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Actor2D

vtk-examples/Cxx/Images/Actor2D


Other languages

See (Python), (Java)

Question

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Code

Actor2D.cxx

#include <vtkActor2D.h>
#include <vtkCubeSource.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper2D.h>
#include <vtkProperty2D.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkVertexGlyphFilter.h>

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

  vtkNew<vtkPoints> points;
  points->InsertNextPoint(10, 10, 0);
  points->InsertNextPoint(100, 100, 0);
  points->InsertNextPoint(200, 200, 0);

  vtkNew<vtkPolyData> polydata;
  polydata->SetPoints(points);

  vtkNew<vtkVertexGlyphFilter> glyphFilter;
  glyphFilter->SetInputData(polydata);
  glyphFilter->Update();

  vtkNew<vtkPolyDataMapper2D> mapper;
  mapper->SetInputConnection(glyphFilter->GetOutputPort());
  mapper->Update();

  vtkNew<vtkActor2D> actor;
  actor->SetMapper(mapper);
  actor->GetProperty()->SetColor(colors->GetColor3d("Gold").GetData());
  actor->GetProperty()->SetPointSize(8);

  // Create a renderer, render window, and interactor
  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->AddRenderer(renderer);
  vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // Add the actor to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(colors->GetColor3d("DarkSlateGray").GetData());

  renderWindow->SetSize(300, 300);
  renderWindow->SetWindowName("Actor2D");

  // Render and interact
  renderWindow->Render();
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(Actor2D)

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

if (NOT VTK_FOUND)
  message("Skipping Actor2D: ${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(Actor2D MACOSX_BUNDLE Actor2D.cxx )
  target_link_libraries(Actor2D PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(Actor2D MACOSX_BUNDLE Actor2D.cxx )
  target_link_libraries(Actor2D PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS Actor2D
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build Actor2D

Click here to download Actor2D and its CMakeLists.txt file. Once the tarball Actor2D.tar has been downloaded and extracted,

cd Actor2D/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:

./Actor2D

WINDOWS USERS

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