How To Draw Circles In Python

Question

Yous can use Turtle. Here is a simple example:

          import turtle       t = turtle.Turtle()  #This role draw a circle in x,y of radius r def drawCircle(10,y,r):     t.pu()     t.goto(x,y-r) #-r considering we desire xy as center and Turtles starts from border     t.pd()     t.circumvolve(r)   #describe a circle in (50,thirty) with r=fifty drawCircle(fifty,30,50)  #draw a circle in (20,50) with r=100 drawCircle(20,50,100)  #depict a circle in (0,0) with r=10 drawCircle(0,0,x) #0,0 is the eye of the screen

This volition be your output: Note that the betoken (0,0) is the centre of the screen. Information technology uses Cartesian coordinates!

output

You can also change a lot of graphics things (color, line-width, etch...) in Turtle. Meet the documentation.

UPDATE

Your dimensions cannot be in micro meter: when you describe using Turtle or whatsoever other library the dimensions are espressed in pixels! If you want to use other measure out unit, you have to convert all your values (x, y and r) in the new measure unit.

If y'all just want to zoom the image, attempt to multiply x,y and r for a fixed number. Let's do an example:

          import turtle       t = turtle.Turtle() t.hideturtle() #this hides the arrow t.speed(0) #turn off blitheness  #This office describe a circle in x,y of radius r zoomed by a due north gene def drawZoomedCircle(x,y,r,due north):     t.pu()     t.goto(ten*n,(y-r)*n) #-r considering we want xy as eye and Turtles starts from border     t.pd()     t.circle(r*due north)  n=1  drawZoomedCircle(5,3,1,northward) drawZoomedCircle(two,v,3,n) drawZoomedCircle(0,0,0.two,n)

The number n is a "zoom factor". When n=one you accept:

example 1