CornerAnnotation
VTKExamples/Cxx/Visualization/CornerAnnotation
Code¶
CornerAnnotation.cxx
#include <vtkSmartPointer.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkTextProperty.h> #include <vtkSphereSource.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkCornerAnnotation.h> int main( int, char *[] ) { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection( sphereSource->GetOutputPort() ); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper( mapper ); // Visualize 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 ); // Annotate the image with window/level and mouse over pixel information vtkSmartPointer<vtkCornerAnnotation> cornerAnnotation = vtkSmartPointer<vtkCornerAnnotation>::New(); cornerAnnotation->SetLinearFontScaleFactor( 2 ); cornerAnnotation->SetNonlinearFontScaleFactor( 1 ); cornerAnnotation->SetMaximumFontSize( 20 ); cornerAnnotation->SetText( 0, "lower left" ); cornerAnnotation->SetText( 1, "lower right" ); cornerAnnotation->SetText( 2, "upper left" ); cornerAnnotation->SetText( 3, "upper right" ); cornerAnnotation->GetTextProperty()->SetColor( 1, 0, 0 ); renderer->AddViewProp( cornerAnnotation ); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(CornerAnnotation) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(CornerAnnotation MACOSX_BUNDLE CornerAnnotation.cxx) target_link_libraries(CornerAnnotation ${VTK_LIBRARIES})
Download and Build CornerAnnotation¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download CornerAnnotation and its CMakeLists.txt file. Once the tarball CornerAnnotation.tar has been downloaded and extracted,
cd CornerAnnotation/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:
./CornerAnnotation
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.