+vector<LogicSegment::EdgePair> LogicSignal::get_nearest_level_changes(uint64_t sample_pos)
+{
+ assert(base_);
+ assert(owner_);
+
+ if (sample_pos == 0)
+ return vector<LogicSegment::EdgePair>();
+
+ shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
+ if (!segment || (segment->get_sample_count() == 0))
+ return vector<LogicSegment::EdgePair>();
+
+ const View *view = owner_->view();
+ assert(view);
+ const double samples_per_pixel = base_->get_samplerate() * view->scale();
+
+ vector<LogicSegment::EdgePair> edges;
+
+ segment->get_surrounding_edges(edges, sample_pos,
+ samples_per_pixel / Oversampling, base_->index());
+
+ if (edges.empty())
+ return vector<LogicSegment::EdgePair>();
+
+ return edges;
+}
+