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jfreechart example source code file (BarRenderer3D.java)

This example jfreechart source code file (BarRenderer3D.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, barrenderer3d, categoryplot, categoryplot, generalpath, generalpath, geometry, io, line2d, paint, paint, plotorientation, rectangle2d, rectangle2d, stroke, valueaxis, valuemarker

The jfreechart BarRenderer3D.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------------
 * BarRenderer3D.java
 * ------------------
 * (C) Copyright 2001-2009, by Serge V. Grachov and Contributors.
 *
 * Original Author:  Serge V. Grachov;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *                   Tin Luu;
 *                   Milo Simpson;
 *                   Richard Atkinson;
 *                   Rich Unger;
 *                   Christian W. Zuckschwerdt;
 *
 * Changes
 * -------
 * 31-Oct-2001 : First version, contributed by Serge V. Grachov (DG);
 * 15-Nov-2001 : Modified to allow for null data values (DG);
 * 13-Dec-2001 : Added tooltips (DG);
 * 16-Jan-2002 : Added fix for single category or single series datasets,
 *               pointed out by Taoufik Romdhane (DG);
 * 24-May-2002 : Incorporated tooltips into chart entities (DG);
 * 11-Jun-2002 : Added check for (permitted) null info object, bug and fix
 *               reported by David Basten.  Also updated Javadocs. (DG);
 * 19-Jun-2002 : Added code to draw labels on bars (TL);
 * 26-Jun-2002 : Added bar clipping to avoid PRExceptions (DG);
 * 05-Aug-2002 : Small modification to drawCategoryItem method to support URLs
 *               for HTML image maps (RA);
 * 06-Aug-2002 : Value labels now use number formatter, thanks to Milo
 *               Simpson (DG);
 * 08-Aug-2002 : Applied fixed in bug id 592218 (DG);
 * 20-Sep-2002 : Added fix for categoryPaint by Rich Unger, and fixed errors
 *               reported by Checkstyle (DG);
 * 24-Oct-2002 : Amendments for changes in CategoryDataset interface and
 *               CategoryToolTipGenerator interface (DG);
 * 05-Nov-2002 : Replaced references to CategoryDataset with TableDataset (DG);
 * 06-Nov-2002 : Moved to the com.jrefinery.chart.renderer package (DG);
 * 28-Jan-2003 : Added an attribute to control the shading of the left and
 *               bottom walls in the plot background (DG);
 * 25-Mar-2003 : Implemented Serializable (DG);
 * 10-Apr-2003 : Removed category paint usage (DG);
 * 13-May-2003 : Renamed VerticalBarRenderer3D --> BarRenderer3D and merged with
 *               HorizontalBarRenderer3D (DG);
 * 30-Jul-2003 : Modified entity constructor (CZ);
 * 19-Aug-2003 : Implemented Cloneable and PublicCloneable (DG);
 * 07-Oct-2003 : Added renderer state (DG);
 * 08-Oct-2003 : Removed clipping (replaced with flag in CategoryPlot to
 *               control order in which the data items are processed) (DG);
 * 20-Oct-2003 : Fixed bug (outline stroke not being used for bar
 *               outlines) (DG);
 * 21-Oct-2003 : Bar width moved into CategoryItemRendererState (DG);
 * 24-Nov-2003 : Fixed bug 846324 (item labels not showing) (DG);
 * 27-Nov-2003 : Added code to respect maxBarWidth setting (DG);
 * 02-Feb-2004 : Fixed bug where 'drawBarOutline' flag is not respected (DG);
 * 10-Feb-2004 : Small change to drawItem() method to make cut-and-paste
 *               overriding easier (DG);
 * 04-Oct-2004 : Fixed bug with item label positioning when plot alignment is
 *               horizontal (DG);
 * 05-Nov-2004 : Modified drawItem() signature (DG);
 * 20-Apr-2005 : Renamed CategoryLabelGenerator
 *               --> CategoryItemLabelGenerator (DG);
 * 25-Apr-2005 : Override initialise() method to fix bug 1189642 (DG);
 * 09-Jun-2005 : Use addEntityItem from super class (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 07-Dec-2006 : Implemented equals() override (DG);
