teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863: * Software engineering by Intevation GmbH
teichmann@5863: *
teichmann@5994: * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5863: * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5994: * documentation coming with Dive4Elements River for details.
teichmann@5863: */
teichmann@5863:
sascha@1823: /* ===========================================================
sascha@1823: * JFreeChart : a free chart library for the Java(tm) platform
sascha@1823: * ===========================================================
sascha@1823: *
sascha@1823: * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
sascha@1823: *
sascha@1823: * Project Info: http://www.jfree.org/jfreechart/index.html
sascha@1823: *
sascha@1823: * This library is free software; you can redistribute it and/or modify it
sascha@1823: * under the terms of the GNU Lesser General Public License as published by
sascha@1823: * the Free Software Foundation; either version 2.1 of the License, or
sascha@1823: * (at your option) any later version.
sascha@1823: *
sascha@1823: * This library is distributed in the hope that it will be useful, but
sascha@1823: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
sascha@1823: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
sascha@1823: * License for more details.
sascha@1823: *
sascha@1823: * You should have received a copy of the GNU Lesser General Public
sascha@1823: * License along with this library; if not, write to the Free Software
sascha@1823: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
sascha@1823: * USA.
sascha@1823: *
sascha@1823: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
sascha@1823: * in the United States and other countries.]
sascha@1823: *
sascha@1823: * -------------------------
sascha@1823: * StableXYDifferenceRenderer.java
sascha@1823: * -------------------------
sascha@1823: * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
sascha@1823: *
sascha@1823: * Original Author: David Gilbert (for Object Refinery Limited);
sascha@1823: * Contributor(s): Richard West, Advanced Micro Devices, Inc. (major rewrite
sascha@1823: * of difference drawing algorithm);
sascha@1823: *
sascha@1823: * Changes:
sascha@1823: * --------
sascha@1823: * 30-Apr-2003 : Version 1 (DG);
sascha@1823: * 30-Jul-2003 : Modified entity constructor (CZ);
sascha@1823: * 20-Aug-2003 : Implemented Cloneable and PublicCloneable (DG);
sascha@1823: * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
sascha@1823: * 09-Feb-2004 : Updated to support horizontal plot orientation (DG);
sascha@1823: * 10-Feb-2004 : Added default constructor, setter methods and updated
sascha@1823: * Javadocs (DG);
sascha@1823: * 25-Feb-2004 : Replaced CrosshairInfo with CrosshairState (DG);
sascha@1823: * 30-Mar-2004 : Fixed bug in getNegativePaint() method (DG);
sascha@1823: * 15-Jul-2004 : Switched getX() with getXValue() and getY() with
sascha@1823: * getYValue() (DG);
sascha@1823: * 25-Aug-2004 : Fixed a bug preventing the use of crosshairs (DG);
sascha@1823: * 11-Nov-2004 : Now uses ShapeUtilities to translate shapes (DG);
sascha@1823: * 19-Jan-2005 : Now accesses only primitive values from dataset (DG);
sascha@1823: * 22-Feb-2005 : Override getLegendItem(int, int) to return "line" items (DG);
sascha@1823: * 13-Apr-2005 : Fixed shape positioning bug (id = 1182062) (DG);
sascha@1823: * 20-Apr-2005 : Use generators for legend tooltips and URLs (DG);
sascha@1823: * 04-May-2005 : Override equals() method, renamed get/setPlotShapes() -->
sascha@1823: * get/setShapesVisible (DG);
sascha@1823: * 09-Jun-2005 : Updated equals() to handle GradientPaint (DG);
sascha@1823: * 16-Jun-2005 : Fix bug (1221021) affecting stroke used for each series (DG);
sascha@1823: * ------------- JFREECHART 1.0.x ---------------------------------------------
sascha@1823: * 24-Jan-2007 : Added flag to allow rounding of x-coordinates, and fixed
sascha@1823: * bug in clone() (DG);
sascha@1823: * 05-Feb-2007 : Added an extra call to updateCrosshairValues() in
sascha@1823: * drawItemPass1(), to fix bug 1564967 (DG);
sascha@1823: * 06-Feb-2007 : Fixed bug 1086307, crosshairs with multiple axes (DG);
sascha@1823: * 08-Mar-2007 : Fixed entity generation (DG);
sascha@1823: * 20-Apr-2007 : Updated getLegendItem() for renderer change (DG);
sascha@1823: * 23-Apr-2007 : Rewrite of difference drawing algorithm to allow use of
sascha@1823: * series with disjoint x-values (RW);
sascha@1823: * 04-May-2007 : Set processVisibleItemsOnly flag to false (DG);
sascha@1823: * 17-May-2007 : Set datasetIndex and seriesIndex in getLegendItem() (DG);
sascha@1823: * 18-May-2007 : Set dataset and seriesKey for LegendItem (DG);
sascha@1823: * 05-Nov-2007 : Draw item labels if visible (RW);
sascha@1823: * 17-Jun-2008 : Apply legend shape, font and paint attributes (DG);
felix@2021: */
felix@2021: /*
felix@2021: * For further changes within the FLYS project, refer to the ChangeLog.
sascha@1823: */
teichmann@5831: package org.dive4elements.river.jfree;
sascha@1823:
felix@2071: import java.awt.BasicStroke;
sascha@1823: import java.awt.Color;
felix@2666: import java.awt.Font;
gernotbelger@9182: import java.awt.Graphics2D;
sascha@1823: import java.awt.Paint;
sascha@1823: import java.awt.Shape;
sascha@1823: import java.awt.Stroke;
sascha@1823: import java.awt.geom.GeneralPath;
sascha@1823: import java.awt.geom.Line2D;
gernotbelger@9182: import java.awt.geom.Point2D;
sascha@1823: import java.awt.geom.Rectangle2D;
sascha@1823: import java.io.IOException;
sascha@1823: import java.io.ObjectInputStream;
sascha@1823: import java.io.ObjectOutputStream;
gernotbelger@9182: import java.text.NumberFormat;
sascha@1883: import java.util.ArrayList;
sascha@1823: import java.util.Collections;
sascha@1823: import java.util.LinkedList;
sascha@1883: import java.util.List;
sascha@1823:
gernotbelger@9182: import org.apache.log4j.Logger;
gernotbelger@9182: import org.dive4elements.river.artifacts.math.Linear;
sascha@1823: import org.jfree.chart.LegendItem;
sascha@1823: import org.jfree.chart.axis.ValueAxis;
sascha@1823: import org.jfree.chart.entity.EntityCollection;
sascha@1823: import org.jfree.chart.entity.XYItemEntity;
sascha@1823: import org.jfree.chart.event.RendererChangeEvent;
sascha@1823: import org.jfree.chart.labels.XYToolTipGenerator;
sascha@1823: import org.jfree.chart.plot.CrosshairState;
sascha@1823: import org.jfree.chart.plot.PlotOrientation;
sascha@1823: import org.jfree.chart.plot.PlotRenderingInfo;
sascha@1823: import org.jfree.chart.plot.XYPlot;
gernotbelger@9182: import org.jfree.chart.renderer.xy.AbstractXYItemRenderer;
gernotbelger@9182: import org.jfree.chart.renderer.xy.XYItemRendererState;
sascha@1823: import org.jfree.chart.urls.XYURLGenerator;
gernotbelger@9182: import org.jfree.data.xy.DefaultXYDataset;
sascha@1823: import org.jfree.data.xy.XYDataset;
sascha@1823: import org.jfree.io.SerialUtilities;
sascha@1823: import org.jfree.ui.RectangleEdge;
sascha@1823: import org.jfree.util.PaintUtilities;
sascha@1823: import org.jfree.util.PublicCloneable;
sascha@1823: import org.jfree.util.ShapeUtilities;
sascha@1823:
sascha@1883: import gnu.trove.TDoubleArrayList;
sascha@1883:
sascha@1823: /**
sascha@1823: * A renderer for an {@link XYPlot} that highlights the differences between two
gernotbelger@9182: * series. The example shown here is generated by the
sascha@1823: * DifferenceChartDemo1.java
program included in the JFreeChart
sascha@1823: * demo collection:
gernotbelger@9182: *
gernotbelger@9182: *
sascha@1823: *
sascha@1823: */
gernotbelger@9182: public class StableXYDifferenceRenderer extends AbstractXYItemRenderer implements PublicCloneable {
sascha@1823:
gernotbelger@9182: private static Logger log = Logger.getLogger(StableXYDifferenceRenderer.class);
sascha@2107:
sascha@2108: public static final int CALCULATE_POSITIVE_AREA = 1;
sascha@2108: public static final int CALCULATE_NEGATIVE_AREA = 2;
gernotbelger@9182: public static final int CALCULATE_ALL_AREA = CALCULATE_POSITIVE_AREA | CALCULATE_NEGATIVE_AREA;
sascha@2108:
sascha@1823: /** For serialization. */
sascha@1823: private static final long serialVersionUID = -8447915602375584857L;
sascha@1823:
gernotbelger@9182: private boolean drawArea = true;
gernotbelger@9182:
teichmann@7910: /** The paint used to highlight positive differences (y(0) > y(1)). */
sascha@1823: private transient Paint positivePaint;
sascha@1823:
sascha@1823: /** The paint used to highlight negative differences (y(0) < y(1)). */
sascha@1823: private transient Paint negativePaint;
sascha@1823:
sascha@1823: /** Display shapes at each point? */
sascha@1823: private boolean shapesVisible;
sascha@1823:
felix@2071: /** Display shapes at each point? */
gernotbelger@9182: private boolean drawOutline;
felix@2071:
felix@2071: /** Which stroke to draw outline with? */
gernotbelger@9182: private Stroke outlineStroke;
felix@2071:
felix@2071: /** Which paint to draw outline with? */
gernotbelger@9182: private Paint outlinePaint;
felix@2071:
sascha@1823: /** The shape to display in the legend item. */
felix@2021: private transient Shape legendShape;
sascha@1823:
gernotbelger@9182: private final boolean drawOriginalSeries;
felix@2071:
felix@2666: /** The color of the label showing the calculated area. */
gernotbelger@9182: private Color labelColor;
felix@2666:
felix@2667: /** The background color of the label showing the calculated area. */
gernotbelger@9182: private Color labelBGColor;
felix@2667:
felix@2666: /** Font to draw label of calculated area with. */
gernotbelger@9182: private Font labelFont;
felix@2666:
ingo@3785: /** Template to create i18ned label for area. */
gernotbelger@9182: private String areaLabelTamplate;
ingo@3785:
ingo@3785: /** NumberFormat to use for area. */
gernotbelger@9182: private NumberFormat areaLabelNumberFormat;
ingo@3785:
gernotbelger@9182: private int areaCalculationMode;
sascha@2108:
gernotbelger@9182: private double positiveArea;
gernotbelger@9182:
gernotbelger@9182: private double negativeArea;
sascha@2108:
felix@2666: /** Whether or not to draw a label in the area. */
gernotbelger@9182: private boolean labelArea = true;
sascha@1824:
felix@2667: /** Arithmetic centroid of drawn polygons. */
gernotbelger@9182: private Point2D.Double centroid;
felix@2667:
felix@2667: /** Number of points that contributed to the centroid. */
gernotbelger@9182: private int centroidNPoints = 0;
felix@2667:
sascha@1823: /**
sascha@1823: * This flag controls whether or not the x-coordinates (in Java2D space)
gernotbelger@9182: * are rounded to integers. When set to true, this can avoid the vertical
gernotbelger@9182: * striping that anti-aliasing can generate. However, the rounding may not
sascha@1823: * be appropriate for output in high resolution formats (for example,
sascha@1823: * vector graphics formats such as SVG and PDF).
