Drwaing Circles?

[jaison2]

hi, i want to be able to draw two eyes with are exactly the same in radius and colour etc next to eachother. So when i open the window the pair of eyes are there in the centre. I have managed to get one eye but i dnt have a clue to how to get one beside it, i am not sure hw to.. here is my code for the first eye and function should be calling the drawCircle six times.
please help

from graphics import *
import math
def drawCircle(win, centre, radius, colour):
circle = Circle(centre, radius)
circle.setFill(colour)
circle.setWidth(2)
circle.draw(win)

def drawTarget():
win = GraphWin()
centre = Point(100,100)
drawCircle(win, centre, 40, "white")
drawCircle(win, centre, 20, "blue")
drawCircle(win, centre, 10, "black")

[vegaseat]

One eye has to be positioned center_left, the other center_right ...

from graphics import *
import math

def drawCircle(win, centre, radius, colour):
    circle = Circle(centre, radius)
    circle.setFill(colour)
    circle.setWidth(2)
    circle.draw(win)

def drawTarget():
    win = GraphWin()
    centre_left = Point(50,100)
    centre_right = Point(150,100)
    drawCircle(win, centre_left, 40, "white")
    drawCircle(win, centre_left, 20, "blue")
    drawCircle(win, centre_left, 10, "black")
    drawCircle(win, centre_right, 40, "white")
    drawCircle(win, centre_right, 20, "blue")
    drawCircle(win, centre_right, 10, "black")    
    # this keeps the window up/open
    win.getMouse()

drawTarget()

For those who don't know ...

John Zelle, Ph.D. teaches Python at Wartburg College
he is the author of graphics.py used by a number of schools instead
of Tkinter

Here is the graphics module (a thin wrapper for Tkinter) ...
http://mcsp.wartburg.edu/zelle/python/graphics.py
also has a nice documentation ...
http://mcsp.wartburg.edu/zelle/python/graphics/graphics.pdf

http://mcsp.wartburg.edu/zelle

Founded in 1852, Wartburg College is a nationally recognized selective
four-year liberal arts college of the Evangelical Lutheran Church in
America.

Wartburg College
100 Wartburg Blvd.
Waverly, IA 50677
[phone]

"Be Orange"

At this point in time module graphics.py works with Python2 only.
Install graphics.py in your working directory or the Lib/site-packages directory.

[jaison2]

but hw would you get them in the exact centre of the graphics window.. is this fine?

from graphics import *
import math

def drawCircle(win, centre, radius, colour):
    circle = Circle(centre, radius)
    circle.setFill(colour)
    circle.setWidth(2)
    circle.draw(win)

def drawTarget():
    win = GraphWin()
    centre_left = Point(60,100)
    centre_right = Point(140,100)
    drawCircle(win, centre_left, 40, "white")
    drawCircle(win, centre_left, 20, "blue")
    drawCircle(win, centre_left, 10, "black")
    drawCircle(win, centre_right, 40, "white")
    drawCircle(win, centre_right, 20, "blue")
    drawCircle(win, centre_right, 10, "black")    
    # this keeps the window up/open
    win.getMouse()

drawTarget()

[vegaseat]

One way would be to say that the center should be at 1/2 width and height of the drawing window ...

from graphics import *

def drawCircle(win, centre, radius, colour):
    circle = Circle(centre, radius)
    circle.setFill(colour)
    circle.setWidth(2)
    circle.draw(win)

def drawTarget():
    w = 250
    h = 250
    win = GraphWin("Spooky Eyes", w, h)
    # center should be at 1/2 width and height
    center_w = w//2
    center_h = h//2
    centre_left = Point(center_w - 50, center_h)
    centre_right = Point(center_w + 50, center_h)
    drawCircle(win, centre_left, 40, "white")
    drawCircle(win, centre_left, 20, "blue")
    drawCircle(win, centre_left, 10, "black")
    drawCircle(win, centre_right, 40, "white")
    drawCircle(win, centre_right, 20, "blue")
    drawCircle(win, centre_right, 10, "black")    
    # this keeps the window up/open
    win.getMouse()

drawTarget()

[jaison2]

thankyou.. that makes sense nw.. had to tweak code a bit more for my requirements.. thx a lot..

[jaison2]

can i quickly just ask a question, would we be able to shrink the code anymore if it was just for one eye?.. as it has repetitive code?

[vegaseat]

One eye would make it simpler ...

from graphics import *

def drawCircle(win, centre, radius, colour):
    circle = Circle(centre, radius)
    circle.setFill(colour)
    circle.setWidth(2)
    circle.draw(win)

def drawTarget():
    w = 250
    h = 250
    win = GraphWin("One Spooky Eye", w, h)
    # center should be at 1/2 width and height
    centre = Point(w//2, h//2)
    drawCircle(win, centre, 40, "white")
    drawCircle(win, centre, 20, "blue")
    drawCircle(win, centre, 10, "black")
    # click mouse to go on
    win.getMouse() 
    win.close()

drawTarget()

You can streamline the whole thing a little more using a for loop ...

# draw one spooky eye in the center of the drawing window
# calculate the center from width, height

from graphics import *

def drawCircle(win, centre, radius, colour):
    circle = Circle(centre, radius)
    circle.setFill(colour)
    circle.setWidth(2)
    circle.draw(win)

def drawTarget():
    w = h = 250
    win = GraphWin("One Spooky Eye", w, h)
    # center should be at 1/2 width and height
    centre = Point(w//2, h//2)
    for radius, color in ((40,"white"), (20,"blue"), (10,"black")):
        drawCircle(win, centre, radius, color)
    # click mouse to go on
    win.getMouse() 
    win.close()

drawTarget()

Stop before the code gets too cryptic and hard to read and understand.