protected void drawConnections(Graphics g, Collection<Connection> cons) {
if (selectedDotA != null && overDotB != null) {
Color c = g.getColor();
g.setColor(Color.GRAY);
Connection tmpCon = new Connection();
tmpCon.src = selectedDotA;
tmpCon.dst = overDotB;
tmpCon.paint(g);
g.setColor(c);
}
for (Connection con : cons) {
if (selectedDotA != null
&& overDotB != null
&& con.src.distance(selectedDotA) == 0
&& con.dst.distance(overDotB) != 0) {
// ignore
} else if ((overDotA != null && con.src.distance(overDotA) == 0)
|| (overDotB != null && con.dst.distance(overDotB) == 0)) {
Color c = g.getColor();
g.setColor(Color.CYAN);
con.paint(g);
g.setColor(c);
} else con.paint(g);
}
}
public void addSurjectivConnections() {
Iterator<Point> j = dotsB.iterator();
for (Point aDotsA : dotsA) {
Connection con = new Connection();
con.src = aDotsA;
if (!j.hasNext()) j = dotsB.iterator();
con.dst = j.next();
connections.add(con);
}
}
public void mouseClicked(MouseEvent e) {
if (!editable) return;
mouseMoved(e); // just a HACK to get sure that vars are correct
Point p = getPointByPos(dotsA, e.getPoint());
if (p != null) {
selectedDotA = p;
} else if (selectedDotA != null) {
p = getPointByPos(dotsB, e.getPoint());
if (p != null) {
Connection con = getConnectionBySrc(selectedDotA, connections);
if (con != null) connections.remove(con);
con = new Connection();
con.src = selectedDotA;
con.dst = p;
connections.add(con);
onChange();
}
}
this.applet.repaint();
}