sascha@1823: *
sascha@1823: * @since 1.0.4
sascha@1823: */
gernotbelger@9182: private final boolean roundXCoordinates;
sascha@1823:
sascha@1823: /**
sascha@1823: * Creates a new renderer with default attributes.
sascha@1823: */
sascha@1823: public StableXYDifferenceRenderer() {
gernotbelger@9182: this(Color.green, Color.red, false, CALCULATE_ALL_AREA);
sascha@2108: }
sascha@2108:
sascha@1823: /**
sascha@1823: * Creates a new renderer.
sascha@1823: *
gernotbelger@9182: * @param positivePaint
gernotbelger@9182: * the highlight color for positive differences
gernotbelger@9182: * (null
not permitted).
gernotbelger@9182: * @param negativePaint
gernotbelger@9182: * the highlight color for negative differences
gernotbelger@9182: * (null
not permitted).
gernotbelger@9182: * @param shapes
gernotbelger@9182: * draw shapes?
sascha@1823: */
gernotbelger@9182: private StableXYDifferenceRenderer(final Paint positivePaint, final Paint negativePaint, final boolean shapes, final int areaCalculationMode) {
sascha@1823: if (positivePaint == null) {
gernotbelger@9182: throw new IllegalArgumentException("Null 'positivePaint' argument.");
sascha@1823: }
sascha@1823: if (negativePaint == null) {
gernotbelger@9182: throw new IllegalArgumentException("Null 'negativePaint' argument.");
sascha@1823: }
sascha@1823: this.positivePaint = positivePaint;
sascha@1823: this.negativePaint = negativePaint;
sascha@1823: this.shapesVisible = shapes;
gernotbelger@9182: this.legendShape = new Rectangle2D.Double(-3.0, -3.0, 10.0, 10.0);
sascha@1823: this.roundXCoordinates = false;
gernotbelger@9182: this.drawOutline = true;
felix@2071: this.outlineStroke = new BasicStroke(1);
gernotbelger@9182: this.outlinePaint = Color.black;
felix@2071: this.drawOriginalSeries = false;
sascha@2108: this.areaCalculationMode = areaCalculationMode;
gernotbelger@9182: this.labelBGColor = null;
gernotbelger@9182: this.centroid = new Point2D.Double(0, 0);
sascha@1823: }
sascha@1823:
gernotbelger@9182: public void setAreaCalculationMode(final int areaCalculationMode) {
sascha@2108: this.areaCalculationMode = areaCalculationMode;
sascha@2108: }
sascha@2108:
ingo@3785: /** Set template to use to create area label (e.g. 'Area=%dm2'). */
gernotbelger@9182: public void setAreaLabelTemplate(final String areaTemplate) {
ingo@3785: this.areaLabelTamplate = areaTemplate;
ingo@3785: }
ingo@3785:
gernotbelger@9182: public void setAreaLabelNumberFormat(final NumberFormat nf) {
ingo@3785: this.areaLabelNumberFormat = nf;
ingo@3785: }
ingo@3785:
gernotbelger@9182: public void setLabelArea(final boolean label) {
felix@2666: this.labelArea = label;
felix@2666: }
felix@2666:
felix@2666: /** Set font to paint label with. */
gernotbelger@9182: public void setLabelFont(final Font font) {
felix@2666: this.labelFont = font;
felix@2666: }
felix@2666:
felix@2666: /** Set color with which to paint label. */
gernotbelger@9182: public void setLabelColor(final Color color) {
felix@2666: this.labelColor = color;
felix@2666: }
felix@2666:
felix@2667: /** Set color with which to paint label bg. */
gernotbelger@9182: public void setLabelBGColor(final Color color) {
felix@2667: this.labelBGColor = color;
felix@2667: }
felix@2667:
felix@2071: /**
felix@2071: * Sets color that is used if drawOutline is true.
felix@2071: */
gernotbelger@9182: @Override
gernotbelger@9182: public void setOutlinePaint(final Paint outlinePaint) {
felix@2071: this.outlinePaint = outlinePaint;
felix@2071: }
felix@2071:
felix@2071: /**
felix@2071: * Sets Stroke that is used if drawOutline is true.
felix@2071: */
gernotbelger@9182: @Override
gernotbelger@9182: public void setOutlineStroke(final Stroke stroke) {
felix@2071: this.outlineStroke = stroke;
felix@2071: }
felix@2071:
felix@2071: /**
felix@2071: * Whether or not to draw the 'Shape' of the area (in contrast to
felix@2071: * shapes at data items).
felix@2071: */
gernotbelger@9182: public void setDrawOutline(final boolean doDrawOutline) {
felix@2071: this.drawOutline = doDrawOutline;
felix@2071: }
felix@2071:
gernotbelger@9182: public void setDrawArea(final boolean doDrawArea) {
gernotbelger@9182: this.drawArea = doDrawArea;
felix@2071: }
felix@2071:
sascha@1823: /**
sascha@1823: * Returns the paint used to highlight positive differences.
sascha@1823: *
sascha@1823: * @return The paint (never null
).
sascha@1823: *
sascha@1823: * @see #setPositivePaint(Paint)
sascha@1823: */
gernotbelger@9182: private Paint getPositivePaint() {
sascha@1823: return this.positivePaint;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Sets the paint used to highlight positive differences and sends a
sascha@1823: * {@link RendererChangeEvent} to all registered listeners.
sascha@1823: *
gernotbelger@9182: * @param paint
gernotbelger@9182: * the paint (null
not permitted).
sascha@1823: *
sascha@1823: * @see #getPositivePaint()
sascha@1823: */
gernotbelger@9182: public void setPositivePaint(final Paint paint) {
sascha@1823: this.positivePaint = paint;
sascha@1823: fireChangeEvent();
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Returns the paint used to highlight negative differences.
sascha@1823: *
sascha@1823: * @return The paint (never null
).
sascha@1823: *
sascha@1823: * @see #setNegativePaint(Paint)
sascha@1823: */
gernotbelger@9182: private Paint getNegativePaint() {
sascha@1823: return this.negativePaint;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Sets the paint used to highlight negative differences.
sascha@1823: *
gernotbelger@9182: * @param paint
gernotbelger@9182: * the paint (null
not permitted).
sascha@1823: *
sascha@1823: * @see #getNegativePaint()
sascha@1823: */
gernotbelger@9182: public void setNegativePaint(final Paint paint) {
sascha@1823: this.negativePaint = paint;
sascha@1823: notifyListeners(new RendererChangeEvent(this));
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Returns a flag that controls whether or not shapes are drawn for each
sascha@1823: * data value.
sascha@1823: *
sascha@1823: * @return A boolean.
sascha@1823: *
sascha@1823: * @see #setShapesVisible(boolean)
sascha@1823: */
gernotbelger@9182: private boolean getShapesVisible() {
sascha@1823: return this.shapesVisible;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Sets a flag that controls whether or not shapes are drawn for each
sascha@1823: * data value, and sends a {@link RendererChangeEvent} to all registered
sascha@1823: * listeners.
sascha@1823: *
gernotbelger@9182: * @param flag
gernotbelger@9182: * the flag.
sascha@1823: *
sascha@1823: * @see #getShapesVisible()
sascha@1823: */
gernotbelger@9182: public void setShapesVisible(final boolean flag) {
sascha@1823: this.shapesVisible = flag;
sascha@1823: fireChangeEvent();
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Returns the shape used to represent a line in the legend.
sascha@1823: *
sascha@1823: * @return The legend line (never null
).
sascha@1823: *
sascha@1823: * @see #setLegendLine(Shape)
sascha@1823: */
gernotbelger@9182: private Shape getLegendLine() {
felix@2021: return this.legendShape;
sascha@1823: }
sascha@1823:
sascha@1823: /**
gernotbelger@9182: * Initializes the renderer and returns a state object that should be
gernotbelger@9182: * passed to subsequent calls to the drawItem() method. This method will
sascha@1823: * be called before the first item is rendered, giving the renderer an
gernotbelger@9182: * opportunity to initialize any state information it wants to maintain.
sascha@1823: * The renderer can do nothing if it chooses.
sascha@1823: *
gernotbelger@9182: * @param g2
gernotbelger@9182: * the graphics device.
gernotbelger@9182: * @param dataArea
gernotbelger@9182: * the (visible) area inside the axes.
gernotbelger@9182: * @param plot
gernotbelger@9182: * the plot.
gernotbelger@9182: * @param data
gernotbelger@9182: * the data.
gernotbelger@9182: * @param info
gernotbelger@9182: * an optional info collection object to return data back to
gernotbelger@9182: * the caller.
sascha@1823: *
sascha@1823: * @return A state object.
sascha@1823: */
gernotbelger@9182: @Override
gernotbelger@9182: public XYItemRendererState initialise(final Graphics2D g2, final Rectangle2D dataArea, final XYPlot plot, final XYDataset data,
gernotbelger@9182: final PlotRenderingInfo info) {
sascha@1823:
gernotbelger@9182: final XYItemRendererState state = super.initialise(g2, dataArea, plot, data, info);
sascha@1823: state.setProcessVisibleItemsOnly(false);
sascha@1823: return state;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Returns 2
, the number of passes required by the renderer.
sascha@1823: * The {@link XYPlot} will run through the dataset this number of times.
sascha@1823: *
sascha@1823: * @return The number of passes required by the renderer.
sascha@1823: */
gernotbelger@9182: @Override
sascha@1823: public int getPassCount() {
sascha@1823: return 2;
sascha@1823: }
sascha@1823:
felix@3395: /**
felix@3395: * Adds x/y data to series.