 * 17-Jan-2007 : Fixed bug in drawDomainGridline() method (DG);
 * 03-Apr-2007 : Fixed bugs in drawBackground() method (DG);
 * 16-Oct-2007 : Fixed bug in range marker drawing (DG);
 * 19-Mar-2009 : Override for drawRangeLine() method (DG);
 *
 */

package org.jfree.chart.renderer.category;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Paint;
import java.awt.Stroke;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

import org.jfree.chart.Effect3D;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.event.RendererChangeEvent;
import org.jfree.chart.labels.CategoryItemLabelGenerator;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.Marker;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.ValueMarker;
import org.jfree.data.Range;
import org.jfree.data.category.CategoryDataset;
import org.jfree.io.SerialUtilities;
import org.jfree.text.TextUtilities;
import org.jfree.ui.LengthAdjustmentType;
import org.jfree.ui.RectangleAnchor;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.TextAnchor;
import org.jfree.util.PaintUtilities;
import org.jfree.util.PublicCloneable;

/**
 * A renderer for bars with a 3D effect, for use with the
 * {@link CategoryPlot} class.  The example shown here is generated
 * by the <code>BarChart3DDemo1.java program included in the JFreeChart
 * Demo Collection:
 * <br>
* <img src="../../../../../images/BarRenderer3DSample.png" * alt="BarRenderer3DSample.png" /> */ public class BarRenderer3D extends BarRenderer implements Effect3D, Cloneable, PublicCloneable, Serializable { /** For serialization. */ private static final long serialVersionUID = 7686976503536003636L; /** The default x-offset for the 3D effect. */ public static final double DEFAULT_X_OFFSET = 12.0; /** The default y-offset for the 3D effect. */ public static final double DEFAULT_Y_OFFSET = 8.0; /** The default wall paint. */ public static final Paint DEFAULT_WALL_PAINT = new Color(0xDD, 0xDD, 0xDD); /** The size of x-offset for the 3D effect. */ private double xOffset; /** The size of y-offset for the 3D effect. */ private double yOffset; /** The paint used to shade the left and lower 3D wall. */ private transient Paint wallPaint; /** * Default constructor, creates a renderer with a default '3D effect'. */ public BarRenderer3D() { this(DEFAULT_X_OFFSET, DEFAULT_Y_OFFSET); } /** * Constructs a new renderer with the specified '3D effect'. * * @param xOffset the x-offset for the 3D effect. * @param yOffset the y-offset for the 3D effect. */ public BarRenderer3D(double xOffset, double yOffset) { super(); this.xOffset = xOffset; this.yOffset = yOffset; this.wallPaint = DEFAULT_WALL_PAINT; // set the default item label positions ItemLabelPosition p1 = new ItemLabelPosition(ItemLabelAnchor.INSIDE12, TextAnchor.TOP_CENTER); setBasePositiveItemLabelPosition(p1); ItemLabelPosition p2 = new ItemLabelPosition(ItemLabelAnchor.INSIDE12, TextAnchor.TOP_CENTER); setBaseNegativeItemLabelPosition(p2); } /** * Returns the x-offset for the 3D effect. * * @return The 3D effect. * * @see #getYOffset() */ public double getXOffset() { return this.xOffset; } /** * Returns the y-offset for the 3D effect. * * @return The 3D effect. */ public double getYOffset() { return this.yOffset; } /** * Returns the paint used to highlight the left and bottom wall in the plot * background. * * @return The paint. * * @see #setWallPaint(Paint) */ public Paint getWallPaint() { return this.wallPaint; } /** * Sets the paint used to hightlight the left and bottom walls in the plot * background, and sends a {@link RendererChangeEvent} to all registered * listeners. * * @param paint the paint (<code>null not permitted). * * @see #getWallPaint() */ public void setWallPaint(Paint paint) { if (paint == null) { throw