Method UpdateHandleHighlight

Modules/Gizmo/src/mitkGizmoInteractor.cpp:427–465

}

void mitk::GizmoInteractor::UpdateHandleHighlight()
{
  if (m_HighlightedHandle != m_PickedHandle) {

    auto node = GetDataNode();
    if (node == nullptr) return;

    auto base_prop = node->GetProperty("LookupTable");
    if (base_prop == nullptr) return;

    auto lut_prop = dynamic_cast<LookupTableProperty*>(base_prop);
    if (lut_prop == nullptr) return;

    auto lut = lut_prop->GetLookupTable();
    if (lut == nullptr) return;

    // Table size is expected to constructed as one entry per gizmo-part enum value
    assert(lut->GetVtkLookupTable()->GetNumberOfTableValues() > std::max(m_PickedHandle, m_HighlightedHandle));

    // Reset previously overwritten color
    if (m_HighlightedHandle != Gizmo::NoHandle)
    {
        lut->SetTableValue(m_HighlightedHandle, m_ColorReplacedByHighlight);
    }

    // Overwrite currently highlighted color
    if (m_PickedHandle != Gizmo::NoHandle)
    {
      lut->GetTableValue(m_PickedHandle, m_ColorReplacedByHighlight);
      lut->SetTableValue(m_PickedHandle, m_ColorForHighlight);
    }

    // Mark node modified to allow repaint
    node->Modified();
    RenderingManager::GetInstance()->RequestUpdateAll(RenderingManager::REQUEST_UPDATE_ALL);

    m_HighlightedHandle = m_PickedHandle;
  }
}