jfreechart example source code file (PiePlot3D.java)
The jfreechart PiePlot3D.java source code
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2008, 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.]
*
* --------------
* PiePlot3D.java
* --------------
* (C) Copyright 2000-2008, by Object Refinery and Contributors.
*
* Original Author: Tomer Peretz;
* Contributor(s): Richard Atkinson;
* David Gilbert (for Object Refinery Limited);
* Xun Kang;
* Christian W. Zuckschwerdt;
* Arnaud Lelievre;
* Dave Crane;
*
* Changes
* -------
* 21-Jun-2002 : Version 1;
* 31-Jul-2002 : Modified to use startAngle and direction, drawing modified so
* that charts render with foreground alpha < 1.0 (DG);
* 05-Aug-2002 : Small modification to draw method to support URLs for HTML
* image maps (RA);
* 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
* 18-Oct-2002 : Added drawing bug fix sent in by Xun Kang, and made a couple
* of other related fixes (DG);
* 30-Oct-2002 : Changed the PieDataset interface. Fixed another drawing
* bug (DG);
* 12-Nov-2002 : Fixed null pointer exception for zero or negative values (DG);
* 07-Mar-2003 : Modified to pass pieIndex on to PieSectionEntity (DG);
* 21-Mar-2003 : Added workaround for bug id 620031 (DG);
* 26-Mar-2003 : Implemented Serializable (DG);
* 30-Jul-2003 : Modified entity constructor (CZ);
* 29-Aug-2003 : Small changes for API updates in PiePlot class (DG);
* 02-Sep-2003 : Fixed bug where the 'no data' message is not displayed (DG);
* 08-Sep-2003 : Added internationalization via use of properties
* resourceBundle (RFE 690236) (AL);
* 29-Oct-2003 : Added workaround for font alignment in PDF output (DG);
* 20-Nov-2003 : Fixed bug 845289 (sides not showing) (DG);
* 25-Nov-2003 : Added patch (845095) to fix outline paint issues (DG);
* 10-Mar-2004 : Numerous changes to enhance labelling (DG);
* 31-Mar-2004 : Adjusted plot area when label generator is null (DG);
* 08-Apr-2004 : Added flag to PiePlot class to control the treatment of null
* values (DG);
* Added pieIndex to PieSectionEntity (DG);
* 15-Nov-2004 : Removed creation of default tool tip generator (DG);
* 16-Jun-2005 : Added default constructor (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 27-Sep-2006 : Updated draw() method for new lookup methods (DG);
* 22-Mar-2007 : Added equals() override (DG);
* 18-Jun-2007 : Added handling for simple label option (DG);
* 04-Oct-2007 : Added option to darken sides of plot - thanks to Alex Moots
* (see patch 1805262) (DG);
* 21-Nov-2007 : Changed default depth factor, fixed labelling bugs and added
* debug code - see debug flags in PiePlot class (DG);
* 20-Mar-2008 : Fixed bug 1920854 - multiple redraws of the section
* labels (DG);
*
*/
package org.jfree.chart.plot;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Polygon;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Arc2D;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.entity.PieSectionEntity;
import org.jfree.chart.event.PlotChangeEvent;
import org.jfree.chart.labels.PieToolTipGenerator;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.RectangleInsets;
/**
* A plot that displays data in the form of a 3D pie chart, using data from
* any class that implements the {@link PieDataset} interface.
* <P>
* Although this class extends {@link PiePlot}, it does not currently support
* exploded sections.
*/
public class PiePlot3D extends PiePlot implements Serializable {
/** For serialization. */
private static final long serialVersionUID = 3408984188945161432L;
/** The factor of the depth of the pie from the plot height */
private double depthFactor = 0.12;
/**
* A flag that controls whether or not the sides of the pie chart
* are rendered using a darker colour.
*
* @since 1.0.7.
*/
private boolean darkerSides = false; // default preserves previous
// behaviour
/**
* Creates a new instance with no dataset.
*/
public PiePlot3D() {
this(null);
}
/**
* Creates a pie chart with a three dimensional effect using the specified
* dataset.
