[vtkusers] Re: Text problems with GL2PS

[Goodwin Lawlor]

Hi Joe,

Your text and renderer background are both white... so you can't see the
text.

Insert into  your code:

vtext->SetColor(1,0,1);

... and your code outputs visible text in the postscript file.
txt_actor->GetProperty ()->SetColor (1, 0, 1); wont change the text color

hth

Goodwin

"Joe Miller" <lpe540 at yahoo.com> wrote in message
news:20041104203654.50846.qmail at web50007.mail.yahoo.com...
> Hi,
>
> I have simple program that creates a plane and line of
> 2d text. All my actors are 2d. However, when I try to
> export the image to postscript using vtkGL2PSExporter,
> the text never shows up in the postscript file. If I
> don't add the plane to the renderer the text appears
> just fine. I've tried playing with the different gl2ps
> flags. I've also tried setting the visibility of plane
> to off. Everything appears on the window just fine but
> no text in the postscript. I was wondering if anyones
> run across this before or had any suggestions. I'm
> using vtk version 4.3. I've included my program below
> I apologize if it makes this a very long email.
>
> Thanks in advance.
>
> -joe
>
> int main ()
> {
>
>     vtkPoints *pts = vtkPoints::New ();
>    pts->SetNumberOfPoints (4);
>    pts->InsertPoint (0, 0, 0, 0);
>    pts->InsertPoint (1, 0, 100, 0);
>    pts->InsertPoint (2, 100, 100, 0);
>    pts->InsertPoint (3, 100, 0, 0);
>
>    vtkCellArray *arr = vtkCellArray::New ();
>    arr->InsertNextCell (4);
>    arr->InsertCellPoint (0); arr->InsertCellPoint (1);
>    arr->InsertCellPoint (2); arr->InsertCellPoint (3);
>
>    vtkPolyData *plane_data = vtkPolyData::New ();
>
>    plane_data->SetPoints (pts);
>    plane_data->SetPolys (arr);
>
>    vtkPolyDataMapper2D *mapper =
> vtkPolyDataMapper2D::New ();
>    mapper->SetInput (plane_data);
>
>    vtkActor2D *plane = vtkActor2D::New ();
>    plane->SetMapper (mapper);
>
>    plane->GetProperty ()->SetColor (1, 1, 0);
>    plane->SetPosition (0, 0);
>
>    pts->Delete ();
>    arr->Delete ();
>    mapper->Delete ();
>
>    vtkTextProperty *vtext = vtkTextProperty::New();
>    vtext->SetBold(1);
>    vtext->SetItalic(1);
>    vtext->SetShadow(0);
>    vtext->SetFontFamilyToArial();
>
>    vtkTextMapper *txt_mapper = vtkTextMapper::New();
>    vtkActor2D *txt_actor = vtkActor2D::New();
>    txt_actor->SetMapper(txt_mapper);
>    txt_mapper->SetInput ("test");
>    txt_mapper->GetTextProperty()->ShallowCopy(vtext);
>    txt_actor->GetProperty ()->SetColor (1, 0, 1);
>    txt_actor->SetPosition (150, 55);
>
>
>     vtkRenderer *ren1 = vtkRenderer::New ();
>     vtkRenderWindow *renWin = vtkRenderWindow::New ();
>     renWin->AddRenderer (ren1);
>     renWin->SetSize (300, 300);
>
>     vtkRenderWindowInteractor *iren =
> vtkRenderWindowInteractor::New ();
>     iren->SetRenderWindow (renWin);
> ren1->SetBackground (1, 1, 1);
>
>     ren1->AddActor (txt_actor);
>     ren1->AddActor (plane);
>
>     renWin->Render ();
>     vtkGL2PSExporter *psExporter =
> vtkGL2PSExporter::New();
>       psExporter->SetRenderWindow(renWin);
>       psExporter->SetFileFormatToPS();
>       psExporter->TextOn();
>       psExporter->SetWrite3DPropsAsRasterImage(0);
>       psExporter->SetFilePrefix("tmp");
>       psExporter->Write();
>       psExporter->Delete();
>
>     iren->Initialize ();
>
> }
>
>
>
>
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