FastScatterPlot.java
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2022, by David Gilbert and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* --------------------
* FastScatterPlot.java
* --------------------
* (C) Copyright 2002-2022, by David Gilbert.
*
* Original Author: David Gilbert;
* Contributor(s): Arnaud Lelievre;
* Ulrich Voigt (patch #307);
*
*/
package org.jfree.chart.plot;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.List;
import java.util.Objects;
import java.util.ResourceBundle;
import org.jfree.chart.ChartElementVisitor;
import org.jfree.chart.axis.AxisSpace;
import org.jfree.chart.axis.AxisState;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.axis.ValueTick;
import org.jfree.chart.event.PlotChangeEvent;
import org.jfree.chart.api.RectangleEdge;
import org.jfree.chart.api.RectangleInsets;
import org.jfree.chart.internal.ArrayUtils;
import org.jfree.chart.internal.PaintUtils;
import org.jfree.chart.internal.Args;
import org.jfree.chart.internal.SerialUtils;
import org.jfree.data.Range;
/**
* A fast scatter plot.
*/
public class FastScatterPlot extends Plot implements ValueAxisPlot, Pannable,
Zoomable, Cloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 7871545897358563521L;
/** The default grid line stroke. */
public static final Stroke DEFAULT_GRIDLINE_STROKE = new BasicStroke(0.5f,
BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 0.0f, new float[]
{2.0f, 2.0f}, 0.0f);
/** The default grid line paint. */
public static final Paint DEFAULT_GRIDLINE_PAINT = Color.lightGray;
/** The data. */
private float[][] data;
/** The x data range. */
private final Range xDataRange;
/** The y data range. */
private final Range yDataRange;
/** The domain axis (used for the x-values). */
private ValueAxis domainAxis;
/** The range axis (used for the y-values). */
private ValueAxis rangeAxis;
/** The paint used to plot data points. */
private transient Paint paint;
/** A flag that controls whether the domain grid-lines are visible. */
private boolean domainGridlinesVisible;
/** The stroke used to draw the domain grid-lines. */
private transient Stroke domainGridlineStroke;
/** The paint used to draw the domain grid-lines. */
private transient Paint domainGridlinePaint;
/** A flag that controls whether the range grid-lines are visible. */
private boolean rangeGridlinesVisible;
/** The stroke used to draw the range grid-lines. */
private transient Stroke rangeGridlineStroke;
/** The paint used to draw the range grid-lines. */
private transient Paint rangeGridlinePaint;
/**
* A flag that controls whether or not panning is enabled for the domain
* axis.
*/
private boolean domainPannable;
/**
* A flag that controls whether or not panning is enabled for the range
* axis.
*/
private boolean rangePannable;
/** The resourceBundle for the localization. */
protected static ResourceBundle localizationResources
= ResourceBundle.getBundle("org.jfree.chart.plot.LocalizationBundle");
/**
* Creates a new instance of {@code FastScatterPlot} with default
* axes.
*/
public FastScatterPlot() {
this(null, new NumberAxis("X"), new NumberAxis("Y"));
}
/**
* Creates a new fast scatter plot.
* <p>
* The data is an array of x, y values: data[0][i] = x, data[1][i] = y.
*
* @param data the data ({@code null} permitted).
* @param domainAxis the domain (x) axis ({@code null} not permitted).
* @param rangeAxis the range (y) axis ({@code null} not permitted).
*/
public FastScatterPlot(float[][] data,
ValueAxis domainAxis, ValueAxis rangeAxis) {
super();
Args.nullNotPermitted(domainAxis, "domainAxis");
Args.nullNotPermitted(rangeAxis, "rangeAxis");
this.data = data;
this.xDataRange = calculateXDataRange(data);
this.yDataRange = calculateYDataRange(data);
this.domainAxis = domainAxis;
this.domainAxis.setPlot(this);
this.domainAxis.addChangeListener(this);
this.rangeAxis = rangeAxis;
this.rangeAxis.setPlot(this);
this.rangeAxis.addChangeListener(this);
this.paint = Color.RED;
this.domainGridlinesVisible = true;
this.domainGridlinePaint = FastScatterPlot.DEFAULT_GRIDLINE_PAINT;
this.domainGridlineStroke = FastScatterPlot.DEFAULT_GRIDLINE_STROKE;
this.rangeGridlinesVisible = true;
this.rangeGridlinePaint = FastScatterPlot.DEFAULT_GRIDLINE_PAINT;
this.rangeGridlineStroke = FastScatterPlot.DEFAULT_GRIDLINE_STROKE;
}
/**
* Returns a short string describing the plot type.
*
* @return A short string describing the plot type.
*/
@Override
public String getPlotType() {
return localizationResources.getString("Fast_Scatter_Plot");
}
/**
* Returns the data array used by the plot.
