Well, why do you want to do it another way? What way are you thinking about?

sinus-cosinus

Code example:

1. int numSquares = 5; // press left and right mouse button to add & remove squares
   
2. float radius; // move the mouse over the X axis to increase & decrease the radius
   
3. 
   
4. void setup() {
5.   size(500,500);
6.   smooth();
7. }
8. 
   
9. void draw() {
10.   background(0);
11.   translate(width/2,height/2);
12.   radius = 30 + mouseX/3;
13.   for (int i=0; i<numSquares; i++) {
14.     pushMatrix();
15.     translate(sin(radians(i*360/numSquares))*radius,cos(radians(i*360/numSquares))*radius);
16.     rect(0,0,10,10);
17.     popMatrix();
18.   }
19.   if (mousePressed) {
20.     if (mouseButton == LEFT) { numSquares++; }
21.     else if (mouseButton == RIGHT && numSquares >= 1) { numSquares--; }
22.   }
23. }

This way might be ok, but it brings some problems. I'll try to explain myself.

Think about squares as objects, I need to display a line from the center of the circle (or ellipse, how can I display them along an ellipse and not a circle ? But let's ot focus on that already...) to each square. To do that I need the xpos and ypos of each square so that I can easily display that line.

My idea was to find (I think it's not that simple but I'm developing an idea) a mathematical way to define the xpos and ypos of each object (just to make an example think about the equation of a circle, if I know the xpos and ypos of the center and the radius I can determine the position of a point along the circle) so that each object has its own xpos and ypos. In this way it's pretty simple to draw a line from the center to each object (object.xpos , object.ypos ).

I'll have the same problem with the dragging, 'cause it's based on the xpos and ypos of each object.

Thank you again guys =D

=D

Thank you I'll give it a try...and yes, now I feel stupid =(

PS = Aha..it works..thank you again ;)