tutorial-draw-cross.cpp

#include <visp3/core/vpConfig.h>
#include <visp3/gui/vpDisplayFactory.h>
 
int main()
{
#ifdef ENABLE_VISP_NAMESPACE
  using namespace VISP_NAMESPACE_NAME;
#endif
 
  vpImage<unsigned char> I(2160, 3840, 128);
#if (VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11)
  std::shared_ptr<vpDisplay> pdisplay = vpDisplayFactory::createDisplay(I, -1, -1, "Drawing a cross.", vpDisplay::SCALE_AUTO);
#else
  vpDisplay *pdisplay = vpDisplayFactory::allocateDisplay(I, -1, -1, "Drawing a cross.", vpDisplay::SCALE_AUTO);
#endif
 
  try {
    vpDisplay::setTitle(I, "My image");
    vpDisplay::display(I);
    vpDisplay::displayCross(I, I.getHeight() / 2, I.getWidth() / 2, I.getWidth() / 2, vpColor::red, 2);
    vpDisplay::flush(I);
    std::cout << "A click to quit..." << std::endl;
    vpDisplay::getClick(I);
  }
  catch (const vpException &e) {
    std::cout << "Catch an exception: " << e.getMessage() << std::endl;
  }
  std::cout << std::endl;
#if (VISP_CXX_STANDARD < VISP_CXX_STANDARD_11)
  delete pdisplay;
#endif
  return 0;
}