felix@3395: */
gernotbelger@9182: private static final void addSeries(final DefaultXYDataset ds, final Comparable key, final TDoubleArrayList xs, final TDoubleArrayList ys) {
gernotbelger@9182: ds.addSeries(key, new double[][] { xs.toNativeArray(), ys.toNativeArray() });
sascha@1884: }
sascha@1884:
gernotbelger@9182: private static List splitByNaNsOneSeries(final XYDataset dataset) {
gernotbelger@9182: final List datasets = new ArrayList<>();
sascha@1883:
gernotbelger@9182: final int N = dataset.getItemCount(0);
gernotbelger@9182: final TDoubleArrayList xs = new TDoubleArrayList(N);
gernotbelger@9182: final TDoubleArrayList ys = new TDoubleArrayList(N);
sascha@1884: for (int i = 0; i < N; ++i) {
gernotbelger@9182: final double x = dataset.getXValue(0, i);
gernotbelger@9182: final double y = dataset.getYValue(0, i);
sascha@1884: if (Double.isNaN(x) || Double.isNaN(y)) {
sascha@1883: if (!xs.isEmpty()) {
gernotbelger@9182: final DefaultXYDataset ds = new DefaultXYDataset();
sascha@1884: addSeries(ds, dataset.getSeriesKey(0), xs, ys);
sascha@1883: datasets.add(ds);
sascha@1885: xs.resetQuick();
sascha@1885: ys.resetQuick();
sascha@1883: }
gernotbelger@9182: } else {
sascha@1884: xs.add(x);
sascha@1884: ys.add(y);
sascha@1884: }
sascha@1884: }
sascha@1884: if (!xs.isEmpty()) {
gernotbelger@9182: final DefaultXYDataset ds = new DefaultXYDataset();
sascha@1884: addSeries(ds, dataset.getSeriesKey(0), xs, ys);
sascha@1884: datasets.add(ds);
sascha@1883: }
sascha@1883:
sascha@1883: return datasets;
sascha@1883: }
sascha@1883:
gernotbelger@9182: private static final boolean add(final TDoubleArrayList xs, final double x) {
gernotbelger@9182: final int N = xs.size();
gernotbelger@9182: if (N == 0 || xs.getQuick(N - 1) < x) {
sascha@1884: xs.add(x);
sascha@1884: return true;
sascha@1884: }
sascha@1884: return false;
sascha@1884: }
sascha@1884:
gernotbelger@9182: private static boolean hasNaN(final XYDataset dataset) {
gernotbelger@9182: final int N = dataset.getItemCount(0);
gernotbelger@9182: final int M = dataset.getItemCount(1);
andre@8748:
andre@8749: for (int i = 0; i < N; ++i) {
gernotbelger@9182: final double x = dataset.getXValue(0, i);
gernotbelger@9182: final double y = dataset.getYValue(0, i);
andre@8748: if (Double.isNaN(x) || Double.isNaN(y)) {
andre@8748: return true;
andre@8748: }
andre@8748: }
andre@8748:
andre@8749: for (int j = 0; j < M; ++j) {
gernotbelger@9182: final double x = dataset.getXValue(1, j);
gernotbelger@9182: final double y = dataset.getYValue(1, j);
andre@8748: if (Double.isNaN(x) || Double.isNaN(y)) {
andre@8748: return true;
andre@8748: }
andre@8748: }
andre@8748: return false;
andre@8748: }
andre@8748:
gernotbelger@9182: private static List splitByNaNsTwoSeries(final XYDataset dataset) {
gernotbelger@9182: final boolean debug = log.isDebugEnabled();
andre@8748:
gernotbelger@9182: final List datasets = new ArrayList<>();
sascha@1884:
andre@8748: if (!hasNaN(dataset)) {
andre@8748: datasets.add(dataset);
andre@8748: return datasets;
andre@8748: }
andre@8748:
gernotbelger@9182: final int N = dataset.getItemCount(0);
gernotbelger@9182: final int M = dataset.getItemCount(1);
sascha@1884:
sascha@1884: int i = 0, j = 0;
sascha@1884: // ignore leading NaNs
sascha@1884: for (; i < N; ++i) {
gernotbelger@9182: final double x = dataset.getXValue(0, i);
gernotbelger@9182: final double y = dataset.getYValue(0, i);
sascha@1884: if (!Double.isNaN(x) && !Double.isNaN(y)) {
sascha@1884: break;
sascha@1884: }
sascha@1884: }
sascha@1884:
sascha@1884: for (; j < M; ++j) {
gernotbelger@9182: final double x = dataset.getXValue(1, j);
gernotbelger@9182: final double y = dataset.getYValue(1, j);
sascha@1884: if (!Double.isNaN(x) && !Double.isNaN(y)) {
sascha@1884: break;
sascha@1884: }
sascha@1884: }
sascha@1884:
gernotbelger@9182: final TDoubleArrayList six = new TDoubleArrayList();
gernotbelger@9182: final TDoubleArrayList siy = new TDoubleArrayList();
gernotbelger@9182: final TDoubleArrayList sjx = new TDoubleArrayList();
gernotbelger@9182: final TDoubleArrayList sjy = new TDoubleArrayList();
sascha@1884:
sascha@1884: while (i < N && j < M) {
gernotbelger@9182: int ni = i + 1;
gernotbelger@9182: for (; ni < N && !Double.isNaN(dataset.getXValue(0, ni)); ++ni)
gernotbelger@9182: ;
gernotbelger@9182: for (; ni < N && Double.isNaN(dataset.getXValue(0, ni)); ++ni)
gernotbelger@9182: ;
sascha@1884:
gernotbelger@9182: int nj = j + 1;
gernotbelger@9182: for (; nj < M && !Double.isNaN(dataset.getXValue(1, nj)); ++nj)
gernotbelger@9182: ;
gernotbelger@9182: for (; nj < M && Double.isNaN(dataset.getXValue(1, nj)); ++nj)
gernotbelger@9182: ;
sascha@1884:
sascha@1884: if (ni == N && nj == M) { // no more splits
sascha@2107: log.debug("no more splits ....");
sascha@1884: for (; i < ni; ++i) {
gernotbelger@9182: final double x = dataset.getXValue(0, i);
gernotbelger@9182: final double y = dataset.getYValue(0, i);
gernotbelger@9182: if (!Double.isNaN(x) && !Double.isNaN(y) && add(six, x)) {
sascha@1884: siy.add(y);
sascha@1884: }
sascha@1884: }
sascha@1884: for (; j < nj; ++j) {
gernotbelger@9182: final double x = dataset.getXValue(1, j);
gernotbelger@9182: final double y = dataset.getYValue(1, j);
gernotbelger@9182: if (!Double.isNaN(x) && !Double.isNaN(y) && add(sjx, x)) {
sascha@1884: sjy.add(y);
sascha@1884: }
sascha@1884: }
sascha@1884: if (!six.isEmpty() && !sjx.isEmpty()) {
gernotbelger@9182: final DefaultXYDataset ds = new DefaultXYDataset();
sascha@1884: addSeries(ds, dataset.getSeriesKey(0), six, siy);
sascha@1884: addSeries(ds, dataset.getSeriesKey(1), sjx, sjy);
sascha@1884: datasets.add(ds);
sascha@1884: }
sascha@1884: break;
sascha@1884: }
sascha@1884:
sascha@2107: if (debug) {
sascha@2107: log.debug("ni: " + ni + " " + N);
sascha@2107: log.debug("nj: " + nj + " " + M);
sascha@2107: }
sascha@1884:
gernotbelger@9182: final double xni = ni < N ? dataset.getXValue(0, ni) : Double.MAX_VALUE;
sascha@1884:
gernotbelger@9182: final double xnj = nj < M ? dataset.getXValue(1, nj) : Double.MAX_VALUE;
sascha@1884:
gernotbelger@9182: final double xns = Math.min(xni, xnj);
sascha@1884:
sascha@1884: double pushxi = Double.NaN;
sascha@1884: double pushyi = Double.NaN;
sascha@1884: double pushxj = Double.NaN;
sascha@1884: double pushyj = Double.NaN;
sascha@1884:
sascha@1884: for (; i < ni; ++i) {
gernotbelger@9182: final double x = dataset.getXValue(0, i);
gernotbelger@9182: final double y = dataset.getYValue(0, i);
sascha@1884: if (Double.isNaN(x) || Double.isNaN(y)) {
sascha@1884: continue;
sascha@1884: }
sascha@1884: if (x < xns) {
sascha@1884: if (add(six, x)) {
sascha@1884: siy.add(y);
sascha@1884: }
sascha@1884: continue;
sascha@1884: }
sascha@1884: if (x == xns) { // exact match
sascha@1884: if (add(six, x)) {
sascha@1884: siy.add(y);
sascha@1884: }
gernotbelger@9182: pushxi = x;
gernotbelger@9182: pushyi = y;
gernotbelger@9182: } else { // x > xns: intersection
sascha@2107: if (debug) {
sascha@2107: log.debug("xns: " + xns);
sascha@2107: log.debug("x/y: " + x + " / " + y);
sascha@2107: }
gernotbelger@9182: final int SIX = six.size();
sascha@1884: if (SIX > 0) { // should always be true
gernotbelger@9182: final double yns = Linear.linear(xns, six.getQuick(SIX - 1), x, siy.getQuick(SIX - 1), y);
sascha@2107: if (debug) {
sascha@2107: log.debug("intersection at: " + yns);
sascha@2107: }
sascha@1884: if (add(six, xns)) {
sascha@1884: siy.add(yns);
sascha@1884: }
sascha@1884: pushxi = xns;
sascha@1884: pushyi = yns;
sascha@1884: }
sascha@1884: }
sascha@1884: break; // Split point reached.
sascha@1884: }
sascha@1884:
sascha@1884: for (; j < nj; ++j) {
gernotbelger@9182: final double x = dataset.getXValue(1, j);
gernotbelger@9182: final double y = dataset.getYValue(1, j);
sascha@1884: if (Double.isNaN(x) || Double.isNaN(y)) {
sascha@1884: continue;
sascha@1884: }
sascha@1884: if (x < xns) {
sascha@1884: if (add(sjx, x)) {
sascha@1884: sjy.add(y);
sascha@1884: }
sascha@1884: continue;
sascha@1884: }
sascha@1884: if (x == xns) { // exact match
sascha@1884: if (add(sjx, x)) {
sascha@1884: sjy.add(y);
sascha@1884: }
gernotbelger@9182: pushxj = x;
gernotbelger@9182: pushyj = y;
gernotbelger@9182: } else { // x > xns: intersection
gernotbelger@9182: final int SJX = sjx.size();
sascha@1884: if (SJX > 0) { // should always be true
gernotbelger@9182: final double yns = Linear.linear(xns, sjx.getQuick(SJX - 1), x, sjy.getQuick(SJX - 1), y);
sascha@2107: if (debug) {
sascha@2107: log.debug("intersection at: " + yns);
sascha@2107: }
sascha@1884: if (add(sjx, xns)) {
sascha@1884: sjy.add(yns);
sascha@1884: }
gernotbelger@9182: pushxj = xns;
gernotbelger@9182: pushyj = yns;
sascha@1884: }
sascha@1884: }
sascha@1884: break; // Split point reached.
sascha@1884: }
sascha@1884:
sascha@1884: if (!six.isEmpty() && !sjx.isEmpty()) {
gernotbelger@9182: final DefaultXYDataset ds = new DefaultXYDataset();
sascha@1884: addSeries(ds, dataset.getSeriesKey(0), six, siy);
sascha@1884: addSeries(ds, dataset.getSeriesKey(1), sjx, sjy);
sascha@1884: datasets.add(ds);
sascha@1884: }
sascha@1884:
gernotbelger@9182: six.resetQuick();
gernotbelger@9182: siy.resetQuick();
gernotbelger@9182: sjx.resetQuick();
gernotbelger@9182: sjy.resetQuick();
sascha@1884:
sascha@1884: // Push split points.
sascha@1884: if (!Double.isNaN(pushxi)) {
sascha@1884: six.add(pushxi);
sascha@1884: siy.add(pushyi);
sascha@1884: }
sascha@1884:
sascha@1884: if (!Double.isNaN(pushxj)) {
sascha@1884: sjx.add(pushxj);
sascha@1884: sjy.add(pushyj);
sascha@1884: }
sascha@1884: }
sascha@1884:
sascha@1884: // Copy the rest.
sascha@1884: for (; i < N; ++i) {
gernotbelger@9182: final double x = dataset.getXValue(0, i);
gernotbelger@9182: final double y = dataset.getXValue(0, i);
gernotbelger@9182: if (!Double.isNaN(x) && !Double.isNaN(y) && add(six, x)) {
sascha@1884: siy.add(y);
sascha@1884: }
sascha@1884: }
sascha@1884:
sascha@1884: for (; j < M; ++j) {
gernotbelger@9182: final double x = dataset.getXValue(1, j);
gernotbelger@9182: final double y = dataset.getXValue(1, j);
gernotbelger@9182: if (!Double.isNaN(x) && !Double.isNaN(y) && add(sjx, x)) {
sascha@1884: sjy.add(y);
sascha@1884: }
sascha@1884: }
sascha@1884:
sascha@1884: // Build final dataset.
