+ * Find any features on the CDS/protein complement of the sequence region and
+ * draw them, with visibility and colouring as configured in the complementary
+ * viewport
+ *
+ * @param g
+ * @param seq
+ * @param start
+ * @param end
+ * @param y1
+ * @param colourOnly
+ * @param visiblePositions
+ * @param drawnColour
+ * @return
+ */
+ Color drawComplementFeatures(final Graphics g, final SequenceI seq,
+ int start, int end, int y1, boolean colourOnly,
+ ContiguousI visiblePositions, Color drawnColour)
+ {
+ AlignViewportI comp = av.getCodingComplement();
+ FeatureRenderer fr2 = Desktop.getAlignFrameFor(comp)
+ .getFeatureRenderer();
+
+ final int visibleStart = visiblePositions.getBegin();
+ final int visibleEnd = visiblePositions.getEnd();
+
+ for (int pos = visibleStart; pos <= visibleEnd; pos++)
+ {
+ int column = seq.findIndex(pos);
+ MappedFeatures mf = fr2.findComplementFeaturesAtResidue(seq, pos);
+ if (mf != null)
+ {
+ for (SequenceFeature sf : mf.features)
+ {
+ FeatureColourI fc = fr2.getFeatureStyle(sf.getType());
+ Color featureColour = fr2.getColor(sf, fc);
+ renderFeature(g, seq, column - 1, column - 1, featureColour,
+ start, end, y1, colourOnly);
+ drawnColour = featureColour;
+ }
+ }
+ }
+ return drawnColour;
+ }
+
+ /**