[vtk-developers] Problem using VTK in a Cocoa application with the latest VTK (october 26th and later).

[David Cole]

TestInteractorTimers ends with an undefined image based on how many timer
events fired during the test.... So it will be different for different
machines. It runs until a 10-second one-shot timer fires and then
automatically quits -- and the number of renders occurring varies from
machine to machine.

On 10/31/07, Mathieu Coursolle <mcoursolle at rogue-research.com> wrote:
>
> TestInteractorTimers is one of those tests. However, it passes even if
> the view is empty. I don't think it compares the window content, only
> the timers result.
>
> I guess we could add an image compare to that test?
>
> Mathieu
>
> >I think we should add something similar to  SimpleCocoaVTK  as a test
> >in Rendering/Testing, but not as an Xcode project example, it should
> >work as any test, through a call to ctest.
> >
> >Even if we fix that now, it will prevent us from future breakage.
> >
> >On 10/30/07, David Cole <david.cole at kitware.com> wrote:
> >> Is that a bug?
> >> Yes.
> >>
> >> Would you recommend a particular fix...?
> >>
> >>
> >>
> >> On 10/30/07, Mathieu Coursolle < mcoursolle at rogue-research.com> wrote:
> >> > Hi VTK developpers,
> >> >
> >> > I have been investigating a bit, and here is what I noticed.
> >> >
> >> > The way SimpleCocoaVTK is done right now calls
> >> > vtkRenderWindowInteractor::Initialize() before it is
> >> rendered
> >> > the first time.
> >> >
> >> > At that point, CreateAWindow in vtkCocoaRenderWindow is called.
> >> > It doesn't matter if the window is created of not. However,
> OpenGLInit()
> >> > is called, which calls ReadOpenGLExtensions. That seems to required
> that
> >> > the renderWindow been rendered once at that point (which is not the
> case).
> >> > If not, it calls render. However, render looks if OnScreenInitialized
> has
> >> > been set to 1. It has not since we are still in CreateAWindow (it is
> set
> >> > at the next line).
> >> > Since it has not, it calls CreateAWindow again (which overwrites the
> one
> >> > we are using)!
> >> >
> >> > Is that a bug?
> >> >
> >> > Thanks!
> >> >
> >> > MAthieu
> >> >
> >> >
> >> >
> >> ===========================================================
> >> > Original mail
> >> >
> >> ===========================================================
> >> >
> >> > Hi VTK developpers,
> >> >
> >> > We developped a Cocoa application using VTK in an custom NSView.
> >> > However, it stopped working since last Friday (october 26th).
> >> >
> >> > If we use october 25th build, it works all right, but our render
> >> > window will not appear if we use a newer version. The code is based
> >> > on SimpleCocoaVTK  (<
> >> http://www.rogue-research.com/VTK/simpleCocoaVTK.html>),
> >> > which has the same problem as we do if using the latest VTK (October
> >> > 30th - 15h30).
> >> >
> >> > The vtkRenderWindow disappear at launch. In fact, you can see the
> render
> >> > window for
> >> > a really short period of time before it disappear.
> >> >
> >> > There is no VTK test which covers that issue (create the view for
> >> > vtkRenderWindow), so the dashboard
> >> > probably did not react to the changes. However, we have been using
> that
> >> > code for
> >> > the last months without any problem.
> >> >
> >> > Does anyone knows what is the cause of that problem. If so, is there
> a
> >> > way to solve it?
> >> >
> >> > We are testing on Mac OSX 10.5.
> >> >
> >> > Thanks!
> >> >
> >> > --
> >> >
> >> ____________________________________________________________
> >> > Mathieu Coursolle                   mcoursolle at rogue-research.com
> >> > Rogue Research                      www.rogue-research.com
> >> > Montréal, Québec, Canada
> >> >
> >> >
> >> > _______________________________________________
> >> > vtk-developers mailing list
> >> > vtk-developers at vtk.org
> >> > http://www.vtk.org/mailman/listinfo/vtk-developers
> >> >
> >>
> >>
> >> _______________________________________________
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> >>
> >>
> >
> >
> >--
> >François Bertel, PhD  | Kitware Inc. Suite 204
> >1 (518) 371 3971 x113 | 28 Corporate Drive
> >                      | Clifton Park NY 12065, USA
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