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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-present, 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.]
*
* ---------------
* ShipNeedle.java
* ---------------
* (C) Copyright 2002-present, by the Australian Antarctic Division and
* Contributors.
*
* Original Author: Bryan Scott (for the Australian Antarctic Division);
* Contributor(s): David Gilbert;
*
*/
package org.jfree.chart.needle;
import java.awt.Graphics2D;
import java.awt.geom.Arc2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
/**
* A needle in the shape of a ship, for use with the
* {@link org.jfree.chart.plot.CompassPlot} class.
*/
public class ShipNeedle extends MeterNeedle implements Cloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 149554868169435612L;
/**
* Draws the needle.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
* @param rotate the rotation point.
* @param angle the angle.
*/
@Override
protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea,
Point2D rotate, double angle) {
GeneralPath shape = new GeneralPath();
shape.append(new Arc2D.Double(-9.0, -7.0, 10, 14, 0.0, 25.5,
Arc2D.OPEN), true);
shape.append(new Arc2D.Double(0.0, -7.0, 10, 14, 154.5, 25.5,
Arc2D.OPEN), true);
shape.closePath();
getTransform().setToTranslation(plotArea.getMinX(), plotArea.getMaxY());
getTransform().scale(plotArea.getWidth(), plotArea.getHeight() / 3);
shape.transform(getTransform());
if ((rotate != null) && (angle != 0)) {
/// we have rotation
getTransform().setToRotation(angle, rotate.getX(), rotate.getY());
shape.transform(getTransform());
}
defaultDisplay(g2, shape);
}
/**
* Tests another object for equality with this object.
*
* @param object the object to test.
*
* @return A boolean.
*/
@Override
public boolean equals(Object object) {
if (object == null) {
return false;
}
if (object == this) {
return true;
}
if (super.equals(object) && object instanceof ShipNeedle) {
return true;
}
return false;
}
/**
* Returns a hash code for this instance.
*
* @return A hash code.
*/
@Override
public int hashCode() {
return super.hashCode();
}
/**
* Returns a clone of this needle.
*
* @return A clone.
*
* @throws CloneNotSupportedException if the {@code ShipNeedle}
* cannot be cloned (in theory, this should not happen).
*/
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}
