[SOLVED] rotate object from object location

Hey guys,

I’m trying to rotate an object to mouse direction using the atan2 but when i start to use ofRotate() that rotate the object from the canvas origem …
How can i do to rotate using the center of the object ?

Thanks !

    ofTranslate(location.x, location.y);  
    ofSetColor( 255,220,220 , 100);  
    ofEllipse(0, 0, r, r * 0.7);  
    ofSetColor( 255,220,220);  
    ofEllipse(0, 0, r, r * 0.6);