*
* @param dataset the dataset (<code>null permitted).
*/
public PiePlot3D(PieDataset dataset) {
super(dataset);
setCircular(false, false);
}
/**
* Returns the depth factor for the chart.
*
* @return The depth factor.
*
* @see #setDepthFactor(double)
*/
public double getDepthFactor() {
return this.depthFactor;
}
/**
* Sets the pie depth as a percentage of the height of the plot area, and
* sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param factor the depth factor (for example, 0.20 is twenty percent).
*
* @see #getDepthFactor()
*/
public void setDepthFactor(double factor) {
this.depthFactor = factor;
fireChangeEvent();
}
/**
* Returns a flag that controls whether or not the sides of the pie chart
* are rendered using a darker colour. This is only applied if the
* section colour is an instance of {@link java.awt.Color}.
*
* @return A boolean.
*
* @see #setDarkerSides(boolean)
*
* @since 1.0.7
*/
public boolean getDarkerSides() {
return this.darkerSides;
}
/**
* Sets a flag that controls whether or not the sides of the pie chart
* are rendered using a darker colour, and sends a {@link PlotChangeEvent}
* to all registered listeners. This is only applied if the
* section colour is an instance of {@link java.awt.Color}.
*
* @param darker true to darken the sides, false to use the default
* behaviour.
*
* @see #getDarkerSides()
*
* @since 1.0.7.
*/
public void setDarkerSides(boolean darker) {
this.darkerSides = darker;
fireChangeEvent();
}
/**
* Draws the plot on a Java 2D graphics device (such as the screen or a
* printer). This method is called by the
* {@link org.jfree.chart.JFreeChart} class, you don't normally need
* to call it yourself.
*
* @param g2 the graphics device.
* @param plotArea the area within which the plot should be drawn.
* @param anchor the anchor point.
* @param parentState the state from the parent plot, if there is one.
* @param info collects info about the drawing
* (<code>null permitted).
*/
public void draw(Graphics2D g2, Rectangle2D plotArea, Point2D anchor,
PlotState parentState,
PlotRenderingInfo info) {
// adjust for insets...
RectangleInsets insets = getInsets();
insets.trim(plotArea);
Rectangle2D originalPlotArea = (Rectangle2D) plotArea.clone();
if (info != null) {
info.setPlotArea(plotArea);
info.setDataArea(plotArea);
}
drawBackground(g2, plotArea);
Shape savedClip = g2.getClip();
g2.clip(plotArea);
// adjust the plot area by the interior spacing value
double gapPercent = getInteriorGap();
double labelPercent = 0.0;
if (getLabelGenerator() != null) {
labelPercent = getLabelGap() + getMaximumLabelWidth();
}
double gapHorizontal = plotArea.getWidth() * (gapPercent
+ labelPercent) * 2.0;
double gapVertical = plotArea.getHeight() * gapPercent * 2.0;
if (DEBUG_DRAW_INTERIOR) {
double hGap = plotArea.getWidth() * getInteriorGap();
double vGap = plotArea.getHeight() * getInteriorGap();
double igx1 = plotArea.getX() + hGap;
double igx2 = plotArea.getMaxX() - hGap;
double igy1 = plotArea.getY() + vGap;
double igy2 = plotArea.getMaxY() - vGap;
g2.setPaint(Color.lightGray);
g2.draw(new Rectangle2D.Double(igx1, igy1, igx2 - igx1,
igy2 - igy1));
}
double linkX = plotArea.getX() + gapHorizontal / 2;
double linkY = plotArea.getY() + gapVertical / 2;
double linkW = plotArea.getWidth() - gapHorizontal;
double linkH = plotArea.getHeight() - gapVertical;
// make the link area a square if the pie chart is to be circular...
if (isCircular()) { // is circular?
