class ring{
  int Nsegments;
  float innerradius, outerradius, zeroangle, centerx, centery, dadt;
  segment[] segments;


  ring(){
    Nsegments=0;
    centerx=centery=innerradius=outerradius=zeroangle=dadt=0.0f;  
  }

  ring(float cx, float cy, float ir, float or, float za, int N){
    centerx=cx;
    centery=cy;
    innerradius=ir;
    outerradius=or;
    Nsegments=N;
    zeroangle=za;
    dadt=random(-PI/360.0f,PI/360.0f);
    segments=new segment[Nsegments];
    for(int i=0;i<Nsegments;i++){
      segments[i]=new segment(centerx,centery,innerradius,outerradius, zeroangle+2.0f*PI*(float)i/(float)Nsegments,zeroangle+2.0f*PI*(float)i/(float)Nsegments+2.0f*PI/Nsegments);
    }
  }
  
  void draw(){
    for(int i=0;i<Nsegments;i++){
      segments[i].polydraw();
    }

  }

  void update(){
    for(int i=0;i<Nsegments;i++){
      segments[i].rotate(dadt);
    }
    }


}