sascha@1884: if (!six.isEmpty() && !sjx.isEmpty()) {
gernotbelger@9182: final DefaultXYDataset ds = new DefaultXYDataset();
sascha@1884: addSeries(ds, dataset.getSeriesKey(0), six, siy);
sascha@1884: addSeries(ds, dataset.getSeriesKey(1), sjx, sjy);
sascha@1884: datasets.add(ds);
sascha@1884: }
sascha@1884:
sascha@2107: if (debug) {
sascha@2107: log.debug("datasets after split: " + datasets.size());
sascha@2107: }
sascha@1884:
andre@8748: /*
gernotbelger@9182: * log.debug("Begin dump datasets: ");
gernotbelger@9182: * log.debug("Original");
gernotbelger@9182: * i=0;
gernotbelger@9182: * dumpDataset(dataset, "Original" );
gernotbelger@9182: * for (XYDataset set: datasets) {
gernotbelger@9182: * dumpDataset(dataset, "New: " + i++);
gernotbelger@9182: * }
gernotbelger@9182: * log.debug("End dump datasets: ");
gernotbelger@9182: */
andre@8748:
sascha@1884: return datasets;
sascha@1884: }
sascha@1884:
andre@8748: /*
gernotbelger@9182: * public static void dumpDataset(XYDataset dataset, String msg) {
gernotbelger@9182: * log.debug("Begin dump Dataset: " + msg);
gernotbelger@9182: * int N = dataset.getItemCount(0);
gernotbelger@9182: * int M = dataset.getItemCount(1);
gernotbelger@9182: * int i = 0, j = 0;
gernotbelger@9182: * for (; i < N; ++i) {
gernotbelger@9182: * double x = dataset.getXValue(0, i);
gernotbelger@9182: * double y = dataset.getYValue(0, i);
gernotbelger@9182: * log.debug("0 " + i + " X: "+ x + "Y: "+ y);
gernotbelger@9182: * }
gernotbelger@9182: * for (; j < M; ++j) {
gernotbelger@9182: * double x = dataset.getXValue(1, j);
gernotbelger@9182: * double y = dataset.getYValue(1, j);
gernotbelger@9182: * log.debug("1 " + i + " X: "+ x + "Y: "+ y);
gernotbelger@9182: * }
gernotbelger@9182: * log.debug("End dump Dataset: " + msg);
gernotbelger@9182: * }
gernotbelger@9182: */
andre@8748:
gernotbelger@9182: private static List splitByNaNs(final XYDataset dataset) {
sascha@1884:
sascha@1884: switch (dataset.getSeriesCount()) {
gernotbelger@9182: case 0:
gernotbelger@9182: return Collections.emptyList();
gernotbelger@9182: case 1:
gernotbelger@9182: return splitByNaNsOneSeries(dataset);
gernotbelger@9182: default: // two or more
gernotbelger@9182: return splitByNaNsTwoSeries(dataset);
sascha@1884: }
sascha@1884: }
sascha@1884:
sascha@1823: /**
sascha@1823: * Draws the visual representation of a single data item.
sascha@1823: *
gernotbelger@9182: * @param g2
gernotbelger@9182: * the graphics device.
gernotbelger@9182: * @param state
gernotbelger@9182: * the renderer state.
gernotbelger@9182: * @param dataArea
gernotbelger@9182: * the area within which the data is being drawn.
gernotbelger@9182: * @param info
gernotbelger@9182: * collects information about the drawing.
gernotbelger@9182: * @param plot
gernotbelger@9182: * the plot (can be used to obtain standard color
gernotbelger@9182: * information etc).
gernotbelger@9182: * @param domainAxis
gernotbelger@9182: * the domain (horizontal) axis.
gernotbelger@9182: * @param rangeAxis
gernotbelger@9182: * the range (vertical) axis.
gernotbelger@9182: * @param dataset
gernotbelger@9182: * the dataset.
gernotbelger@9182: * @param series
gernotbelger@9182: * the series index (zero-based).
gernotbelger@9182: * @param item
gernotbelger@9182: * the item index (zero-based).
gernotbelger@9182: * @param crosshairState
gernotbelger@9182: * crosshair information for the plot
gernotbelger@9182: * (null
permitted).
gernotbelger@9182: * @param pass
gernotbelger@9182: * the pass index.
sascha@1823: */
gernotbelger@9182: @Override
gernotbelger@9182: public void drawItem(final Graphics2D g2, final XYItemRendererState state, final Rectangle2D dataArea, final PlotRenderingInfo info, final XYPlot plot,
gernotbelger@9182: final ValueAxis domainAxis, final ValueAxis rangeAxis, final XYDataset dataset, final int series, final int item,
gernotbelger@9182: final CrosshairState crosshairState, final int pass) {
sascha@1881: switch (pass) {
gernotbelger@9182: case 0:
gernotbelger@9182: for (final XYDataset ds : splitByNaNs(dataset)) {
gernotbelger@9182: drawItemPass0(g2, dataArea, info, plot, domainAxis, rangeAxis, ds, series, item, crosshairState);
gernotbelger@9182: }
gernotbelger@9182: break;
gernotbelger@9182: case 1:
gernotbelger@9182: drawItemPass1(g2, dataArea, info, plot, domainAxis, rangeAxis, dataset, series, item, crosshairState);
sascha@1823: }
felix@2666:
tom@8856: // Find geometric middle, calculate area and paint
tom@8856: // a string with it here.
gernotbelger@9182: if (pass == 1 && this.labelArea && this.areaLabelNumberFormat != null && this.areaLabelTamplate != null) {
gernotbelger@9182: double center_x = this.centroid.getX();
gernotbelger@9182: double center_y = this.centroid.getY();
gernotbelger@9182: center_x = domainAxis.valueToJava2D(center_x, dataArea, plot.getDomainAxisEdge());
gernotbelger@9182: center_y = rangeAxis.valueToJava2D(center_y, dataArea, plot.getRangeAxisEdge());
felix@2667:
felix@2667: // Respect text-extend if text should appear really centered.
felix@2667:
felix@2666: float area = 0f;
gernotbelger@9182: if (this.areaCalculationMode == CALCULATE_POSITIVE_AREA || this.areaCalculationMode == CALCULATE_ALL_AREA) {
gernotbelger@9182: area += Math.abs(this.positiveArea);
felix@2666: }
gernotbelger@9182: if (this.areaCalculationMode == CALCULATE_NEGATIVE_AREA || this.areaCalculationMode == CALCULATE_ALL_AREA) {
gernotbelger@9182: area += Math.abs(this.negativeArea);
felix@2666: }
felix@2666: if (area != 0f) {
gernotbelger@9182: final Color oldColor = g2.getColor();
gernotbelger@9182: final Font oldFont = g2.getFont();
gernotbelger@9182: g2.setFont(this.labelFont);
gernotbelger@9182: final String labelText = String.format(this.areaLabelTamplate, this.areaLabelNumberFormat.format(area));
gernotbelger@9182: if (this.labelBGColor != null) {
gernotbelger@9182: EnhancedLineAndShapeRenderer.drawTextBox(g2, labelText, (float) center_x, (float) center_y, this.labelBGColor);
felix@2667: }
gernotbelger@9182: g2.setColor(this.labelColor);
gernotbelger@9182: g2.drawString(labelText, (float) center_x, (float) center_y);
felix@2666: g2.setFont(oldFont);
felix@2666: g2.setColor(oldColor);
felix@2666: }
felix@2666: }
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Draws the visual representation of a single data item, first pass.
sascha@1823: *
gernotbelger@9182: * @param x_graphics
gernotbelger@9182: * the graphics device.
gernotbelger@9182: * @param x_dataArea
gernotbelger@9182: * the area within which the data is being drawn.
gernotbelger@9182: * @param x_info
gernotbelger@9182: * collects information about the drawing.
gernotbelger@9182: * @param x_plot
gernotbelger@9182: * the plot (can be used to obtain standard color
gernotbelger@9182: * information etc).
gernotbelger@9182: * @param x_domainAxis
gernotbelger@9182: * the domain (horizontal) axis.
gernotbelger@9182: * @param x_rangeAxis
gernotbelger@9182: * the range (vertical) axis.
gernotbelger@9182: * @param x_dataset
gernotbelger@9182: * the dataset.
gernotbelger@9182: * @param x_series
gernotbelger@9182: * the series index (zero-based).
gernotbelger@9182: * @param x_item
gernotbelger@9182: * the item index (zero-based).
gernotbelger@9182: * @param x_crosshairState
gernotbelger@9182: * crosshair information for the plot
gernotbelger@9182: * (null
permitted).