double min = Math.min(linkW, linkH) / 2;
linkX = (linkX + linkX + linkW) / 2 - min;
linkY = (linkY + linkY + linkH) / 2 - min;
linkW = 2 * min;
linkH = 2 * min;
}
PiePlotState state = initialise(g2, plotArea, this, null, info);
// the link area defines the dog leg points for the linking lines to
// the labels
Rectangle2D linkAreaXX = new Rectangle2D.Double(linkX, linkY, linkW,
linkH * (1 - this.depthFactor));
state.setLinkArea(linkAreaXX);
if (DEBUG_DRAW_LINK_AREA) {
g2.setPaint(Color.blue);
g2.draw(linkAreaXX);
g2.setPaint(Color.yellow);
g2.draw(new Ellipse2D.Double(linkAreaXX.getX(), linkAreaXX.getY(),
linkAreaXX.getWidth(), linkAreaXX.getHeight()));
}
// the explode area defines the max circle/ellipse for the exploded pie
// sections.
// it is defined by shrinking the linkArea by the linkMargin factor.
double hh = linkW * getLabelLinkMargin();
double vv = linkH * getLabelLinkMargin();
Rectangle2D explodeArea = new Rectangle2D.Double(linkX + hh / 2.0,
linkY + vv / 2.0, linkW - hh, linkH - vv);
state.setExplodedPieArea(explodeArea);
// the pie area defines the circle/ellipse for regular pie sections.
// it is defined by shrinking the explodeArea by the explodeMargin
// factor.
double maximumExplodePercent = getMaximumExplodePercent();
double percent = maximumExplodePercent / (1.0 + maximumExplodePercent);
double h1 = explodeArea.getWidth() * percent;
double v1 = explodeArea.getHeight() * percent;
Rectangle2D pieArea = new Rectangle2D.Double(explodeArea.getX()
+ h1 / 2.0, explodeArea.getY() + v1 / 2.0,
explodeArea.getWidth() - h1, explodeArea.getHeight() - v1);
// the link area defines the dog-leg point for the linking lines to
// the labels
int depth = (int) (pieArea.getHeight() * this.depthFactor);
Rectangle2D linkArea = new Rectangle2D.Double(linkX, linkY, linkW,
linkH - depth);
state.setLinkArea(linkArea);
state.setPieArea(pieArea);
state.setPieCenterX(pieArea.getCenterX());
state.setPieCenterY(pieArea.getCenterY() - depth / 2.0);
state.setPieWRadius(pieArea.getWidth() / 2.0);
state.setPieHRadius((pieArea.getHeight() - depth) / 2.0);
// get the data source - return if null;
PieDataset dataset = getDataset();
if (DatasetUtilities.isEmptyOrNull(getDataset())) {
drawNoDataMessage(g2, plotArea);
g2.setClip(savedClip);
drawOutline(g2, plotArea);
return;
}
// if too any elements
if (dataset.getKeys().size() > plotArea.getWidth()) {
String text = "Too many elements";
Font sfont = new Font("dialog", Font.BOLD, 10);
g2.setFont(sfont);
FontMetrics fm = g2.getFontMetrics(sfont);
int stringWidth = fm.stringWidth(text);
g2.drawString(text, (int) (plotArea.getX() + (plotArea.getWidth()
- stringWidth) / 2), (int) (plotArea.getY()
+ (plotArea.getHeight() / 2)));
return;
}
// if we are drawing a perfect circle, we need to readjust the top left
// coordinates of the drawing area for the arcs to arrive at this
// effect.
if (isCircular()) {
double min = Math.min(plotArea.getWidth(),
plotArea.getHeight()) / 2;
plotArea = new Rectangle2D.Double(plotArea.getCenterX() - min,
plotArea.getCenterY() - min, 2 * min, 2 * min);
}
// get a list of keys...
