Dodecahedron

vtk-examples/Cxx/GeometricObjects/Dodecahedron

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Code¶

Dodecahedron.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkLookupTable.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkPolyhedron.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSmartPointer.h>

namespace {
vtkSmartPointer<vtkPolyhedron> MakeDodecahedron();
}

int main(int, char*[])
{
  vtkNew<vtkNamedColors> colors;

  auto dodecahedron = MakeDodecahedron();

  // Visualize
  vtkNew<vtkPolyDataMapper> mapper;
  mapper->SetInputData(dodecahedron->GetPolyData());

  vtkNew<vtkActor> actor;
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(colors->GetColor3d("PapayaWhip").GetData());

  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->SetWindowName("Dodecahedron");
  renderWindow->AddRenderer(renderer);
  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("CadetBlue").GetData());
  renderer->GetActiveCamera()->Azimuth(30);
  renderer->GetActiveCamera()->Elevation(30);

  renderer->ResetCamera();

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

  return EXIT_SUCCESS;
}

namespace {

vtkSmartPointer<vtkPolyhedron> MakeDodecahedron()
{
  vtkSmartPointer<vtkPolyhedron> aDodecahedron =
      vtkSmartPointer<vtkPolyhedron>::New();

  for (int i = 0; i < 20; ++i)
  {
    aDodecahedron->GetPointIds()->InsertNextId(i);
  }

  aDodecahedron->GetPoints()->InsertNextPoint(1.21412, 0, 1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(0.375185, 1.1547, 1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(-0.982247, 0.713644, 1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(-0.982247, -0.713644, 1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(0.375185, -1.1547, 1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(1.96449, 0, 0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(0.607062, 1.86835, 0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(-1.58931, 1.1547, 0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(-1.58931, -1.1547, 0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(0.607062, -1.86835, 0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(1.58931, 1.1547, -0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(-0.607062, 1.86835, -0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(-1.96449, 0, -0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(-0.607062, -1.86835, -0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(1.58931, -1.1547, -0.375185);
  aDodecahedron->GetPoints()->InsertNextPoint(0.982247, 0.713644, -1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(-0.375185, 1.1547, -1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(-1.21412, 0, -1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(-0.375185, -1.1547, -1.58931);
  aDodecahedron->GetPoints()->InsertNextPoint(0.982247, -0.713644, -1.58931);

  vtkIdType faces[73] = {12,                    // number of faces
                         5,  0,  1,  2,  3,  4, // number of ids on face, ids
                         5,  0,  5,  10, 6,  1,  5,  1,  6,  11, 7,  2,  5,  2,
                         7,  12, 8,  3,  5,  3,  8,  13, 9,  4,  5,  4,  9,  14,
                         5,  0,  5,  15, 10, 5,  14, 19, 5,  16, 11, 6,  10, 15,
                         5,  17, 12, 7,  11, 16, 5,  18, 13, 8,  12, 17, 5,  19,
                         14, 9,  13, 18, 5,  19, 18, 17, 16, 15};

  aDodecahedron->SetFaces(faces);
  aDodecahedron->Initialize();

  return aDodecahedron;
}
} // namespace

CMakeLists.txt¶

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(Dodecahedron)

find_package(VTK COMPONENTS 
  vtkCommonColor
  vtkCommonCore
  vtkCommonDataModel
  vtkInteractionStyle
  vtkRenderingContextOpenGL2
  vtkRenderingCore
  vtkRenderingFreeType
  vtkRenderingGL2PSOpenGL2
  vtkRenderingOpenGL2
  QUIET
)

if (NOT VTK_FOUND)
  message("Skipping Dodecahedron: ${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(Dodecahedron MACOSX_BUNDLE Dodecahedron.cxx )
  target_link_libraries(Dodecahedron PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(Dodecahedron MACOSX_BUNDLE Dodecahedron.cxx )
  target_link_libraries(Dodecahedron PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS Dodecahedron
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build Dodecahedron¶

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

cd Dodecahedron/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:

./Dodecahedron

WINDOWS USERS

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