/**
* Returns next color mark.
*
* @param rects rectangle array
* @param ri current position
* @return next color mark
*/
final Color color(final MapRects rects, final int ri) {
// find marked node
final DBNodes marked = view.gui.context.marked;
if (marked != null) {
final int p = -marked.find(rects.get(ri).pre) - 1;
if (p >= 0) {
// mark ancestor of invisible node;
final int i = rects.find(rects.get(ri));
return p < marked.size() && i + 1 < rects.size && marked.sorted(p) < rects.sorted[i + 1].pre
? GUIConstants.colormark2
: null;
}
}
// no mark found
return GUIConstants.colormark1;
}
