VTK/Examples/Cxx/PolyData/ReverseSense

From KitwarePublic

Jump to: navigation, search

ReverseSense.cxx

#include <vtkSmartPointer.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkPointData.h>
#include <vtkReverseSense.h>
#include <vtkFloatArray.h>
 
int main(int, char *[])
{
  vtkSmartPointer<vtkSphereSource> sphereSource = 
    vtkSmartPointer<vtkSphereSource>::New();
  sphereSource->Update();
 
  vtkSmartPointer<vtkFloatArray> pointNormals = 
    vtkFloatArray::SafeDownCast(sphereSource->GetOutput()->GetPointData()->GetNormals());
 
  std::cout << std::endl << "Normals: " << std::endl;
  // Display the first few normals
  for(unsigned int i = 0; i < 5; i++)
    {
    double pN[3];
    pointNormals->GetTuple(i, pN);
    std::cout << "Point normal " << i << ": " << pN[0] << " " << pN[1] << " " << pN[2] << std::endl;
    }
 
  vtkSmartPointer<vtkReverseSense> reverseSense = 
    vtkSmartPointer<vtkReverseSense>::New();
  reverseSense->SetInputConnection(sphereSource->GetOutputPort());
  reverseSense->ReverseNormalsOn();
  reverseSense->Update();
 
 
  vtkSmartPointer<vtkFloatArray> reversedNormals = 
    vtkFloatArray::SafeDownCast(reverseSense->GetOutput()->GetPointData()->GetNormals());
 
  std::cout << std::endl << "Reversed: " << std::endl;
  // Display the first few normals to verify that they are flipped
  for(unsigned int i = 0; i < 5; i++)
    {
    double pN[3];
    reversedNormals->GetTuple(i, pN);
    std::cout << "Reversed normal " << i << ": " << pN[0] << " " << pN[1] << " " << pN[2] << std::endl;
    }
 
  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
 
PROJECT(ReverseSense)
 
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
 
add_executable(ReverseSense ReverseSense.cxx)
 
if(VTK_LIBRARIES)
  target_link_libraries(ReverseSense ${VTK_LIBRARIES})
else()
  target_link_libraries(ReverseSense vtkHybrid )
endif()
Retrieved from "http://batchmake.org/Wiki/VTK/Examples/Cxx/PolyData/ReverseSense"
Personal tools