opengl part (RNA3D) still relies on motif

[westram]

• fails compilation

[aboeckma]

Wo muss ich denn klicken in ARB um so ein 3D Fenster mal zu sehen?

[westram]

ARB_EDIT4 - einer der Knoepfe in der top-area

[epruesse]

What do we do about this? Porting RNA3D is a MAJOR effort. It's not just that I'd have to write an OpenGL widget (there seem to be some, but they have not been updated in a long time and IIRC there is no GTK3 support for them at all). It's also that RNA3D uses very old OpenGL calls that no longer exist. I don't think this is a "weeks" type project, more a "months" type one.

[westram]

Replying to epruesse:

What do we do about this?

The feature is quite essential, since it gives you an idea about the accessibility of probes by showing their location in the molecule. So dropping it would be quite a downgrade.

Porting RNA3D is a MAJOR effort. It's not just that I'd have to write an OpenGL widget (there seem to be some, but they have not been updated in a long time and IIRC there is no GTK3 support for them at all).

Does arb really need to be gtk3? Is gtk2 no longer supported on gtk3-systems?

[epruesse]

Replying to westram:

The feature is quite essential, since it gives you an idea about the accessibility of probes by showing their location in the molecule. So dropping it would be quite a downgrade.

IANAB (i am not a biologist), but to my knowledge they make sure the RNA is unfolded for FISH etc. anyway. At least, at MPI people do lots of probe design and haven't complained about us not having RNA3D (SGD doesn't do 3D properly, so OPENGL=0).

The 3D thing is definitely nice to have, but I doubt it's mission critical. I'd postpone fixing it to after the merge. Maybe we should consult the expert , or at least WL and FOG on this?

Porting RNA3D is a MAJOR effort. It's not just that I'd have to write an OpenGL widget (there seem to be some, but they have not been updated in a long time and IIRC there is no GTK3 support for them at all).

Does arb really need to be gtk3? Is gtk2 no longer supported on gtk3-systems?

The reason we started with Gtk2 was mostly compatibility. GTK3 is definitely better, but not yet supported everywhere. I'm just trying to keep a possible move to GTK3 (a year or two from now) as simple as I can. Right now I think we could even support both with a few #ifdef switches.

[epruesse]

I looked into it a bit more, and it doesn't seem to be quite as difficult as I originally though. Still, I'd estimate a good 4 weeks full-time until it works well enough. There is 4k lines in RNA3D and GL. The thing that worries me is that it's not just about getting a GTK window with a GL context in a drawing-area, but that there were some GL calls that I could hardly find documentation on used in RNA3D. That's a bit of a worrisome unknown for me.

[westram]

gtk-port is dead

[westram]

Ticket retargeted after milestone deleted