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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.
/*
* Copyright 2020 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.examples.coachshuttlegathering.swingui;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.image.BufferedImage;
import java.util.List;
import javax.swing.JPanel;
import org.apache.commons.lang3.StringUtils;
import org.optaplanner.examples.coachshuttlegathering.domain.Bus;
import org.optaplanner.examples.coachshuttlegathering.domain.BusStop;
import org.optaplanner.examples.coachshuttlegathering.domain.Coach;
import org.optaplanner.examples.coachshuttlegathering.domain.CoachShuttleGatheringSolution;
import org.optaplanner.examples.coachshuttlegathering.domain.StopOrHub;
import org.optaplanner.examples.coachshuttlegathering.domain.location.RoadLocation;
import org.optaplanner.examples.common.swingui.latitudelongitude.LatitudeLongitudeTranslator;
import org.optaplanner.swing.impl.TangoColorFactory;
public class CoachShuttleGatheringWorldPanel extends JPanel {
private static final int LOCATION_NAME_TEXT_SIZE = 12;
private final CoachShuttleGatheringPanel coachShuttleGatheringPanel;
private BufferedImage canvas = null;
private LatitudeLongitudeTranslator translator = null;
public CoachShuttleGatheringWorldPanel(CoachShuttleGatheringPanel coachShuttleGatheringPanel) {
this.coachShuttleGatheringPanel = coachShuttleGatheringPanel;
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
// TODO Not thread-safe during solving
CoachShuttleGatheringSolution solution = CoachShuttleGatheringWorldPanel.this.coachShuttleGatheringPanel
.getSolution();
if (solution != null) {
resetPanel(solution);
}
}
});
}
public void resetPanel(CoachShuttleGatheringSolution solution) {
translator = new LatitudeLongitudeTranslator();
for (RoadLocation location : solution.getLocationList()) {
translator.addCoordinates(location.getLatitude(), location.getLongitude());
}
Dimension size = getSize();
double width = size.getWidth();
double height = size.getHeight();
translator.prepareFor(width, height);
Graphics2D g = createCanvas(width, height);
g.setColor(TangoColorFactory.ORANGE_3);
RoadLocation hubLocation = solution.getHub().getLocation();
translator.drawSquare(g, hubLocation.getLongitude(), hubLocation.getLatitude(), 5);
for (BusStop stop : solution.getStopList()) {
RoadLocation location = stop.getLocation();
g.setColor((stop.getPassengerQuantity() <= 0) ? TangoColorFactory.ALUMINIUM_4
: (stop.getTransportTimeToHub() == null) ? TangoColorFactory.ORANGE_2
: (stop.getTransportTimeRemainder() < 0) ? TangoColorFactory.SCARLET_2
: TangoColorFactory.ORANGE_2);
translator.drawSquare(g, location.getLongitude(), location.getLatitude(), 3,
stop.getTransportLabel());
}
List busList = solution.getBusList();
g.setColor(TangoColorFactory.ALUMINIUM_2);
g.setFont(g.getFont().deriveFont((float) LOCATION_NAME_TEXT_SIZE));
for (Bus bus : busList) {
RoadLocation location = bus.getLocation();
g.setColor(bus instanceof Coach ? TangoColorFactory.ORANGE_1 : TangoColorFactory.ALUMINIUM_2);
translator.drawSquare(g, location.getLongitude(), location.getLatitude(), 3,
StringUtils.abbreviate(bus.getName(), 20));
}
int colorIndex = 0;
for (Bus bus : busList) {
g.setColor(TangoColorFactory.SEQUENCE_2.get(colorIndex));
BusStop lastStop = null;
for (BusStop stop = bus.getNextStop(); stop != null; stop = stop.getNextStop()) {
RoadLocation previousLocation = stop.getPreviousBusOrStop().getLocation();
RoadLocation location = stop.getLocation();
translator.drawRoute(g, previousLocation.getLongitude(), previousLocation.getLatitude(),
location.getLongitude(), location.getLatitude(),
false, false);
lastStop = stop;
}
if (lastStop != null || bus instanceof Coach) {
RoadLocation lastStopLocation = lastStop == null ? bus.getLocation() : lastStop.getLocation();
StopOrHub destination = bus.getDestination();
if (destination != null) {
RoadLocation destinationLocation = destination.getLocation();
translator.drawRoute(g, lastStopLocation.getLongitude(), lastStopLocation.getLatitude(),
destinationLocation.getLongitude(), destinationLocation.getLatitude(),
false, true);
}
}
colorIndex = (colorIndex + 1) % TangoColorFactory.SEQUENCE_2.size();
}
repaint();
}
public void updatePanel(CoachShuttleGatheringSolution solution) {
resetPanel(solution);
}
private Graphics2D createCanvas(double width, double height) {
int canvasWidth = (int) Math.ceil(width) + 1;
int canvasHeight = (int) Math.ceil(height) + 1;
canvas = new BufferedImage(canvasWidth, canvasHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D g = canvas.createGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, canvasWidth, canvasHeight);
return g;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (canvas != null) {
g.drawImage(canvas, 0, 0, this);
}
}
}