CSC111 Lab 9 Solutions 2011

--D. Thiebaut 15:51, 2 November 2011 (EDT)

---

Graphics

With Coordinates

from graphics import *


def isInside( xc, yc, x1, y1, x2, y2 ):
    if x1 <= xc <= x2 and y1 <= yc <= y2:
        return 1
    return 0

def main():
    w = 600
    h = 400
    x1 = 20
    y1 = 30
    x2 = w // 3
    y2 = h - y1
    win = GraphWin( "Click me to stop!", w, h )


    c = Circle( Point( w//2, h//4 ), 20 )
    c.setFill( "yellow" )
    c.draw( win )

    r = Rectangle( Point( x1, y1 ), Point( x2, y2 ) )
    r.setWidth(3)
    r.draw( win )

    dirX = 5
    dirY = 3
    
    while True:
        c.move( dirX, dirY )
        xc = c.getCenter().getX()
        yc = c.getCenter().getY()
        if not ( 0 <= xc <= w ): dirX = -dirX
        if not ( 0 <= yc <= h ): dirY = -dirY
        
        if isInside( xc, yc, x1, y1, x2, y2 )== 1:
            # center inside rectangle
            c.setFill( "red" )
        else:
            # center outside rectangle
            c.setFill( "yellow" )

        if win.checkMouse() != None:
            break

    win.close()

main()

with points

from graphics import *


def isInside( center, P1, P2 ):
    if ( P1.getX() <= center.getX() <= P2.getX() 
    and P1.getY() <= center.getY() <= P2.getY() ):
          return 1
    return 0

def main():
    w = 600
    h = 400
    x1 = 20
    y1 = 30
    x2 = w // 3
    y2 = h - y1
    win = GraphWin( "Click me to stop!", w, h )


    c = Circle( Point( w//2, h//4 ), 20 )
    c.setFill( "yellow" )
    c.draw( win )

    P1 = Point( x1, y1 )
    P2 = Point( x2, y2 )
    r = Rectangle( P1, P2 )
    r.setWidth(3)
    r.draw( win )

    dirX = 5
    dirY = 3
    
    while True:
        c.move( dirX, dirY )
        xc = c.getCenter().getX()
        yc = c.getCenter().getY()
        if not ( 0 <= xc <= w ): dirX = -dirX
        if not ( 0 <= yc <= h ): dirY = -dirY
        
        if isInside( c.getCenter(), P1, P2 )== 1:
            # center inside rectangle
            c.setFill( "red" )
        else:
            # center outside rectangle
            c.setFill( "yellow" )

        if win.checkMouse() != None:
            break

    win.close()

main()

With Objects

from graphics import *


def isInside( circle, rect ):
    if ( rect.getP1().getX() <= circle.getCenter().getX() <= rect.getP2().getX() 
    and rect.getP1().getY() <= circle.getCenter().getY() <= rect.getP2().getY() ):
          return 1
    return 0

def main():
    w = 600
    h = 400
    x1 = 20
    y1 = 30
    x2 = w // 3
    y2 = h - y1
    win = GraphWin( "Click me to stop!", w, h )


    c = Circle( Point( w//2, h//4 ), 20 )
    c.setFill( "yellow" )
    c.draw( win )

    P1 = Point( x1, y1 )
    P2 = Point( x2, y2 )
    r = Rectangle( P1, P2 )
    r.setWidth(3)
    r.draw( win )

    P1 = Point( x1+300, y1 )
    P2 = Point( x2+300, y2 )
    r2 = Rectangle( P1, P2 )
    r2.setWidth( 3 )
    r2.draw( win )


    dirX = 5
    dirY = 3
    
    while True:
        c.move( dirX, dirY )
        xc = c.getCenter().getX()
        yc = c.getCenter().getY()
        if not ( 0 <= xc <= w ): dirX = -dirX
        if not ( 0 <= yc <= h ): dirY = -dirY
        
        if isInside( c, r  )== 1:
            # center inside rectangle
            c.setFill( "red" )
        elif isInside( c, r2 ) == 1:
            c.setFill( "blue" )
        else:
            # center outside rectangles
            c.setFill( "yellow" )

        if win.checkMouse() != None:
            break

    win.close()

main()