*
* @return The data array (possibly {@code null}).
*
* @see #setData(float[][])
*/
public float[][] getData() {
return this.data;
}
/**
* Sets the data array used by the plot and sends a {@link PlotChangeEvent}
* to all registered listeners.
*
* @param data the data array ({@code null} permitted).
*
* @see #getData()
*/
public void setData(float[][] data) {
this.data = data;
fireChangeEvent();
}
/**
* Returns the orientation of the plot.
*
* @return The orientation (always {@link PlotOrientation#VERTICAL}).
*/
@Override
public PlotOrientation getOrientation() {
return PlotOrientation.VERTICAL;
}
/**
* Returns the domain axis for the plot.
*
* @return The domain axis (never {@code null}).
*
* @see #setDomainAxis(ValueAxis)
*/
public ValueAxis getDomainAxis() {
return this.domainAxis;
}
/**
* Sets the domain axis and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param axis the axis ({@code null} not permitted).
*
* @see #getDomainAxis()
*/
public void setDomainAxis(ValueAxis axis) {
Args.nullNotPermitted(axis, "axis");
this.domainAxis = axis;
fireChangeEvent();
}
/**
* Returns the range axis for the plot.
*
* @return The range axis (never {@code null}).
*
* @see #setRangeAxis(ValueAxis)
*/
public ValueAxis getRangeAxis() {
return this.rangeAxis;
}
/**
* Sets the range axis and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param axis the axis ({@code null} not permitted).
*
* @see #getRangeAxis()
*/
public void setRangeAxis(ValueAxis axis) {
Args.nullNotPermitted(axis, "axis");
this.rangeAxis = axis;
fireChangeEvent();
}
/**
* Returns the paint used to plot data points. The default is
* {@code Color.RED}.
*
* @return The paint.
*
* @see #setPaint(Paint)
*/
public Paint getPaint() {
return this.paint;
}
/**
* Sets the color for the data points and sends a {@link PlotChangeEvent}
* to all registered listeners.
*
* @param paint the paint ({@code null} not permitted).
*
* @see #getPaint()
*/
public void setPaint(Paint paint) {
Args.nullNotPermitted(paint, "paint");
this.paint = paint;
fireChangeEvent();
}
/**
* Returns {@code true} if the domain gridlines are visible, and
* {@code false} otherwise.
*
* @return {@code true} or {@code false}.
*
* @see #setDomainGridlinesVisible(boolean)
* @see #setDomainGridlinePaint(Paint)
*/
public boolean isDomainGridlinesVisible() {
return this.domainGridlinesVisible;
}
/**
* Sets the flag that controls whether or not the domain grid-lines are
* visible. If the flag value is changed, a {@link PlotChangeEvent} is
* sent to all registered listeners.
*
* @param visible the new value of the flag.
*
* @see #getDomainGridlinePaint()
*/
public void setDomainGridlinesVisible(boolean visible) {
if (this.domainGridlinesVisible != visible) {
this.domainGridlinesVisible = visible;
fireChangeEvent();
}
}
/**
* Returns the stroke for the grid-lines (if any) plotted against the
* domain axis.
*
* @return The stroke (never {@code null}).
*
* @see #setDomainGridlineStroke(Stroke)
*/
public Stroke getDomainGridlineStroke() {
return this.domainGridlineStroke;
}
/**
* Sets the stroke for the grid lines plotted against the domain axis and
* sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param stroke the stroke ({@code null} not permitted).
*
* @see #getDomainGridlineStroke()
*/
public void setDomainGridlineStroke(Stroke stroke) {
Args.nullNotPermitted(stroke, "stroke");
this.domainGridlineStroke = stroke;
fireChangeEvent();
}
/**
* Returns the paint for the grid lines (if any) plotted against the domain
* axis.
*
* @return The paint (never {@code null}).
*
* @see #setDomainGridlinePaint(Paint)
*/
public Paint getDomainGridlinePaint() {
return this.domainGridlinePaint;
}
/**
* Sets the paint for the grid lines plotted against the domain axis and
* sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param paint the paint ({@code null} not permitted).
*
* @see #getDomainGridlinePaint()
*/
public void setDomainGridlinePaint(Paint paint) {
Args.nullNotPermitted(paint, "paint");
this.domainGridlinePaint = paint;
fireChangeEvent();
}
/**
* Returns {@code true} if the range axis grid is visible, and
* {@code false} otherwise.
*
* @return {@code true} or {@code false}.
*
* @see #setRangeGridlinesVisible(boolean)
*/
public boolean isRangeGridlinesVisible() {
return this.rangeGridlinesVisible;
}
/**
* Sets the flag that controls whether or not the range axis grid lines are
* visible. If the flag value is changed, a {@link PlotChangeEvent} is
* sent to all registered listeners.
