/**
* Process an edge and its labels.
*
* @param edge an edge
* @param edgeRouting the global edge routing setting
*/
private KVector processEdge(final KEdge edge, final EdgeRouting edgeRouting) {
KEdgeLayout edgeLayout = edge.getData(KEdgeLayout.class);
boolean sameHierarchy = edge.getSource().getParent() == edge.getTarget().getParent();
KVector maxv = new KVector();
KVectorChain bendPoints = edgeLayout.getProperty(LayoutOptions.BEND_POINTS);
// we need at least two bend points, since the source point and target point must be included
if (bendPoints != null && bendPoints.size() >= 2) {
edgeLayout.applyVectorChain(bendPoints);
}
// determine maximal coordinates
if (sameHierarchy) {
for (KPoint point : edgeLayout.getBendPoints()) {
maxv.x = Math.max(maxv.x, point.getX());
maxv.y = Math.max(maxv.y, point.getY());
}
}
// set the fixed position of the edge labels, or leave them as they are
for (KLabel label : edge.getLabels()) {
KShapeLayout labelLayout = label.getData(KShapeLayout.class);
KVector pos = labelLayout.getProperty(LayoutOptions.POSITION);
if (pos != null) {
labelLayout.applyVector(pos);
}
if (sameHierarchy) {
maxv.x = Math.max(maxv.x, labelLayout.getXpos() + labelLayout.getWidth());
maxv.y = Math.max(maxv.y, labelLayout.getYpos() + labelLayout.getHeight());
}
}
return maxv;
}