Method OnKeyDown

visualization/src/interactor_style.cpp:515–1154

/////////////////////////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////////////////////////////////
void
pcl::visualization::PCLVisualizerInteractorStyle::OnKeyDown ()
{
  if (!init_)
  {
    pcl::console::print_error ("[PCLVisualizerInteractorStyle] Interactor style not initialized. Please call Initialize () before continuing.\n");
    return;
  }

  if (!rens_)
  {
    pcl::console::print_error ("[PCLVisualizerInteractorStyle] No renderer collection given! Use SetRendererCollection () before continuing.\n");
    return;
  }

  FindPokedRenderer (Interactor->GetEventPosition ()[0], Interactor->GetEventPosition ()[1]);

  if (!wif_->GetInput ())
  {
    wif_->SetInput (Interactor->GetRenderWindow ());
    wif_->Modified ();
    snapshot_writer_->Modified ();
  }

  // Save the initial windows width/height
  if (win_height_ == -1 || win_width_ == -1)
  {
    int *win_size = Interactor->GetRenderWindow ()->GetSize ();
    win_height_ = win_size[0];
    win_width_  = win_size[1];
  }

  // Get the status of special keys (Cltr+Alt+Shift)
  bool shift = Interactor->GetShiftKey   ();
  bool ctrl  = Interactor->GetControlKey ();
  bool alt   = Interactor->GetAltKey ();

  bool keymod = false;
  switch (modifier_)
  {
    case INTERACTOR_KB_MOD_ALT:
    {
      keymod = alt;
      break;
    }
    case INTERACTOR_KB_MOD_CTRL:
    {
      keymod = ctrl;
      break;
    }
    case INTERACTOR_KB_MOD_SHIFT:
    {
      keymod = shift;
      break;
    }
  }

  // ---[ Check the rest of the key codes