or1.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
#  Logic Circuits - or1.py
#  Build an OR gate from simpler components
#
#  Copyleft 2015 Chris Meyers <chris.meyers47@gmail.com> 2015.12.13
#
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License as
#  published by the Free Software Foundation; either version 2 of
#  the License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public
#  License along with this program; if not, write to the Free
#  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
#  Boston, MA 02110-1301, USA.
#

__author__     = "Chris Meyers, Jeff Elkner and Kevin Cole"
__copyright__  = "Copyleft 2015, Chris Meyers (2015.12.13)"
__credits__    = ["Chris Meyers", "Jeff Elkner",
                  "Kevin Cole"]  # Authors and bug reporters
__license__    = "GPL"
__version__    = "2.0"
__maintainer__ = "Chris Meyers, Jeff Elkner, Kevin Cole"
__email__      = "kevin.cole@novawebcoop.org"
__status__     = "Development"  # "Prototype", "Development" or "Production"
__appname__    = "Logic Circuits"

import pygame as pg
from   gates     import Nand2, Inv, Swt
from   circuit   import Circuit


class TestOr (Circuit):
    def setupGraphics(s):
        s.banner = "Building an OR gate from basic components"
        n1 = Nand2(s, "N1", s.scale1((150, 30))) # Nand Gate
        i1 = Inv(s,   "I1")  # Inverter for n1.A
        i2 = Inv(s,   "I2")  # Inverter for n1.B
        s1 = Swt(s,   "S1")  # Switch feeding input A
        s2 = Swt(s,   "S2")  # Switch feeding input B

        s2.align(s2.B, n1.B, -30,   0)
        i1.align(i1.B, n1.A, -40, -20)  # inverter precedes Nand
        s1.align(s1.B, i1.A, -50,   0)  # line up the gates
        i2.align(i2.B, n1.B, -40,  20)  # inverter precedes Nand
        s2.align(s2.B, i2.A, -50,   0)  # line up the gates

        n1.A.labelQuad = 3              # Label all the connectors
        n1.B.labelQuad = 2
        n1.C.labelQuad = 1
        i1.A.labelQuad = 2              # Inverter
        i1.B.labelQuad = 1
        i2.A.labelQuad = 3              # Inverter
        i2.B.labelQuad = 4
        s1.B.labelQuad = 1              # Switches
        s2.B.labelQuad = 1

        s.gates = (s1, s2, i1, i2, n1)
        s1.B.addWire(i1.A)
        s2.B.addWire(i2.A)
        i1.B.addWire(n1.A)
        i2.B.addWire(n1.B)
        n1.C.addWire( (n1.C.x(30), n1.C.y()))  # tail to see

if __name__ == "__main__":
    import gameloop
    from   settings import CmdScale
    circuit = TestOr(None, "TestOr", (100, 100), scale=CmdScale)
    gameloop.gameloop(circuit)