Thread: Help with pie chart

I use Guiapp class and plot button that plot the charts of Drawing Canvas class( which draw the pies)

Is this code correct:
String cmd = "arc" x + " " + y + " " + theta + " " + color;

I want it to contain the DArray of cols and rows that is in the file text

That what I have in DrawingCanvas class,but I do not how to do PlotButtonAction class that plots the pie charts.

public class DrawingCanvas extends JPanel {

int width;
int height;
ActionContainer acRef = null;

DrawingCanvas(int width, int height, ActionContainer acRef) {
this.acRef = acRef;
this.width = width;
this.height = height;
}

public DrawingCanvas(BorderLayout borderLayout) {

}

private void execute(String actionLine, Graphics g) {
System.out.println("action=" + actionLine);

String array[] = actionLine.split(" ");
/*Color cArray[] = {
Color.red,
Color.white,
Color.blue,
Color.green,
Color.black
};*/
int xCenter = getWidth()/ 2;
int yCenter = getHeight()/ 2;
int radius = (int) (Math.min(getWidth(), getHeight()) * 0.4);
int x1 = xCenter - radius;
int y1 = yCenter - radius;
int x2 = xCenter - radius;
int y2 = yCenter - radius;
int x3 = xCenter - radius;
int y3 = yCenter - radius;


DArray[] slices= null;
double total = 0.0D;
for (int i=0; i<slices.length; i++) {
total += slices[i].value;
}


double curValue = 0.0D;
int startAngle = 0;
for (int i=0; i<slices.length; i++) {

startAngle = (int)(curValue * 360 / total);
int arcAngle = (int)(slices[i].value * 360 / total);


if (i == slices.length-1) {
arcAngle = 360 - startAngle;
}


/*if (array[0].equals("arc")) {
int x1 = Integer.parseInt(array[1]);
int y1 = Integer.parseInt(array[2]);
int x2 = Integer.parseInt(array[3]);
int y2 = Integer.parseInt(array[4]);
int colorIndex = Integer.parseInt(array[5]);
Color c = cArray[colorIndex];
g.setColor(c);*/
g.setColor(slices[i].color);
g.fillArc(x1,y1,width, height, startAngle, arcAngle);
g.fillArc(x2,y2,width, height, startAngle, arcAngle);
g.fillArc(x3,y3,width, height, startAngle, arcAngle);
}

}

protected void paintComponent(Graphics g) {
super.paintComponent(g);

while( ! acRef.empty() ) {
String action = acRef.pop();
execute(action, g);
}
}
}

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import javax.swing.JPanel;

Do you have any idea about how to do PlotButton construction action?

Thank you a lot.