PlanesIntersection

#include <vtkNew.h>
#include <vtkPlanesIntersection.h>
#include <vtkPoints.h>
#include <vtkSphereSource.h>

int main(int, char*[])
{
  vtkNew<vtkSphereSource> sphereSource;
  sphereSource->Update();

  double bounds[6];
  sphereSource->GetOutput()->GetBounds(bounds);

  vtkNew<vtkPoints> box;

  box->SetNumberOfPoints(8);

  double xMin, xMax, yMin, yMax, zMin, zMax;
  xMin = bounds[0];
  xMax = bounds[1];
  yMin = bounds[2];
  yMax = bounds[3];
  zMin = bounds[4];
  zMax = bounds[5];

  box->SetPoint(0, xMax, yMin, zMax);
  box->SetPoint(1, xMax, yMin, zMin);
  box->SetPoint(2, xMax, yMax, zMin);
  box->SetPoint(3, xMax, yMax, zMax);
  box->SetPoint(4, xMin, yMin, zMax);
  box->SetPoint(5, xMin, yMin, zMin);
  box->SetPoint(6, xMin, yMax, zMin);
  box->SetPoint(7, xMin, yMax, zMax);

  vtkNew<vtkPlanesIntersection> planesIntersection;
  planesIntersection->SetBounds(bounds);

  int intersects = planesIntersection->IntersectsRegion(box);
  auto res = (intersects == 1) ? "Yes" : "No";

  std::cout << "Intersects? " << res << std::endl;

  return EXIT_SUCCESS;
}

cmake_minimum_required(VERSION 3.12 FATAL_ERROR)

project(PlanesIntersection)

find_package(VTK COMPONENTS 
  vtkCommonCore
  vtkCommonDataModel
  vtkFiltersSources
  QUIET
)

if (NOT VTK_FOUND)
  message("Skipping PlanesIntersection: ${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(PlanesIntersection MACOSX_BUNDLE PlanesIntersection.cxx )
  target_link_libraries(PlanesIntersection PRIVATE ${VTK_LIBRARIES})
else()
  # Prevent a "command line is too long" failure in Windows.
  set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
  add_executable(PlanesIntersection MACOSX_BUNDLE PlanesIntersection.cxx )
  target_link_libraries(PlanesIntersection PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS PlanesIntersection
    MODULES ${VTK_LIBRARIES}
    )
endif()

cd PlanesIntersection/build

cmake ..

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

make

./PlanesIntersection