*
* @param visible the new value of the flag.
*
* @see #isRangeGridlinesVisible()
*/
public void setRangeGridlinesVisible(boolean visible) {
if (this.rangeGridlinesVisible != visible) {
this.rangeGridlinesVisible = visible;
fireChangeEvent();
}
}
/**
* Returns the stroke for the grid lines (if any) plotted against the range
* axis.
*
* @return The stroke (never {@code null}).
*
* @see #setRangeGridlineStroke(Stroke)
*/
public Stroke getRangeGridlineStroke() {
return this.rangeGridlineStroke;
}
/**
* Sets the stroke for the grid lines plotted against the range axis and
* sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param stroke the stroke ({@code null} permitted).
*
* @see #getRangeGridlineStroke()
*/
public void setRangeGridlineStroke(Stroke stroke) {
Args.nullNotPermitted(stroke, "stroke");
this.rangeGridlineStroke = stroke;
fireChangeEvent();
}
/**
* Returns the paint for the grid lines (if any) plotted against the range
* axis.
*
* @return The paint (never {@code null}).
*
* @see #setRangeGridlinePaint(Paint)
*/
public Paint getRangeGridlinePaint() {
return this.rangeGridlinePaint;
}
/**
* Sets the paint for the grid lines plotted against the range axis and
* sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param paint the paint ({@code null} not permitted).
*
* @see #getRangeGridlinePaint()
*/
public void setRangeGridlinePaint(Paint paint) {
Args.nullNotPermitted(paint, "paint");
this.rangeGridlinePaint = paint;
fireChangeEvent();
}
/**
* Receives a chart element visitor.
*
* @param visitor the visitor ({@code null} not permitted).
*/
@Override
public void receive(ChartElementVisitor visitor) {
this.domainAxis.receive(visitor);
this.rangeAxis.receive(visitor);
super.receive(visitor);
}
/**
* Draws the fast scatter plot on a Java 2D graphics device (such as the
* screen or a printer).
*
* @param g2 the graphics device.
* @param area the area within which the plot (including axis labels)
* should be drawn.
* @param anchor the anchor point ({@code null} permitted).
* @param parentState the state from the parent plot (ignored).
* @param info collects chart drawing information ({@code null}
* permitted).
*/
@Override
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
PlotState parentState, PlotRenderingInfo info) {
// set up info collection...
if (info != null) {
info.setPlotArea(area);
}
// adjust the drawing area for plot insets (if any)...
RectangleInsets insets = getInsets();
insets.trim(area);
AxisSpace space = new AxisSpace();
space = this.domainAxis.reserveSpace(g2, this, area,
RectangleEdge.BOTTOM, space);
space = this.rangeAxis.reserveSpace(g2, this, area, RectangleEdge.LEFT,
space);
Rectangle2D dataArea = space.shrink(area, null);
if (info != null) {
info.setDataArea(dataArea);
}
// draw the plot background and axes...
drawBackground(g2, dataArea);
AxisState domainAxisState = this.domainAxis.draw(g2,
dataArea.getMaxY(), area, dataArea, RectangleEdge.BOTTOM, info);
AxisState rangeAxisState = this.rangeAxis.draw(g2, dataArea.getMinX(),
area, dataArea, RectangleEdge.LEFT, info);
drawDomainGridlines(g2, dataArea, domainAxisState.getTicks());
drawRangeGridlines(g2, dataArea, rangeAxisState.getTicks());
Shape originalClip = g2.getClip();
Composite originalComposite = g2.getComposite();
g2.clip(dataArea);
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
getForegroundAlpha()));
render(g2, dataArea, info, null);
g2.setClip(originalClip);
g2.setComposite(originalComposite);
drawOutline(g2, dataArea);
}
/**
* Draws a representation of the data within the dataArea region. The
* {@code info} and {@code crosshairState} arguments may be
* {@code null}.
*
* @param g2 the graphics device.
* @param dataArea the region in which the data is to be drawn.
* @param info an optional object for collection dimension information.
* @param crosshairState collects crosshair information ({@code null}
* permitted).
*/
public void render(Graphics2D g2, Rectangle2D dataArea,
PlotRenderingInfo info, CrosshairState crosshairState) {
g2.setPaint(this.paint);
// if the axes use a linear scale, you can uncomment the code below and
// switch to the alternative transX/transY calculation inside the loop
// that follows - it is a little bit faster then.
