add_library('serial')
grid = [ [-1]*10  for n in range(10)] # list comprehension
grid[0][0] = 1
grid[9][9] = 1

w = 70 # width of each cell
nsamples = 100.0 # number of samples accumulated
WINDOW = 1000
def setup():
    #setup the serial port
    print Serial.list()
    portIndex = 4
    LF = 10

    #myPort = Serial(Serial.list()[portIndex], 9600)   # this seems to need a first argument referring to the sketch object (analagous to "this" argument in Java)
    portName = Serial.list()[len(Serial.list()) - 1] # Pick last serial port in list
    print "Connecting to ", portName
    global myPort
    myPort = Serial(this, portName, 9600)
    myPort.bufferUntil(LF)





    size(800,600)

def draw():

    byte2 = 0
    byte3 = 0
    byte4 = 0
    byte5 = 0
    byte6 = 0
    byte7 = 0
    byte8 = 0
    byte9 = 0
    byte10 = 0
    while (myPort.available() > 0):
        x,y = 0,0 # starting position

        for row in grid:
            for col in row:
                if (myPort.available() > 0):
                    byte1 = byte2
                    byte2 = byte3
                    byte3 = byte4
                    byte4 = byte5
                    byte5 = byte6
                    byte6 = byte7
                    byte7 = byte8
                    byte8 = byte9
                    byte9 = byte10
                    byte10 = myPort.read()


                low = myPort.read()
                med = myPort.read()
                high = myPort.read()
                value = abs((256*256*high + 256*med + low)/nsamples)
                xx = int(.2*WINDOW + (.9-.2)*WINDOW*value/1024.0)
                value = (255*255*high + 255*med + low)*255

                value = (byte1+byte2+byte3+byte4+byte5+byte6+byte7+byte8+byte9+byte10)
                println(xx)

                if col == 1:
                    fill(255,255,255)
                else:
                    fill(value,x,x)
                rect(x, y, w, w)
                x = x + w  # move right
            y = y + w # move down
            x = 0 # rest to left edge





def mousePressed():
    grid[mouseY/w][mouseX/w] = -1 * grid[mouseY/w][mouseX/w]
    # integer division is good here!

def serialEvent(evt):
    inString = evt.readString()
    print inString