+ if (!firstModel)
+ {
+ sb.append("|");
+ }
+ firstModel = false;
+ // todo use JalviewChimeraBinding.getModelSpec(model)
+ // which means this cannot be static
+ sb.append(binding.getModelSpec(model)).append(":");
+
+ boolean firstPositionForModel = true;
+
+ for (String chain : atomSpec.getChains(model))
+ {
+ chain = " ".equals(chain) ? chain : chain.trim();
+
+ List<int[]> rangeList = atomSpec.getRanges(model, chain);
+
+ /*
+ * sort ranges into ascending start position order
+ */
+ Collections.sort(rangeList, IntRangeComparator.ASCENDING);
+
+ int start = rangeList.isEmpty() ? 0 : rangeList.get(0)[0];
+ int end = rangeList.isEmpty() ? 0 : rangeList.get(0)[1];
+
+ Iterator<int[]> iterator = rangeList.iterator();
+ while (iterator.hasNext())
+ {
+ int[] range = iterator.next();
+ if (range[0] <= end + 1)
+ {
+ /*
+ * range overlaps or is contiguous with the last one
+ * - so just extend the end position, and carry on
+ * (unless this is the last in the list)
+ */
+ end = Math.max(end, range[1]);
+ }
+ else
+ {
+ /*
+ * we have a break so append the last range
+ */
+ appendRange(sb, start, end, chain, firstPositionForModel);
+ firstPositionForModel = false;
+ start = range[0];
+ end = range[1];
+ }
+ }
+
+ /*
+ * and append the last range
+ */
+ if (!rangeList.isEmpty())
+ {
+ appendRange(sb, start, end, chain, firstPositionForModel);
+ firstPositionForModel = false;
+ }
+ }
+ }
+ return sb.toString();
+ }
+
+ /**
+ * A helper method that appends one start-end range to a Chimera atomspec
+ *
+ * @param sb
+ * @param start
+ * @param end
+ * @param chain
+ * @param firstPositionForModel
+ */
+ static void appendRange(StringBuilder sb, int start, int end,
+ String chain, boolean firstPositionForModel)
+ {
+ if (!firstPositionForModel)
+ {
+ sb.append(",");
+ }
+ if (end == start)
+ {
+ sb.append(start);