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Need urgently help - sinus fluctuations

[3 Replies]
- 27-Nov-2012 03:21 AM
- Forum: Programming Questions
Hi everybody,

i'm working on my bachelorthesis, in which i'm working with lissajous-figures an I'm a beginner in programming.

Here my problem:

Some strange things seem to happen to my figures when i run the sketch: the frequency ratio changes suddenly.

I want to draw different kinds of frequency ratios, but the have to be constant until i want to change them.

Can somebody help me?

Here is the code:

float x = 0;

float y = 0;

float a = 8;

float b = 2;

float ar = 0;

void setup() {

size(500,400);

background(0);

frameRate(25);

smooth();

}

void draw(){

background(0);

translate(250, 200);

noFill();

stroke(50);



for(int i=0;i<2000;i=i+1){

x = x + sin(a)*1;

y = y + sin(b)*1;

stroke(255);

strokeWeight(1);



point(x,y);

a=a+0.01;

b=b+0.025;



}

}

Thank you!

Judith

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