DEMReader
VTKExamples/Cxx/IO/DEMReader
Code¶
DEMReader.cxx
#include <vtkSmartPointer.h> #include <vtkImageActor.h> #include <vtkImageMapToColors.h> #include <vtkLookupTable.h> #include <vtkDEMReader.h> #include <vtkImageData.h> #include <vtkImageMapper3D.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkInteractorStyleImage.h> #include <vtkRenderer.h> int main(int argc, char* argv[]) { // Verify arguments if(argc < 2) { std::cerr << "Required: filename.dem" << std::endl; return EXIT_FAILURE; } // Read the file vtkSmartPointer<vtkDEMReader> reader = vtkSmartPointer<vtkDEMReader>::New(); reader->SetFileName(argv[1]); reader->Update(); vtkSmartPointer<vtkLookupTable> lut = vtkSmartPointer<vtkLookupTable>::New(); lut->SetHueRange(0.6, 0); lut->SetSaturationRange(1.0, 0); lut->SetValueRange(0.5, 1.0); lut->SetTableRange(reader->GetOutput()->GetScalarRange()); // Visualize vtkSmartPointer<vtkImageMapToColors> mapColors = vtkSmartPointer<vtkImageMapToColors>::New(); mapColors->SetLookupTable(lut); mapColors->SetInputConnection(reader->GetOutputPort()); // Create an actor vtkSmartPointer<vtkImageActor> actor = vtkSmartPointer<vtkImageActor>::New(); actor->GetMapper()->SetInputConnection(mapColors->GetOutputPort()); // Setup renderer vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->AddActor(actor); renderer->ResetCamera(); // Setup render window vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); // Setup render window interactor vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New(); renderWindowInteractor->SetInteractorStyle(style); // Render and start interaction renderWindowInteractor->SetRenderWindow(renderWindow); renderWindowInteractor->Initialize(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(DEMReader) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(DEMReader MACOSX_BUNDLE DEMReader.cxx) target_link_libraries(DEMReader ${VTK_LIBRARIES})
Download and Build DEMReader¶
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 Some tarballs may be missing or out-of-date.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 DEMReader and its CMakeLists.txt file. Once the tarball DEMReader.tar has been downloaded and extracted,
cd DEMReader/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:
./DEMReader
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.