kmeansinfoclustering.java

一个用于排队系统仿真的开源软件,有非常形象的图象仿真过程!

        int i;

        angle[0]=0;
        for(i=1;i<numClust;i++) angle[i]=angle[i-1]+(int)((360) * prc[i-1]);
        for(;i<angle.length;i++) angle[i]=360;
        final JLabel l = new JLabel();
        final pieChartIcon p = new pieChartIcon(numClust);
        l.addMouseMotionListener(new MouseMotionAdapter(){
        	public void mouseMoved(MouseEvent e)
        	{
        		int pos;
        		
        		pos=p.getPosXY(e.getX(),e.getY());
        		
        		if(pos!=-1) l.setToolTipText(tableClusters.getValueAt(pos,2).toString());
        		else l.setToolTipText("");
        	}
        });
        p.setAngle(angle);
        l.setIcon(p);
        return l;
    }
	
	private JLabel setPie2(int var)
    {
		int[] angle=new int[numClust];
		int i;
		
		angle[0]=0;
		for(i=1;i<numClust;i++){
			angle[i]=angle[i-1]+(int)((360) * info.infoCluster[i].percVar[var]);
		}
		for(;i<angle.length;i++){
			angle[i]=360;
		}
		
		final JLabel l = new JLabel();
		pieChartVars = new pieChartIcon(numClust);
        l.addMouseMotionListener(new MouseMotionAdapter(){
        	public void mouseMoved(MouseEvent e)
        	{
        		int pos;
        		
        		pos=pieChartVars.getPosXY(e.getX(),e.getY());
        		
        		if(pos!=-1) l.setToolTipText(tableVars.getValueAt(pos,1).toString());
        		else l.setToolTipText("");
        	}
        });
        pieChartVars.setAngle(angle);
        l.setIcon(pieChartVars);
        return l;
    }
	
	private class pieChartIcon implements Icon
    {
        private final int DIAMETRO=100;
        private int[] angle;
        private double centreX,centreY;

        public pieChartIcon (int numSpicchi)
        {
            centreX=0;
            centreY=0;
            angle=new int[numSpicchi+1];
        }

        public void setAngle(int[] posAngoli)
        {
            int i;
            for(i=0;i<angle.length-1;i++) angle[i]=posAngoli[i];
            angle[i]=360;
        }

        public int getIconWidth()
        {
            return DIAMETRO;
        }

        public int getIconHeight()
        {
            return DIAMETRO;
        }

        public void paintIcon(Component c, Graphics g, int x, int y)
        {
            float len=angle.length;

            centreX=x+(DIAMETRO/2);
            centreY=y+(DIAMETRO/2);
        	

            for(int i=0;i<len-1;i++)
            {
                g.setColor(JavaWatColor.getColor(i));
                g.fillArc(x,y,DIAMETRO,DIAMETRO,angle[i],angle[i+1]-angle[i]);
                g.setColor(Color.BLACK);
                g.drawArc(x,y,DIAMETRO,DIAMETRO,angle[i],angle[i+1]-angle[i]);
            }
        }
        
        public int getPosXY(int x,int y)
        {
            int ret=1;
            double angl;

            if(Math.sqrt(Math.pow((x-centreX),2)+Math.pow((y-centreY),2))>DIAMETRO/2) return -1;
            //if(x-centreX==0) return 0;
            angl= Math.toDegrees(Math.atan((centreY-y)/(x-centreX)));
            if(x<centreX) angl=180 + angl;
            if(angl<0) angl=360+angl;
            //System.out.println("ANGOLO= " + angl);
            for(;ret<angle.length;ret++) if(angl<angle[ret]) break;

            return (ret-1);
        }
    }
	
	/** MODEL PER TABELLA CLUSTER DETAILS **/
	private class clustDetModel extends AbstractTableModel{
		private String[] colHeader={"Cluster","Num. observations","Percentage",""};
		private int[] Elem = null;
		private double[] Perc = null;
		DinamicFormat f = new DinamicFormat("###.###%",0);	//????? CONTROLLARE A COSA E SE SERVE 
		
		public clustDetModel(int[] el,double perc[]){
			Elem = el;
			Perc = perc;
		}
		
		public int getRowCount() {
			return Elem.length; 
		}

		public int getColumnCount() {
			return colHeader.length;
		}

		public Object getValueAt(int rowIndex, int columnIndex) {
			if(rowIndex >= 0){
				if(columnIndex == 0) {
					return "Cluster " + (rowIndex+1);
				}
				if(columnIndex == 1) {
					return Integer.toString(Elem[rowIndex]);
				}
				if(columnIndex == 2) {
					return f.format(Perc[rowIndex]);
				}
				if(columnIndex == 3) {
					return JavaWatColor.getColor(rowIndex);
				}
			}
			return null;
		}
		
		/**
		 * Returns name for each column (given its index) to be displayed inside
		 * table header
		 */
		public String getColumnName(int columnIndex) {
			if (columnIndex < colHeader.length)
				return colHeader[columnIndex];
			else
				return null;
		}
		
		/**
		 * Tells wether data contained in a specific cell(given row and column
		 * index) is editable or not. In this case distribution column is not
		 * editable, as editing functionality is implemented via edit button
		 */
		public boolean isCellEditable(int rowIndex, int columnIndex) {
			return false;
		}
	}
	/** MODEL PER TABELLA VARIABLES DETAILS **/
	private class varsDetModel extends AbstractTableModel{
		private String[] colHeader={"Cluster","Perc",""};
		private double[] Perc = null;
		DinamicFormat f = new DinamicFormat("###.###%",0);	//????? CONTROLLARE A COSA E SE SERVE 
		
		public varsDetModel(double perc[]){
			Perc = perc;
		}
		
		public void setNewPerc(double[] p){
			Perc = p;
		}
		
		public int getRowCount() {
			return Perc.length; 
		}

		public int getColumnCount() {
			return colHeader.length;
		}

		public Object getValueAt(int rowIndex, int columnIndex) {
			if(rowIndex >= 0){
				if(columnIndex == 0) {
					return "Cluster " + (rowIndex+1);
				}
				if(columnIndex == 1) {
					return f.format(Perc[rowIndex]);
				}
				if(columnIndex == 2){
					return JavaWatColor.getColor(rowIndex);
				}
			}
			return null;
		}
		
		/**
		 * Returns name for each column (given its index) to be displayed inside
		 * table header
		 */
		public String getColumnName(int columnIndex) {
			if (columnIndex < colHeader.length)
				return colHeader[columnIndex];
			else
				return null;
		}
		
		/**
		 * Tells wether data contained in a specific cell(given row and column
		 * index) is editable or not. In this case distribution column is not
		 * editable, as editing functionality is implemented via edit button
		 */
		public boolean isCellEditable(int rowIndex, int columnIndex) {
			return false;
		}
	}
	
	private class ColorRenderer extends JLabel implements TableCellRenderer {
		public ColorRenderer(){
			setOpaque(true); //MUST do this for background to show up.
			setBorder(BorderFactory.createMatteBorder(2,5,2,5,Color.WHITE));
		}
		public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, 
				boolean hasFocus, int row, int column) {
			setBackground((Color)value);
			return this;
		}
		
	}
}