+ * Outputs any visible complementary (CDS/peptide) positional features as
+ * Jalview format, within feature group. The coordinates of the linked
+ * features are converted to the corresponding positions of the local
+ * sequences.
+ *
+ * @param out
+ * @param fr
+ * @param sequences
+ * @return
+ */
+ private int outputComplementFeatures(StringBuilder out,
+ FeatureRenderer fr, SequenceI[] sequences)
+ {
+ AlignViewportI comp = fr.getViewport().getCodingComplement();
+ FeatureRenderer fr2 = Desktop.getAlignFrameFor(comp)
+ .getFeatureRenderer();
+
+ /*
+ * bin features by feature group and sequence
+ */
+ Map<String, Map<String, List<SequenceFeature>>> map = new TreeMap<>(
+ String.CASE_INSENSITIVE_ORDER);
+ int count = 0;
+
+ for (SequenceI seq : sequences)
+ {
+ /*
+ * find complementary features
+ */
+ List<SequenceFeature> complementary = findComplementaryFeatures(seq,
+ fr2);
+ String seqName = seq.getName();
+
+ for (SequenceFeature sf : complementary)
+ {
+ String group = sf.getFeatureGroup();
+ if (!map.containsKey(group))
+ {
+ map.put(group, new LinkedHashMap<>()); // preserves sequence order
+ }
+ Map<String, List<SequenceFeature>> groupFeatures = map.get(group);
+ if (!groupFeatures.containsKey(seqName))
+ {
+ groupFeatures.put(seqName, new ArrayList<>());
+ }
+ List<SequenceFeature> foundFeatures = groupFeatures.get(seqName);
+ foundFeatures.add(sf);
+ count++;
+ }
+ }
+
+ /*
+ * output features by group
+ */
+ for (Entry<String, Map<String, List<SequenceFeature>>> groupFeatures : map
+ .entrySet())
+ {
+ out.append(newline);
+ String group = groupFeatures.getKey();
+ if (!"".equals(group))
+ {
+ out.append(STARTGROUP).append(TAB).append(group).append(newline);
+ }
+ Map<String, List<SequenceFeature>> seqFeaturesMap = groupFeatures
+ .getValue();
+ for (Entry<String, List<SequenceFeature>> seqFeatures : seqFeaturesMap
+ .entrySet())
+ {
+ String sequenceName = seqFeatures.getKey();
+ for (SequenceFeature sf : seqFeatures.getValue())
+ {
+ formatJalviewFeature(out, sequenceName, sf);
+ }
+ }
+ if (!"".equals(group))
+ {
+ out.append(ENDGROUP).append(TAB).append(group).append(newline);
+ }
+ }
+
+ return count;
+ }
+
+ /**
+ * Answers a list of mapped features visible in the (CDS/protein) complement,
+ * with feature positions translated to local sequence coordinates
+ *
+ * @param seq
+ * @param fr2
+ * @return
+ */
+ protected List<SequenceFeature> findComplementaryFeatures(SequenceI seq,
+ FeatureRenderer fr2)
+ {
+ /*
+ * avoid duplication of features (e.g. peptide feature
+ * at all 3 mapped codon positions)
+ */
+ List<SequenceFeature> found = new ArrayList<>();
+ List<SequenceFeature> complementary = new ArrayList<>();
+
+ for (int pos = seq.getStart(); pos <= seq.getEnd(); pos++)
+ {
+ MappedFeatures mf = fr2.findComplementFeaturesAtResidue(seq, pos);
+
+ if (mf != null)
+ {
+ for (SequenceFeature sf : mf.features)
+ {
+ /*
+ * make a virtual feature with local coordinates
+ */
+ if (!found.contains(sf))
+ {
+ String group = sf.getFeatureGroup();
+ if (group == null)
+ {
+ group = "";
+ }
+ found.add(sf);
+ int begin = sf.getBegin();
+ int end = sf.getEnd();
+ int[] range = mf.getMappedPositions(begin, end);
+ SequenceFeature sf2 = new SequenceFeature(sf, range[0],
+ range[1], group, sf.getScore());
+ complementary.add(sf2);
+ }
+ }
+ }
+ }
+
+ return complementary;
+ }
+
+ /**
+ * Outputs any feature filters defined for visible feature types, sandwiched
+ * by STARTFILTERS and ENDFILTERS lines