1. Test 2 on Wed, 11/9 On image processing
Allowed to use JES to test your code, but discouraged
Last day to withdraw with W: 11/15

2. Picture Functions ppp =makePicture(pickAFile())
ppp.getWidth(), ppp.getHeight()
xxx=ppp.getPixel( , )
xxx.getColor(), .getRed(), .getGreen(), .getBlue()
xxx.setColor(), .setRed(), .setGreen(), .setBlue()
makeColor(), pickAColor()

3. Some Utility Functions
If you know the name of the file, searching for it with pickAFile() is boring
You can set and get a media folder (path) in order to remember the folder where your media files are coming from (or going to)
setMediaPath() lets you pick your media folder and remember it
getMediaPath(“\test.jpg”) lets you generate a complete path of the filename from only the last part

4. Example >>> setMediaPath() New media folder: C:\mediasources\
>>> getMediaPath("barbara.jpg")
'C:\\mediasources\\barbara.jpg'
>>> barb=makePicture(getMediaPath("barbara.jpg"))

5. Additional Picture Functions
setMediaPath() – fix a path to media files
getMediaPath(filename)
file = makeEmptyPicture(100,100) – creates a blank picture of size 100x100
writePictureTo(file, getMediaPath()+“\100x100.jpg”) – save file with name “100x100.jpg”
canvas=makePicture(getMediaPath(“100x100.jpg”))

6. Picture Copy copy.py with Two pictures
‘pictA’ to copy to ‘pictB’ (pictB has to larger than pictA)
def picCopy(fromPic, toPic):
# for every pixel in fromPic, copy its colors to the same pixel location in the toPic
def main():
setMediaPath()
picA = makePicture(getMediaPath(“ “)
# get the width of picA
# get the height of picA
# create an empty picture, called picB, with the same dimension
picCopy(picA, picB)
repaint(pictB)

7. Copy flower1 to lower left corner
sourceX
sourceY
flower1
targetX = sourceX
targetY = sourceY + ?
? : getHeight(canvas) – getHeight(flower1)

8. Copy flower2 targetX = sourceX + getWidth(flower1)
sourceY
flower2
flower1
targetX = sourceX + getWidth(flower1)
targetY = sourceY + ?
? : getHeight(canvas) – getHeight(flower2)

9. Lab_1104 Create a large empty picture, called ‘canvas’
Modify picCopy() so that it has four arguments:
picCopy(fromPic, toPic, toX, toY)
where toX and toY are coordinates in toPic
from where pixels in fromPic have to be copied over
updated copy.py to