public class BarGroup extends ChartObject{
  
  private ArrayList<ChartObject> bars;
  private color m_color;
  private int gap;
  
/******************************************
  Constructors
******************************************/
  
  public BarGroup(color barColor){
    m_color = barColor;
    bars = new ArrayList<ChartObject>();
  }
  
  public BarGroup(color barColor, String label){
    m_color = barColor;
    m_label = label;
    tickSize = DEFAULT_TICK_SIZE;
    x_tick = true;
    bars = new ArrayList<ChartObject>();
  }
  
  public BarGroup(color barColor, ArrayList<ChartObject> aList){
    bars = aList;
    m_color = barColor;
    
  }
  
  public BarGroup(color barColor,String label, ArrayList<ChartObject> aList){
     m_label = label;
     tickSize = DEFAULT_TICK_SIZE;
     bars = aList;
  }
  
  public void addBar(float mean,float margin,int n){
   bars.add(new Bar(mean,m_color,margin,n));
  }//end addBar
    
  public void addBar(float mean,float margin,int n,String label){
    bars.add(new Bar(mean,m_color,margin,n,label));
  }//end addBar  
  
  public void addBar(Bar aBar){
    bars.add(aBar);
  }
  
  public void addGradient(float mean,float margin,int n){
   bars.add(new Gradient(mean,m_color,margin,n));
  }//end addBar
    
  public void addGradient(float mean,float margin,int n,String label){
    bars.add(new Gradient(mean,m_color,margin,n,label));
  }//end addBar  
  
  public void addGradient(Gradient aBar){
    bars.add(aBar);
  }
  
  public void addViolin(float mean,float margin,int n){
   bars.add(new Violin(mean,m_color,margin,n));
  }//end addBar
    
  public void addViolin(float mean,float margin,int n,String label){
    bars.add(new Violin(mean,m_color,margin,n,label));
  }//end addBar  
  
  public void addViolin(Violin aBar){
    bars.add(aBar);
  }
  
  
  public void addDot(float mean,float margin,int n){
   bars.add(new Dot(mean,m_color,margin,n));
  }//end addBar
    
  public void addDot(float mean,float margin,int n,String label){
    bars.add(new Dot(mean,m_color,margin,n,label));
  }//end addBar  
  
  public void addDot(Dot aBar){
    bars.add(aBar);
  }
  
  public void addBox(float mean,float margin,int n){
   bars.add(new Box(mean,m_color,margin,n));
  }//end addBar
    
  public void addBox(float mean,float margin,int n,String label){
    bars.add(new Box(mean,m_color,margin,n,label));
  }//end addBar  
  
  public void addBox(Box aBar){
    bars.add(aBar);
  }
  
  public void setGap(int newGap){
    gap = newGap;
  }

/******************************************
  Draw Method
******************************************/
  public void draw(int curX,int objWidth,float startY,float endY,float dataMin,float dataMax){
    int curBarX = curX;
    if(m_label !=null){
        stroke(0);
        line(curX,startY+tickSize+textAscent(),curX,startY+tickSize+(textAscent())+5);
        line(curX+objWidth,startY+tickSize+textAscent(),curX+objWidth,startY+tickSize+(textAscent())+5);
        line(curX,startY+tickSize+textAscent()+5,curX+objWidth,startY+tickSize+(textAscent())+5);
        stroke(0,64);
        line(curX,startY,curX,endY);
        line(curX+objWidth,startY,curX+objWidth,endY);
        text(m_label,curX+(objWidth/2.0)-(textWidth(m_label)/2.0),startY+tickSize+(2*textAscent())+10);
    }
    if(bars.size()>0){
      curBarX+=2*gap;
      int perBar = floor((objWidth-(2*gap))/bars.size());
      int barWidth = perBar - (2*gap);
      for(ChartObject aBar:bars){
        aBar.draw(curBarX,barWidth,startY,endY,dataMin,dataMax);
        curBarX+=perBar;
      }//end for
      
      
    }//end if
  }//end draw
  
}//end class