ArrayLookup
VTKExamples/Cxx/Utilities/ArrayLookup
Code¶
ArrayLookup.cxx
#include <vtkSmartPointer.h> #include <vtkFloatArray.h> #include <vtkIdList.h> int main(int, char *[]) { vtkSmartPointer<vtkFloatArray> distances = vtkSmartPointer<vtkFloatArray>::New(); distances->SetNumberOfComponents(1); distances->SetName("Distances"); distances->InsertNextValue(5); distances->InsertNextValue(15); distances->InsertNextValue(15); distances->InsertNextValue(25); distances->InsertNextValue(15); // Get first location vtkIdType result = distances->LookupValue(15); std::cout << "result: " << result << std::endl; // Get all locations vtkSmartPointer<vtkIdList> idList = vtkSmartPointer<vtkIdList>::New(); distances->LookupValue(15, idList); std::cout << "found at: " << std::endl; for(vtkIdType i = 0; i < idList->GetNumberOfIds(); i++) { std::cout << idList->GetId(i) << " "; } return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) project(ArrayLookup) find_package(VTK COMPONENTS vtkCommonCore QUIET) if (NOT VTK_FOUND) message("Skipping ArrayLookup: ${VTK_NOT_FOUND_MESSAGE}") return () endif() message (STATUS "VTK_VERSION: ${VTK_VERSION}") if (VTK_VERSION VERSION_LESS "8.90.0") # old system include(${VTK_USE_FILE}) add_executable(ArrayLookup MACOSX_BUNDLE ArrayLookup.cxx ) target_link_libraries(ArrayLookup PRIVATE ${VTK_LIBRARIES}) else () # include all components add_executable(ArrayLookup MACOSX_BUNDLE ArrayLookup.cxx ) target_link_libraries(ArrayLookup PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS ArrayLookup MODULES ${VTK_LIBRARIES} ) endif ()
Download and Build ArrayLookup¶
Click here to download ArrayLookup and its CMakeLists.txt file. Once the tarball ArrayLookup.tar has been downloaded and extracted,
cd ArrayLookup/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:
./ArrayLookup
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.