[vtk-developers] QVTKWidget

[Wylie, Brian]

Bill,

Licensing is an issue for QT. But I just want to point out for folks,
that QVTKWidget is just an interface between QT and VTK, so there's no
licensing issues for QVTKWidget, just for the libraries that one may
link when using it. 

Probably an obvious statement, but better clear than cloudy.... :)


	Brian Wylie
	Sandia National Laboratories
	MS 0822 - Org 9227 - Building 880/A1-J
      (505) 844-2238   FAX (505) 845-0833
 

> -----Original Message-----
> From: Lorensen, William E (Research) [mailto:lorensen at crd.ge.com] 
> Sent: Tuesday, December 14, 2004 3:22 PM
> To: 'Simon Warfield'; Wylie, Brian
> Cc: vtk-developers at vtk.org
> Subject: RE: [vtk-developers] QVTKWidget
> 
> It is great to see the vtk community getting larger with 
> additional gui support. However, people should be aware of 
> licensing issues. There was a lot of discussion about the 
> numerous QT licenses on the Insight users list last May.
> http://public.kitware.com/pipermail/insight-users/2004-May/008323.html
> 
> Also, folks need to be careful about non-commericial use 
> licenses since even Universities can be considered 
> "commerical" if they compete for grants. At least this is 
> true in some recent Duke University litigation.
> 
> VTK and ITK set great examples with their non-restrictive licenses.
> 
> Bill
> 
> 
> -----Original Message-----
> From: Simon Warfield [mailto:warfield at bwh.harvard.edu]
> Sent: Tuesday, December 14, 2004 2:48 PM
> To: Wylie, Brian
> Cc: vtk-developers at vtk.org
> Subject: Re: [vtk-developers] QVTKWidget
> 
> 
> 
> Sounds great to me.  I would like to try it out.
> 
> Wylie, Brian wrote:
> 
> >All,
> >
> >There are several QT/VTK widgets out there and I've tried them all...
> >
> >We have a guy working with us.. Clinton Stimpson from 
> ElemTech and he 
> >has put together a very nice implementation that IMHO is superior to 
> >other implementations....blah...blah...blah...
> >
> >Anyway I would like to add the class to VTK, and will do so 
> in a couple 
> >days unless I here otherwise.
> >
> >Here's a description from Clint...
> >
> >QVTKWidget is a package which allows putting a 
> vtkRenderWindow in a Qt 
> >GUI.  I know there are already a bunch out there, but I 
> didn't like any 
> >of them.  I thought they were too complicated and awkward for such a 
> >simple problem.  And also, VTK doesn't have any examples of 
> using a Qt 
> >GUI with VTK as it does with MFC and others.
> >
> >To be consistent with the other GUI/VTK integration 
> packages/examples.
> >I'd probably recommend putting QVTKWidget in 
> VTK/Examples/GUI/Qt along 
> >with a few examples of using it.
> >On the otherhand, it is more than just an example as it is usable in 
> >several projects as-is without any changes.
> >So, perhaps it goes under Utilities with an option to build it.
> >
> >It's design is more Qt-ish design than other Qt/VTK packages.  As a 
> >result, better Qt integration is possible.
> >The design philosophy is to let VTK do what it does best and 
> let Qt do 
> >what it does best.  The class name starts with 'Q' to emphasize the 
> >Qt-ishness of it.
> >
> >The design allows the following features:
> >1. Has a designer plugin for rapid development of GUI's using VTK.
> >2. Significantly less code than other Qt/VTK packages.
> >3. Can even use the same widget class with image viewer 
> classes in VTK.
> >4. Instead of using Qt's opengl extension, it uses VTK to initialize 
> >the
> >
> >windows.  As a result, QVTKWidget is "device independent".  For 
> >example,
> >
> >on Unix, one can use Mangled Mesa or OpenGL without rebuilding 
> >QVTKWidget and use them concurrently in the same application.
> >
> >Other features include
> >1. Works with all of VTK such as, 3d widgets, interactor 
> styles, scroll 
> >wheel events, etc..
> >2. Works and tested on Windows, Linux, MacOSX, HP-UX, IRIX, SunOS.
> >3. Supports reparenting (either at the Qt level, or by swapping 
> >instances of vtkRenderWindow).
> >4. Works with Qt3 and Qt4 (preview 2).
> >
> >There are also some examples in using it.
> >
> >*Note:  For the MacOSX, there are some exceptions.  I made 
> some AppleGL 
> >calls to make up for deficiencies in VTK and Qt3.  With Qt4, HIViews 
> >can
> >
> >be used, but VTK isn't ready for that yet.  Once VTK's 
> deficiencies are 
> >removed, then most of the MacOSX specific code goes away.
> >
> >
> >	Brian Wylie
> >	Sandia National Laboratories
> >	MS 0822 - Org 9227 - Building 880/A1-J
> >      (505) 844-2238   FAX (505) 845-0833
> > 
> >
> >_______________________________________________
> >vtk-developers mailing list
> >vtk-developers at vtk.org
> >http://www.vtk.org/mailman/listinfo/vtk-developers
> >  
> >
> 
> 
> --
> Simon K. Warfield, Ph.D. warfield at bwh.harvard.edu Phone:617-732-7090
> http://www.spl.harvard.edu/~warfield           FAX:  617-582-6033
> Associate Professor of Radiology,          Harvard Medical School
> Director, Computational Radiology Laboratory Thorn 329, Dept 
> Radiology,  Brigham and Women's Hospital
> 75 Francis St, Boston, MA, 02115
> MA 280, Dept Radiology, Children's Hospital
> 
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