[vtkusers] Example VTK with Qt

[agatte]

agatteHi All ;)


I have a question concerning example vtk with qt.
I am trying to extend and modify example  RenderWindowUISingleInheritance
from VTK WIKI
I want to load file with mesh (*.vtp) , display mesh and save  mesh in
file(as  *.vtp).
I have alredy display mesh.
I have created 2 push buttons open and save.
But I have a problem with read mesh from vtp file and save.
Could anyone help me please ?

I have principally problem with open/load file and save it.

I attach my code :
#include "ui_SimpleViewUI.h"
#include "SimpleViewUI.h"
 
#include <vtkPolyDataMapper.h>
#include <vtkRenderer.h>
#include <vtkPolyData.h>
#include <vtkRenderWindow.h>
#include <vtkSphereSource.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkXMLPolyDataWriter.h>
#include "vtkSmartPointer.h"

#include <QString>
#include <QFileDialog>
#include <QMessageBox>
#include <QFile>
 
// Constructor
SimpleView::SimpleView() 
{
  this->ui = new Ui_SimpleView;
  this->ui->setupUi(this);

   


  //std::string filename = "outputMeshXML.vtp";
  //vtkSmartPointer<vtkXMLPolyDataReader> reader =
vtkSmartPointer<vtkXMLPolyDataReader>::New();
  //reader->SetFileName(filename.c_str());
  //reader->Update();

 vtkXMLPolyDataReader* reader = vtkXMLPolyDataReader::New();

  vtkPolyData* polydata = vtkPolyData::New();
  polydata = reader->GetOutput();

  vtkSmartPointer<vtkPolyDataMapper> mapper =
      vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInput(polydata);
  vtkSmartPointer<vtkActor> actor = 
      vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
 
  // VTK Renderer
  vtkSmartPointer<vtkRenderer> renderer = 
      vtkSmartPointer<vtkRenderer>::New();
  renderer->AddActor(actor);
 
  // VTK/Qt wedded
 this->ui->qvtkWidget->GetRenderWindow()->AddRenderer(renderer);
 
  // Set up action signals and slots
  connect(this->ui->actionExit, SIGNAL(triggered()), this,
SLOT(slotExit()));
  connect(this->ui->openButton, SIGNAL(clicked()), this, SLOT(openFile()));
  connect(this->ui->saveButton, SIGNAL(clicked()), this, SLOT(saveFile()));
  

 
 
};
 
void SimpleView::slotExit() 
{
  qApp->exit();
}

void SimpleView::openFile()
{

	 QString fileName = QFileDialog::getOpenFileName(this,
         tr("Open  file with model/mesh"), "",
         tr("files (*.vtp);;All Files (*)"));

     if (fileName.isEmpty())
         return;
     else {

         QFile file(fileName);

         if (!file.open(QIODevice::ReadOnly)) {
             QMessageBox::information(this, tr("Unable to open file"),
                 file.errorString());
             return;
         }

        QDataStream in(&file);
        in.setVersion(QDataStream::Qt_4_5);

		const char* filename = fileName.toStdString().c_str();
	    vtkXMLPolyDataReader* reader = vtkXMLPolyDataReader::New();
        reader->SetFileName(filename);
        reader->Update();

		vtkPolyData* polyadata = reader->GetOutput();


		//reader->Delete();
}
}

void SimpleView::saveFile()
{
	// std::cout <<" save  file "<<std::endl;

	 QString fileName = QFileDialog::getSaveFileName(this, tr(&quot;Save
File&quot;),
                            &quot;Save mesh/ model in .vtp file &quot;,
                            tr(&quot;Images/models (*.vtp)&quot;));

	  if (fileName.isEmpty())
         return;
     else {
         QFile file(fileName);
         if (!file.open(QIODevice::WriteOnly)) {
             QMessageBox::information(this, tr(&quot;Unable to open
file&quot;),
                 file.errorString());
             return;
         }

         QDataStream out(&amp;file);
         out.setVersion(QDataStream::Qt_4_5);

		const char* filename2 = fileName.toStdString().c_str();
	    vtkXMLPolyDataWriter* writer = vtkXMLPolyDataWriter::New();
		writer->SetInput(polydata);
        writer->SetFileName(filename2);
        writer->Write();


		//writer->Delete();
		//polydata->Delete();
	    
	 }
}


SimpleView::~SimpleView()
{
	

}



--
View this message in context: http://vtk.1045678.n5.nabble.com/Example-VTK-with-Qt-tp5715374.html
Sent from the VTK - Users mailing list archive at Nabble.com.