GenericDataObjectReader
VTKExamples/Cxx/IO/GenericDataObjectReader
Code¶
GenericDataObjectReader.cxx
#include <vtkGenericDataObjectReader.h> #include <vtkStructuredGrid.h> #include <vtkSmartPointer.h> #include <vtkPolyData.h> #include <string> int main ( int argc, char *argv[] ) { // Ensure a filename was specified if(argc != 2) { std::cerr << "Usage: " << argv[0] << " InputFilename" << endl; return EXIT_FAILURE; } // Get the filename from the command line std::string inputFilename = argv[1]; // Get all data from the file vtkSmartPointer<vtkGenericDataObjectReader> reader = vtkSmartPointer<vtkGenericDataObjectReader>::New(); reader->SetFileName(inputFilename.c_str()); reader->Update(); // All of the standard data types can be checked and obtained like this: if(reader->IsFilePolyData()) { std::cout << "output is a polydata" << std::endl; vtkPolyData* output = reader->GetPolyDataOutput(); std::cout << "output has " << output->GetNumberOfPoints() << " points." << std::endl; } return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(GenericDataObjectReader) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(GenericDataObjectReader MACOSX_BUNDLE GenericDataObjectReader.cxx) target_link_libraries(GenericDataObjectReader ${VTK_LIBRARIES})
Download and Build GenericDataObjectReader¶
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Click here to download GenericDataObjectReader and its CMakeLists.txt file. Once the tarball GenericDataObjectReader.tar has been downloaded and extracted,
cd GenericDataObjectReader/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:
./GenericDataObjectReader
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.