sascha@1823: */
gernotbelger@9182: private void drawItemPass0(final Graphics2D x_graphics, final Rectangle2D x_dataArea, final PlotRenderingInfo x_info, final XYPlot x_plot,
gernotbelger@9182: final ValueAxis x_domainAxis, final ValueAxis x_rangeAxis, final XYDataset x_dataset, final int x_series, final int x_item,
gernotbelger@9182: final CrosshairState x_crosshairState) {
sascha@1823:
sascha@1823: if (!((0 == x_series) && (0 == x_item))) {
sascha@1823: return;
sascha@1823: }
sascha@1823:
gernotbelger@9182: final boolean b_impliedZeroSubtrahend = (1 == x_dataset.getSeriesCount());
sascha@1823:
sascha@1823: // check if either series is a degenerate case (i.e. less than 2 points)
sascha@1823: if (isEitherSeriesDegenerate(x_dataset, b_impliedZeroSubtrahend)) {
sascha@1823: return;
sascha@1823: }
sascha@1823:
sascha@1823: // check if series are disjoint (i.e. domain-spans do not overlap)
sascha@1823: if (!b_impliedZeroSubtrahend && areSeriesDisjoint(x_dataset)) {
sascha@1823: return;
sascha@1823: }
sascha@1823:
sascha@1823: // polygon definitions
gernotbelger@9182: final List l_minuendXs = new LinkedList<>();
gernotbelger@9182: final List l_minuendYs = new LinkedList<>();
gernotbelger@9182: final List l_subtrahendXs = new LinkedList<>();
gernotbelger@9182: final List l_subtrahendYs = new LinkedList<>();
gernotbelger@9182: final List l_polygonXs = new LinkedList<>();
gernotbelger@9182: final List l_polygonYs = new LinkedList<>();
sascha@1823:
sascha@1823: // state
gernotbelger@9182: int l_minuendItem = 0;
gernotbelger@9182: final int l_minuendItemCount = x_dataset.getItemCount(0);
gernotbelger@9182: Double l_minuendCurX = null;
gernotbelger@9182: Double l_minuendNextX = null;
gernotbelger@9182: Double l_minuendCurY = null;
gernotbelger@9182: Double l_minuendNextY = null;
gernotbelger@9182: double l_minuendMaxY = Double.NEGATIVE_INFINITY;
gernotbelger@9182: double l_minuendMinY = Double.POSITIVE_INFINITY;
sascha@1823:
gernotbelger@9182: int l_subtrahendItem = 0;
sascha@1823: int l_subtrahendItemCount = 0; // actual value set below
gernotbelger@9182: Double l_subtrahendCurX = null;
gernotbelger@9182: Double l_subtrahendNextX = null;
gernotbelger@9182: Double l_subtrahendCurY = null;
gernotbelger@9182: Double l_subtrahendNextY = null;
gernotbelger@9182: double l_subtrahendMaxY = Double.NEGATIVE_INFINITY;
gernotbelger@9182: double l_subtrahendMinY = Double.POSITIVE_INFINITY;
sascha@1823:
sascha@1823: // if a subtrahend is not specified, assume it is zero
sascha@1823: if (b_impliedZeroSubtrahend) {
gernotbelger@9182: l_subtrahendItem = 0;
sascha@1823: l_subtrahendItemCount = 2;
gernotbelger@9182: l_subtrahendCurX = new Double(x_dataset.getXValue(0, 0));
gernotbelger@9182: l_subtrahendNextX = new Double(x_dataset.getXValue(0, (l_minuendItemCount - 1)));
gernotbelger@9182: l_subtrahendCurY = new Double(0.0);
gernotbelger@9182: l_subtrahendNextY = new Double(0.0);
gernotbelger@9182: l_subtrahendMaxY = 0.0;
gernotbelger@9182: l_subtrahendMinY = 0.0;
sascha@1823:
sascha@1823: l_subtrahendXs.add(l_subtrahendCurX);
sascha@1823: l_subtrahendYs.add(l_subtrahendCurY);
gernotbelger@9182: } else {
sascha@1823: l_subtrahendItemCount = x_dataset.getItemCount(1);
sascha@1823: }
sascha@1823:
gernotbelger@9182: boolean b_minuendDone = false;
gernotbelger@9182: boolean b_minuendAdvanced = true;
gernotbelger@9182: boolean b_minuendAtIntersect = false;
gernotbelger@9182: boolean b_minuendFastForward = false;
gernotbelger@9182: boolean b_subtrahendDone = false;
gernotbelger@9182: boolean b_subtrahendAdvanced = true;
sascha@1823: boolean b_subtrahendAtIntersect = false;
sascha@1823: boolean b_subtrahendFastForward = false;
gernotbelger@9182: boolean b_colinear = false;
sascha@1823:
sascha@1823: boolean b_positive;
sascha@1823:
sascha@1823: // coordinate pairs
sascha@1823: double l_x1 = 0.0, l_y1 = 0.0; // current minuend point
sascha@1823: double l_x2 = 0.0, l_y2 = 0.0; // next minuend point
sascha@1823: double l_x3 = 0.0, l_y3 = 0.0; // current subtrahend point
sascha@1823: double l_x4 = 0.0, l_y4 = 0.0; // next subtrahend point
sascha@1823:
sascha@1823: // fast-forward through leading tails
sascha@1823: boolean b_fastForwardDone = false;
sascha@1823: while (!b_fastForwardDone) {
sascha@1823: // get the x and y coordinates
sascha@1823: l_x1 = x_dataset.getXValue(0, l_minuendItem);
sascha@1823: l_y1 = x_dataset.getYValue(0, l_minuendItem);
sascha@1823: l_x2 = x_dataset.getXValue(0, l_minuendItem + 1);
sascha@1823: l_y2 = x_dataset.getYValue(0, l_minuendItem + 1);
sascha@1823:
gernotbelger@9182: l_minuendCurX = new Double(l_x1);
gernotbelger@9182: l_minuendCurY = new Double(l_y1);
sascha@1823: l_minuendNextX = new Double(l_x2);
sascha@1823: l_minuendNextY = new Double(l_y2);
sascha@1823:
sascha@1823: if (b_impliedZeroSubtrahend) {
sascha@1823: l_x3 = l_subtrahendCurX.doubleValue();
sascha@1823: l_y3 = l_subtrahendCurY.doubleValue();
sascha@1823: l_x4 = l_subtrahendNextX.doubleValue();
sascha@1823: l_y4 = l_subtrahendNextY.doubleValue();
gernotbelger@9182: } else {
sascha@1823: l_x3 = x_dataset.getXValue(1, l_subtrahendItem);
sascha@1823: l_y3 = x_dataset.getYValue(1, l_subtrahendItem);
sascha@1823: l_x4 = x_dataset.getXValue(1, l_subtrahendItem + 1);
sascha@1823: l_y4 = x_dataset.getYValue(1, l_subtrahendItem + 1);
sascha@1823:
gernotbelger@9182: l_subtrahendCurX = new Double(l_x3);
gernotbelger@9182: l_subtrahendCurY = new Double(l_y3);
sascha@1823: l_subtrahendNextX = new Double(l_x4);
sascha@1823: l_subtrahendNextY = new Double(l_y4);
sascha@1823: }
sascha@1823:
sascha@1823: if (l_x2 <= l_x3) {
sascha@1823: // minuend needs to be fast forwarded
sascha@1823: l_minuendItem++;
sascha@1823: b_minuendFastForward = true;
sascha@1823: continue;
sascha@1823: }
sascha@1823:
sascha@1823: if (l_x4 <= l_x1) {
sascha@1823: // subtrahend needs to be fast forwarded
sascha@1823: l_subtrahendItem++;
sascha@1823: b_subtrahendFastForward = true;
sascha@1823: continue;
sascha@1823: }
sascha@1823:
sascha@1823: // check if initial polygon needs to be clipped
sascha@1823: if ((l_x3 < l_x1) && (l_x1 < l_x4)) {
sascha@1823: // project onto subtrahend
gernotbelger@9182: final double l_slope = (l_y4 - l_y3) / (l_x4 - l_x3);
sascha@1823: l_subtrahendCurX = l_minuendCurX;
gernotbelger@9182: l_subtrahendCurY = new Double((l_slope * l_x1) + (l_y3 - (l_slope * l_x3)));
sascha@1823:
sascha@1823: l_subtrahendXs.add(l_subtrahendCurX);
sascha@1823: l_subtrahendYs.add(l_subtrahendCurY);
sascha@1823: }
sascha@1823:
sascha@1823: if ((l_x1 < l_x3) && (l_x3 < l_x2)) {
sascha@1823: // project onto minuend
gernotbelger@9182: final double l_slope = (l_y2 - l_y1) / (l_x2 - l_x1);
gernotbelger@9182: l_minuendCurX = l_subtrahendCurX;
gernotbelger@9182: l_minuendCurY = new Double((l_slope * l_x3) + (l_y1 - (l_slope * l_x1)));
sascha@1823:
sascha@1823: l_minuendXs.add(l_minuendCurX);
sascha@1823: l_minuendYs.add(l_minuendCurY);
sascha@1823: }
sascha@1823:
gernotbelger@9182: l_minuendMaxY = l_minuendCurY.doubleValue();
gernotbelger@9182: l_minuendMinY = l_minuendCurY.doubleValue();
sascha@1823: l_subtrahendMaxY = l_subtrahendCurY.doubleValue();
sascha@1823: l_subtrahendMinY = l_subtrahendCurY.doubleValue();
sascha@1823:
sascha@1823: b_fastForwardDone = true;
sascha@1823: }
sascha@1823:
sascha@1823: // start of algorithm
sascha@1823: while (!b_minuendDone && !b_subtrahendDone) {
sascha@1823: if (!b_minuendDone && !b_minuendFastForward && b_minuendAdvanced) {
sascha@1823: l_x1 = x_dataset.getXValue(0, l_minuendItem);
sascha@1823: l_y1 = x_dataset.getYValue(0, l_minuendItem);
sascha@1823: l_minuendCurX = new Double(l_x1);
sascha@1823: l_minuendCurY = new Double(l_y1);
sascha@1823:
sascha@1823: if (!b_minuendAtIntersect) {
sascha@1823: l_minuendXs.add(l_minuendCurX);
sascha@1823: l_minuendYs.add(l_minuendCurY);
sascha@1823: }
sascha@1823:
sascha@1823: l_minuendMaxY = Math.max(l_minuendMaxY, l_y1);
sascha@1823: l_minuendMinY = Math.min(l_minuendMinY, l_y1);
sascha@1823:
sascha@1823: l_x2 = x_dataset.getXValue(0, l_minuendItem + 1);
sascha@1823: l_y2 = x_dataset.getYValue(0, l_minuendItem + 1);
sascha@1823: l_minuendNextX = new Double(l_x2);
sascha@1823: l_minuendNextY = new Double(l_y2);
sascha@1823: }
sascha@1823:
sascha@1823: // never updated the subtrahend if it is implied to be zero
gernotbelger@9182: if (!b_impliedZeroSubtrahend && !b_subtrahendDone && !b_subtrahendFastForward && b_subtrahendAdvanced) {
sascha@1823: l_x3 = x_dataset.getXValue(1, l_subtrahendItem);
sascha@1823: l_y3 = x_dataset.getYValue(1, l_subtrahendItem);
sascha@1823: l_subtrahendCurX = new Double(l_x3);
sascha@1823: l_subtrahendCurY = new Double(l_y3);
sascha@1823:
sascha@1823: if (!b_subtrahendAtIntersect) {
sascha@1823: l_subtrahendXs.add(l_subtrahendCurX);
sascha@1823: l_subtrahendYs.add(l_subtrahendCurY);
sascha@1823: }
sascha@1823:
sascha@1823: l_subtrahendMaxY = Math.max(l_subtrahendMaxY, l_y3);
sascha@1823: l_subtrahendMinY = Math.min(l_subtrahendMinY, l_y3);
sascha@1823:
sascha@1823: l_x4 = x_dataset.getXValue(1, l_subtrahendItem + 1);
sascha@1823: l_y4 = x_dataset.getYValue(1, l_subtrahendItem + 1);
sascha@1823: l_subtrahendNextX = new Double(l_x4);
sascha@1823: l_subtrahendNextY = new Double(l_y4);
sascha@1823: }
sascha@1823:
sascha@1823: // deassert b_*FastForward (only matters for 1st time through loop)
gernotbelger@9182: b_minuendFastForward = false;
sascha@1823: b_subtrahendFastForward = false;
sascha@1823:
sascha@1823: Double l_intersectX = null;
sascha@1823: Double l_intersectY = null;
