.
> 
> I need to know how vtkCamera class implements some theoretic notions
> of general camera models. In particular:
> 
> Where is placed or how could I fix a given center of projection?
> 
> Where is located the view plane? In front of or behind the center of
> projection?
> 
> When the focal distance is changed, Does also the angle of view 
> automaticaly
> change?
> 
> Any additional information about this issue will be greatly appreciated.
> 
> Kind regards.
> 
>   Jose.