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.