IntersectionPolyDataFilter

VTKExamples/Cxx/PolyData/IntersectionPolyDataFilter

Question

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Code

IntersectionPolyDataFilter.cxx

#include <vtkActor.h>
#include <vtkIntersectionPolyDataFilter.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>

int main(int, char *[])
{
  vtkSmartPointer<vtkSphereSource> sphereSource1 = vtkSmartPointer<vtkSphereSource>::New();
  sphereSource1->SetCenter(0.0, 0.0, 0.0);
  sphereSource1->SetRadius(2.0f);
  sphereSource1->Update();
  vtkSmartPointer<vtkPolyDataMapper> sphere1Mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
  sphere1Mapper->SetInputConnection( sphereSource1->GetOutputPort() );
  sphere1Mapper->ScalarVisibilityOff();
  vtkSmartPointer<vtkActor> sphere1Actor = vtkSmartPointer<vtkActor>::New();
  sphere1Actor->SetMapper( sphere1Mapper );
  sphere1Actor->GetProperty()->SetOpacity(.3);
  sphere1Actor->GetProperty()->SetColor(1,0,0);

  vtkSmartPointer<vtkSphereSource> sphereSource2 = vtkSmartPointer<vtkSphereSource>::New();
  sphereSource2->SetCenter(1.0, 0.0, 0.0);
  sphereSource2->SetRadius(2.0f);
  vtkSmartPointer<vtkPolyDataMapper> sphere2Mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
  sphere2Mapper->SetInputConnection( sphereSource2->GetOutputPort() );
  sphere2Mapper->ScalarVisibilityOff();
  vtkSmartPointer<vtkActor> sphere2Actor = vtkSmartPointer<vtkActor>::New();
  sphere2Actor->SetMapper( sphere2Mapper );
  sphere2Actor->GetProperty()->SetOpacity(.3);
  sphere2Actor->GetProperty()->SetColor(0,1,0);

  vtkSmartPointer<vtkIntersectionPolyDataFilter> intersectionPolyDataFilter =
    vtkSmartPointer<vtkIntersectionPolyDataFilter>::New();
  intersectionPolyDataFilter->SetInputConnection( 0, sphereSource1->GetOutputPort() );
  intersectionPolyDataFilter->SetInputConnection( 1, sphereSource2->GetOutputPort() );
  intersectionPolyDataFilter->Update();

  vtkSmartPointer<vtkPolyDataMapper> intersectionMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
  intersectionMapper->SetInputConnection( intersectionPolyDataFilter->GetOutputPort() );
  intersectionMapper->ScalarVisibilityOff();

  vtkSmartPointer<vtkActor> intersectionActor = vtkSmartPointer<vtkActor>::New();
  intersectionActor->SetMapper( intersectionMapper );

  vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
  renderer->AddViewProp(sphere1Actor);
  renderer->AddViewProp(sphere2Actor);
  renderer->AddViewProp(intersectionActor);

  vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer( renderer );

  vtkSmartPointer<vtkRenderWindowInteractor> renWinInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renWinInteractor->SetRenderWindow( renderWindow );

  renderWindow->Render();
  renWinInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(IntersectionPolyDataFilter)

find_package(VTK COMPONENTS 
  vtkCommonCore
  vtkFiltersGeneral
  vtkFiltersSources
  vtkInteractionStyle
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
  message("Skipping IntersectionPolyDataFilter: ${VTK_NOT_FOUND_MESSAGE}")
  return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
  # old system
  include(${VTK_USE_FILE})
  add_executable(IntersectionPolyDataFilter MACOSX_BUNDLE IntersectionPolyDataFilter.cxx )
  target_link_libraries(IntersectionPolyDataFilter PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(IntersectionPolyDataFilter MACOSX_BUNDLE IntersectionPolyDataFilter.cxx )
  target_link_libraries(IntersectionPolyDataFilter PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS IntersectionPolyDataFilter
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build IntersectionPolyDataFilter

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

cd IntersectionPolyDataFilter/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:

./IntersectionPolyDataFilter

WINDOWS USERS

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