VTK/Examples/Cxx/PolyData/MultiBlockMergeFilter

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MultiBlockMergeFilter.cxx

#include <vtkVersion.h>
#include <vtkSmartPointer.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkMultiBlockMergeFilter.h>
#include <vtkMultiBlockDataSet.h>

int main(int, char *[])
{

  vtkSmartPointer<vtkSphereSource> sphereSource1 =
    vtkSmartPointer<vtkSphereSource>::New();
  sphereSource1->Update();
  
  vtkSmartPointer<vtkSphereSource> sphereSource2 =
    vtkSmartPointer<vtkSphereSource>::New();
  sphereSource2->SetCenter(10,10,10);
  sphereSource2->Update();

  vtkSmartPointer<vtkMultiBlockDataSet> multiBlockDataSet1 =
    vtkSmartPointer<vtkMultiBlockDataSet>::New();
  multiBlockDataSet1->SetNumberOfBlocks(1);
  multiBlockDataSet1->SetBlock(0, sphereSource1->GetOutput());
#if VTK_MAJOR_VERSION <= 5
  multiBlockDataSet1->Update();
#endif

  vtkSmartPointer<vtkMultiBlockDataSet> multiBlockDataSet2 =
    vtkSmartPointer<vtkMultiBlockDataSet>::New();
  multiBlockDataSet2->SetNumberOfBlocks(1);
  multiBlockDataSet2->SetBlock(0, sphereSource2->GetOutput());
#if VTK_MAJOR_VERSION <= 5
  multiBlockDataSet2->Update();
#endif
  
  vtkSmartPointer<vtkMultiBlockMergeFilter> multiBlockMergeFilter =
      vtkSmartPointer<vtkMultiBlockMergeFilter>::New();
#if VTK_MAJOR_VERSION <= 5
  multiBlockMergeFilter->AddInput(multiBlockDataSet1);
  multiBlockMergeFilter->AddInput(multiBlockDataSet2);
#else
  multiBlockMergeFilter->AddInputData(multiBlockDataSet1);
  multiBlockMergeFilter->AddInputData(multiBlockDataSet2);
#endif
  multiBlockMergeFilter->Update();
  
  return EXIT_SUCCESS;
}


Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(MultiBlockMergeFilter)

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

add_executable(MultiBlockMergeFilter MACOSX_BUNDLE MultiBlockMergeFilter.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(MultiBlockMergeFilter ${VTK_LIBRARIES})
else()
  target_link_libraries(MultiBlockMergeFilter vtkHybrid vtkWidgets)
endif()

Download and Build MultiBlockMergeFilter

Click here to download MultiBlockMergeFilter. and its CMakeLists.txt file.

Once the tarball MultiBlockMergeFilter.tar has been downloaded and extracted,

cd MultiBlockMergeFilter/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:

./MultiBlockMergeFilter

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.