CellIdFromGridCoordinates
VTKExamples/Cxx/ImageData/CellIdFromGridCoordinates
Code¶
CellIdFromGridCoordinates.cxx
#include <vtkVersion.h> #include <vtkSmartPointer.h> #include <vtkImageData.h> #include <vtkStructuredData.h> int main(int, char *[]) { vtkSmartPointer<vtkImageData> grid = vtkSmartPointer<vtkImageData>::New(); grid->SetOrigin(0, 0, 0); unsigned int numVoxelsPerDimension = 2; //the number of voxels in each dimension grid->SetSpacing(1, 1, 1); int extent[6]; extent[0] = 0; extent[1] = numVoxelsPerDimension; extent[2] = 0; extent[3] = numVoxelsPerDimension; extent[4] = 0; extent[5] = numVoxelsPerDimension; grid->SetExtent(extent); #if VTK_MAJOR_VERSION <= 5 grid->SetScalarTypeToInt(); grid->SetNumberOfScalarComponents(1); #else grid->AllocateScalars(VTK_INT,1); #endif for(unsigned int i = 0; i < numVoxelsPerDimension; ++i) { for(unsigned int j = 0; j < numVoxelsPerDimension; ++j) { for(unsigned int k = 0; k < numVoxelsPerDimension; ++k) { int pos[3]; pos[0] = i; pos[1] = j; pos[2] = k; vtkIdType id = vtkStructuredData::ComputeCellIdForExtent(extent, pos); std::cout << "Cell " << i << " " << j << " " << k << " has id : " << id << std::endl; } } } return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(CellIdFromGridCoordinates) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(CellIdFromGridCoordinates MACOSX_BUNDLE CellIdFromGridCoordinates.cxx) target_link_libraries(CellIdFromGridCoordinates ${VTK_LIBRARIES})
Download and Build CellIdFromGridCoordinates¶
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Click here to download CellIdFromGridCoordinates and its CMakeLists.txt file. Once the tarball CellIdFromGridCoordinates.tar has been downloaded and extracted,
cd CellIdFromGridCoordinates/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:
./CellIdFromGridCoordinates
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.