hello,

did you look at this:

http://www.processing.org/learning/trig/

Greetings, Chrisir  


Like this...

it's remade from the page above

1. /** Sine Console
2.  * Processing: Creative Coding and
3.  * Computational Art
4.  * By Ira Greenberg */
5. float py2;
6. float angle2;
7. float radius = 50;
8. float frequency2 = 2;
9. // used to create font
10. PFont myFont;
11. void setup() {
12.   size(600, 200);
13.   background (127);
14.   // generate processing font from system font
15.   myFont = createFont("verdana", 12);
16.   textFont(myFont);
17. }
18. void draw() {
19.   background (127);
20.   stroke(200);
21.   // keep reinitializing to 0, to avoid
22.   // flashing during redrawing
23.   angle2 = 0;
24.   // draw static curve - y = sin(x)
25.   for (int i = 0; i< width; i++) {
26.     py2 = 75 + sin(radians(angle2))*(radius);
27.     point(radius+i, py2);
28.     angle2 -= frequency2;
29.   }
30.   //
31. }