/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------
* LongNeedle.java
* ---------------
* (C) Copyright 2002, 2003, by the Australian Antarctic Division and Contributors.
*
* Original Author: Bryan Scott (for the Australian Antarctic Division);
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* $Id: LongNeedle.java,v 1.1 2004/08/31 14:37:36 mungady Exp $
*
* Changes:
* --------
* 25-Sep-2002 : Version 1, contributed by Bryan Scott (DG);
* 27-Mar-2003 : Implemented Serializable (DG);
* 09-Sep-2003 : Added equals(...) method (DG);
* 16-Mar-2004 : Implemented Rotation
*/
package org.jfree.chart.needle;
import java.awt.Graphics2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.Shape;
import java.io.Serializable;
/**
* A needle that is represented by a long line.
*
* @author Bryan Scott
*/
public class LongNeedle extends MeterNeedle implements Serializable {
/**
* Default constructor.
*/
public LongNeedle() {
super();
setRotateY(0.8);
}
/**
* Draws the needle.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
* @param rotate the rotation point.
* @param angle the angle.
*/
protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea, Point2D rotate, double angle) {
GeneralPath shape1 = new GeneralPath();
GeneralPath shape2 = new GeneralPath();
GeneralPath shape3 = new GeneralPath();
float minX = (float) plotArea.getMinX();
float minY = (float) plotArea.getMinY();
float maxX = (float) plotArea.getMaxX();
float maxY = (float) plotArea.getMaxY();
//float midX = (float) (minX + (plotArea.getWidth() * getRotateX()));
//float midY = (float) (minY + (plotArea.getHeight() * getRotateY()));
float midX = (float) (minX + (plotArea.getWidth() * 0.5));
float midY = (float) (minY + (plotArea.getHeight() * 0.8));
float y = maxY - (2 * (maxY - midY));
if (y < minY) {
y = minY;
}
shape1.moveTo(minX, midY);
shape1.lineTo(midX, minY);
shape1.lineTo(midX, y);
shape1.closePath();
shape2.moveTo(maxX, midY);
shape2.lineTo(midX, minY);
shape2.lineTo(midX, y);
shape2.closePath();
shape3.moveTo(minX, midY);
shape3.lineTo(midX, maxY);
shape3.lineTo(maxX, midY);
shape3.lineTo(midX, y);
shape3.closePath();
Shape s1 = shape1;
Shape s2 = shape2;
Shape s3 = shape3;
if ((rotate != null) && (angle != 0)) {
/// we have rotation huston, please spin me
getTransform().setToRotation(angle, rotate.getX(), rotate.getY());
s1 = shape1.createTransformedShape(transform);
s2 = shape2.createTransformedShape(transform);
s3 = shape3.createTransformedShape(transform);
}
if (getHighlightPaint() != null) {
g2.setPaint(getHighlightPaint());
g2.fill(s3);
}
if (getFillPaint() != null) {
g2.setPaint(getFillPaint());
g2.fill(s1);
g2.fill(s2);
}
if (getOutlinePaint() != null) {
g2.setStroke(getOutlineStroke());
g2.setPaint(getOutlinePaint());
g2.draw(s1);
g2.draw(s2);
g2.draw(s3);
}
}
/**
* Tests another object for equality with this object.
*
* @param object the object to test.
*
* @return A boolean.
*/
public boolean equals(Object object) {
if (object == null) {
return false;
}
if (object == this) {
return true;
}
if (super.equals(object) && object instanceof LongNeedle) {
return true;
}
return false;
}
}