new IllegalArgumentException("Null 'paint' argument."); } this.wallPaint = paint; fireChangeEvent(); } /** * Initialises the renderer and returns a state object that will be passed * to subsequent calls to the drawItem method. This method gets called * once at the start of the process of drawing a chart. * * @param g2 the graphics device. * @param dataArea the area in which the data is to be plotted. * @param plot the plot. * @param rendererIndex the renderer index. * @param info collects chart rendering information for return to caller. * * @return The renderer state. */ public CategoryItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea, CategoryPlot plot, int rendererIndex, PlotRenderingInfo info) { Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(), dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()); CategoryItemRendererState state = super.initialise(g2, adjusted, plot, rendererIndex, info); return state; } /** * Draws the background for the plot. * * @param g2 the graphics device. * @param plot the plot. * @param dataArea the area inside the axes. */ public void drawBackground(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea) { float x0 = (float) dataArea.getX(); float x1 = x0 + (float) Math.abs(this.xOffset); float x3 = (float) dataArea.getMaxX(); float x2 = x3 - (float) Math.abs(this.xOffset); float y0 = (float) dataArea.getMaxY(); float y1 = y0 - (float) Math.abs(this.yOffset); float y3 = (float) dataArea.getMinY(); float y2 = y3 + (float) Math.abs(this.yOffset); GeneralPath clip = new GeneralPath(); clip.moveTo(x0, y0); clip.lineTo(x0, y2); clip.lineTo(x1, y3); clip.lineTo(x3, y3); clip.lineTo(x3, y1); clip.lineTo(x2, y0); clip.closePath(); Composite originalComposite = g2.getComposite(); g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, plot.getBackgroundAlpha())); // fill background... Paint backgroundPaint = plot.getBackgroundPaint(); if (backgroundPaint != null) { g2.setPaint(backgroundPaint); g2.fill(clip); } GeneralPath leftWall = new GeneralPath(); leftWall.moveTo(x0, y0); leftWall.lineTo(x0, y2); leftWall.lineTo(x1, y3); leftWall.lineTo(x1, y1); leftWall.closePath(); g2.setPaint(getWallPaint()); g2.fill(leftWall); GeneralPath bottomWall = new GeneralPath(); bottomWall.moveTo(x0, y0); bottomWall.lineTo(x1, y1); bottomWall.lineTo(x3, y1); bottomWall.lineTo(x2, y0); bottomWall.closePath(); g2.setPaint(getWallPaint()); g2.fill(bottomWall); // highlight the background corners... g2.setPaint(Color.lightGray); Line2D corner = new Line2D.Double(x0, y0, x1, y1); g2.draw(corner); corner.setLine(x1, y1, x1, y3); g2.draw(corner); corner.setLine(x1, y1, x3, y1); g2.draw(corner); // draw background image, if there is one... Image backgroundImage = plot.getBackgroundImage(); if (backgroundImage != null) { Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX() + getXOffset(), dataArea.getY(), dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()); plot.drawBackgroundImage(g2, adjusted); } g2.setComposite(originalComposite); } /** * Draws the outline for the plot. * * @param g2 the graphics device. * @param plot the plot. * @param dataArea the area inside the axes. */ public void drawOutline(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea) { float x0 = (float) dataArea.getX(); float x1 = x0 + (float) Math.abs(this.xOffset); float x3 = (float) dataArea.getMaxX(); float x2 = x3 - (float) Math.abs(this.xOffset); float y0 = (float) dataArea.getMaxY(); float y1 = y0 - (float) Math.abs(this.yOffset); float y3 = (float) dataArea.getMinY(); float y2 = y3 + (float) Math.abs(this.yOffset); GeneralPath clip = new GeneralPath(); clip.moveTo(x0, y0); clip.lineTo(x0, y2); clip.lineTo(x1, y3); clip.lineTo(x3, y3); clip.lineTo(x3, y1); clip.lineTo(x2, y0); clip.closePath(); // put an outline around the data