Ch03 Signatures

• Practice writing signatures.
• Write examples as you go.
• We did these one at a time.

Write signatures for:

1. overlay/align
2. text
3. ellipse

4. Write a possible signature for mystery:

   

5. Write a signature for magic described below.

   (magic (circle 40 "solid" "blue") 
          100)

   Produces two semi-transparent blue circles of radius 40:

   

   Aside: if they were solid blue, they would look like this:

   

6. Write a signature for overtext.

   (overtext "Banned" (scale 5 pic:stick-figure))

   

7. Write a signature for dimsum, which returns the sum of the length and width of each of its dimensions.

   (dimsum (rectangle 400 100 "solid" "blue")
           (cirlce 45 "outline" "green"))
   ==> 680