# Connect the dots program.
# responds to clicks by connecting the dots when same point is clicked again, 
# make and fill a polygon.

import math, time
import zellegraphics as zg

TOLERANCE = 5
# Defines the mathematical distance formula between the points "point1" and 
# "point2"
def distance(point1, point2):
    return 0

# Draws a "Point" as seen by the user on the screen. The point that appears is
# a magenta-filled circles with a radius of "TOLERANCE"
def drawPoint (p):
   pass
    
# Test the distance formula
def tests():
    p1 = zg.Point(1,7)
    p2 = zg.Point(4, 11)
    p3 = zg.Point(-1, 23)
    print('Distances (should be 5 and 13): ', \
        distance(p1, p2), distance (p2, p3))

# Run the main loop of the program. Create a window and wait for clicks 
# from the user. Then, draw points on the screen (using the drawPoint 
# function) at the locations that the user clicks. If the point clicked is
# within the TOLERANCE of the first point (would overlap the first point 
# when drawn), then the shape is finished. A polygon is created using the 
# points that were clicked (and stored in a list) and that polygon is filled
# in green.
win = zg.GraphWin("Connect the dots", 400, 400)
pointList = []

    
win.getMouse()
win.close()