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newbie problem (Read 429 times)
yeolesquid
newbie problem
May 14th, 2006, 8:20pm  
Hi everyone!  I'm a newcomer to Processing and programing in general. I am trying to write a simple code that offsets a circle from the center and have the circle rotate around it.  I have the math portion right however i cannot seem to figure out how to animate the circle moving. Heres what i have so far..

void setup () {
 size (200,200) ;
 stroke (255) ;
 noFill () ;
 framerate (30) ;
}

void draw () {
 background (0);
 float rOne=20; // ellipse size
 float rTwo; // distance from center
 float theta;
 
 rTwo = rOne/(sqrt(3)/2);
 
 for (int i=0; i<360; i++) {
   theta = radians(i);
   ellipse (width/2+(cos(theta)*rTwo), height/2+(sin(theta)*rTwo),rOne,rOne);
 }
}

I'm still learning programing logistics so anyone who may ellucidate on my situation would be greatly appreciated! Feel free to ellaborate.  Thanks in advanced!
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funkopatomus  
mark hill
Re: newbie problem
Reply #1 - May 14th, 2006, 8:29pm  
this will get it moving. You were drawing it 360 times per frame:

Code:


   theta = radians(rot);
    ellipse (width/2+(cos(theta)*rTwo), height/2+(sin(theta)*rTwo),rOne,rOne);

    rot = rot+1%360;
} 

float rot;
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yeolesquid
Re: newbie problem
Reply #2 - May 14th, 2006, 9:28pm  
That makes sense, thanks a million!
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funkopatomus  
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