WindItemRenderer.java
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2022, by David Gilbert and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------------
* WindItemRenderer.java
* ---------------------
* (C) Copyright 2001-2021, by Achilleus Mantzios and Contributors.
*
* Original Author: Achilleus Mantzios;
* Contributor(s): David Gilbert;
*
*/
package org.jfree.chart.renderer.xy;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Stroke;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CrosshairState;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.api.RectangleEdge;
import org.jfree.chart.api.PublicCloneable;
import org.jfree.data.xy.WindDataset;
import org.jfree.data.xy.XYDataset;
/**
* A specialised renderer for displaying wind intensity/direction data.
* The example shown here is generated by the {@code WindChartDemo1.java}
* program included in the JFreeChart demo collection:
* <br><br>
* <img src="doc-files/WindItemRendererSample.png"
* alt="WindItemRendererSample.png">
*/
public class WindItemRenderer extends AbstractXYItemRenderer
implements XYItemRenderer, Cloneable, PublicCloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 8078914101916976844L;
/**
* Creates a new renderer.
*/
public WindItemRenderer() {
super();
}
/**
* Draws the visual representation of a single data item.
*
* @param g2 the graphics device.
* @param state the renderer state.
* @param plotArea the area within which the plot is being drawn.
* @param info optional information collection.
* @param plot the plot (can be used to obtain standard color
* information etc).
* @param domainAxis the horizontal axis.
* @param rangeAxis the vertical axis.
* @param dataset the dataset.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
* @param crosshairState crosshair information for the plot
* ({@code null} permitted).
* @param pass the pass index.
*/
@Override
public void drawItem(Graphics2D g2, XYItemRendererState state,
Rectangle2D plotArea, PlotRenderingInfo info, XYPlot plot,
ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset,
int series, int item, CrosshairState crosshairState, int pass) {
WindDataset windData = (WindDataset) dataset;
Paint seriesPaint = getItemPaint(series, item);
Stroke seriesStroke = getItemStroke(series, item);
g2.setPaint(seriesPaint);
g2.setStroke(seriesStroke);
// get the data point...
Number x = windData.getX(series, item);
Number windDir = windData.getWindDirection(series, item);
Number wforce = windData.getWindForce(series, item);
double windForce = wforce.doubleValue();
double wdirt = Math.toRadians(windDir.doubleValue() * (-30.0) - 90.0);
double ax1, ax2, ay1, ay2, rax2, ray2;
RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();
RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();
ax1 = domainAxis.valueToJava2D(x.doubleValue(), plotArea,
domainAxisLocation);
ay1 = rangeAxis.valueToJava2D(0.0, plotArea, rangeAxisLocation);
rax2 = x.doubleValue() + (windForce * Math.cos(wdirt) * 8000000.0);
ray2 = windForce * Math.sin(wdirt);
ax2 = domainAxis.valueToJava2D(rax2, plotArea, domainAxisLocation);
ay2 = rangeAxis.valueToJava2D(ray2, plotArea, rangeAxisLocation);
int diri = windDir.intValue();
int forcei = wforce.intValue();
String dirforce = diri + "-" + forcei;
Line2D line = new Line2D.Double(ax1, ay1, ax2, ay2);
g2.draw(line);
g2.setPaint(Color.BLUE);
g2.setFont(new Font("Dialog", 1, 9));
g2.drawString(dirforce, (float) ax1, (float) ay1);
g2.setPaint(seriesPaint);
g2.setStroke(seriesStroke);
double alx2, aly2, arx2, ary2;
double ralx2, raly2, rarx2, rary2;
double aldir = Math.toRadians(windDir.doubleValue()
* (-30.0) - 90.0 - 5.0);
ralx2 = wforce.doubleValue() * Math.cos(aldir) * 8000000 * 0.8
+ x.doubleValue();
raly2 = wforce.doubleValue() * Math.sin(aldir) * 0.8;
alx2 = domainAxis.valueToJava2D(ralx2, plotArea, domainAxisLocation);
aly2 = rangeAxis.valueToJava2D(raly2, plotArea, rangeAxisLocation);
line = new Line2D.Double(alx2, aly2, ax2, ay2);
g2.draw(line);
double ardir = Math.toRadians(windDir.doubleValue()
* (-30.0) - 90.0 + 5.0);
rarx2 = wforce.doubleValue() * Math.cos(ardir) * 8000000 * 0.8
+ x.doubleValue();
rary2 = wforce.doubleValue() * Math.sin(ardir) * 0.8;
arx2 = domainAxis.valueToJava2D(rarx2, plotArea, domainAxisLocation);
ary2 = rangeAxis.valueToJava2D(rary2, plotArea, rangeAxisLocation);
line = new Line2D.Double(arx2, ary2, ax2, ay2);
g2.draw(line);
}
/**
* Returns a clone of the renderer.
*
* @return A clone.
*
* @throws CloneNotSupportedException if the renderer cannot be cloned.
*/
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}