Method addLine

visualization/src/image_viewer.cpp:722–746

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bool
pcl::visualization::ImageViewer::addLine (unsigned int x_min, unsigned int y_min,
                                          unsigned int x_max, unsigned int y_max,
                                          double r, double g, double b,
                                          const std::string &layer_id, double opacity)
{
  // Check to see if this ID entry already exists (has it been already added to the visualizer?)
  auto am_it = std::find_if (layer_map_.begin (), layer_map_.end (), LayerComparator (layer_id));
  if (am_it == layer_map_.end ())
  {
    PCL_DEBUG ("[pcl::visualization::ImageViewer::addLine] No layer with ID='%s' found. Creating new one...\n", layer_id.c_str ());
    am_it = createLayer (layer_id, getSize ()[0] - 1, getSize ()[1] - 1, opacity, false);
  }

  vtkSmartPointer<context_items::Line> line = vtkSmartPointer<context_items::Line>::New ();
  line->setColors (static_cast<unsigned char> (255.0 * r),
                   static_cast<unsigned char> (255.0 * g),
                   static_cast<unsigned char> (255.0 * b));
  line->setOpacity (opacity);
  line->set (static_cast<float> (x_min), static_cast<float> (y_min),
             static_cast<float> (x_max), static_cast<float> (y_max));
  am_it->actor->GetScene ()->AddItem (line);

  return (true);
}

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bool