sascha@1823: boolean b_intersect = false;
sascha@1823:
gernotbelger@9182: b_minuendAtIntersect = false;
sascha@1823: b_subtrahendAtIntersect = false;
sascha@1823:
sascha@1823: // check for intersect
sascha@1823: if ((l_x2 == l_x4) && (l_y2 == l_y4)) {
sascha@1823: // check if line segments are colinear
sascha@1823: if ((l_x1 == l_x3) && (l_y1 == l_y3)) {
sascha@1823: b_colinear = true;
gernotbelger@9182: } else {
sascha@1823: // the intersect is at the next point for both the minuend
sascha@1823: // and subtrahend
sascha@1823: l_intersectX = new Double(l_x2);
sascha@1823: l_intersectY = new Double(l_y2);
sascha@1823:
gernotbelger@9182: b_intersect = true;
gernotbelger@9182: b_minuendAtIntersect = true;
sascha@1823: b_subtrahendAtIntersect = true;
gernotbelger@9182: }
gernotbelger@9182: } else {
sascha@1823: // compute common denominator
gernotbelger@9182: final double l_denominator = ((l_y4 - l_y3) * (l_x2 - l_x1)) - ((l_x4 - l_x3) * (l_y2 - l_y1));
sascha@1823:
sascha@1823: // compute common deltas
gernotbelger@9182: final double l_deltaY = l_y1 - l_y3;
gernotbelger@9182: final double l_deltaX = l_x1 - l_x3;
sascha@1823:
sascha@1823: // compute numerators
gernotbelger@9182: final double l_numeratorA = ((l_x4 - l_x3) * l_deltaY) - ((l_y4 - l_y3) * l_deltaX);
gernotbelger@9182: final double l_numeratorB = ((l_x2 - l_x1) * l_deltaY) - ((l_y2 - l_y1) * l_deltaX);
sascha@1823:
sascha@1823: // check if line segments are colinear
gernotbelger@9182: if ((0 == l_numeratorA) && (0 == l_numeratorB) && (0 == l_denominator)) {
sascha@1823: b_colinear = true;
gernotbelger@9182: } else {
sascha@1823: // check if previously colinear
sascha@1823: if (b_colinear) {
sascha@1823: // clear colinear points and flag
sascha@1823: l_minuendXs.clear();
sascha@1823: l_minuendYs.clear();
sascha@1823: l_subtrahendXs.clear();
sascha@1823: l_subtrahendYs.clear();
sascha@1823: l_polygonXs.clear();
sascha@1823: l_polygonYs.clear();
sascha@1823:
sascha@1823: b_colinear = false;
sascha@1823:
sascha@1823: // set new starting point for the polygon
gernotbelger@9182: final boolean b_useMinuend = ((l_x3 <= l_x1) && (l_x1 <= l_x4));
gernotbelger@9182: l_polygonXs.add(b_useMinuend ? l_minuendCurX : l_subtrahendCurX);
gernotbelger@9182: l_polygonYs.add(b_useMinuend ? l_minuendCurY : l_subtrahendCurY);
sascha@1823: }
sascha@1823:
sascha@1823: // compute slope components
gernotbelger@9182: final double l_slopeA = l_numeratorA / l_denominator;
gernotbelger@9182: final double l_slopeB = l_numeratorB / l_denominator;
sascha@1823:
sascha@1823: // check if the line segments intersect
gernotbelger@9182: if ((0 < l_slopeA) && (l_slopeA <= 1) && (0 < l_slopeB) && (l_slopeB <= 1)) {
sascha@1823: // compute the point of intersection
gernotbelger@9182: final double l_xi = l_x1 + (l_slopeA * (l_x2 - l_x1));
gernotbelger@9182: final double l_yi = l_y1 + (l_slopeA * (l_y2 - l_y1));
sascha@1823:
gernotbelger@9182: l_intersectX = new Double(l_xi);
gernotbelger@9182: l_intersectY = new Double(l_yi);
gernotbelger@9182: b_intersect = true;
gernotbelger@9182: b_minuendAtIntersect = ((l_xi == l_x2) && (l_yi == l_y2));
gernotbelger@9182: b_subtrahendAtIntersect = ((l_xi == l_x4) && (l_yi == l_y4));
sascha@1823:
sascha@1823: // advance minuend and subtrahend to intesect
gernotbelger@9182: l_minuendCurX = l_intersectX;
gernotbelger@9182: l_minuendCurY = l_intersectY;
sascha@1823: l_subtrahendCurX = l_intersectX;
sascha@1823: l_subtrahendCurY = l_intersectY;
sascha@1823: }
sascha@1823: }
sascha@1823: }
sascha@1823:
sascha@1823: if (b_intersect) {
sascha@1823: // create the polygon
sascha@1823: // add the minuend's points to polygon
sascha@1823: l_polygonXs.addAll(l_minuendXs);
sascha@1823: l_polygonYs.addAll(l_minuendYs);
sascha@1823:
sascha@1823: // add intersection point to the polygon
sascha@1823: l_polygonXs.add(l_intersectX);
sascha@1823: l_polygonYs.add(l_intersectY);
sascha@1823:
sascha@1823: // add the subtrahend's points to the polygon in reverse
sascha@1823: Collections.reverse(l_subtrahendXs);
sascha@1823: Collections.reverse(l_subtrahendYs);
sascha@1823: l_polygonXs.addAll(l_subtrahendXs);
sascha@1823: l_polygonYs.addAll(l_subtrahendYs);
sascha@1823:
sascha@1823: // create an actual polygon
gernotbelger@9182: b_positive = (l_subtrahendMaxY <= l_minuendMaxY) && (l_subtrahendMinY <= l_minuendMinY);
gernotbelger@9182: createPolygon(x_graphics, x_dataArea, x_plot, x_domainAxis, x_rangeAxis, b_positive, l_polygonXs, l_polygonYs);
sascha@1823:
sascha@1823: // clear the point vectors
sascha@1823: l_minuendXs.clear();
sascha@1823: l_minuendYs.clear();
sascha@1823: l_subtrahendXs.clear();
sascha@1823: l_subtrahendYs.clear();
sascha@1823: l_polygonXs.clear();
sascha@1823: l_polygonYs.clear();
sascha@1823:
sascha@1823: // set the maxY and minY values to intersect y-value
gernotbelger@9182: final double l_y = l_intersectY.doubleValue();
gernotbelger@9182: l_minuendMaxY = l_y;
sascha@1823: l_subtrahendMaxY = l_y;
gernotbelger@9182: l_minuendMinY = l_y;
sascha@1823: l_subtrahendMinY = l_y;
sascha@1823:
sascha@1823: // add interection point to new polygon
sascha@1823: l_polygonXs.add(l_intersectX);
sascha@1823: l_polygonYs.add(l_intersectY);
sascha@1823: }
sascha@1823:
sascha@1823: // advance the minuend if needed
sascha@1823: if (l_x2 <= l_x4) {
sascha@1823: l_minuendItem++;
sascha@1823: b_minuendAdvanced = true;
gernotbelger@9182: } else {
sascha@1823: b_minuendAdvanced = false;
sascha@1823: }
sascha@1823:
sascha@1823: // advance the subtrahend if needed
sascha@1823: if (l_x4 <= l_x2) {
sascha@1823: l_subtrahendItem++;
sascha@1823: b_subtrahendAdvanced = true;
gernotbelger@9182: } else {
sascha@1823: b_subtrahendAdvanced = false;
sascha@1823: }
sascha@1823:
gernotbelger@9182: b_minuendDone = (l_minuendItem == (l_minuendItemCount - 1));
gernotbelger@9182: b_subtrahendDone = (l_subtrahendItem == (l_subtrahendItemCount - 1));
sascha@1823: }
sascha@1823:
sascha@1823: // check if the final polygon needs to be clipped
sascha@1823: if (b_minuendDone && (l_x3 < l_x2) && (l_x2 < l_x4)) {
sascha@1823: // project onto subtrahend
gernotbelger@9182: final double l_slope = (l_y4 - l_y3) / (l_x4 - l_x3);
sascha@1823: l_subtrahendNextX = l_minuendNextX;
gernotbelger@9182: l_subtrahendNextY = new Double((l_slope * l_x2) + (l_y3 - (l_slope * l_x3)));
sascha@1823: }
sascha@1823:
sascha@1823: if (b_subtrahendDone && (l_x1 < l_x4) && (l_x4 < l_x2)) {
sascha@1823: // project onto minuend
gernotbelger@9182: final double l_slope = (l_y2 - l_y1) / (l_x2 - l_x1);
sascha@1823: l_minuendNextX = l_subtrahendNextX;
gernotbelger@9182: l_minuendNextY = new Double((l_slope * l_x4) + (l_y1 - (l_slope * l_x1)));
sascha@1823: }
sascha@1823:
sascha@1823: // consider last point of minuend and subtrahend for determining
sascha@1823: // positivity
gernotbelger@9182: l_minuendMaxY = Math.max(l_minuendMaxY, l_minuendNextY.doubleValue());
gernotbelger@9182: l_subtrahendMaxY = Math.max(l_subtrahendMaxY, l_subtrahendNextY.doubleValue());
gernotbelger@9182: l_minuendMinY = Math.min(l_minuendMinY, l_minuendNextY.doubleValue());
gernotbelger@9182: l_subtrahendMinY = Math.min(l_subtrahendMinY, l_subtrahendNextY.doubleValue());
sascha@1823:
sascha@1823: // add the last point of the minuned and subtrahend
sascha@1823: l_minuendXs.add(l_minuendNextX);
sascha@1823: l_minuendYs.add(l_minuendNextY);
sascha@1823: l_subtrahendXs.add(l_subtrahendNextX);
sascha@1823: l_subtrahendYs.add(l_subtrahendNextY);
sascha@1823:
sascha@1823: // create the polygon
sascha@1823: // add the minuend's points to polygon
sascha@1823: l_polygonXs.addAll(l_minuendXs);
sascha@1823: l_polygonYs.addAll(l_minuendYs);
sascha@1823:
sascha@1823: // add the subtrahend's points to the polygon in reverse
sascha@1823: Collections.reverse(l_subtrahendXs);
sascha@1823: Collections.reverse(l_subtrahendYs);
sascha@1823: l_polygonXs.addAll(l_subtrahendXs);
sascha@1823: l_polygonYs.addAll(l_subtrahendYs);
sascha@1823:
sascha@1823: // create an actual polygon
gernotbelger@9182: b_positive = (l_subtrahendMaxY <= l_minuendMaxY) && (l_subtrahendMinY <= l_minuendMinY);
gernotbelger@9182: createPolygon(x_graphics, x_dataArea, x_plot, x_domainAxis, x_rangeAxis, b_positive, l_polygonXs, l_polygonYs);
sascha@1823: }
sascha@1823:
sascha@1823: /**
gernotbelger@9182: * Draws the visual representation of a single data item, second pass. In
sascha@1823: * the second pass, the renderer draws the lines and shapes for the
sascha@1823: * individual points in the two series.
sascha@1823: *
gernotbelger@9182: * @param x_graphics
gernotbelger@9182: * the graphics device.
gernotbelger@9182: * @param x_dataArea
gernotbelger@9182: * the area within which the data is being drawn.
gernotbelger@9182: * @param x_info
gernotbelger@9182: * collects information about the drawing.
gernotbelger@9182: * @param x_plot
gernotbelger@9182: * the plot (can be used to obtain standard color
gernotbelger@9182: * information etc).
gernotbelger@9182: * @param x_domainAxis
gernotbelger@9182: * the domain (horizontal) axis.
gernotbelger@9182: * @param x_rangeAxis
gernotbelger@9182: * the range (vertical) axis.
gernotbelger@9182: * @param x_dataset
gernotbelger@9182: * the dataset.
gernotbelger@9182: * @param x_series
gernotbelger@9182: * the series index (zero-based).
gernotbelger@9182: * @param x_item
gernotbelger@9182: * the item index (zero-based).
gernotbelger@9182: * @param x_crosshairState
gernotbelger@9182: * crosshair information for the plot
gernotbelger@9182: * (null
permitted).
