001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * ---------------------
028 * WindItemRenderer.java
029 * ---------------------
030 * (C) Copyright 2001-2008, by Achilleus Mantzios and Contributors.
031 *
032 * Original Author: Achilleus Mantzios;
033 * Contributor(s): David Gilbert (for Object Refinery Limited);
034 *
035 * Changes
036 * -------
037 * 06-Feb-2002 : Version 1, based on code contributed by Achilleus
038 * Mantzios (DG);
039 * 28-Mar-2002 : Added a property change listener mechanism so that renderers
040 * no longer need to be immutable. Changed StrictMath --> Math
041 * to retain JDK1.2 compatibility (DG);
042 * 09-Apr-2002 : Changed return type of the drawItem method to void, reflecting
043 * the change in the XYItemRenderer method (DG);
044 * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG);
045 * 21-Jan-2003 : Added new constructor (DG);
046 * 25-Mar-2003 : Implemented Serializable (DG);
047 * 01-May-2003 : Modified drawItem() method signature (DG);
048 * 20-Aug-2003 : Implemented Cloneable and PublicCloneable (DG);
049 * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
050 * 25-Feb-2004 : Replaced CrosshairInfo with CrosshairState (DG);
051 * 15-Jul-2004 : Switched getX() with getXValue() and getY() with
052 * getYValue() (DG);
053 * ------------- JFREECHART 1.0.x ---------------------------------------------
054 * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG);
055 *
056 */
057
058 package org.jfree.chart.renderer.xy;
059
060 import java.awt.Color;
061 import java.awt.Font;
062 import java.awt.Graphics2D;
063 import java.awt.Paint;
064 import java.awt.Stroke;
065 import java.awt.geom.Line2D;
066 import java.awt.geom.Rectangle2D;
067 import java.io.Serializable;
068
069 import org.jfree.chart.axis.ValueAxis;
070 import org.jfree.chart.plot.CrosshairState;
071 import org.jfree.chart.plot.PlotRenderingInfo;
072 import org.jfree.chart.plot.XYPlot;
073 import org.jfree.data.xy.WindDataset;
074 import org.jfree.data.xy.XYDataset;
075 import org.jfree.ui.RectangleEdge;
076 import org.jfree.util.PublicCloneable;
077
078 /**
079 * A specialised renderer for displaying wind intensity/direction data.
080 * The example shown here is generated by the <code>WindChartDemo1.java</code>
081 * program included in the JFreeChart demo collection:
082 * <br><br>
083 * <img src="../../../../../images/WindItemRendererSample.png"
084 * alt="WindItemRendererSample.png" />
085 */
086 public class WindItemRenderer extends AbstractXYItemRenderer
087 implements XYItemRenderer, Cloneable, PublicCloneable, Serializable {
088
089 /** For serialization. */
090 private static final long serialVersionUID = 8078914101916976844L;
091
092 /**
093 * Creates a new renderer.
094 */
095 public WindItemRenderer() {
096 super();
097 }
098
099 /**
100 * Draws the visual representation of a single data item.
101 *
102 * @param g2 the graphics device.
103 * @param state the renderer state.
104 * @param plotArea the area within which the plot is being drawn.
105 * @param info optional information collection.
106 * @param plot the plot (can be used to obtain standard color
107 * information etc).
108 * @param domainAxis the horizontal axis.
109 * @param rangeAxis the vertical axis.
110 * @param dataset the dataset.
111 * @param series the series index (zero-based).
112 * @param item the item index (zero-based).
113 * @param crosshairState crosshair information for the plot
114 * (<code>null</code> permitted).
115 * @param pass the pass index.
116 */
117 public void drawItem(Graphics2D g2,
118 XYItemRendererState state,
119 Rectangle2D plotArea,
120 PlotRenderingInfo info,
121 XYPlot plot,
122 ValueAxis domainAxis,
123 ValueAxis rangeAxis,
124 XYDataset dataset,
125 int series,
126 int item,
127 CrosshairState crosshairState,
128 int pass) {
129
130 WindDataset windData = (WindDataset) dataset;
131
132 Paint seriesPaint = getItemPaint(series, item);
133 Stroke seriesStroke = getItemStroke(series, item);
134 g2.setPaint(seriesPaint);
135 g2.setStroke(seriesStroke);
136
137 // get the data point...
138
139 Number x = windData.getX(series, item);
140 Number windDir = windData.getWindDirection(series, item);
141 Number wforce = windData.getWindForce(series, item);
142 double windForce = wforce.doubleValue();
143
144 double wdirt = Math.toRadians(windDir.doubleValue() * (-30.0) - 90.0);
145
146 double ax1, ax2, ay1, ay2, rax2, ray2;
147
148 RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();
149 RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();
150 ax1 = domainAxis.valueToJava2D(x.doubleValue(), plotArea,
151 domainAxisLocation);
152 ay1 = rangeAxis.valueToJava2D(0.0, plotArea, rangeAxisLocation);
153
154 rax2 = x.doubleValue() + (windForce * Math.cos(wdirt) * 8000000.0);
155 ray2 = windForce * Math.sin(wdirt);
156
157 ax2 = domainAxis.valueToJava2D(rax2, plotArea, domainAxisLocation);
158 ay2 = rangeAxis.valueToJava2D(ray2, plotArea, rangeAxisLocation);
159
160 int diri = windDir.intValue();
161 int forcei = wforce.intValue();
162 String dirforce = diri + "-" + forcei;
163 Line2D line = new Line2D.Double(ax1, ay1, ax2, ay2);
164
165 g2.draw(line);
166 g2.setPaint(Color.blue);
167 g2.setFont(new Font("Dialog", 1, 9));
168
169 g2.drawString(dirforce, (float) ax1, (float) ay1);
170
171 g2.setPaint(seriesPaint);
172 g2.setStroke(seriesStroke);
173
174 double alx2, aly2, arx2, ary2;
175 double ralx2, raly2, rarx2, rary2;
176
177 double aldir = Math.toRadians(windDir.doubleValue()
178 * (-30.0) - 90.0 - 5.0);
179 ralx2 = wforce.doubleValue() * Math.cos(aldir) * 8000000 * 0.8
180 + x.doubleValue();
181 raly2 = wforce.doubleValue() * Math.sin(aldir) * 0.8;
182
183 alx2 = domainAxis.valueToJava2D(ralx2, plotArea, domainAxisLocation);
184 aly2 = rangeAxis.valueToJava2D(raly2, plotArea, rangeAxisLocation);
185
186 line = new Line2D.Double(alx2, aly2, ax2, ay2);
187 g2.draw(line);
188
189 double ardir = Math.toRadians(windDir.doubleValue()
190 * (-30.0) - 90.0 + 5.0);
191 rarx2 = wforce.doubleValue() * Math.cos(ardir) * 8000000 * 0.8
192 + x.doubleValue();
193 rary2 = wforce.doubleValue() * Math.sin(ardir) * 0.8;
194
195 arx2 = domainAxis.valueToJava2D(rarx2, plotArea, domainAxisLocation);
196 ary2 = rangeAxis.valueToJava2D(rary2, plotArea, rangeAxisLocation);
197
198 line = new Line2D.Double(arx2, ary2, ax2, ay2);
199 g2.draw(line);
200
201 }
202
203 /**
204 * Returns a clone of the renderer.
205 *
206 * @return A clone.
207 *
208 * @throws CloneNotSupportedException if the renderer cannot be cloned.
209 */
210 public Object clone() throws CloneNotSupportedException {
211 return super.clone();
212 }
213
214 }