/**
* Groups nodes with their connected north/south segments to keep them at the correct position
* relative to each other.
*/
private void groupCNodes() {
// resetting groups from previous compaction
cGraph.cGroups.clear();
// necessary because of the exception in CGroup.addCNode
for (CNode cNode : cGraph.cNodes) {
cNode.cGroup = null;
}
// creating groups for independent CNodes
for (CNode cNode : cGraph.cNodes) {
if (cNode.parentNode == null) {
cGraph.cGroups.add(new CGroup(cNode));
}
}
// adding CNodes of north/south segments to the same group as their parent nodes
for (CNode cNode : cGraph.cNodes) {
if (cNode.parentNode != null) {
cNode.parentNode.cGroup.addCNode(cNode);
}
}
}
/**
* Applies the compacted positions to the {@link LGraphElement}s represented by {@link CNode}s.
*/
private void applyNodePositions() {
for (CNode cNode : cGraph.cNodes) {
cNode.applyElementPosition();
}
}