private void checkEdgeRing(EdgeGraph graph, Coordinate p, Coordinate[] dest) {
HalfEdge e = graph.findEdge(p, dest[0]);
HalfEdge onext = e;
int i = 0;
do {
assertTrue(onext.dest().equals2D(dest[i++]));
onext = onext.oNext();
} while (onext != e);
}
private void checkEdge(EdgeGraph graph, Coordinate p0, Coordinate p1) {
HalfEdge e = graph.findEdge(p0, p1);
assertNotNull(e);
}