C++ (Cpp) Pointer::GetDisplayGeometry示例

示例#1

文件： mitkDisplayInteractor.cpp 项目： fmorency/MITK

bool mitk::DisplayInteractor::Zoom(StateMachineAction*, InteractionEvent* interactionEvent)
{
  const BaseRenderer::Pointer sender = interactionEvent->GetSender();
  InteractionPositionEvent* positionEvent = dynamic_cast<InteractionPositionEvent*>(interactionEvent);
  if (positionEvent == NULL)
  {
    MITK_WARN<< "DisplayVectorInteractor cannot process the event: " << interactionEvent->GetNameOfClass();
    return false;
  }
  float factor = 1.0;
  float distance = 0;
  if (m_ZoomDirection == "leftright")
  {
    distance = m_CurrentDisplayCoordinate[1] - m_LastDisplayCoordinate[1];
  }
  else
  {
    distance = m_CurrentDisplayCoordinate[0] - m_LastDisplayCoordinate[0];
  }
  // set zooming speed
  if (distance < 0.0)
  {
    factor = 1.0 / m_ZoomFactor;
  }
  else if (distance > 0.0)
  {
    factor = 1.0 * m_ZoomFactor;
  }
  sender->GetDisplayGeometry()->ZoomWithFixedWorldCoordinates(factor, m_StartDisplayCoordinate, m_StartCoordinateInMM);
  sender->GetRenderingManager()->RequestUpdate(sender->GetRenderWindow());
  m_LastDisplayCoordinate = m_CurrentDisplayCoordinate;
  m_CurrentDisplayCoordinate = positionEvent->GetPointerPositionOnScreen();
  return true;
}

示例#2

文件： mitkDisplayInteractor.cpp 项目： DiagnosisMultisystems/MITK

bool mitk::DisplayInteractor::Zoom(StateMachineAction*, InteractionEvent* interactionEvent)
{
  const BaseRenderer::Pointer sender = interactionEvent->GetSender();
  InteractionPositionEvent* positionEvent = static_cast<InteractionPositionEvent*>(interactionEvent);

  float factor = 1.0;
  float distance = 0;

  if (m_ZoomDirection == "updown")
  {
    distance = m_CurrentDisplayCoordinate[1] - m_LastDisplayCoordinate[1];
  }
  else
  {
    distance = m_CurrentDisplayCoordinate[0] - m_LastDisplayCoordinate[0];
  }

  if ( m_InvertZoomDirection )
  {
    distance *= -1.0;
  }

  // set zooming speed
  if (distance < 0.0)
  {
    factor = 1.0 / m_ZoomFactor;
  }
  else if (distance > 0.0)
  {
    factor = 1.0 * m_ZoomFactor;
  }

  if (factor != 1.0)
  {
    sender->GetDisplayGeometry()->ZoomWithFixedWorldCoordinates(factor, m_StartDisplayCoordinate, m_StartCoordinateInMM);
    sender->GetRenderingManager()->RequestUpdate(sender->GetRenderWindow());
  }

  m_LastDisplayCoordinate = m_CurrentDisplayCoordinate;
  m_CurrentDisplayCoordinate = positionEvent->GetPointerPositionOnScreen();
  return true;
}