Difference between revisions of "CSC111 Lab 11 2015"
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</source> | </source> | ||
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| − | =Problem 2= | + | =Problem 2: Presidents= |
<br /> | <br /> | ||
Below is a CSV list (coma-separated values) of past presidents. Using similar Python code as you have used for the previous problem, process this list and output: | Below is a CSV list (coma-separated values) of past presidents. Using similar Python code as you have used for the previous problem, process this list and output: | ||
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</source> | </source> | ||
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| − | =Rectangles with Labels Inside= | + | =Problem 3: Class Inheritance: Rectangles with Labels Inside= |
| + | <br /> | ||
| + | ::<source lang="python"> | ||
| + | # lab11_3.py | ||
| + | # D. Thiebaut | ||
| + | # A graphic program with a new MyRect class that is derived from | ||
| + | # the Rectangle class in the graphics.py library. | ||
| + | |||
| + | from graphics import * | ||
| + | |||
| + | # window geometry | ||
| + | WIDTH = 600 | ||
| + | HEIGHT = 400 | ||
| + | |||
| + | |||
| + | class MyRect( Rectangle ): | ||
| + | """MyRect: a class that inherits from Rectangle, in graphics.py""" | ||
| + | |||
| + | def __init__( self, p1, p2, labl ): | ||
| + | """constructor. Constructs a rectangle with a text label in its center""" | ||
| + | |||
| + | # call the Rectangle constructor and pass it the 2 points | ||
| + | Rectangle.__init__( self, p1, p2 ) | ||
| + | |||
| + | # put a label at a point in-between p1 and p2. | ||
| + | midPoint = Point( (p1.getX()+p2.getX())/2, | ||
| + | (p1.getY()+p2.getY())/2 ) | ||
| + | self.label = Text( midPoint, labl ) | ||
| + | |||
| + | def draw( self, win ): | ||
| + | """draw the rectangle and the label on the window.""" | ||
| + | # call the draw() method of the rectangle class to draw the rectangle | ||
| + | Rectangle.draw( self, win ) | ||
| + | |||
| + | # then draw the label on top | ||
| + | self.label.draw( win ) | ||
| + | |||
| + | def main(): | ||
| + | # open the window | ||
| + | win = GraphWin( "CSC Aquarium", WIDTH, HEIGHT ) | ||
| + | |||
| + | # create an object of type MyRect with the string "CSC111" in the middle | ||
| + | r1 = MyRect( Point( 100, 100 ), Point( 200, 200 ), "CSC111" ) | ||
| + | r1.setFill( "Yellow" ) | ||
| + | r1.draw( win ) | ||
| + | |||
| + | # close the window when the user clicks the mouse | ||
| + | win.getMouse() | ||
| + | win.close() | ||
| + | |||
| + | main() | ||
| + | |||
| + | </source> | ||
| + | |||
| + | <br /> | ||
=Circles with Labels Inside= | =Circles with Labels Inside= | ||
