public Element(Poynt s, Poynt e) throws IllegalCircuitException {
// Check that element is not of zero length
if (s.equals(e)) throw new IllegalCircuitException("Elements may not be of zero length.");
start = Poynt.minimum(s, e);
end = start.equals(s) ? e : s;
try {
isHorizontal = Dir.getDirection(s, e).isHorizontal();
} catch (DirException ex) {
throw new IllegalCircuitException(
"Element must be positioned either horizontally or vertically.");
}
if (isHorizontal) length = e.x - s.x;
else length = e.y - s.y;
assert length >= 0;
poynts = new LinkedList<Poynt>();
poynts.add(start);
Poynt prev, next;
prev = next = start;
start.setIsOnCircuit();
start.addLoop();
start.addElement(this);
while (!next.equals(end)) {
try {
if (isHorizontal) next = prev.get(Dir.EAST);
else next = prev.get(Dir.SOUTH);
} catch (IndexOutOfBoundsException ex) {
System.out.println("THE ERROR OCCURED DURING THE CONSTRUCTION OF ELEMENT " + this + ".");
throw ex;
}
poynts.add(next);
next.setIsOnCircuit();
next.addLoop();
next.addElement(this);
prev.addNeighbor(next);
next.addNeighbor(prev);
prev = next;
assert length == poynts.size();
directions = new DirTable();
}
}
public boolean isEndPoint(Poynt p) {
if (p.equals(start)) return true;
if (p.equals(end)) return true;
return false;
}
