circle loop?

[cid11]

I am trying to make some code which creates 5 set of circles. But this is the best i could do

00000(all red)
00000(all white)
00000(all red)
00000(all white)

from graphics import *
 
def main():
    win = GraphWin("My Circle", 300, 300)
    # count backwards
    for k in range(6, 1, -1):
        c = Circle(Point(150,150), 20*k)
        # alternate
        if k % 2 == 0:
            c.setFill('red')
        else:
            c.setFill('white')
        c.draw(win)
 
    win.getMouse() # pause for click in window
    win.close()
 
main()
 

[bvdet]

@cid11
cid11,

Do you have a question or does it not work the way you want?

[cid11]

sorry i posted in a hurry so none of tht make sense...it works but not the way i want it to.. now it does concentric circles.. but i want it to have seperate circles as i have tried to show below.. any help would be appreciated..

00000(all red)
00000(all white)
00000(all red)
00000(all white)

[bvdet]

cid11,

You want the circles to be the same size organized in rows and columns. Alternate the color for each row. Calculate the size of the canvas based on the number of rows and columns and the size of the circle. Iterate on the number of rows and the number of columns in a nested for loop. Calculate the position of each circle using the row number (Y direction) and the column number (X direction).


Here's part of some sample code:

    win = GraphWin("My Circle", length, height)
    for row in range(rows):
        for col in range(cols):
            x = size+col*size
            y = size+row*size
            c = Circle(Point(x,y), size/2)

[cid11]

@bvdet
so wht does the sample code u gave do?

[bvdet]

The sample code does part of what I described in my previous post. Do understand what a for loop is?

[cid11]

yup i kinda understand what a for loop is.. but a bit rusty on python as i am retaking a module and had studied it in sept and just learned java.. what exactly would I have to do? to complete what i want the program to do?

thx

[bvdet]

Before the sample code you need to calculate length and height and assign a value to size. After the sample code, you need an if/else block to decide on the color. The rest is the same as your original code.

[cid11]

So the length and height are to calculate the size of the graphic window according to the number of circles required? could I use the if and else from the previous code I gave? and do I keep my orignal code and add code to it and remove and add?

thx

[cid11]

for the size of the graphic window.. would it be

size of the window - ((number of circles + 1) * spacing)) / number of circles