HierarchicalBoxPipeline

VTKExamples/Cxx/CompositeData/HierarchicalBoxPipeline

Description

This example demonstrates how hierarchical box (uniform rectilinear) AMR datasets can be processed using the new vtkHierarchicalBoxDataSet class.

Note

This original source code for this example is here.

Code

HierarchicalBoxPipeline.cxx

// This example demonstrates how hierarchical box (uniform rectilinear)
// AMR datasets can be processed using the new vtkHierarchicalBoxDataSet class.
//
// The command line arguments are:
// -I        => run in interactive mode; unless this is used, the program will
//              not allow interaction and exit
// -D <path> => path to the data; the data should be in <path>/Data/

#include <vtkSmartPointer.h>
#include <vtkCamera.h>
#include <vtkCellDataToPointData.h>
#include <vtkCompositeDataPipeline.h>
#include <vtkContourFilter.h>
#include <vtkExtractLevel.h>
#include <vtkHierarchicalDataSetGeometryFilter.h>
#include <vtkOutlineCornerFilter.h>
#include <vtkHierarchicalPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkShrinkPolyData.h>
#include <vtkXMLHierarchicalBoxDataReader.h>

int main(int argc, char* argv[])
{
  if (argc < 2)
  {
    std::cout << "Usage: " << argv[0] << " file.vtm" << std::endl;
    return EXIT_FAILURE;
  }
  // Standard rendering classes
  vtkSmartPointer<vtkRenderer> ren =
    vtkSmartPointer<vtkRenderer>::New();

  vtkCamera* cam = ren->GetActiveCamera();
  cam->SetPosition(-5.1828, 5.89733, 8.97969);
  cam->SetFocalPoint(14.6491, -2.08677, -8.92362);
  cam->SetViewUp(0.210794, 0.95813, -0.193784);

  vtkSmartPointer<vtkRenderWindow> renWin =
    vtkSmartPointer<vtkRenderWindow>::New();
  renWin->AddRenderer(ren);
  vtkSmartPointer<vtkRenderWindowInteractor> iren =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  iren->SetRenderWindow(renWin);

  vtkSmartPointer<vtkXMLHierarchicalBoxDataReader> reader =
    vtkSmartPointer<vtkXMLHierarchicalBoxDataReader>::New();
  reader->SetFileName(argv[1]);

  // geometry filter
  vtkSmartPointer<vtkHierarchicalDataSetGeometryFilter> geom =
    vtkSmartPointer<vtkHierarchicalDataSetGeometryFilter>::New();
  geom->SetInputConnection(0, reader->GetOutputPort(0));

  vtkSmartPointer<vtkShrinkPolyData> shrink =
    vtkSmartPointer<vtkShrinkPolyData>::New();
  shrink->SetShrinkFactor(0.5);
  shrink->SetInputConnection(0, geom->GetOutputPort(0));

  return EXIT_SUCCESS;

  // // Rendering objects
  // vtkSmartPointer<vtkHierarchicalPolyDataMapper> shMapper =
  //   vtkSmartPointer<vtkHierarchicalPolyDataMapper>::New();
  // shMapper->SetInputConnection(0, shrink->GetOutputPort(0));
  // vtkSmartPointer<vtkActor> shActor =
  //   vtkSmartPointer<vtkActor>::New();
  // shActor->SetMapper(shMapper);
  // shActor->GetProperty()->SetColor(0, 0, 1);
  // ren->AddActor(shActor);

  // // corner outline
  // vtkSmartPointer<vtkOutlineCornerFilter> ocf =
  //   vtkSmartPointer<vtkOutlineCornerFilter>::New();
  // vtkSmartPointer<vtkCompositeDataPipeline> pipeline =
  //   vtkSmartPointer<vtkCompositeDataPipeline>::New();
  // ocf->SetExecutive(pipeline);
  // ocf->SetInputConnection(0, reader->GetOutputPort(0));

  // // Rendering objects
  // // This one is actually just a vtkPolyData so it doesn't need a hierarchical
  // // mapper, but we use this one to test hierarchical mapper with polydata input
  // vtkSmartPointer<vtkHierarchicalPolyDataMapper> ocMapper =
  //   vtkSmartPointer<vtkHierarchicalPolyDataMapper>::New();
  // ocMapper->SetInputConnection(0, ocf->GetOutputPort(0));

  // vtkSmartPointer<vtkActor> ocActor =
  //   vtkSmartPointer<vtkActor>::New();
  // ocActor->SetMapper(ocMapper);
  // ocActor->GetProperty()->SetColor(1, 0, 0);
  // ren->AddActor(ocActor);

  // // cell 2 point and contour
  // vtkSmartPointer<vtkExtractLevel> el =
  //   vtkSmartPointer<vtkExtractLevel>::New();
  // el->SetInputConnection(0, reader->GetOutputPort(0));
  // el->AddLevel(2);

  // vtkSmartPointer<vtkCellDataToPointData> c2p =
  //   vtkSmartPointer<vtkCellDataToPointData>::New();
  // pipeline = vtkCompositeDataPipeline::New();
  // c2p->SetExecutive(pipeline);
  // c2p->SetInputConnection(0, el->GetOutputPort(0));

  // vtkSmartPointer<vtkContourFilter> contour =
  //   vtkSmartPointer<vtkContourFilter>::New();

  // pipeline = vtkCompositeDataPipeline::New();
  // contour->SetExecutive(pipeline);
  // contour->SetInputConnection(0, c2p->GetOutputPort(0));
  // contour->SetValue(0, -0.013);
  // contour->SetInputArrayToProcess(
  //   0,0,0,vtkDataObject::FIELD_ASSOCIATION_POINTS,"phi");

  // // Rendering
  // vtkSmartPointer<vtkHierarchicalPolyDataMapper> contMapper =
  //   vtkSmartPointer<vtkHierarchicalPolyDataMapper>::New();
  // contMapper->SetInputConnection(0, contour->GetOutputPort(0));
  // vtkSmartPointer<vtkActor> contActor =
  //   vtkSmartPointer<vtkActor>::New();

  // contActor->SetMapper(contMapper);
  // contActor->GetProperty()->SetColor(1, 0, 0);
  // ren->AddActor(contActor);

  // ren->SetBackground(1,1,1);
  // renWin->SetSize(300,300);
  // ren->ResetCamera();
  // iren->Start();

  // return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(HierarchicalBoxPipeline)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(HierarchicalBoxPipeline MACOSX_BUNDLE HierarchicalBoxPipeline.cxx )

target_link_libraries(HierarchicalBoxPipeline ${VTK_LIBRARIES})

Download and Build HierarchicalBoxPipeline

Click here to download HierarchicalBoxPipeline and its CMakeLists.txt file. Once the tarball HierarchicalBoxPipeline.tar has been downloaded and extracted,

cd HierarchicalBoxPipeline/build 

If VTK is installed:

cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./HierarchicalBoxPipeline

WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.