sascha@1823: */
gernotbelger@9182: private void drawItemPass1(final Graphics2D x_graphics, final Rectangle2D x_dataArea, final PlotRenderingInfo x_info, final XYPlot x_plot,
gernotbelger@9182: final ValueAxis x_domainAxis, final ValueAxis x_rangeAxis, final XYDataset x_dataset, final int x_series, final int x_item,
gernotbelger@9182: final CrosshairState x_crosshairState) {
sascha@1823:
sascha@1823: Shape l_entityArea = null;
sascha@1823: EntityCollection l_entities = null;
sascha@1823: if (null != x_info) {
sascha@1823: l_entities = x_info.getOwner().getEntityCollection();
sascha@1823: }
sascha@1823:
gernotbelger@9182: final Paint l_seriesPaint = getItemPaint(x_series, x_item);
gernotbelger@9182: final Stroke l_seriesStroke = getItemStroke(x_series, x_item);
sascha@1823: x_graphics.setPaint(l_seriesPaint);
sascha@1823: x_graphics.setStroke(l_seriesStroke);
sascha@1823:
gernotbelger@9182: final PlotOrientation l_orientation = x_plot.getOrientation();
gernotbelger@9182: final RectangleEdge l_domainAxisLocation = x_plot.getDomainAxisEdge();
gernotbelger@9182: final RectangleEdge l_rangeAxisLocation = x_plot.getRangeAxisEdge();
sascha@1823:
gernotbelger@9182: final double l_x0 = x_dataset.getXValue(x_series, x_item);
gernotbelger@9182: final double l_y0 = x_dataset.getYValue(x_series, x_item);
gernotbelger@9182: final double l_x1 = x_domainAxis.valueToJava2D(l_x0, x_dataArea, l_domainAxisLocation);
gernotbelger@9182: final double l_y1 = x_rangeAxis.valueToJava2D(l_y0, x_dataArea, l_rangeAxisLocation);
sascha@1823:
felix@2071: // These are the shapes of the series items.
sascha@1823: if (getShapesVisible()) {
sascha@1823: Shape l_shape = getItemShape(x_series, x_item);
sascha@1823: if (l_orientation == PlotOrientation.HORIZONTAL) {
gernotbelger@9182: l_shape = ShapeUtilities.createTranslatedShape(l_shape, l_y1, l_x1);
gernotbelger@9182: } else {
gernotbelger@9182: l_shape = ShapeUtilities.createTranslatedShape(l_shape, l_x1, l_y1);
sascha@1823: }
sascha@1823: if (l_shape.intersects(x_dataArea)) {
sascha@1823: x_graphics.setPaint(getItemPaint(x_series, x_item));
sascha@1823: x_graphics.fill(l_shape);
gernotbelger@9182: /*
gernotbelger@9182: * TODO We could draw the shapes of single items here.
gernotbelger@9182: * if (drawOutline) {
gernotbelger@9182: * x_graphics.setPaint(this.outlinePaint);
gernotbelger@9182: * x_graphics.setStroke(this.outlineStroke);
gernotbelger@9182: * x_graphics.draw(l_shape);
gernotbelger@9182: * }
gernotbelger@9182: */
sascha@1823: }
sascha@1823: l_entityArea = l_shape;
felix@2071: } // if (getShapesVisible())
sascha@1823:
sascha@1823: // add an entity for the item...
sascha@1823: if (null != l_entities) {
sascha@1823: if (null == l_entityArea) {
gernotbelger@9182: l_entityArea = new Rectangle2D.Double((l_x1 - 2), (l_y1 - 2), 4, 4);
sascha@1823: }
sascha@1823: String l_tip = null;
gernotbelger@9182: final XYToolTipGenerator l_tipGenerator = getToolTipGenerator(x_series, x_item);
sascha@1823: if (null != l_tipGenerator) {
gernotbelger@9182: l_tip = l_tipGenerator.generateToolTip(x_dataset, x_series, x_item);
sascha@1823: }
sascha@1823: String l_url = null;
gernotbelger@9182: final XYURLGenerator l_urlGenerator = getURLGenerator();
sascha@1823: if (null != l_urlGenerator) {
gernotbelger@9182: l_url = l_urlGenerator.generateURL(x_dataset, x_series, x_item);
sascha@1823: }
gernotbelger@9182: final XYItemEntity l_entity = new XYItemEntity(l_entityArea, x_dataset, x_series, x_item, l_tip, l_url);
sascha@1823: l_entities.add(l_entity);
sascha@1823: }
sascha@1823:
sascha@1823: // draw the item label if there is one...
sascha@1823: if (isItemLabelVisible(x_series, x_item)) {
gernotbelger@9182: drawItemLabel(x_graphics, l_orientation, x_dataset, x_series, x_item, l_x1, l_y1, (l_y1 < 0.0));
sascha@1823: }
sascha@1823:
gernotbelger@9182: final int l_domainAxisIndex = x_plot.getDomainAxisIndex(x_domainAxis);
gernotbelger@9182: final int l_rangeAxisIndex = x_plot.getRangeAxisIndex(x_rangeAxis);
gernotbelger@9182: updateCrosshairValues(x_crosshairState, l_x0, l_y0, l_domainAxisIndex, l_rangeAxisIndex, l_x1, l_y1, l_orientation);
sascha@1823:
sascha@1823: if (0 == x_item) {
sascha@1823: return;
sascha@1823: }
sascha@1823:
gernotbelger@9182: final double l_x2 = x_domainAxis.valueToJava2D(x_dataset.getXValue(x_series, (x_item - 1)), x_dataArea, l_domainAxisLocation);
gernotbelger@9182: final double l_y2 = x_rangeAxis.valueToJava2D(x_dataset.getYValue(x_series, (x_item - 1)), x_dataArea, l_rangeAxisLocation);
sascha@1823:
sascha@1823: Line2D l_line = null;
sascha@1823: if (PlotOrientation.HORIZONTAL == l_orientation) {
sascha@1823: l_line = new Line2D.Double(l_y1, l_x1, l_y2, l_x2);
gernotbelger@9182: } else if (PlotOrientation.VERTICAL == l_orientation) {
sascha@1823: l_line = new Line2D.Double(l_x1, l_y1, l_x2, l_y2);
sascha@1823: }
sascha@1823:
sascha@1823: if ((null != l_line) && l_line.intersects(x_dataArea)) {
sascha@1823: x_graphics.setPaint(getItemPaint(x_series, x_item));
sascha@1823: x_graphics.setStroke(getItemStroke(x_series, x_item));
gernotbelger@9182: if (this.drawOriginalSeries) {
felix@2071: x_graphics.setPaint(this.outlinePaint);
felix@2071: x_graphics.setStroke(this.outlineStroke);
felix@2071: x_graphics.draw(l_line);
felix@2071: }
sascha@1823: }
sascha@1823: }
sascha@1823:
sascha@1823: /**
gernotbelger@9182: * Determines if a dataset is degenerate. A degenerate dataset is a
sascha@1823: * dataset where either series has less than two (2) points.
sascha@1823: *
gernotbelger@9182: * @param x_dataset
gernotbelger@9182: * the dataset.
gernotbelger@9182: * @param x_impliedZeroSubtrahend
gernotbelger@9182: * if false, do not check the subtrahend
sascha@1823: *
sascha@1823: * @return true if the dataset is degenerate.
sascha@1823: */
gernotbelger@9182: private boolean isEitherSeriesDegenerate(final XYDataset x_dataset, final boolean x_impliedZeroSubtrahend) {
sascha@1823:
sascha@1823: if (x_impliedZeroSubtrahend) {
sascha@1823: return (x_dataset.getItemCount(0) < 2);
sascha@1823: }
sascha@1823:
gernotbelger@9182: return ((x_dataset.getItemCount(0) < 2) || (x_dataset.getItemCount(1) < 2));
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Determines if the two (2) series are disjoint.
sascha@1823: * Disjoint series do not overlap in the domain space.
sascha@1823: *
gernotbelger@9182: * @param x_dataset
gernotbelger@9182: * the dataset.
sascha@1823: *
sascha@1823: * @return true if the dataset is degenerate.
sascha@1823: */
gernotbelger@9182: private boolean areSeriesDisjoint(final XYDataset x_dataset) {
sascha@1823:
gernotbelger@9182: final int l_minuendItemCount = x_dataset.getItemCount(0);
gernotbelger@9182: final double l_minuendFirst = x_dataset.getXValue(0, 0);
gernotbelger@9182: final double l_minuendLast = x_dataset.getXValue(0, l_minuendItemCount - 1);
sascha@1823:
gernotbelger@9182: final int l_subtrahendItemCount = x_dataset.getItemCount(1);
gernotbelger@9182: final double l_subtrahendFirst = x_dataset.getXValue(1, 0);
gernotbelger@9182: final double l_subtrahendLast = x_dataset.getXValue(1, l_subtrahendItemCount - 1);
gernotbelger@9182:
gernotbelger@9182: return ((l_minuendLast < l_subtrahendFirst) || (l_subtrahendLast < l_minuendFirst));
sascha@1823: }
sascha@1823:
gernotbelger@9182: private void updateCentroid(final Object[] xValues, final Object[] yValues) {
felix@2667: double x = 0d, y = 0d;
felix@2667:
felix@2667: for (int i = 0, N = xValues.length; i < N; ++i) {
gernotbelger@9182: x += ((Double) xValues[i]).doubleValue();
gernotbelger@9182: y += ((Double) yValues[i]).doubleValue();
felix@2667: }
felix@2667:
felix@2667: x /= xValues.length;
felix@2667: y /= yValues.length;
felix@2667:
gernotbelger@9182: this.centroidNPoints++;
gernotbelger@9182: final double factorNew = 1d / this.centroidNPoints;
gernotbelger@9182: final double factorOld = 1d - factorNew;
felix@2667:
gernotbelger@9182: this.centroid = new Point2D.Double((factorNew * x + factorOld * this.centroid.x), (factorNew * y + factorOld * this.centroid.y));
felix@2667: }
felix@2667:
gernotbelger@9182: private static double calculateArea(final Object[] xValues, final Object[] yValues) {
sascha@2108: double area = 0d;
sascha@2108:
sascha@2108: for (int i = 0, N = xValues.length; i < N; ++i) {
gernotbelger@9182: final int k = (i + 1) % N;
gernotbelger@9182: final double xi = ((Double) xValues[i]).doubleValue();
gernotbelger@9182: final double yi = ((Double) yValues[i]).doubleValue();
gernotbelger@9182: final double xk = ((Double) xValues[k]).doubleValue();
gernotbelger@9182: final double yk = ((Double) yValues[k]).doubleValue();
sascha@2108:
gernotbelger@9182: area += xi * yk;
gernotbelger@9182: area -= xk * yi;
felix@2667: // TODO centroid calculation here?
sascha@2108: }
sascha@2108:
gernotbelger@9182: return 0.5d * area;
sascha@2108: }
sascha@2108:
sascha@1823: /**
sascha@1823: * Draws the visual representation of a polygon
sascha@1823: *
gernotbelger@9182: * @param x_graphics
gernotbelger@9182: * the graphics device.
gernotbelger@9182: * @param x_dataArea
gernotbelger@9182: * the area within which the data is being drawn.
gernotbelger@9182: * @param x_plot
gernotbelger@9182: * the plot (can be used to obtain standard color
gernotbelger@9182: * information etc).
gernotbelger@9182: * @param x_domainAxis
gernotbelger@9182: * the domain (horizontal) axis.
gernotbelger@9182: * @param x_rangeAxis
gernotbelger@9182: * the range (vertical) axis.
gernotbelger@9182: * @param x_positive
gernotbelger@9182: * indicates if the polygon is positive (true) or
gernotbelger@9182: * negative (false).
gernotbelger@9182: * @param x_xValues
gernotbelger@9182: * a linked list of the x values (expects values to be
gernotbelger@9182: * of type Double).
gernotbelger@9182: * @param x_yValues
gernotbelger@9182: * a linked list of the y values (expects values to be
gernotbelger@9182: * of type Double).
