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DenseArrayRange

vtk-examples/Cxx/Utilities/DenseArrayRange

Question

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Code

DenseArrayRange.cxx

#include <vtkArrayRange.h>
#include <vtkDenseArray.h>
#include <vtkNew.h>

int main(int, char*[])
{
  vtkNew<vtkDenseArray<double>> array;
  array->Resize(5, 1);

  for (unsigned int i = 0; i < 5; i++)
  {
    array->SetValue(i, 0, 2.0);
    double val = array->GetValue(i, 0);
    std::cout << "val: " << val << std::endl;
  }

  // int extent = array->GetExtents()[1];
  int dim1start = array->GetExtent(0).GetBegin();
  int dim1end = array->GetExtent(0).GetEnd();
  std::cout << "dim1: " << dim1start << " to " << dim1end << std::endl;
  // int dim2 = array->GetExtent(1)[1];

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(DenseArrayRange)

find_package(VTK COMPONENTS 
  vtkCommonCore
  QUIET
)

if (NOT VTK_FOUND)
  message("Skipping DenseArrayRange: ${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(DenseArrayRange MACOSX_BUNDLE DenseArrayRange.cxx )
  target_link_libraries(DenseArrayRange PRIVATE ${VTK_LIBRARIES})
else ()
  # include all components
  add_executable(DenseArrayRange MACOSX_BUNDLE DenseArrayRange.cxx )
  target_link_libraries(DenseArrayRange PRIVATE ${VTK_LIBRARIES})
  # vtk_module_autoinit is needed
  vtk_module_autoinit(
    TARGETS DenseArrayRange
    MODULES ${VTK_LIBRARIES}
    )
endif ()

Download and Build DenseArrayRange

Click here to download DenseArrayRange and its CMakeLists.txt file. Once the tarball DenseArrayRange.tar has been downloaded and extracted,

cd DenseArrayRange/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:

./DenseArrayRange

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.