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Rotate (Read 760 times)
MCmike
Rotate
Sep 29th, 2009, 5:03pm  
For the life of me I cannot find what is wrong with the code I wrote. It is meant to rotate (spin) Zoog on the center but for some reason he moves around the center. I've tried comparing to the example but it looks exactly the same to me. Maybe another set of eyes can catch what I can't.





float theta = 0.0;

void setup () {
 size (200, 200);
}

void draw() {
 background (255);

translate (width/2,height/2);
rotate (theta);
 ellipseMode (CENTER);
 rectMode (CENTER);

// Zoog's Body
stroke (0);
fill (150);
rect (100, 100, 20, 100);

//Zoog's head
stroke (0);
fill (255);
ellipse (100, 70, 60, 60);

//Zoog's eyes
fill (0);
ellipse (81, 70, 16, 32);
ellipse (119, 70, 16, 32);

//Zoog's legs
line (90, 150, 80, 160);
line (110, 150, 120, 160);


theta += 0.02;
}
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Cedric
Re: Rotate
Reply #1 - Sep 29th, 2009, 5:23pm  
the problem is, that you draw your Zoog in the middle of the screen, but processing rorates arround (0,0); that means you have to translate it, and then rotate it. and then translate back to the middle

so just add another translate (-width/2,-height/2);
and it should work
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MCmike
Re: Rotate
Reply #2 - Sep 29th, 2009, 5:25pm  
Wow, I could have sworn I tried that and it didn't work. Maybe another little mistake on my part. Thank you very much. Saved me hours of misery.
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