[Chimera-users] Center on surface at mouse accelerator

[Daniel P Farrell]

re ctrl-click: yes I was originally using place marker (sorry not sphere)
on surface + ctrl-click + delete marker to emulate this behavior, if that
makes sense.
Anyways, Awesome! Thanks so much, can't wait for the nightly!
~Dan

On Wed, Aug 30, 2017 at 6:10 PM, Tom Goddard <goddard at sonic.net> wrote:

> Hi Dan,
>
>   Thanks for the code.  You know ctrl-click with the right mouse button
> centers on the clicked atoms?  It also centers when you click on a surface,
> but it uses the center of the entire surface instead of the point you
> clicked on.  It seems like it would be more useful to center on the surface
> point you clicked on so I changed the code to do that — will be in
> tonight’s Chimera builds.  I think this is better than using a keyboard
> shortcut since few people enable the keyboard shortcuts.
>
>         Tom
>
>
> > On Aug 30, 2017, at 11:44 AM, Daniel P Farrell wrote:
> >
> > Hello,
> >
> > I found myself constantly needing to re-center on different regions of
> EM density maps, and I was originally just dropping spheres on the surface,
> centering on those, then deleting them.  Finally I got sick of that and
> wrote this. It will center the window on the surface of whatever surface
> the mouse is currently overlaying.
> >
> > I found this to be a very helpful addition when looking at large EM
> maps, and was thinking other people might too, after using it for a while I
> feel as though it could be part of trunk since I use it so much.
> >
> >
> > basically it would require the addition of this to
> standard_accelerators.py
> >
> > ... other accelerators..
> >
> >     ('zx', 'Center view on surface where mouse is located',
> center_on_surface_at_mouse),
> >
> > ... zx because it's close to where you rest your hands on the keyboard...
> >
> > def center_on_surface_at_mouse():
> >   from chimera import selection, tkgui
> >   hits = []
> >   w = tkgui.app.graphics
> >   x = w.winfo_pointerx() - w.winfo_rootx()
> >   y = w.winfo_pointery() - w.winfo_rooty()
> >   from Surface import surface_models
> >   import VolumePath.tracer as tracer
> >   hits.extend(tracer.surface_intercepts(x, y, surface_models()))
> >   xyz, model = tracer.closest_hit(hits)
> >   print(xyz)
> >   if xyz:
> >     print('cofr %f,%f,%f' % (xyz[0],xyz[1],xyz[2]))
> >     chimera.runCommand('cofr %f,%f,%f' % (xyz[0],xyz[1],xyz[2]))
> >     chimera.viewer.camera.center = xyz
> >
> > cheers!
> > ~Dan
> >
> >
> >
> >
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>
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