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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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package org.optaplanner.examples.vehiclerouting.swingui;

import java.awt.Graphics;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;

import javax.swing.JPanel;

import org.optaplanner.examples.common.swingui.latitudelongitude.LatitudeLongitudeTranslator;
import org.optaplanner.examples.vehiclerouting.domain.VehicleRoutingSolution;

public class VehicleRoutingWorldPanel extends JPanel {

    private final VehicleRoutingPanel vehicleRoutingPanel;

    private VehicleRoutingSolutionPainter solutionPainter = new VehicleRoutingSolutionPainter();

    public VehicleRoutingWorldPanel(VehicleRoutingPanel vehicleRoutingPanel) {
        this.vehicleRoutingPanel = vehicleRoutingPanel;
        solutionPainter = new VehicleRoutingSolutionPainter();
        addComponentListener(new ComponentAdapter() {
            @Override
            public void componentResized(ComponentEvent e) {
                // TODO Not thread-safe during solving
                VehicleRoutingSolution solution = VehicleRoutingWorldPanel.this.vehicleRoutingPanel.getSolution();
                if (solution != null) {
                    resetPanel(solution);
                }
            }
        });
        addMouseListener(new MouseAdapter() {
            @Override
            public void mousePressed(MouseEvent e) {
                if (e.getButton() == MouseEvent.BUTTON2 || e.getButton() == MouseEvent.BUTTON3) {
                    LatitudeLongitudeTranslator translator = solutionPainter.getTranslator();
                    if (translator != null) {
                        double longitude = translator.translateXToLongitude(e.getX());
                        double latitude = translator.translateYToLatitude(e.getY());
                        VehicleRoutingWorldPanel.this.vehicleRoutingPanel.insertLocationAndCustomer(longitude, latitude);
                    }
                }
            }
        });
    }

    public void resetPanel(VehicleRoutingSolution solution) {
        solutionPainter.reset(solution, getSize(), this);
        repaint();
    }

    public void updatePanel(VehicleRoutingSolution solution) {
        resetPanel(solution);
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        BufferedImage canvas = solutionPainter.getCanvas();
        if (canvas != null) {
            g.drawImage(canvas, 0, 0, this);
        }
    }

}