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
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.