This will fill a circle on the screen.
Draws a filled circle, at the location given.
'diameter' is used for both the width and height of the circle.
* Draws a range of filled circles.
x = 20
10.times() do |i|
diameter = 10 + 7*i
fillCircle( x, 190, diameter, true )
x = x + 20 + diameter
The same 'fillCircle' function, but with x and y alignment options. See the article on How Alignment Works for details.