[vtkusers] VTK+Qt on ubuntu 9.10

[ruben.hernando.vaca at upc.edu]

Hi Jothi

Thanks!!!!! the problem is solve but :( the color appears one second  
(in this case red color ) and later it disappears again.

MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::MainWindow)
{
     ui->setupUi(this);
     vtkWidget = new QVTKWidget(this,QFlag(0));
     ui->verticalLayout->addWidget(vtkWidget);
     ui->verticalLayout->update();
     ren = vtkRenderer::New();


     vtkWidget->GetRenderWindow()->AddRenderer(ren);


      ren->SetBackground(1.0,0.0,0.0);
      vtkWidget->repaint();
  }

I need repaint the vtkWidget in a loop without addRenderer.

Thanks for all

Ruben



Quoting "David Doria" <daviddoria+vtk at gmail.com>:

> On Thu, Aug 5, 2010 at 7:46 AM,  <ruben.hernando.vaca at upc.edu> wrote:
>> Hi Jothy
>>
>> renderer? this is a variable "ren":
>>
>> in my .h i have:
>>
>>   QVTKWidget* vtkWidget;
>>   vtkRenderer* ren;
>>
>> and .cpp
>>
>>    ren->Render();
>>
>> I don't understand.
>>
>> Thanks for all
>>
>> ruben
>>
>>
>>
>>
>>
>> Quoting Jothy <jothybasu at gmail.com>:
>>
>>> I think you should call renderWindow->Render() not renderer->Render();
>>>
>>> It works fine on my m/c with the same setup (vtk+qt+qtcreator).
>>>
>>> Jothy
>>>
>>> On Thu, Aug 5, 2010 at 12:18 PM, <ruben.hernando.vaca at upc.edu> wrote:
>>>
>>>> Hi,
>>>>
>>>> Well, this is my problem when I debut on QT + VTK + QTCREATOR:
>>>>
>>>> MainWindow::MainWindow(QWidget *parent) :
>>>>   QMainWindow(parent),
>>>>   ui(new Ui::MainWindow)
>>>> {
>>>>   ui->setupUi(this);
>>>>   vtkWidget = new QVTKWidget(this,QFlag(0));
>>>>   ui->verticalLayout->addWidget(vtkWidget);
>>>>   ui->verticalLayout->update();
>>>>   ren = vtkRenderer::New();
>>>>   vtkWidget->GetRenderWindow()->AddRenderer(ren);
>>>>   ren->SetBackground(1.0,1.0,1.0);
>>>>   ren->Render();----------------------->PROBLEM!!!! -->>>The inferior
>>>> stopped   because it received a signal from the Operating    System.
>>>> Signal
>>>> name : SIGSEGV - Signal meaning : Segmentation fault
>>>>
>>>> }
>>>>
>>>> When I debut, with Qtcreator everything is ok until the instrucction
>>>> ren->Render() is executed and have the message: The inferior   stopped
>>>> because it received a signal from the Operating System. Signal name :
>>>> SIGSEGV - Signal meaning : Segmentation fault.
>>>>
>>>> I have the same message when at the command line i use qmake, make....
>>>>
>>>> My Desktop PC  has: Ati X1300, the openGL runs so good and the qtdemo is
>>>> ok.
>>>>
>>>> On the other hand I have laptop HP with the same S.O ubuntu 9.10 and run
>>>> QT+VTK+QTCreator, the different thing is the Card which is the NVIDIA,
>>>> but i
>>>> don't thing so it would be that because the openGl runs so good in my
>>>> Desktop PC.
>>>>
>>>> Another things is that in the Desktop PC I display two monitors in
>>>> dual-mode thats mean that the graphic card configuration is good.
>>>>
>>>> What happened?? I know, there are three topics QT,VTK and linux but I so
>>>> sure the problem is VTK.
>>>>
>>>> Thanks for all
>>>>
>>>> Ruben.
>>>>
>>>>
>>>>
>>>>
>>
>
> In this context it would be
>
>  vtkWidget->GetRenderWindow()->Render();
>
> Thanks,
>
> David
>