List sectionKeys = dataset.getKeys();
if (sectionKeys.size() == 0) {
return;
}
// establish the coordinates of the top left corner of the drawing area
double arcX = pieArea.getX();
double arcY = pieArea.getY();
//g2.clip(clipArea);
Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
getForegroundAlpha()));
double totalValue = DatasetUtilities.calculatePieDatasetTotal(dataset);
double runningTotal = 0;
if (depth < 0) {
return; // if depth is negative don't draw anything
}
ArrayList arcList = new ArrayList();
Arc2D.Double arc;
Paint paint;
Paint outlinePaint;
Stroke outlineStroke;
Iterator iterator = sectionKeys.iterator();
while (iterator.hasNext()) {
Comparable currentKey = (Comparable) iterator.next();
Number dataValue = dataset.getValue(currentKey);
if (dataValue == null) {
arcList.add(null);
continue;
}
double value = dataValue.doubleValue();
if (value <= 0) {
arcList.add(null);
continue;
}
double startAngle = getStartAngle();
double direction = getDirection().getFactor();
double angle1 = startAngle + (direction * (runningTotal * 360))
/ totalValue;
double angle2 = startAngle + (direction * (runningTotal + value)
* 360) / totalValue;
if (Math.abs(angle2 - angle1) > getMinimumArcAngleToDraw()) {
arcList.add(new Arc2D.Double(arcX, arcY + depth,
pieArea.getWidth(), pieArea.getHeight() - depth,
angle1, angle2 - angle1, Arc2D.PIE));
}
else {
arcList.add(null);
}
runningTotal += value;
}
Shape oldClip = g2.getClip();
Ellipse2D top = new Ellipse2D.Double(pieArea.getX(), pieArea.getY(),
pieArea.getWidth(), pieArea.getHeight() - depth);
Ellipse2D bottom = new Ellipse2D.Double(pieArea.getX(), pieArea.getY()
+ depth, pieArea.getWidth(), pieArea.getHeight() - depth);
Rectangle2D lower = new Rectangle2D.Double(top.getX(),
top.getCenterY(), pieArea.getWidth(), bottom.getMaxY()
- top.getCenterY());
Rectangle2D upper = new Rectangle2D.Double(pieArea.getX(), top.getY(),
pieArea.getWidth(), bottom.getCenterY() - top.getY());
Area a = new Area(top);
a.add(new Area(lower));
Area b = new Area(bottom);
b.add(new Area(upper));
Area pie = new Area(a);
pie.intersect(b);
Area front = new Area(pie);
front.subtract(new Area(top));
Area back = new Area(pie);
back.subtract(new Area(bottom));
// draw the bottom circle
int[] xs;
int[] ys;
arc = new Arc2D.Double(arcX, arcY + depth, pieArea.getWidth(),
pieArea.getHeight() - depth, 0, 360, Arc2D.PIE);
int categoryCount = arcList.size();
for (int categoryIndex = 0; categoryIndex < categoryCount;
categoryIndex++) {
arc = (Arc2D.Double) arcList.get(categoryIndex);
if (arc == null) {
continue;
}
Comparable key = getSectionKey(categoryIndex);
paint = lookupSectionPaint(key);
outlinePaint = lookupSectionOutlinePaint(key);
outlineStroke = lookupSectionOutlineStroke(key);
g2.setPaint(paint);
g2.fill(arc);
g2.setPaint(outlinePaint);
g2.setStroke(outlineStroke);
g2.draw(arc);
g2.setPaint(paint);
Point2D p1 = arc.getStartPoint();
// draw the height
xs = new int[] {(int) arc.getCenterX(), (int) arc.getCenterX(),
(int) p1.getX(), (int) p1.getX()};
ys = new int[] {(int) arc.getCenterY(), (int) arc.getCenterY()
- depth, (int) p1.getY() - depth, (int) p1.getY()};
Polygon polygon = new Polygon(xs, ys, 4);
g2.setPaint(java.awt.Color.lightGray);
g2.fill(polygon);
g2.setPaint(outlinePaint);
g2.setStroke(outlineStroke);
g2.draw(polygon);
g2.setPaint(paint);
}
g2.setPaint(Color.gray);
g2.fill(back);
g2.fill(front);
// cycle through once drawing only the sides at the back...
int cat = 0;
iterator = arcList.iterator();
while (iterator.hasNext()) {
Arc2D segment = (Arc2D) iterator.next();
if (segment != null) {
Comparable key = getSectionKey(cat);
paint = lookupSectionPaint(key);
outlinePaint = lookupSectionOutlinePaint(key);
outlineStroke = lookupSectionOutlineStroke(key);
drawSide(g2, pieArea, segment, front, back, paint,
outlinePaint, outlineStroke, false, true);
}
cat++;
}
// cycle through again drawing only the sides at the front...
