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OrientedGlyphs

vtk-examples/Cxx/Visualization/OrientedGlyphs


Other languages

See (Python), (Java)

Question

If you have a question about this example, please use the VTK Discourse Forum

Code

OrientedGlyphs.cxx

#include <vtkActor.h>
#include <vtkArrowSource.h>
#include <vtkCamera.h>
#include <vtkCellArray.h>
#include <vtkGlyph3D.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPointData.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
#include <vtkXMLPolyDataWriter.h>

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

  vtkNew<vtkSphereSource> sphereSource;
  sphereSource->Update();

  vtkNew<vtkPolyData> input;
  input->ShallowCopy(sphereSource->GetOutput());

  vtkNew<vtkArrowSource> arrowSource;

  vtkNew<vtkGlyph3D> glyph3D;
  glyph3D->SetSourceConnection(arrowSource->GetOutputPort());
  glyph3D->SetVectorModeToUseNormal();
  glyph3D->SetInputData(input);
  glyph3D->SetScaleFactor(.2);
  glyph3D->Update();

  // Visualize
  vtkNew<vtkPolyDataMapper> mapper;
  mapper->SetInputConnection(glyph3D->GetOutputPort());

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

  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->AddRenderer(renderer);
  renderWindow->SetWindowName("OrientedGlyphs");

  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("DarkGreen").GetData());

  renderWindow->Render();

  auto camera = renderer->GetActiveCamera();
  camera->SetPosition(-0.399941, -1.070475, 2.931458);
  camera->SetFocalPoint(-0.000000, -0.000000, 0.000000);
  camera->SetViewUp(-0.028450, 0.940195, 0.339448);
  camera->SetDistance(3.146318);
  camera->SetClippingRange(1.182293, 5.626211);

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

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(OrientedGlyphs)

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

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

Download and Build OrientedGlyphs

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

cd OrientedGlyphs/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:

./OrientedGlyphs

WINDOWS USERS

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