It's not a secret anymore!*
The moose likes Swing / AWT / SWT and the fly likes Drawing Problem Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of Murach's Java Servlets and JSP this week in the Servlets forum!
JavaRanch » Java Forums » Java » Swing / AWT / SWT
Bookmark "Drawing Problem" Watch "Drawing Problem" New topic

Drawing Problem

Stanley Gulavi

Joined: Apr 25, 2009
Posts: 5
I am trying to solve a graphics problem. I need an algorithm for drawing an image made up of a large circle (100 pixel diameter) in the middle
and around this circle, there should be smaller (25 pixel diameter) circles. there should be a 5 pixel separation between the large circle and the orbiting circles.
The problem I am grappling with is that the outer circles need to be set at equal distances around the the circle at the center, and the number of orbiting
circles is not fixed and can be varied, hence varying the separation of the outer circles, and to be honest, I have
absolutely no idea on how to go about this. All I can do is draw basic shapes.
Any help would be appreciated.
Please pardon this long winded narrative.


The night is not no light, it is darkness visible.
Omar Al Kababji
Ranch Hand

Joined: Jan 13, 2009
Posts: 357
Ok so the big circle is 100 pixel diameter and the orbiting ones should be 25 of diameter and a 5 pixels separation which leads that the orbiting circles should be placed on the circumference of a helping circle (lets named it X-circle) of a radius of 100/2 + 25/2 + 5 = 67.5 and concentric with the 100 pixel circle.

now you know where to place the orbits, but you need to put them at equal distances between each others to do this you need to make the following calculation where "n" is the number of orbiting circuits required. you could use the following pseudocode

if you try it on a piece of paper by hand you will get a clear idea, have fun with that

Omar Al Kababji - Electrical & Computer Engineer
[SCJP - 90% - Story] [SCWCD - 94% - Story] [SCBCD - 80% - Story] | My Blog
Rob Camick
Ranch Hand

Joined: Jun 13, 2009
Posts: 2152
Cross posted:
Campbell Ritchie

Joined: Oct 13, 2005
Posts: 37926
Rob Camick wrote:Cross posted: . . .
Thank you for noticing.

Stanley Gulavi Please read this.
Stanley Gulavi

Joined: Apr 25, 2009
Posts: 5
Thanks guys. I have gotten it to work.
And sorry about the cross-posting. Won't happen again.
Consider Paul's rocket mass heater.
subject: Drawing Problem
Similar Threads
Annulus Problem
drawing in graphics
can someone kindly check my math...
How do I save a variable value -Unsolved-
Help in Algorithm Construction