cat = 0;
iterator = arcList.iterator();
while (iterator.hasNext()) {
Arc2D segment = (Arc2D) iterator.next();
if (segment != null) {
Comparable key = getSectionKey(cat);
paint = lookupSectionPaint(key);
outlinePaint = lookupSectionOutlinePaint(key);
outlineStroke = lookupSectionOutlineStroke(key);
drawSide(g2, pieArea, segment, front, back, paint,
outlinePaint, outlineStroke, true, false);
}
cat++;
}
g2.setClip(oldClip);
// draw the sections at the top of the pie (and set up tooltips)...
Arc2D upperArc;
for (int sectionIndex = 0; sectionIndex < categoryCount;
sectionIndex++) {
arc = (Arc2D.Double) arcList.get(sectionIndex);
if (arc == null) {
continue;
}
upperArc = new Arc2D.Double(arcX, arcY, pieArea.getWidth(),
pieArea.getHeight() - depth, arc.getAngleStart(),
arc.getAngleExtent(), Arc2D.PIE);
Comparable currentKey = (Comparable) sectionKeys.get(sectionIndex);
paint = lookupSectionPaint(currentKey, true);
outlinePaint = lookupSectionOutlinePaint(currentKey);
outlineStroke = lookupSectionOutlineStroke(currentKey);
g2.setPaint(paint);
g2.fill(upperArc);
g2.setStroke(outlineStroke);
g2.setPaint(outlinePaint);
g2.draw(upperArc);
// add a tooltip for the section...
if (info != null) {
EntityCollection entities
= info.getOwner().getEntityCollection();
if (entities != null) {
String tip = null;
PieToolTipGenerator tipster = getToolTipGenerator();
if (tipster != null) {
// @mgs: using the method's return value was missing
tip = tipster.generateToolTip(dataset, currentKey);
}
String url = null;
if (getURLGenerator() != null) {
url = getURLGenerator().generateURL(dataset, currentKey,
getPieIndex());
}
PieSectionEntity entity = new PieSectionEntity(
upperArc, dataset, getPieIndex(), sectionIndex,
currentKey, tip, url);
entities.add(entity);
}
}
}
List keys = dataset.getKeys();
Rectangle2D adjustedPlotArea = new Rectangle2D.Double(
originalPlotArea.getX(), originalPlotArea.getY(),
originalPlotArea.getWidth(), originalPlotArea.getHeight()
- depth);
if (getSimpleLabels()) {
drawSimpleLabels(g2, keys, totalValue, adjustedPlotArea,
linkArea, state);
}
else {
drawLabels(g2, keys, totalValue, adjustedPlotArea, linkArea,
state);
}
g2.setClip(savedClip);
g2.setComposite(originalComposite);
drawOutline(g2, originalPlotArea);
}
/**
* Draws the side of a pie section.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
* @param arc the arc.
* @param front the front of the pie.
* @param back the back of the pie.
* @param paint the color.
* @param outlinePaint the outline paint.
* @param outlineStroke the outline stroke.
* @param drawFront draw the front?
* @param drawBack draw the back?
*/
protected void drawSide(Graphics2D g2,
Rectangle2D plotArea,
Arc2D arc,
Area front,
Area back,
Paint paint,
Paint outlinePaint,
Stroke outlineStroke,
boolean drawFront,
boolean drawBack) {
if (getDarkerSides()) {
if (paint instanceof Color) {
Color c = (Color) paint;
c = c.darker();
paint = c;
}
}
double start = arc.getAngleStart();
double extent = arc.getAngleExtent();
double end = start + extent;
g2.setStroke(outlineStroke);
// for CLOCKWISE charts, the extent will be negative...
