VTK/Examples/Cxx/PolyData/EmbedPointsIntoVolume

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VTK Examples Baseline PolyData TestEmbedPointsIntoVolume.png

EmbedPointsIntoVolume.cxx

#include <vtkVersion.h>
#include <vtkPolyData.h>
#include <vtkImageData.h>
#include <vtkSmartPointer.h>
#include <vtkXMLPolyDataReader.h>
#include <vtkXMLImageDataWriter.h>
#include <vtkGaussianSplatter.h>
#include <vtkSphereSource.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkContourFilter.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkProperty.h>

int main(int argc, char *argv[])
{
  vtkSmartPointer<vtkPolyData> input =
    vtkSmartPointer<vtkPolyData>::New();

  if(argc == 1) // Generate the data
    {
    vtkSmartPointer<vtkSphereSource> sphereSource =
      vtkSmartPointer<vtkSphereSource>::New();
    sphereSource->SetRadius(.01);
    sphereSource->Update();
    input->ShallowCopy(sphereSource->GetOutput());
    }
  else // Read the data from a file
    {
    vtkSmartPointer<vtkXMLPolyDataReader> reader =
      vtkSmartPointer<vtkXMLPolyDataReader>::New();
    reader->SetFileName(argv[1]);
    reader->Update();

    input->ShallowCopy(reader->GetOutput());
  
    }

  vtkSmartPointer<vtkGaussianSplatter> splatter =
    vtkSmartPointer<vtkGaussianSplatter>::New();
#if VTK_MAJOR_VERSION <= 5
  splatter->SetInputConnection(input->GetProducerPort());
#else
  splatter->SetInputData(input);
#endif

  unsigned int n = 200;
  splatter->SetSampleDimensions(n,n,n);
  splatter->SetRadius(.02);
  splatter->SetExponentFactor(-10);
  splatter->SetEccentricity(2);
  splatter->Update();

  vtkSmartPointer<vtkContourFilter> isoSurface =
    vtkSmartPointer<vtkContourFilter>::New();
  isoSurface->SetInputConnection(splatter->GetOutputPort());
  isoSurface->SetValue(0, .95 * splatter->GetRadius());

  // Visualize
  vtkSmartPointer<vtkPolyDataMapper> mapper =
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(isoSurface->GetOutputPort());
  mapper->ScalarVisibilityOff();

  vtkSmartPointer<vtkActor> actor =
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(1.0, 0.3882, 0.2784); 

  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->AddRenderer(renderer);
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderer->AddActor(actor);
  renderer->SetBackground(.2, .3, .4);

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

  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(EmbedPointsIntoVolume)

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

add_executable(EmbedPointsIntoVolume MACOSX_BUNDLE EmbedPointsIntoVolume.cxx)

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

Download and Build EmbedPointsIntoVolume

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

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

cd EmbedPointsIntoVolume/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:

./EmbedPointsIntoVolume

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.