public static void convertEquationToCircuit() {
String eq = JOptionPane.showInputDialog(MDIWindow.getDrawingPad(), "Enter Equation");
if (eq == null) return;
EquationCircuit eq_cir = new EquationCircuit();
DigitalCircuit cir = eq_cir.convert(eq);
MDIWindow.getDrawingPad().setCircuit(cir);
}
public static DigitalShape getComp(Point p) {
return MDIWindow.getDrawingPad().getCircuit().find(p);
}