VTK/Examples/Cxx/Utilities/CustomDenseArray

The only thing you have to do to enable your class to work with vtkDenseArray is add a single line:

operator vtkVariant() const { return vtkVariant(); }

CustomDenseArray.cxx

#include <vtkSmartPointer.h>
#include <vtkDenseArray.h>

struct Point
{
  double x,y;
  
  operator vtkVariant() const { return vtkVariant(); }
};

int main(int, char *[])
{
  Point point;
  point.x = 1.0;
  point.y = 2.0;
  
  std::cout << point.x << " " << point.y << std::endl;
      
  vtkSmartPointer<vtkDenseArray<Point> > array = 
    vtkSmartPointer<vtkDenseArray<Point> >::New();
  array->Resize(5,5);
  
  array->SetValue(4,4, point);
  
  Point retrievedPoint = array->GetValue(4,4);
  std::cout << retrievedPoint.x << " " << retrievedPoint.y << std::endl;

  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(CustomDenseArray)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(CustomDenseArray MACOSX_BUNDLE CustomDenseArray.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(CustomDenseArray ${VTK_LIBRARIES})
else()
  target_link_libraries(CustomDenseArray vtkHybrid vtkWidgets)
endif()

Download and Build CustomDenseArray

Click here to download CustomDenseArray. and its CMakeLists.txt file.

Once the tarball CustomDenseArray.tar has been downloaded and extracted,

cd CustomDenseArray/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:

./CustomDenseArray

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.