001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, 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 2001-2007, 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 */
081 public class WindItemRenderer extends AbstractXYItemRenderer
082 implements XYItemRenderer,
083 Cloneable,
084 PublicCloneable,
085 Serializable {
086
087 /** For serialization. */
088 private static final long serialVersionUID = 8078914101916976844L;
089
090 /**
091 * Creates a new renderer.
092 */
093 public WindItemRenderer() {
094 super();
095 }
096
097 /**
098 * Draws the visual representation of a single data item.
099 *
100 * @param g2 the graphics device.
101 * @param state the renderer state.
102 * @param plotArea the area within which the plot is being drawn.
103 * @param info optional information collection.
104 * @param plot the plot (can be used to obtain standard color
105 * information etc).
106 * @param domainAxis the horizontal axis.
107 * @param rangeAxis the vertical axis.
108 * @param dataset the dataset.
109 * @param series the series index (zero-based).
110 * @param item the item index (zero-based).
111 * @param crosshairState crosshair information for the plot
112 * (<code>null</code> permitted).
113 * @param pass the pass index.
114 */
115 public void drawItem(Graphics2D g2,
116 XYItemRendererState state,
117 Rectangle2D plotArea,
118 PlotRenderingInfo info,
119 XYPlot plot,
120 ValueAxis domainAxis,
121 ValueAxis rangeAxis,
122 XYDataset dataset,
123 int series,
124 int item,
125 CrosshairState crosshairState,
126 int pass) {
127
128 WindDataset windData = (WindDataset) dataset;
129
130 Paint seriesPaint = getItemPaint(series, item);
131 Stroke seriesStroke = getItemStroke(series, item);
132 g2.setPaint(seriesPaint);
133 g2.setStroke(seriesStroke);
134
135 // get the data point...
136
137 Number x = windData.getX(series, item);
138 Number windDir = windData.getWindDirection(series, item);
139 Number wforce = windData.getWindForce(series, item);
140 double windForce = wforce.doubleValue();
141
142 double wdirt = Math.toRadians(windDir.doubleValue() * (-30.0) - 90.0);
143
144 double ax1, ax2, ay1, ay2, rax2, ray2;
145
146 RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();
147 RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();
148 ax1 = domainAxis.valueToJava2D(x.doubleValue(), plotArea,
149 domainAxisLocation);
150 ay1 = rangeAxis.valueToJava2D(0.0, plotArea, rangeAxisLocation);
151
152 rax2 = x.doubleValue() + (windForce * Math.cos(wdirt) * 8000000.0);
153 ray2 = windForce * Math.sin(wdirt);
154
155 ax2 = domainAxis.valueToJava2D(rax2, plotArea, domainAxisLocation);
156 ay2 = rangeAxis.valueToJava2D(ray2, plotArea, rangeAxisLocation);
157
158 int diri = windDir.intValue();
159 int forcei = wforce.intValue();
160 String dirforce = diri + "-" + forcei;
161 Line2D line = new Line2D.Double(ax1, ay1, ax2, ay2);
162
163 g2.draw(line);
164 g2.setPaint(Color.blue);
165 g2.setFont(new Font("foo", 1, 9));
166
167 g2.drawString(dirforce, (float) ax1, (float) ay1);
168
169 g2.setPaint(seriesPaint);
170 g2.setStroke(seriesStroke);
171
172 double alx2, aly2, arx2, ary2;
173 double ralx2, raly2, rarx2, rary2;
174
175 double aldir = Math.toRadians(windDir.doubleValue()
176 * (-30.0) - 90.0 - 5.0);
177 ralx2 = wforce.doubleValue() * Math.cos(aldir) * 8000000 * 0.8
178 + x.doubleValue();
179 raly2 = wforce.doubleValue() * Math.sin(aldir) * 0.8;
180
181 alx2 = domainAxis.valueToJava2D(ralx2, plotArea, domainAxisLocation);
182 aly2 = rangeAxis.valueToJava2D(raly2, plotArea, rangeAxisLocation);
183
184 line = new Line2D.Double(alx2, aly2, ax2, ay2);
185 g2.draw(line);
186
187 double ardir = Math.toRadians(windDir.doubleValue()
188 * (-30.0) - 90.0 + 5.0);
189 rarx2 = wforce.doubleValue() * Math.cos(ardir) * 8000000 * 0.8
190 + x.doubleValue();
191 rary2 = wforce.doubleValue() * Math.sin(ardir) * 0.8;
192
193 arx2 = domainAxis.valueToJava2D(rarx2, plotArea, domainAxisLocation);
194 ary2 = rangeAxis.valueToJava2D(rary2, plotArea, rangeAxisLocation);
195
196 line = new Line2D.Double(arx2, ary2, ax2, ay2);
197 g2.draw(line);
198
199 }
200
201 /**
202 * Returns a clone of the renderer.
203 *
204 * @return A clone.
205 *
206 * @throws CloneNotSupportedException if the renderer cannot be cloned.
207 */
208 public Object clone() throws CloneNotSupportedException {
209 return super.clone();
210 }
211
212 }