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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 2018 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.rocktour.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.time.format.DateTimeFormatter;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import javax.swing.JPanel;
import org.apache.commons.lang3.StringUtils;
import org.optaplanner.examples.common.swingui.latitudelongitude.LatitudeLongitudeTranslator;
import org.optaplanner.examples.rocktour.domain.RockBus;
import org.optaplanner.examples.rocktour.domain.RockLocation;
import org.optaplanner.examples.rocktour.domain.RockShow;
import org.optaplanner.examples.rocktour.domain.RockTourSolution;
import org.optaplanner.swing.impl.TangoColorFactory;
public class RockTourWorldPanel extends JPanel {
private static final int TEXT_SIZE = 12;
private static final int LOCATION_NAME_TEXT_SIZE = 8;
protected static final DateTimeFormatter DAY_FORMATTER = DateTimeFormatter.ofPattern("E yyyy-MM-dd", Locale.ENGLISH);
private final RockTourPanel rockTourPanel;
private BufferedImage canvas = null;
private LatitudeLongitudeTranslator translator = null;
public RockTourWorldPanel(RockTourPanel rockTourPanel) {
this.rockTourPanel = rockTourPanel;
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
// TODO Not thread-safe during solving
RockTourSolution solution = RockTourWorldPanel.this.rockTourPanel.getSolution();
if (solution != null) {
resetPanel(solution);
}
}
});
}
public void resetPanel(RockTourSolution solution) {
translator = new LatitudeLongitudeTranslator();
RockBus bus = solution.getBus();
translator.addCoordinates(bus.getStartLocation().getLatitude(), bus.getStartLocation().getLongitude());
translator.addCoordinates(bus.getEndLocation().getLatitude(), bus.getEndLocation().getLongitude());
for (RockShow show : solution.getShowList()) {
translator.addCoordinates(show.getLocation().getLatitude(), show.getLocation().getLongitude());
}
Dimension size = getSize();
double width = size.getWidth();
double height = size.getHeight();
translator.prepareFor(width, height);
Graphics2D g = createCanvas(width, height);
g.setFont(g.getFont().deriveFont((float) LOCATION_NAME_TEXT_SIZE));
List showList = solution.getShowList();
int maxAvailableDateSetSize = showList.stream().mapToInt(show -> show.getAvailableDateSet().size()).max().orElse(-1);
for (RockShow show : showList) {
RockLocation location = show.getLocation();
int x = translator.translateLongitudeToX(location.getLongitude());
int y = translator.translateLatitudeToY(location.getLatitude());
double percentage = (double) show.getAvailableDateSet().size() / maxAvailableDateSetSize;
g.setColor(TangoColorFactory.buildPercentageColor(TangoColorFactory.PLUM_3, TangoColorFactory.PLUM_1, percentage));
g.fillRect(x - 1, y - 1, 3, 3);
if (location.getCityName() != null && showList.size() <= 500) {
g.drawString(StringUtils.abbreviate(location.getCityName(), 20), x + 3, y - 3);
}
if (show.getDate() != null) {
g.drawString(DAY_FORMATTER.format(show.getDate()), x + 3, y - 3 + LOCATION_NAME_TEXT_SIZE * 3 / 2);
}
}
g.setColor(TangoColorFactory.ALUMINIUM_4);
RockLocation busStartLocation = bus.getStartLocation();
int domicileX = translator.translateLongitudeToX(busStartLocation.getLongitude());
int domicileY = translator.translateLatitudeToY(busStartLocation.getLatitude());
g.fillRect(domicileX - 2, domicileY - 2, 5, 5);
if (busStartLocation.getCityName() != null && showList.size() <= 500) {
g.drawString(busStartLocation.getCityName(), domicileX + 3, domicileY - 3);
}
Set needsBackToDomicileLineSet = new HashSet<>(showList);
for (RockShow trailingShow : showList) {
if (trailingShow.getPreviousStandstill() instanceof RockShow) {
needsBackToDomicileLineSet.remove(trailingShow.getPreviousStandstill());
}
}
g.setColor(TangoColorFactory.CHOCOLATE_1);
for (RockShow show : showList) {
if (show.getPreviousStandstill() != null) {
RockLocation previousLocation = show.getPreviousStandstill().getDepartureLocation();
RockLocation location = show.getLocation();
translator.drawRoute(g, previousLocation.getLongitude(), previousLocation.getLatitude(),
location.getLongitude(), location.getLatitude(),
true, false);
// Back to bus line
if (needsBackToDomicileLineSet.contains(show)) {
translator.drawRoute(g, location.getLongitude(), location.getLatitude(),
busStartLocation.getLongitude(), busStartLocation.getLatitude(),
true, true);
}
}
}
g.setFont(g.getFont().deriveFont((float) TEXT_SIZE));
// Legend
g.setColor(TangoColorFactory.ALUMINIUM_4);
g.fillRect(5, (int) height - 17 - TEXT_SIZE, 5, 5);
g.drawString("Bus start", 15, (int) height - 10 - TEXT_SIZE);
g.setColor(TangoColorFactory.PLUM_2);
g.fillRect(6, (int) height - 11, 3, 3);
g.drawString("Show (darker means less available)", 15, (int) height - 5);
repaint();
}
public void updatePanel(RockTourSolution 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);
}
}
}