from Myro import *
init()
pic = takePicture()
show(pic)

picWidth = getWidth(pic)
picHeight = getHeight(pic)
print ("Image WxH is", picWidth, "x", picHeight, "pixels.")

savePicture(pic, "OfficeScene.jpg")

savePicture(pic, "OfficeScene.gif")

mySavedPicture = makePicture("OfficeScene.jpg")
show(mySavedPicture)

mySavedPicture = makePicture(pickAFile())
show(mySavedPicture)

grayPic = takePicture("gray")
show(grayPic)

joystick()
for i in range(25):
  pic = takePicture("gray")
  show(pic)

pic1 = takePicture()
turnLeft(0.5,0.25)
pic2 = takePicture()
turnLeft(0.5,0.25)
pic3 = takePicture()
turnLeft(0.5,0.25)
pic4 = takePicture()

listOfPictures = [pic1, pic2, pic3, pic4]

savePicture(listOfPictures, "turningMovie.gif")

pictureList = []  #Start with an empty list.
for i in range(15):
  pic = takePicture()
  pictureList = pictureList + [pic]   #Append the new picture
  turnLeft(0.5,0.1)

savePicture(pictureList,"rotatingMovie.gif")

W = H = 100
newPic = makePicture(W, H, makeColor("black"))
show(newPic)

for x in range(W):
   for y in range(H):
      pixel = getPixel(newPic, x, y)
      setColor(pixel, makeColor("white"))

myRed = makeColor(255, 0, 0)

myColor = pickAColor()

setRGB(pixel, (255, 0, 0))

r, g, b = getRGB(pixel)

for pixel in getPixels(newPic):
    setColor(pixel, makeColor("gray"))

def gray(v):
    # returns an rgb gray color for v
    return makeColor(v, v, v)

def main():
    MAX = 255
    W = 100
    H = 100
    # Create the blank image
    myPic = makePicture(W, H)
    show(myPic, "Shades of Gray")
    # Fill in each pixel with x+y shade of gray
    for x in range(W):
        for y in range(H):            
            setPixel(myPic, x, y, gray((x+y)%(MAX+1)))
main()

MAX = 50
def gray(v):
    # returns an rgb gray color for v
    brightness = v*255/MAX 
    return makeColor(brightness, brightness, brightness)

def main():
    # read an image and display it
    oldPic = makePicture(pickAFile())
    show(oldPic, "Before")

    X = getWidth(oldPic)
    Y = getHeight(oldPic)
    # Input the shrink factor and computer size of new image
    F = int(ask("Enter the shrink factor."))
    newx = X/F
    newy = Y/F
    # create the new image
    newPic = makePicture(newx, newy)
    for x in range(newx):
        for y in range(newy):
            setPixel(newPic, x, y, getPixel(oldPic, x*F, y*F))
    show(newPic, "After")    


for x in range(X):
    for y in range(Y):
        pixel = getPixel(oldPic, x, y)
        v = MAX - getRed(pixel)
        setPixel(newPic, x, y, gray(v))

p = takePicture()
show(p)
for pixel in getPixels(p):
    r, g, b = getRGB(pixel)
    if r > 200 and g < 100:
        setRGB(pixel, (255, 255, 255))
    else:
        setRGB(pixel, (0, 0, 0))

def locateBall(picture):
    tot_x = 0
    count = 0
    for pixel in getPixels(p):
        r, g, b = getRGB(pixel)
        if r > 200 and g < 100:
            tot_x = tot_x + getX(pixel)
            count = count + 1
    return tot_x/count

def main():
    for t in timer(T):
        # take picture and locate the ball
        pic = takePicture()
        ballLocation = locateBall(pic)

        if ballLocation <= 85:
            turnLeft(cruiseSpeed)
        elif ballLocation <= 170:
            forward(cruiseSpeed)
        else:
            turnRight(cruiseSpeed)

pic = takePicture("blob")

onPixels, avgX, avgY = getBlob()

def exercise1():
    for x in range (1, W):
        for y in range(1, H):
            r, theta = polar(x, y)
            setPixel(myPic, x, y,
            gray((((r+theta)%16)-8)*MAX/16+MAX/2))