package PS5;

import java.awt.*;        // import Java AWT
import java.util.*;       // import utility classes (for Vector class)
import javax.swing.*;
import java.awt.geom.*;   // 2-D graphics

public class BusDrawing extends JPanel
{
    private Vector drawList;        // Vector of lines to draw
    private BusSystem bSystem;
    
    public BusDrawing(BusSystem b)
    {
        drawList = new Vector();
        bSystem = b;
    }
    
    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        
        // Get outputs from bus system object
        double h = bSystem.getHeadway();
        double f = bSystem.getFare();
        double n = bSystem.getNoRtes();
        double riders = bSystem.getRiders();
        double revenue = bSystem.getRevenue();
        double cost = bSystem.getCost();
        
        // Display text outputs if there are results
        if (drawList.size() > 0)
        {
            g2.drawString("Headway: " + h, 10, 10);
            g2.drawString("No rtes: " + n, 10, 30);
            g2.drawString("Fare   : " + f, 10, 50);
            g2.drawString("Riders : " + riders, 10, 70);
            g2.drawString("Revenue: " + revenue, 10, 90);
            g2.drawString("Cost   : " + cost, 10, 110);
            
            //  Labels for Logan airport, etc.
            g2.drawString("Logan Airport", 260, 260);
        }
        
        //g2.setStroke(new BasicStroke(2.0F));   // Set line width
        for (int i = 0; i < drawList.size(); i++)
        {
            if (i == 0)
            {          // Assume outer sectors always drawn first (restrictive, but ok for homework)
                g2.setPaint(Color.black);
                g2.draw((Arc2D) drawList.elementAt(i));
            }
            else if (i == 1)
            {    // Assume inner sector drawn next
                g2.setPaint(Color.magenta);
                g2.draw((Arc2D) drawList.elementAt(i));
            }
            else
            {              // All other elements are lines (bus routes)
                g2.setPaint(Color.red);
                g2.draw((Line2D) drawList.elementAt(i));
            }
        }
    }
    
    public void busLines()
    {
        double x0 = 100.0;               // Start 100 pixels from left edge (leave room for labels)
        double y0 = x0;                  // Start same number of pixels from top edge
//        double box = BusFrame.Y-200;     // Size of circle sector (300 in this homework)
	double box = 300.0;              // Size of circle sector (300 in this homework)

        double center = x0 + 0.5*box;    // Center of circle sector
        drawList.clear();               // Start with new Vector each time
        double rs = bSystem.getRteSpacing();
        
        // Start outer arc at 64 degrees, sweep 232 degrees. Set L2=40 miles= 150 pixels arbitrarily
        drawList.addElement(new Arc2D.Double(x0, y0, box, box, 64.0, 232.0, Arc2D.PIE));
        // Use fixed arc to draw inner bound, similar to outer bound. L1=20 miles= 75 pixels, or half of L2
        drawList.addElement(new Arc2D.Double(x0+0.25*box, y0+0.25*box, 0.5*box, 0.5*box, 64.0, 232.0, Arc2D.OPEN));
        
        // Draw routes starting at rte spacing + 64 degrees, converted to radians
        double angle = 64.0*Math.PI/180.0 + rs;
        double length = 0.3125*box;                  // Rte length= L1+5= 25 miles, or 5/8 of L2
        while (angle < 296.0*Math.PI/180.0)
        {   // 64+232 sweep
            double dy = length*Math.sin(angle);      // sin, cos use radians
            double dx = length*Math.cos(angle);
            drawList.addElement(new Line2D.Double(center, center, center + dx, center - dy));
            angle += rs;
        }
    }
}