Cursor2D

VTKEx/Cxx/Visualization/Cursor2D

Other languages

See (Java)

Question

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Code

Cursor2D.cxx

#include <vtkSmartPointer.h>
#include <vtkCursor2D.h>

#include <vtkSphereSource.h>
#include <vtkProperty.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>

#include <vtkNamedColors.h>

int main(int, char *[])
{
  // Create a sphere
  vtkSmartPointer<vtkSphereSource> sphereSource = 
    vtkSmartPointer<vtkSphereSource>::New();
  sphereSource->SetCenter(0.0, 0.0, 0.0);
  sphereSource->SetRadius(5.0);
  sphereSource->Update();

  // Create a mapper and actor
  vtkSmartPointer<vtkPolyDataMapper> mapper = 
    vtkSmartPointer<vtkPolyDataMapper>::New();
  mapper->SetInputConnection(sphereSource->GetOutputPort());

  vtkSmartPointer<vtkActor> actor = 
    vtkSmartPointer<vtkActor>::New();
  actor->SetMapper(mapper);

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

  // Add the actor to the scene
  renderer->AddActor(actor);

  vtkSmartPointer<vtkNamedColors> colors =
    vtkSmartPointer<vtkNamedColors>::New();
  renderer->SetBackground(colors->GetColor3d("SlateGray").GetData());

  vtkSmartPointer<vtkCursor2D> cursor = 
    vtkSmartPointer<vtkCursor2D>::New();
  cursor->SetModelBounds(-10,10,-10,10,0,0);
  cursor->AllOn();
  cursor->SetFocalPoint (5.0, 5.0, 0.0);
  cursor->OutlineOn();
  cursor->Update();

  vtkSmartPointer<vtkPolyDataMapper> cursorMapper = 
    vtkSmartPointer<vtkPolyDataMapper>::New();
  cursorMapper->SetInputConnection(cursor->GetOutputPort());
  vtkSmartPointer<vtkActor> cursorActor = 
    vtkSmartPointer<vtkActor>::New();
  cursorActor->GetProperty()->SetColor(1,0,0);
  cursorActor->SetMapper(cursorMapper);
  renderer->AddActor(cursorActor);

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

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(Cursor2D)

find_package(VTK COMPONENTS 
  vtkvtkCommonColor
  vtkvtkCommonCore
  vtkvtkCommonDataModel
  vtkvtkFiltersGeneral
  vtkvtkFiltersSources
  vtkvtkInteractionStyle
  vtkvtkRenderingContextOpenGL2
  vtkvtkRenderingCore
  vtkvtkRenderingFreeType
  vtkvtkRenderingGL2PSOpenGL2
  vtkvtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
  message("Skipping Cursor2D: ${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(Cursor2D MACOSX_BUNDLE Cursor2D.cxx )
  target_link_libraries(Cursor2D PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(Cursor2D MACOSX_BUNDLE Cursor2D.cxx )
  target_link_libraries(Cursor2D PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS Cursor2D
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build Cursor2D

Click here to download Cursor2D and its CMakeLists.txt file. Once the tarball Cursor2D.tar has been downloaded and extracted,

cd Cursor2D/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:

./Cursor2D

WINDOWS USERS

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