NormalizeVector

VTKExamples/Cxx/Math/NormalizeVector

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Question

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Code

NormalizeVector.cxx

#include <vtkMath.h>

int main(int, char*[])
{
  double a[3] = {100.0, 2.0, 1.0};
  std::cout << a[0] << " " << a[1] << " " << a[2] << std::endl;
  vtkMath::Normalize(a);
  std::cout << a[0] << " " << a[1] << " " << a[2] << std::endl;

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(NormalizeVector)

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

Download and Build NormalizeVector

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

cd NormalizeVector/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:

./NormalizeVector

WINDOWS USERS

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