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//****************************************************************************

// ---- version information ----

//

// XorPort.java          v 1.00 b1

// Written by:           I. van Rienen / E-mail ivr@bart.nl

// URL:                  http://www/bart.nl/~ivr

// Initial release:

// Released in public domain:

//

// ---- Description ----

// Java class containing methods for a Exclusive or-port

//

// This program and the Java source is in the public domain.

// Permission to use, copy, modify, and distribute this software

// and its documentation for NON-COMMERCIAL purposes and

// without fee is hereby granted.

//

//    Copyright 1996

//

//    Iwan van Rienen

//    Joan Maetsuyckerstr. 145

//    2593 ZG  The Hague

//    The Netherlands

//

// I am not responsible for any bugs in this program and

// possible damage to hard- or software when using this program.

//****************************************************************************

import java.applet.Applet;

import java.awt.*;

import java.util.Vector;



class XorPort extends LogicPort {



//----------------------------------------------------------------------------

// The constructor of a new Xor port

//----------------------------------------------------------------------------

    public XorPort(int i, int x, int y, int fl) {

        super(i, x, y, fl);

    }



//----------------------------------------------------------------------------

// The constructor of a new XOR port, which is a copy of CompToCopy

//----------------------------------------------------------------------------

    public XorPort (ElectronicComponent CompToCopy, int xo, int yo) {

        super (CompToCopy, xo, yo);

    }



//----------------------------------------------------------------------------

// Method for copying this component.

//----------------------------------------------------------------------------

    public ElectronicComponent Copy(int xo, int yo) {

        return this; // Should not occure, But return <this> to avoid problems

    }



//----------------------------------------------------------------------------

// Method for drawing this XOR port

//----------------------------------------------------------------------------

    public void draw(Graphics g, int xp, int yp, int gs) {

        super.draw (g, xp, yp, gs);

        int x = Pos.x - xp;

        int y = Pos.y - yp;



        // Draw the body

        g.setColor (ComponentColor);

        g.drawArc ((x + 2) * gs, (y + 1) * gs, gs * 1, gs * 4 , -90, 180);

        g.drawArc ((x - 3) * gs, (y + 1) * gs, (int)(gs * 11.5), gs * 12 , 42, 49);

        g.drawArc ((x - 3) * gs, (y - 7) * gs, (int)(gs * 11.5), gs * 12 , -42, -49);

        g.drawArc ((int)((x + 1.5) * gs), (y + 1) * gs, gs * 1, gs * 4 , -90, 180);

    }



//----------------------------------------------------------------------------

// This method is simulating the component

//----------------------------------------------------------------------------

    public void SimulateLogic() {

        int ix = 0;

        int Result = 0;

        for (ix = 0; ix < Inputs; ix++) {

            if (IPin[ix].getLevel() == 5) {

                Result++;

            }

        }

        OPin[0].Level = (Result == 1) ? 5 : 0;

    }

}