Silhouette
VTKExamples/Cxx/PolyData/Silhouette
Code¶
Silhouette.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkProperty.h> #include <vtkPolyData.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkPolyDataSilhouette.h> #include <vtkSphereSource.h> #include <vtkXMLPolyDataReader.h> #include <vtkCleanPolyData.h> int main(int argc, char *argv[]) { vtkSmartPointer<vtkPolyData> polyData; if (argc < 2) { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); polyData = sphereSource->GetOutput(); } else { vtkSmartPointer<vtkXMLPolyDataReader> reader = vtkSmartPointer<vtkXMLPolyDataReader>::New(); reader->SetFileName(argv[1]); vtkSmartPointer<vtkCleanPolyData> clean = vtkSmartPointer<vtkCleanPolyData>::New(); clean->SetInputConnection(reader->GetOutputPort()); clean->Update(); polyData = clean->GetOutput(); } //create mapper and actor for original model vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); #if VTK_MAJOR_VERSION <= 5 mapper->SetInput(polyData); #else mapper->SetInputData(polyData); #endif vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetInterpolationToFlat(); //create renderer and renderWindow vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); renderer->AddActor(actor); //view the original model //Compute the silhouette vtkSmartPointer<vtkPolyDataSilhouette> silhouette = vtkSmartPointer<vtkPolyDataSilhouette>::New(); #if VTK_MAJOR_VERSION <= 5 silhouette->SetInput(polyData); #else silhouette->SetInputData(polyData); #endif silhouette->SetCamera(renderer->GetActiveCamera()); silhouette->SetEnableFeatureAngle(0); //create mapper and actor for silouette vtkSmartPointer<vtkPolyDataMapper> mapper2 = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper2->SetInputConnection(silhouette->GetOutputPort()); vtkSmartPointer<vtkActor> actor2 = vtkSmartPointer<vtkActor>::New(); actor2->SetMapper(mapper2); actor2->GetProperty()->SetColor(1.0, 0.3882, 0.2784); // tomato actor2->GetProperty()->SetLineWidth(5); renderer->AddActor(actor2); renderer->SetBackground(.1, .2, .3); renderer->ResetCamera(); //you MUST NOT call renderWindow->Render() before //iren->SetRenderWindow(renderWindow); vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New(); iren->SetRenderWindow(renderWindow); //render and interact renderWindow->Render(); iren->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(Silhouette) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(Silhouette MACOSX_BUNDLE Silhouette.cxx) target_link_libraries(Silhouette ${VTK_LIBRARIES})
Download and Build Silhouette¶
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 Silhouette and its CMakeLists.txt file. Once the tarball Silhouette.tar has been downloaded and extracted,
cd Silhouette/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:
./Silhouette
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.