[vtkusers] .NET 2003 + vtkRectilinearGridToPolyDataFilter

Wed Apr 27 03:13:06 EDT 2005

Hello again, 

following the inheritance diagram for the "vtkRectilinearGridToPolyDataFilter" the header include every necessary file. Otherwise why should the program know from "vtkAlgorithm" and report the error conversion between these types are not possible ?

Could it be a bug ? Or simply a different type of instanciation ?

Regards Winn

"Paul Tait - OPES" <Paul at opes.com.au> schrieb am 27.04.05 05:38:23:

Probably you need to include the header file

-----Original Message-----
From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
Behalf Of Winfried Bilgic
Sent: Wednesday, 27 April 2005 4:56 AM
To: vtkusers at vtk.org
Subject: [vtkusers] .NET 2003 + vtkRectilinearGridToPolyDataFilter

Hello VtkUsers, 

sorry for that simple question, i'm new to vtk. I'm trying to extract
PolyData from the RectilinearGrid without any success. For that task i
took the "RGrid.cxx" example and added the line:

Line(72):: vtkRectilinearGridToPolyDataFilter *MyRectPolyData =
vtkRectilinearGridToPolyDataFilter::New();

ended in compile error:

RGrid.cxx(72): error C2440: 'Initialisierung': 'vtkAlgorithm *' cannot
converted into 'vtkRectilinearGridToPolyDataFilter *' 

Any idea or hint is apperciated, 

Regards Winn

####################################
#### Complete Source file
####################################

#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkFloatArray.h"
#include "vtkRectilinearGrid.h"
#include "vtkRectilinearGridToPolyDataFilter.h"
#include "vtkRectilinearGridGeometryFilter.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkProperty.h"
#include "vtkCamera.h"

int main( int argc, char *argv[] )
{
  unsigned int i;
  double x[47]={
         -1.22396, -1.17188, -1.11979, -1.06771, -1.01562, -0.963542, 
         -0.911458, -0.859375, -0.807292, -0.755208, -0.703125,
-0.651042, 
         -0.598958, -0.546875, -0.494792, -0.442708, -0.390625,
-0.338542, 
         -0.286458, -0.234375, -0.182292, -0.130209, -0.078125,
-0.026042, 
          0.0260415, 0.078125, 0.130208, 0.182291, 0.234375, 0.286458, 
          0.338542, 0.390625, 0.442708, 0.494792, 0.546875, 0.598958, 
          0.651042, 0.703125, 0.755208, 0.807292, 0.859375, 0.911458, 
          0.963542, 1.01562, 1.06771, 1.11979, 1.17188};
  double y[33]={-1.25, -1.17188, -1.09375, -1.01562, -0.9375, -0.859375,

         -0.78125, -0.703125, -0.625, -0.546875, -0.46875, -0.390625, 
         -0.3125, -0.234375, -0.15625, -0.078125, 0, 0.078125, 
          0.15625, 0.234375, 0.3125, 0.390625, 0.46875, 0.546875, 
          0.625, 0.703125, 0.78125, 0.859375, 0.9375, 1.01562, 
          1.09375, 1.17188, 1.25};
  double z[44]={0, 0.1, 0.2, 0.3, 0.4, 0.5, 
         0.6, 0.7, 0.75, 0.8, 0.9, 1, 
         1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 
         1.7, 1.75, 1.8, 1.9, 2, 2.1, 
         2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 
         2.75, 2.8, 2.9, 3, 3.1, 3.2, 
         3.3, 3.4, 3.5, 3.6, 3.7, 3.75, 
         3.8, 3.9};

  vtkFloatArray *xCoords = vtkFloatArray::New();
  vtkFloatArray *yCoords = vtkFloatArray::New();
  vtkFloatArray *zCoords = vtkFloatArray::New();

  for (i=0; i<47; i++) xCoords->InsertNextValue(x[i]);
  for (i=0; i<33; i++) yCoords->InsertNextValue(y[i]);
  for (i=0; i<44; i++) zCoords->InsertNextValue(z[i]);

  vtkRectilinearGrid *rgrid = vtkRectilinearGrid::New();
    rgrid->SetDimensions(47,33,47);
    rgrid->SetXCoordinates(xCoords);
    rgrid->SetYCoordinates(yCoords);
    rgrid->SetZCoordinates(zCoords);

  // ******************************
  vtkRectilinearGridToPolyDataFilter *MyRectPolyData =
vtkRectilinearGridToPolyDataFilter::New();
    MyRectPolyData->SetInput(rgrid);
  // ******************************

    // Extract a plane from the grid to see what we've got.
  vtkRectilinearGridGeometryFilter *plane =
vtkRectilinearGridGeometryFilter::New();
    plane->SetInput(rgrid);
    plane->SetExtent(0,46, 16,16, 0,43);

  vtkPolyDataMapper *rgridMapper = vtkPolyDataMapper::New();
      rgridMapper->SetInput(plane->GetOutput());

  vtkActor *wireActor = vtkActor::New();
      wireActor->SetMapper(rgridMapper);
      wireActor->GetProperty()->SetRepresentationToWireframe();
      wireActor->GetProperty()->SetColor(0,0,0);

  // Create the usual rendering stuff.
  vtkRenderer *renderer = vtkRenderer::New();
  vtkRenderWindow *renWin = vtkRenderWindow::New();
    renWin->AddRenderer(renderer);
  vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
    iren->SetRenderWindow(renWin);

  renderer->AddActor(wireActor);
  renderer->SetBackground(1,1,1);
  renderer->GetActiveCamera()->Elevation(60.0);
  renderer->GetActiveCamera()->Azimuth(30.0);
  renderer->GetActiveCamera()->Zoom(1.0);

  renWin->SetSize(300,300);

  // interact with data
  renWin->Render();
  iren->Start();

  // Clean up
  renderer->Delete();
  renWin->Delete();
  iren->Delete();
  xCoords->Delete();
  yCoords->Delete();
  zCoords->Delete();
  rgrid->Delete();
  rgridMapper->Delete();
  wireActor->Delete();

  return 0;
}

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