if (extent < 0.0) {
if (isAngleAtFront(start)) { // start at front
if (!isAngleAtBack(end)) {
if (extent > -180.0) { // the segment is entirely at the
// front of the chart
if (drawFront) {
Area side = new Area(new Rectangle2D.Double(
arc.getEndPoint().getX(), plotArea.getY(),
arc.getStartPoint().getX()
- arc.getEndPoint().getX(),
plotArea.getHeight()));
side.intersect(front);
g2.setPaint(paint);
g2.fill(side);
g2.setPaint(outlinePaint);
g2.draw(side);
}
}
else { // the segment starts at the front, and wraps all
// the way around
// the back and finishes at the front again
Area side1 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getStartPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side1.intersect(front);
Area side2 = new Area(new Rectangle2D.Double(
arc.getEndPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getEndPoint().getX(),
plotArea.getHeight()));
side2.intersect(front);
g2.setPaint(paint);
if (drawFront) {
g2.fill(side1);
g2.fill(side2);
}
if (drawBack) {
g2.fill(back);
}
g2.setPaint(outlinePaint);
if (drawFront) {
g2.draw(side1);
g2.draw(side2);
}
if (drawBack) {
g2.draw(back);
}
}
}
else { // starts at the front, finishes at the back (going
// around the left side)
if (drawBack) {
Area side2 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getEndPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side2.intersect(back);
g2.setPaint(paint);
g2.fill(side2);
g2.setPaint(outlinePaint);
g2.draw(side2);
}
if (drawFront) {
Area side1 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getStartPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side1.intersect(front);
g2.setPaint(paint);
g2.fill(side1);
g2.setPaint(outlinePaint);
g2.draw(side1);
}
}
}
else { // the segment starts at the back (still extending
// CLOCKWISE)
if (!isAngleAtFront(end)) {
if (extent > -180.0) { // whole segment stays at the back
if (drawBack) {
Area side = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
arc.getEndPoint().getX()
- arc.getStartPoint().getX(),
plotArea.getHeight()));
side.intersect(back);
g2.setPaint(paint);
g2.fill(side);
g2.setPaint(outlinePaint);
g2.draw(side);
}
}
else { // starts at the back, wraps around front, and
// finishes at back again
Area side1 = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getStartPoint().getX(),
plotArea.getHeight()));
side1.intersect(back);
Area side2 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getEndPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side2.intersect(back);
g2.setPaint(paint);
if (drawBack) {
g2.fill(side1);
g2.fill(side2);
}
if (drawFront) {
g2.fill(front);
}
g2.setPaint(outlinePaint);
if (drawBack) {
g2.draw(side1);
g2.draw(side2);
}
if (drawFront) {
g2.draw(front);
}
}
}
else { // starts at back, finishes at front (CLOCKWISE)
if (drawBack) {
Area side1 = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getStartPoint().getX(),
plotArea.getHeight()));
side1.intersect(back);
g2.setPaint(paint);
g2.fill(side1);
g2.setPaint(outlinePaint);
g2.draw(side1);
}
if (drawFront) {
Area side2 = new Area(new Rectangle2D.Double(
arc.getEndPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getEndPoint().getX(),
plotArea.getHeight()));
side2.intersect(front);
g2.setPaint(paint);
g2.fill(side2);
g2.setPaint(outlinePaint);
g2.draw(side2);
}
}
}
}
else if (extent > 0.0) { // the pie sections are arranged ANTICLOCKWISE
if (isAngleAtFront(start)) { // segment starts at the front
if (!isAngleAtBack(end)) { // and finishes at the front
if (extent < 180.0) { // segment only occupies the front
if (drawFront) {
Area side = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
arc.getEndPoint().getX()
- arc.getStartPoint().getX(),
plotArea.getHeight()));
side.intersect(front);
g2.setPaint(paint);
g2.fill(side);
g2.setPaint(outlinePaint);
g2.draw(side);
}
}
else { // segments wraps right around the back...
