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
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.