[vtkusers] Bug in vtkTextActor for accentuated characters?

[pof]

  Hi Roger,
I applied your patch to vtk5.6.0, and this fully solve the shadow 
problem, great!
Still I 've got this problem with accuentuated characters (which of 
course was your patch was aiming to solve). If I understand well your 
reponse, this is already solved in the dev branch, am I correct?
Pof

Le 06/09/2010 08:52, Roger Bramon Feixas a écrit :
> Hi Pof,
>
> Since VTK 5.2.0, vtkTextActor is rendered using glyphs instead of 
> OpenGL. I also had that problem but it was solved in that commit 
> http://vtk.org/gitweb?p=VTK.git;a=commit;h=331a44656276882766248c1f8e338434b40226ef 
> when UTF8 text rendering was enabled. It's after VTK 5.6 was released.
>
> On the other hand, I suppose you still have problems rendering text 
> with shadow, as you reported in that issue: 
> http://vtk.org/Bug/view.php?id=9618. I tried to solve it and I 
> attached a patch in that issue waiting for feedback. It would be 
> wonder if you could test it and let me know if it works well.
>
> Thanks,
>
> Roger
>
>
> On Fri, Sep 3, 2010 at 2:12 PM, Pof <jd379252 at gmail.com 
> <mailto:jd379252 at gmail.com>> wrote:
>
>     Hi all,
>
>     I am having trouble displaying accentuated characters in
>     vtkTextActor with vtk5.6.0 under MS-VC++2005.
>     Here below is an exemple that reproduces the problem, by printing
>     the same string than contains accents "é,è,à".
>     When I run this small prog, as a result I obtain that accentuated
>     characters (é,è...) are :
>     - correctly displayed when used in a vtkScalarBarActor title,
>     - not displayed when incorporated in vtkTextActor.
>
>     Any idea where does this come from and how to solve it?
>
>     As an additional comment, this used to work correctly under
>     vtk5.0.x, it is only broken from vtk5.2.x up to vtk5.6.0.
>
>     Thanks
>     JD
>
>
>     //////////////////////////////////////////////////////
>     ////////////////// vtkTextActor bug //////////////////
>     //////////////////////////////////////////////////////
>     #include "vtkActor.h"
>     #include "vtkRenderer.h"
>     #include "vtkRenderWindow.h"
>     #include "vtkRenderWindowInteractor.h"
>     #include "vtkCamera.h"
>     #include "vtkTextProperty.h"
>     #include "vtkTextActor.h"
>     #include "vtkActor2D.h"
>     #include "vtkLookupTable.h"
>     #include "vtkScalarBarActor.h"
>
>     int main()
>     {
>         // Tested string
>         char text[] = "Test: é, è, à";
>
>         // Create an example text actor
>         vtkTextActor *textActor = vtkTextActor::New();
>         textActor->SetInput(text);
>        
>     textActor->GetPositionCoordinate()->SetCoordinateSystemToNormalizedViewport();
>         textActor->SetPosition(0.50,0.50);
>         textActor->GetTextProperty()->SetFontSize(30);
>         textActor->GetTextProperty()->SetJustificationToCentered();
>         textActor->GetTextProperty()->SetColor(1, 0, 0);
>
>         // Create a Lut
>         vtkLookupTable *Lut = vtkLookupTable::New();
>         Lut->SetHueRange (160.0/240.0, 0.0);
>         Lut->SetSaturationRange (1.0, 1.0);
>         Lut->SetValueRange (1.0, 1.0);
>         Lut->SetTableRange (0,100);
>         Lut->Build();
>
>         // Create a ScalarBarActor
>         vtkScalarBarActor *scalarBar = vtkScalarBarActor::New();
>         scalarBar->SetTitle(text);
>         scalarBar->SetLookupTable(Lut);
>         scalarBar->SetHeight(0.5);
>         scalarBar->SetWidth(0.1);
>         scalarBar->SetPosition(0.10,0.01);
>         scalarBar->SetPosition2(0.80,0.1);
>         scalarBar->SetOrientationToHorizontal();
>
>         // Create the graphics structure
>         vtkRenderer *ren = vtkRenderer::New();
>         vtkRenderWindow *renWin = vtkRenderWindow::New();
>         renWin->AddRenderer(ren);
>         renWin->SetSize(600, 600);
>         vtkRenderWindowInteractor *iren =
>     vtkRenderWindowInteractor::New();
>         iren->SetRenderWindow(renWin);
>
>         // Add the actors to the renderer, set the background and size
>         ren->AddActor(textActor);
>         ren->AddActor(scalarBar);
>         ren->SetBackground(0.1, 0.2, 0.4);
>         ren->ResetCamera();
>         ren->GetActiveCamera()->Zoom(1.0);
>         renWin->Render();
>
>         // Starts the event loop
>         iren->Start();
>
>         // Do some cleaning
>         textActor->Delete();
>         Lut->Delete();
>         scalarBar->Delete();
>         ren->Delete();
>         renWin->Delete();
>         iren->Delete();
>
>         return 0;
>     }
>
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