Area side1 = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getStartPoint().getX(),
plotArea.getHeight()));
side1.intersect(front);
Area side2 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getEndPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side2.intersect(front);
g2.setPaint(paint);
if (drawFront) {
g2.fill(side1);
g2.fill(side2);
}
if (drawBack) {
g2.fill(back);
}
g2.setPaint(outlinePaint);
if (drawFront) {
g2.draw(side1);
g2.draw(side2);
}
if (drawBack) {
g2.draw(back);
}
}
}
else { // segments starts at front and finishes at back...
if (drawBack) {
Area side2 = new Area(new Rectangle2D.Double(
arc.getEndPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getEndPoint().getX(),
plotArea.getHeight()));
side2.intersect(back);
g2.setPaint(paint);
g2.fill(side2);
g2.setPaint(outlinePaint);
g2.draw(side2);
}
if (drawFront) {
Area side1 = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getStartPoint().getX(),
plotArea.getHeight()));
side1.intersect(front);
g2.setPaint(paint);
g2.fill(side1);
g2.setPaint(outlinePaint);
g2.draw(side1);
}
}
}
else { // segment starts at back
if (!isAngleAtFront(end)) {
if (extent < 180.0) { // and finishes at back
if (drawBack) {
Area side = new Area(new Rectangle2D.Double(
arc.getEndPoint().getX(), plotArea.getY(),
arc.getStartPoint().getX()
- arc.getEndPoint().getX(),
plotArea.getHeight()));
side.intersect(back);
g2.setPaint(paint);
g2.fill(side);
g2.setPaint(outlinePaint);
g2.draw(side);
}
}
else { // starts at back and wraps right around to the
// back again
Area side1 = new Area(new Rectangle2D.Double(
arc.getStartPoint().getX(), plotArea.getY(),
plotArea.getX() - arc.getStartPoint().getX(),
plotArea.getHeight()));
side1.intersect(back);
Area side2 = new Area(new Rectangle2D.Double(
arc.getEndPoint().getX(), plotArea.getY(),
plotArea.getMaxX() - arc.getEndPoint().getX(),
plotArea.getHeight()));
side2.intersect(back);
g2.setPaint(paint);
if (drawBack) {
g2.fill(side1);
g2.fill(side2);
}
if (drawFront) {
g2.fill(front);
}
g2.setPaint(outlinePaint);
if (drawBack) {
g2.draw(side1);
g2.draw(side2);
}
if (drawFront) {
g2.draw(front);
}
}
}
else { // starts at the back and finishes at the front
// (wrapping the left side)
if (drawBack) {
Area side1 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getStartPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side1.intersect(back);
g2.setPaint(paint);
g2.fill(side1);
g2.setPaint(outlinePaint);
g2.draw(side1);
}
if (drawFront) {
Area side2 = new Area(new Rectangle2D.Double(
plotArea.getX(), plotArea.getY(),
arc.getEndPoint().getX() - plotArea.getX(),
plotArea.getHeight()));
side2.intersect(front);
g2.setPaint(paint);
g2.fill(side2);
g2.setPaint(outlinePaint);
g2.draw(side2);
}
}
}
}
}
/**
* Returns a short string describing the type of plot.
*
* @return <i>Pie 3D Plot.
*/
public String getPlotType() {
return localizationResources.getString("Pie_3D_Plot");
}
/**
* A utility method that returns true if the angle represents a point at
* the front of the 3D pie chart. 0 - 180 degrees is the back, 180 - 360
* is the front.
*
* @param angle the angle.
*
* @return A boolean.
*/
private boolean isAngleAtFront(double angle) {
return (Math.sin(Math.toRadians(angle)) < 0.0);
}
/**
* A utility method that returns true if the angle represents a point at
* the back of the 3D pie chart. 0 - 180 degrees is the back, 180 - 360
* is the front.
*
* @param angle the angle.
*
* @return <code>true if the angle is at the back of the pie.
*/
private boolean isAngleAtBack(double angle) {
return (Math.sin(Math.toRadians(angle)) > 0.0);
}
/**
* Tests this plot 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 PiePlot3D)) {
return false;
}
PiePlot3D that = (PiePlot3D) obj;
if (this.depthFactor != that.depthFactor) {
return false;
}
if (this.darkerSides != that.darkerSides) {
return false;
}
return super.equals(obj);
}
}
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