[vtkusers] vtkusers Digest, Vol 51, Issue 23

[Li Ganhua]

Hi, Every one,
    I have read a data set with Plot3D format. But after I change the value
of the dataset, I cannot update the 3D modle in the render windows. How can
I update the model in the render window? Please help me!



Best regards,
Edward Li

    My code is as shown as below:


#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkFloatArray.h"
#include "vtkRectilinearGrid.h"
#include "vtkRectilinearGridGeometryFilter.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkProperty.h"
#include "vtkCamera.h"
#include "vtkPlot3DReader.h"
#include "vtkStructuredGrid.h"
#include "vtkContourFilter.h"
#include "vtkPolyDataNormals.h"
#include "vtkPolyDataMapper.h"
#include "vtkLODActor.h"
#include "vtkDataArray.h"
#include "vtkPointData.h"

#include "vtkStructuredGridOutlineFilter.h"
#include "vtkActor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkScalarBarActor.h"
int main()
{
 vtkPLOT3DReader *pl3d = vtkPLOT3DReader::New();
 pl3d->BinaryFileOn();

 pl3d->SetXYZFileName("combxyz.bin");
 pl3d->SetQFileName("combq.bin");
 pl3d->SetScalarFunctionNumber(100);
        pl3d->SetVectorFunctionNumber(202);
 pl3d->AddFunction(153);
 pl3d->Update();
 pl3d->DebugOn();

 vtkStructuredGrid* output=pl3d->GetOutput();

 vtkContourFilter* iso=vtkContourFilter::New();
 iso->SetInput(output);
 iso->SetValue(1,0.24);


 vtkPolyDataNormals* normals=vtkPolyDataNormals::New();
 normals->SetInput(iso->GetOutput());
 normals->SetFeatureAngle( 45);

 vtkPolyDataMapper* isoMapper=vtkPolyDataMapper::New();
 isoMapper->SetInput(normals->GetOutput());
 isoMapper->ScalarVisibilityOn();
 isoMapper->SetScalarRange(0, 1500);
 isoMapper->SetScalarModeToUsePointFieldData();
 isoMapper->ColorByArrayComponent(2, 0);

 vtkLODActor* isoActor=vtkLODActor::New();
 isoActor->SetMapper(isoMapper);
 isoActor->SetNumberOfCloudPoints(1000);
 isoActor->GetProperty()->SetRepresentation(1);

 vtkStructuredGridOutlineFilter*
outline=vtkStructuredGridOutlineFilter::New();
 outline->SetInput(pl3d->GetOutput());

 vtkPolyDataMapper* outlineMapper=vtkPolyDataMapper::New();;
 outlineMapper->SetInput(outline->GetOutput());

 vtkActor* outlineActor=vtkActor::New();
 outlineActor->SetMapper(outlineMapper);


 vtkRenderer* ren1=vtkRenderer::New();

 vtkRenderWindow* renWin=vtkRenderWindow::New();
 renWin->AddRenderer(ren1);

 vtkRenderWindowInteractor* iren=vtkRenderWindowInteractor::New();
 iren->SetRenderWindow(renWin);

 ren1->AddActor(outlineActor);
 ren1->AddActor(isoActor);
 ren1->SetBackground(1, 1, 1);
 renWin->SetSize(500, 500);
 ren1->SetBackground(0.1, 0.2, 0.4);

        ren1->GetActiveCamera()->SetClippingRange(3.95297,50);
        ren1->GetActiveCamera()->SetFocalPoint(9.71821, 0.458166, 29.3999);
        ren1->GetActiveCamera()->SetPosition(2.7439, -37.3196, 38.7167);
 ren1->GetActiveCamera()->SetViewUp(-0.16123, 0.264271, 0.950876);

 int tupleMin,tupleMax,compMin,compmax;
 vtkPoints  *pd=output->GetPoints();


 renWin->Render();
        double temp;
 int tumpleNum=pd->GetNumberOfPoints();

 double x[3];
 for(int j=0;j<100;j++)
 {
  for(int i=0;i<tumpleNum/5;i++)
  {
   pd->GetPoint(i,x);
   x[0]=x[0]+10;
   pd->SetPoint(i,x);

  }

  int debug=1;
  output->Update();
  output->UpdateData();
  renWin->Render();

 }

    iren->Start();


    ren1->Delete();
    renWin->Delete();
    outlineActor->Delete();
    outlineMapper->Delete();
    outline->Delete();
    isoActor->Delete();
    isoMapper->Delete();
    normals->Delete();
    iso->Delete();
    pl3d->Delete();
}
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