ImplicitModeller
VTKExamples/Cxx/PolyData/ImplicitModeller
Code¶
ImplicitModeller.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkImplicitModeller.h> #include <vtkSphereSource.h> #include <vtkPolyData.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkContourFilter.h> #include <vtkXMLPolyDataReader.h> int main(int argc, char *argv[]) { vtkSmartPointer<vtkPolyData> inputPolyData; if(argc > 1) { vtkSmartPointer<vtkXMLPolyDataReader> reader = vtkSmartPointer<vtkXMLPolyDataReader>::New(); reader->SetFileName(argv[1]); reader->Update(); inputPolyData = reader->GetOutput(); } else { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->SetPhiResolution(15); sphereSource->SetThetaResolution(15); sphereSource->Update(); inputPolyData = sphereSource->GetOutput(); } vtkSmartPointer<vtkImplicitModeller> implicitModeller = vtkSmartPointer<vtkImplicitModeller>::New(); implicitModeller->SetSampleDimensions(50,50,50); #if VTK_MAJOR_VERSION <= 5 implicitModeller->SetInput(inputPolyData); #else implicitModeller->SetInputData(inputPolyData); #endif implicitModeller->AdjustBoundsOn(); implicitModeller->SetAdjustDistance(.1); // Adjust by 10% implicitModeller->SetMaximumDistance(.1); // Compute the range to select a reasonable contour value double bounds[6]; inputPolyData->GetBounds(bounds); double xrange = bounds[1] - bounds[0]; // Create the 0 isosurface vtkSmartPointer<vtkContourFilter> contourFilter = vtkSmartPointer<vtkContourFilter>::New(); contourFilter->SetInputConnection(implicitModeller->GetOutputPort()); contourFilter->SetValue(0, xrange/30.0); // 30% of xrange // Visualize vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); interactor->SetRenderWindow(renderWindow); vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(contourFilter->GetOutputPort()); mapper->ScalarVisibilityOff(); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); renderer->AddActor(actor); renderer->SetBackground(.1, .2, .3); renderWindow->Render(); interactor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ImplicitModeller) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ImplicitModeller MACOSX_BUNDLE ImplicitModeller.cxx) target_link_libraries(ImplicitModeller ${VTK_LIBRARIES})
Download and Build ImplicitModeller¶
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 ImplicitModeller and its CMakeLists.txt file. Once the tarball ImplicitModeller.tar has been downloaded and extracted,
cd ImplicitModeller/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:
./ImplicitModeller
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.