area... Stroke outlineStroke = plot.getOutlineStroke(); Paint outlinePaint = plot.getOutlinePaint(); if ((outlineStroke != null) && (outlinePaint != null)) { g2.setStroke(outlineStroke); g2.setPaint(outlinePaint); g2.draw(clip); } } /** * Draws a grid line against the domain axis. * * @param g2 the graphics device. * @param plot the plot. * @param dataArea the area for plotting data (not yet adjusted for any * 3D effect). * @param value the Java2D value at which the grid line should be drawn. * */ public void drawDomainGridline(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea, double value) { Line2D line1 = null; Line2D line2 = null; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { double y0 = value; double y1 = value - getYOffset(); double x0 = dataArea.getMinX(); double x1 = x0 + getXOffset(); double x2 = dataArea.getMaxX(); line1 = new Line2D.Double(x0, y0, x1, y1); line2 = new Line2D.Double(x1, y1, x2, y1); } else if (orientation == PlotOrientation.VERTICAL) { double x0 = value; double x1 = value + getXOffset(); double y0 = dataArea.getMaxY(); double y1 = y0 - getYOffset(); double y2 = dataArea.getMinY(); line1 = new Line2D.Double(x0, y0, x1, y1); line2 = new Line2D.Double(x1, y1, x1, y2); } Paint paint = plot.getDomainGridlinePaint(); Stroke stroke = plot.getDomainGridlineStroke(); g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT); g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE); g2.draw(line1); g2.draw(line2); } /** * Draws a grid line against the range axis. * * @param g2 the graphics device. * @param plot the plot. * @param axis the value axis. * @param dataArea the area for plotting data (not yet adjusted for any * 3D effect). * @param value the value at which the grid line should be drawn. * */ public void drawRangeGridline(Graphics2D g2, CategoryPlot plot, ValueAxis axis, Rectangle2D dataArea, double value) { Range range = axis.getRange(); if (!range.contains(value)) { return; } Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(), dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()); Line2D line1 = null; Line2D line2 = null; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { double x0 = axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge()); double x1 = x0 + getXOffset(); double y0 = dataArea.getMaxY(); double y1 = y0 - getYOffset(); double y2 = dataArea.getMinY(); line1 = new Line2D.Double(x0, y0, x1, y1); line2 = new Line2D.Double(x1, y1, x1, y2); } else if (orientation == PlotOrientation.VERTICAL) { double y0 = axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge()); double y1 = y0 - getYOffset(); double x0 = dataArea.getMinX(); double x1 = x0 + getXOffset(); double x2 = dataArea.getMaxX(); line1 = new Line2D.Double(x0, y0, x1, y1); line2 = new Line2D.Double(x1, y1, x2, y1); } Paint paint = plot.getRangeGridlinePaint(); Stroke stroke = plot.getRangeGridlineStroke(); g2.setPaint(paint != null ? paint : Plot.DEFAULT_OUTLINE_PAINT); g2.setStroke(stroke != null ? stroke : Plot.DEFAULT_OUTLINE_STROKE); g2.draw(line1); g2.draw(line2); } /** * Draws a line perpendicular to the range axis. * * @param g2 the graphics device. * @param plot the plot. * @param axis the value axis. * @param dataArea the area for plotting data (not yet adjusted for any 3D * effect). * @param value the value at which the grid line should be drawn. * @param paint the paint. * @param stroke the stroke. * * @see #drawRangeGridline * * @since 1.0.13 */ public void drawRangeLine(Graphics2D g2, CategoryPlot plot, ValueAxis axis, Rectangle2D dataArea, double value, Paint paint, Stroke stroke) { Range range = axis.getRange(); if (!range.contains(value)) { return; } Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(), dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()); Line2D line1 = null; Line2D line2 = null; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { double x0 = axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge()); double x1 = x0 + getXOffset(); double y0 = dataArea.getMaxY(); double y1 = y0 - getYOffset(); double y2 = dataArea.getMinY(); line1 = new Line2D.Double(x0, y0, x1, y1); line2 = new Line2D.Double(x1, y1, x1, y2); } else if (orientation == PlotOrientation.VERTICAL) { double y0 = axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge()); double y1 = y0 - getYOffset(); double x0 = dataArea.getMinX(); double x1 = x0 + getXOffset(); double x2 = dataArea.getMaxX(); line1 = new Line2D.Double(x0, y0, x1, y1); line2 = new Line2D.Double(x1, y1, x2, y1); } g2.setPaint(paint); g2.setStroke(stroke); g2.draw(line1); g2.draw(line2); } /** * Draws a range marker. * * @param g2 the graphics device. * @param plot the plot. * @param axis the value axis. * @param marker the marker. * @param dataArea the area for plotting data (not including 3D effect). */ public void drawRangeMarker(Graphics2D g2, CategoryPlot plot, ValueAxis axis, Marker marker, Rectangle2D dataArea) { Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(), dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()); if (marker instanceof ValueMarker) { ValueMarker vm = (ValueMarker) marker; double value = vm.getValue(); Range range = axis.getRange(); if (!range.contains(value)) { return; } GeneralPath path = null; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { float x = (float) axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge()); float y = (float) adjusted.getMaxY(); path = new GeneralPath(); path.moveTo(x, y); path.lineTo((float) (x + getXOffset()), y - (float) getYOffset()); path.lineTo((float) (x + getXOffset()), (float) (adjusted.getMinY() - getYOffset())); path.lineTo(x, (float) adjusted.getMinY()); path.closePath(); } else if (orientation == PlotOrientation.VERTICAL) { float y = (float) axis.valueToJava2D(value, adjusted, plot.getRangeAxisEdge()); float x = (float) dataArea.getX(); path = new GeneralPath(); path.moveTo(x, y); path.lineTo(x + (float) this.xOffset, y - (float) this.yOffset); path.lineTo((float) (adjusted.getMaxX() + this.xOffset), y - (float) this.yOffset); path.lineTo((float) (adjusted.getMaxX()), y); path.closePath(); } g2.setPaint(marker.getPaint()); g2.fill(path); g2.setPaint(marker.getOutlinePaint()); g2.draw(path); String label = marker.getLabel(); RectangleAnchor anchor = marker.getLabelAnchor(); if (label != null) { Font labelFont = marker.getLabelFont(); g2.setFont(labelFont); g2.setPaint(marker.getLabelPaint()); Point2D coordinates = calculateRangeMarkerTextAnchorPoint( g2, orientation, dataArea, path.getBounds2D(), marker.getLabelOffset(), LengthAdjustmentType.EXPAND, anchor); TextUtilities.drawAlignedString(label, g2, (float) coordinates.getX(), (float) coordinates.getY(), marker.getLabelTextAnchor()); } } else { super.drawRangeMarker(g2, plot, axis, marker, adjusted); // TODO: draw the interval marker with a 3D effect } } /** * Draws a 3D bar to represent one data item. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the area for plotting the data. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the dataset. * @param row the row index (zero-based). * @param column the column index (zero-based). * @param pass the pass index. */ public void drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass) { // check the value we are plotting... Number dataValue = dataset.getValue(row, column); if (dataValue == null) { return; } double value = dataValue.doubleValue(); Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(), dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset()); PlotOrientation orientation = plot.getOrientation(); double barW0 = calculateBarW0(plot, orientation, adjusted, domainAxis, state, row, column); double[] barL0L1 = calculateBarL0L1(value); if (barL0L1 == null) { return; // the bar is not visible } RectangleEdge edge = plot.getRangeAxisEdge(); double transL0 = rangeAxis.valueToJava2D(barL0L1[0], adjusted, edge); double transL1 = rangeAxis.valueToJava2D(barL0L1[1], adjusted, edge); double barL0 = Math.min(transL0, transL1); double barLength = Math.abs(transL1 - transL0); // draw the bar... Rectangle2D bar = null; if (orientation == PlotOrientation.HORIZONTAL) { bar = new Rectangle2D.Double(barL0, barW0, barLength, state.getBarWidth()); } else { bar = new Rectangle2D.Double(barW0, barL0, state.getBarWidth(), barLength); } Paint itemPaint = getItemPaint(row, column); g2.setPaint(itemPaint); g2.fill(bar); double x0 = bar.getMinX(); double x1 = x0 + getXOffset(); double x2 = bar.getMaxX(); double x3 = x2 + getXOffset(); double y0 = bar.getMinY() - getYOffset(); double y1 = bar.getMinY(); double y2 = bar.getMaxY() - getYOffset(); double y3 = bar.getMaxY(); GeneralPath bar3dRight = null; GeneralPath bar3dTop = null; if (barLength > 0.0) { bar3dRight = new GeneralPath(); bar3dRight.moveTo((float) x2, (float) y3); bar3dRight.lineTo((float) x2, (float) y1); bar3dRight.lineTo((float) x3, (float) y0); bar3dRight.lineTo((float) x3, (float) y2); bar3dRight.closePath(); if (itemPaint instanceof Color) { g2.setPaint(((Color) itemPaint).darker()); } g2.fill(bar3dRight); } bar3dTop = new GeneralPath(); bar3dTop.moveTo((float) x0, (float) y1); bar3dTop.lineTo((float) x1, (float) y0); bar3dTop.lineTo((float) x3, (float) y0); bar3dTop.lineTo((float) x2, (float) y1); bar3dTop.closePath(); g2.fill(bar3dTop); if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) { g2.setStroke(getItemOutlineStroke(row, column)); g2.setPaint(getItemOutlinePaint(row, column)); g2.draw(bar); if (bar3dRight != null) { g2.draw(bar3dRight); } if (bar3dTop != null) { g2.draw(bar3dTop); } } CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column); if (generator != null && isItemLabelVisible(row, column)) { drawItemLabel(g2, dataset, row, column, plot, generator, bar, (value < 0.0)); } // add an item entity, if this information is being collected EntityCollection entities = state.getEntityCollection(); if (entities != null) { GeneralPath barOutline = new GeneralPath(); barOutline.moveTo((float) x0, (float) y3); barOutline.lineTo((float) x0, (float) y1); barOutline.lineTo((float) x1, (float) y0); barOutline.lineTo((float) x3, (float) y0); barOutline.lineTo((float) x3, (float) y2); barOutline.lineTo((float) x2, (float) y3); barOutline.closePath(); addItemEntity(entities, dataset, row, column, barOutline); } } /** * Tests this renderer for equality with an arbitrary object. * * @param obj the object (<code>null permitted). * * @return A boolean. */ public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof BarRenderer3D)) { return false; } BarRenderer3D that = (BarRenderer3D) obj; if (this.xOffset != that.xOffset) { return false; } if (this.yOffset != that.yOffset) { return false; } if (!PaintUtilities.equal(this.wallPaint, that.wallPaint)) { return false; } return super.equals(obj); } /** * Provides serialization support. * * @param stream the output stream. * * @throws IOException if there is an I/O error. */ private void writeObject(ObjectOutputStream stream) throws IOException { stream.defaultWriteObject(); SerialUtilities.writePaint(this.wallPaint, stream); } /** * Provides serialization support. * * @param stream the input stream. * * @throws IOException if there is an I/O error. * @throws ClassNotFoundException if there is a classpath problem. */ private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException { stream.defaultReadObject(); this.wallPaint = SerialUtilities.readPaint(stream); } }

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