> > Next question - is it possible to introduce interactive
> > manipulation of the shape's transparency? (I understand that
> > OpenGL allows to do so). Or at least change the view to
> > hardcoded 'predefined' transparent mode by pushing some button.
>
> ROOT doesn't provide any "Alpha" color attrtibute that "blending" feature
> of OpenGL needs. Anyway this feature consumes a lot CPU been implemented.
> ( Three years ago it was too expansive )
>
> You may try "w" / "r" / "c" / "t" commad (see above).
>
Well I meant actually 'semitransparent' or 'foggy' the sort I saw in
displays produced by 'OpenInventor'.
Wireframed and Hidden line modes aren't of much use, given the
complexity of the detector geometry, since there are too many lines which
obstruct the view.
Thank you for the explanation of the 'zooming' in OpenGL. I just got
used to X3d way of doing it and was somewhat confused when tried OpenGL.
Now I see that 'zooming' (I assigned it to a button in my 'special'
canvas) in the Pad, which contains a TView, actually leads to the desired
effect in OpenGL window.
regards,
Dmitri