# Coordinate

VTKExamples/Cxx/Utilities/Coordinate

### Description

There are many possible coordinate conversions. This example demonstrates NormalizedDisplay->Display.

### Code

Coordinate.cxx

    #include <vtkSmartPointer.h>
    #include <vtkCoordinate.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindow.h>

    int main(int, char *[])
    {
      vtkSmartPointer<vtkRenderWindow> rendererWindow =
        vtkSmartPointer<vtkRenderWindow>::New();

      vtkSmartPointer<vtkRenderer> renderer =
        vtkSmartPointer<vtkRenderer>::New();
      rendererWindow->AddRenderer(renderer);
      rendererWindow->Render();

      vtkSmartPointer<vtkCoordinate> coordinate =
        vtkSmartPointer<vtkCoordinate>::New();
      coordinate->SetCoordinateSystemToNormalizedDisplay();
      coordinate->SetValue(.5,.5,0);
      std::cout << *coordinate << std::endl;
      std::cout << coordinate->GetCoordinateSystemAsString() << std::endl;

      int* val;
      val = coordinate->GetComputedDisplayValue(renderer);
      std::cout << "Val: " << val[0] << " " << val[1] << std::endl;

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(Coordinate)

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

    add_executable(Coordinate MACOSX_BUNDLE Coordinate.cxx )

    target_link_libraries(Coordinate ${VTK_LIBRARIES})

### Download and Build Coordinate

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

    cd Coordinate/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:

    ./Coordinate

WINDOWS USERS

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