sascha@1823: */
gernotbelger@9182: private void createPolygon(final Graphics2D x_graphics, final Rectangle2D x_dataArea, final XYPlot x_plot, final ValueAxis x_domainAxis,
gernotbelger@9182: final ValueAxis x_rangeAxis, final boolean x_positive, final List x_xValues, final List x_yValues) {
sascha@1823:
gernotbelger@9182: final PlotOrientation l_orientation = x_plot.getOrientation();
gernotbelger@9182: final RectangleEdge l_domainAxisLocation = x_plot.getDomainAxisEdge();
gernotbelger@9182: final RectangleEdge l_rangeAxisLocation = x_plot.getRangeAxisEdge();
sascha@1823:
gernotbelger@9182: final Object[] l_xValues = x_xValues.toArray();
gernotbelger@9182: final Object[] l_yValues = x_yValues.toArray();
sascha@1823:
gernotbelger@9182: final double area = calculateArea(l_xValues, l_yValues);
gernotbelger@9182: if (x_positive)
gernotbelger@9182: this.positiveArea += area;
gernotbelger@9182: else
gernotbelger@9182: this.negativeArea += area;
felix@2667: updateCentroid(l_xValues, l_yValues);
sascha@2108:
gernotbelger@9182: final GeneralPath l_path = new GeneralPath();
sascha@1823:
sascha@1823: if (PlotOrientation.VERTICAL == l_orientation) {
gernotbelger@9182: double l_x = x_domainAxis.valueToJava2D(((Double) l_xValues[0]).doubleValue(), x_dataArea, l_domainAxisLocation);
sascha@1823: if (this.roundXCoordinates) {
sascha@1823: l_x = Math.rint(l_x);
sascha@1823: }
sascha@1823:
gernotbelger@9182: double l_y = x_rangeAxis.valueToJava2D(((Double) l_yValues[0]).doubleValue(), x_dataArea, l_rangeAxisLocation);
sascha@1823:
sascha@1823: l_path.moveTo((float) l_x, (float) l_y);
sascha@1823: for (int i = 1; i < l_xValues.length; i++) {
gernotbelger@9182: l_x = x_domainAxis.valueToJava2D(((Double) l_xValues[i]).doubleValue(), x_dataArea, l_domainAxisLocation);
sascha@1823: if (this.roundXCoordinates) {
sascha@1823: l_x = Math.rint(l_x);
sascha@1823: }
sascha@1823:
gernotbelger@9182: l_y = x_rangeAxis.valueToJava2D(((Double) l_yValues[i]).doubleValue(), x_dataArea, l_rangeAxisLocation);
sascha@1823: l_path.lineTo((float) l_x, (float) l_y);
sascha@1823: }
sascha@1823: l_path.closePath();
gernotbelger@9182: } else {
gernotbelger@9182: double l_x = x_domainAxis.valueToJava2D(((Double) l_xValues[0]).doubleValue(), x_dataArea, l_domainAxisLocation);
sascha@1823: if (this.roundXCoordinates) {
sascha@1823: l_x = Math.rint(l_x);
sascha@1823: }
sascha@1823:
gernotbelger@9182: double l_y = x_rangeAxis.valueToJava2D(((Double) l_yValues[0]).doubleValue(), x_dataArea, l_rangeAxisLocation);
sascha@1823:
sascha@1823: l_path.moveTo((float) l_y, (float) l_x);
sascha@1823: for (int i = 1; i < l_xValues.length; i++) {
gernotbelger@9182: l_x = x_domainAxis.valueToJava2D(((Double) l_xValues[i]).doubleValue(), x_dataArea, l_domainAxisLocation);
sascha@1823: if (this.roundXCoordinates) {
sascha@1823: l_x = Math.rint(l_x);
sascha@1823: }
sascha@1823:
gernotbelger@9182: l_y = x_rangeAxis.valueToJava2D(((Double) l_yValues[i]).doubleValue(), x_dataArea, l_rangeAxisLocation);
sascha@1823: l_path.lineTo((float) l_y, (float) l_x);
sascha@1823: }
sascha@1823: l_path.closePath();
sascha@1823: }
sascha@1823:
sascha@1823: if (l_path.intersects(x_dataArea)) {
gernotbelger@9182:
gernotbelger@9182: final Paint paint = x_positive ? getPositivePaint() : getNegativePaint();
gernotbelger@9182: if (this.drawArea && paint != null) {
gernotbelger@9182: x_graphics.setPaint(paint);
gernotbelger@9182: x_graphics.fill(l_path);
gernotbelger@8910: }
gernotbelger@9182:
gernotbelger@9182: if (this.drawOutline) {
felix@2071: x_graphics.setStroke(this.outlineStroke);
felix@2071: x_graphics.setPaint(this.outlinePaint);
felix@2071: x_graphics.draw(l_path);
felix@2071: }
sascha@1823: }
sascha@1823: }
sascha@1823:
sascha@1823: /**
gernotbelger@9182: * Returns a default legend item for the specified series. Subclasses
sascha@1823: * should override this method to generate customised items.
sascha@1823: *
gernotbelger@9182: * @param datasetIndex
gernotbelger@9182: * the dataset index (zero-based).
gernotbelger@9182: * @param series
gernotbelger@9182: * the series index (zero-based).
sascha@1823: *
sascha@1823: * @return A legend item for the series.
sascha@1823: */
gernotbelger@9182: @Override
gernotbelger@9182: public LegendItem getLegendItem(final int datasetIndex, final int series) {
gernotbelger@9182: final XYPlot p = getPlot();
gernotbelger@9182: if (p == null)
gernotbelger@9182: return null;
felix@2021:
gernotbelger@9182: final XYDataset dataset = p.getDataset(datasetIndex);
gernotbelger@9182: if (dataset == null)
gernotbelger@9182: return null;
felix@2071:
gernotbelger@9182: if (!getItemVisible(series, 0))
gernotbelger@9182: return null;
sascha@1823:
gernotbelger@9182: final String label = getLegendItemLabelGenerator().generateLabel(dataset, series);
gernotbelger@9182: final String description = label;
gernotbelger@9182: String toolTipText = null;
gernotbelger@9182: if (getLegendItemToolTipGenerator() != null) {
gernotbelger@9182: toolTipText = getLegendItemToolTipGenerator().generateLabel(dataset, series);
sascha@1823: }
gernotbelger@9182: String urlText = null;
gernotbelger@9182: if (getLegendItemURLGenerator() != null) {
gernotbelger@9182: urlText = getLegendItemURLGenerator().generateLabel(dataset, series);
gernotbelger@9182: }
gernotbelger@9182:
gernotbelger@9182: // "Area-Style"- Paint.
gernotbelger@9182: final Paint paint = getPositivePaint();
gernotbelger@9182: final Shape line = getLegendLine();
gernotbelger@9182:
gernotbelger@9182: // Filled Shape ("Area-Style").
gernotbelger@9182: final BasicStroke NULL_STROKE = new BasicStroke(0.0f);
gernotbelger@9182: final Shape NULL_SHAPE = new Line2D.Float();
gernotbelger@9182:
gernotbelger@9182: final Paint outlPaint = this.drawOutline ? this.outlinePaint : Color.black;
gernotbelger@9182: final Stroke outlStroke = this.drawOutline ? this.outlineStroke : NULL_STROKE;
gernotbelger@9182:
gernotbelger@9182: final LegendItem result = new LegendItem(label, description, toolTipText, urlText, true, line, this.drawArea, paint, this.drawOutline, outlPaint,
gernotbelger@9182: outlStroke, false, NULL_SHAPE, NULL_STROKE, Color.black);
gernotbelger@9182:
gernotbelger@9182: result.setLabelFont(lookupLegendTextFont(series));
gernotbelger@9182: final Paint labelPaint = lookupLegendTextPaint(series);
gernotbelger@9182: if (labelPaint != null)
gernotbelger@9182: result.setLabelPaint(labelPaint);
gernotbelger@9182: result.setDataset(dataset);
gernotbelger@9182: result.setDatasetIndex(datasetIndex);
gernotbelger@9182: result.setSeriesKey(dataset.getSeriesKey(series));
gernotbelger@9182: result.setSeriesIndex(series);
sascha@1823:
sascha@1823: return result;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Tests this renderer for equality with an arbitrary object.
sascha@1823: *
gernotbelger@9182: * @param obj
gernotbelger@9182: * the object (null
permitted).
sascha@1823: *
sascha@1823: * @return A boolean.
sascha@1823: */
gernotbelger@9182: @Override
gernotbelger@9182: public boolean equals(final Object obj) {
sascha@1823: if (obj == this) {
sascha@1823: return true;
sascha@1823: }
sascha@1823: if (!(obj instanceof StableXYDifferenceRenderer)) {
sascha@1823: return false;
sascha@1823: }
sascha@1823: if (!super.equals(obj)) {
sascha@1823: return false;
sascha@1823: }
gernotbelger@9182: final StableXYDifferenceRenderer that = (StableXYDifferenceRenderer) obj;
sascha@1823: if (!PaintUtilities.equal(this.positivePaint, that.positivePaint)) {
sascha@1823: return false;
sascha@1823: }
sascha@1823: if (!PaintUtilities.equal(this.negativePaint, that.negativePaint)) {
sascha@1823: return false;
sascha@1823: }
sascha@1823: if (this.shapesVisible != that.shapesVisible) {
sascha@1823: return false;
sascha@1823: }
felix@2021: if (!ShapeUtilities.equal(this.legendShape, that.legendShape)) {
sascha@1823: return false;
sascha@1823: }
sascha@1823: if (this.roundXCoordinates != that.roundXCoordinates) {
sascha@1823: return false;
sascha@1823: }
sascha@1823: return true;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Returns a clone of the renderer.
sascha@1823: *
sascha@1823: * @return A clone.
sascha@1823: *
gernotbelger@9182: * @throws CloneNotSupportedException
gernotbelger@9182: * if the renderer cannot be cloned.
sascha@1823: */
gernotbelger@9182: @Override
sascha@1823: public Object clone() throws CloneNotSupportedException {
gernotbelger@9182: final StableXYDifferenceRenderer clone = (StableXYDifferenceRenderer) super.clone();
felix@2021: clone.legendShape = ShapeUtilities.clone(this.legendShape);
sascha@1823: return clone;
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Provides serialization support.
sascha@1823: *
gernotbelger@9182: * @param stream
gernotbelger@9182: * the output stream.
sascha@1823: *
gernotbelger@9182: * @throws IOException
gernotbelger@9182: * if there is an I/O error.
sascha@1823: */
gernotbelger@9182: private void writeObject(final ObjectOutputStream stream) throws IOException {
sascha@1823: stream.defaultWriteObject();
sascha@1823: SerialUtilities.writePaint(this.positivePaint, stream);
sascha@1823: SerialUtilities.writePaint(this.negativePaint, stream);
felix@2021: SerialUtilities.writeShape(this.legendShape, stream);
sascha@1823: }
sascha@1823:
sascha@1823: /**
sascha@1823: * Provides serialization support.
sascha@1823: *
gernotbelger@9182: * @param stream
gernotbelger@9182: * the input stream.
sascha@1823: *
gernotbelger@9182: * @throws IOException
gernotbelger@9182: * if there is an I/O error.
gernotbelger@9182: * @throws ClassNotFoundException
gernotbelger@9182: * if there is a classpath problem.
sascha@1823: */
gernotbelger@9182: private void readObject(final ObjectInputStream stream) throws IOException, ClassNotFoundException {
sascha@1823: stream.defaultReadObject();
sascha@1823: this.positivePaint = SerialUtilities.readPaint(stream);
sascha@1823: this.negativePaint = SerialUtilities.readPaint(stream);
felix@2021: this.legendShape = SerialUtilities.readShape(stream);
sascha@1823: }
gernotbelger@9182: }