PolygonalSurfaceContourLineInterpolator
VTKExamples/Cxx/PolyData/PolygonalSurfaceContourLineInterpolator
Code¶
PolygonalSurfaceContourLineInterpolator.cxx
#include <vtkVersion.h> #include "vtkSmartPointer.h" #include "vtkActor.h" #include "vtkCamera.h" #include "vtkCellArray.h" #include "vtkImageDataGeometryFilter.h" #include "vtkPoints.h" #include "vtkPolyData.h" #include "vtkPolyDataCollection.h" #include "vtkPolyDataMapper.h" #include "vtkProperty.h" #include "vtkRenderWindow.h" #include "vtkRenderWindowInteractor.h" #include "vtkRenderer.h" #include "vtkSphereSource.h" #include "vtkTriangleFilter.h" #include "vtkXMLPolyDataReader.h" #include "vtkContourWidget.h" #include "vtkOrientedGlyphContourRepresentation.h" #include "vtkPolygonalSurfacePointPlacer.h" #include "vtkPolygonalSurfaceContourLineInterpolator.h" int main(int argc, char *argv[]) { vtkSmartPointer<vtkPolyData> polyData; if (argc < 2) { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->SetThetaResolution(40); sphereSource->SetPhiResolution(20); sphereSource->Update(); polyData = sphereSource->GetOutput(); } else { vtkSmartPointer<vtkXMLPolyDataReader> reader = vtkSmartPointer<vtkXMLPolyDataReader>::New(); reader->SetFileName(argv[1]); reader->Update(); polyData = reader->GetOutput(); } // The Dijkistra interpolator will not accept cells that aren't triangles vtkSmartPointer<vtkTriangleFilter> triangleFilter = vtkSmartPointer<vtkTriangleFilter>::New(); #if VTK_MAJOR_VERSION <= 5 triangleFilter->SetInput( polyData ); #else triangleFilter->SetInputData( polyData ); #endif triangleFilter->Update(); vtkSmartPointer<vtkPolyData> pd = triangleFilter->GetOutput(); //Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(triangleFilter->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetInterpolationToFlat(); // Create the render window, renderer and interactor. vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); interactor->SetRenderWindow(renderWindow); // Add the actors to the renderer, set the background and size renderer->AddActor(actor); renderer->SetBackground (.3, .4, .5); // Here comes the contour widget stuff... vtkSmartPointer<vtkContourWidget> contourWidget = vtkSmartPointer<vtkContourWidget>::New(); contourWidget->SetInteractor(interactor); vtkSmartPointer<vtkOrientedGlyphContourRepresentation> rep = vtkOrientedGlyphContourRepresentation::SafeDownCast( contourWidget->GetRepresentation()); rep->GetLinesProperty()->SetColor(1, 0.2, 0); rep->GetLinesProperty()->SetLineWidth(3.0); vtkSmartPointer<vtkPolygonalSurfacePointPlacer> pointPlacer = vtkSmartPointer<vtkPolygonalSurfacePointPlacer>::New(); pointPlacer->AddProp(actor); pointPlacer->GetPolys()->AddItem( pd ); rep->SetPointPlacer(pointPlacer); vtkSmartPointer<vtkPolygonalSurfaceContourLineInterpolator> interpolator = vtkSmartPointer<vtkPolygonalSurfaceContourLineInterpolator>::New(); interpolator->GetPolys()->AddItem( pd ); rep->SetLineInterpolator(interpolator); renderWindow->Render(); interactor->Initialize(); contourWidget->EnabledOn(); interactor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(PolygonalSurfaceContourLineInterpolator) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(PolygonalSurfaceContourLineInterpolator MACOSX_BUNDLE PolygonalSurfaceContourLineInterpolator.cxx) target_link_libraries(PolygonalSurfaceContourLineInterpolator ${VTK_LIBRARIES})
Download and Build PolygonalSurfaceContourLineInterpolator¶
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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 PolygonalSurfaceContourLineInterpolator and its CMakeLists.txt file. Once the tarball PolygonalSurfaceContourLineInterpolator.tar has been downloaded and extracted,
cd PolygonalSurfaceContourLineInterpolator/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:
./PolygonalSurfaceContourLineInterpolator
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.