//
// int xx = (int) dataArea.getMinX();
// int ww = (int) dataArea.getWidth();
// int yy = (int) dataArea.getMaxY();
// int hh = (int) dataArea.getHeight();
// double domainMin = this.domainAxis.getLowerBound();
// double domainLength = this.domainAxis.getUpperBound() - domainMin;
// double rangeMin = this.rangeAxis.getLowerBound();
// double rangeLength = this.rangeAxis.getUpperBound() - rangeMin;
if (this.data != null) {
for (int i = 0; i < this.data[0].length; i++) {
float x = this.data[0][i];
float y = this.data[1][i];
//int transX = (int) (xx + ww * (x - domainMin) / domainLength);
//int transY = (int) (yy - hh * (y - rangeMin) / rangeLength);
int transX = (int) this.domainAxis.valueToJava2D(x, dataArea,
RectangleEdge.BOTTOM);
int transY = (int) this.rangeAxis.valueToJava2D(y, dataArea,
RectangleEdge.LEFT);
g2.fillRect(transX, transY, 1, 1);
}
}
}
/**
* Draws the gridlines for the plot, if they are visible.
*
* @param g2 the graphics device.
* @param dataArea the data area.
* @param ticks the ticks.
*/
protected void drawDomainGridlines(Graphics2D g2, Rectangle2D dataArea,
List ticks) {
if (!isDomainGridlinesVisible()) {
return;
}
Object saved = g2.getRenderingHint(RenderingHints.KEY_STROKE_CONTROL);
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
RenderingHints.VALUE_STROKE_NORMALIZE);
for (Object o : ticks) {
ValueTick tick = (ValueTick) o;
double v = this.domainAxis.valueToJava2D(tick.getValue(),
dataArea, RectangleEdge.BOTTOM);
Line2D line = new Line2D.Double(v, dataArea.getMinY(), v,
dataArea.getMaxY());
g2.setPaint(getDomainGridlinePaint());
g2.setStroke(getDomainGridlineStroke());
g2.draw(line);
}
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, saved);
}
/**
* Draws the gridlines for the plot, if they are visible.
*
* @param g2 the graphics device.
* @param dataArea the data area.
* @param ticks the ticks.
*/
protected void drawRangeGridlines(Graphics2D g2, Rectangle2D dataArea,
List ticks) {
if (!isRangeGridlinesVisible()) {
return;
}
Object saved = g2.getRenderingHint(RenderingHints.KEY_STROKE_CONTROL);
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
RenderingHints.VALUE_STROKE_NORMALIZE);
for (Object o : ticks) {
ValueTick tick = (ValueTick) o;
double v = this.rangeAxis.valueToJava2D(tick.getValue(),
dataArea, RectangleEdge.LEFT);
Line2D line = new Line2D.Double(dataArea.getMinX(), v,
dataArea.getMaxX(), v);
g2.setPaint(getRangeGridlinePaint());
g2.setStroke(getRangeGridlineStroke());
g2.draw(line);
}
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, saved);
}
/**
* Returns the range of data values to be plotted along the axis, or
* {@code null} if the specified axis isn't the domain axis or the
* range axis for the plot.
*
* @param axis the axis ({@code null} permitted).
*
* @return The range (possibly {@code null}).
*/
@Override
public Range getDataRange(ValueAxis axis) {
Range result = null;
if (axis == this.domainAxis) {
result = this.xDataRange;
}
else if (axis == this.rangeAxis) {
result = this.yDataRange;
}
return result;
}
/**
* Calculates the X data range.
*
* @param data the data ({@code null} permitted).
*
* @return The range.
*/
private Range calculateXDataRange(float[][] data) {
Range result = null;
if (data != null) {
float lowest = Float.POSITIVE_INFINITY;
float highest = Float.NEGATIVE_INFINITY;
for (int i = 0; i < data[0].length; i++) {
float v = data[0][i];
if (v < lowest) {
lowest = v;
}
if (v > highest) {
highest = v;
}
}
if (lowest <= highest) {
result = new Range(lowest, highest);
}
}
return result;
}
/**
* Calculates the Y data range.
*
* @param data the data ({@code null} permitted).
*
* @return The range.
*/
private Range calculateYDataRange(float[][] data) {
Range result = null;
if (data != null) {
float lowest = Float.POSITIVE_INFINITY;
float highest = Float.NEGATIVE_INFINITY;
for (int i = 0; i < data[0].length; i++) {
float v = data[1][i];
if (v < lowest) {
lowest = v;
}
if (v > highest) {
highest = v;
}
}
if (lowest <= highest) {
result = new Range(lowest, highest);
}
}
return result;
}
/**
* Multiplies the range on the domain axis by the specified factor.
*
* @param factor the zoom factor.
* @param info the plot rendering info.
* @param source the source point.
*/
@Override
public void zoomDomainAxes(double factor, PlotRenderingInfo info,
Point2D source) {
this.domainAxis.resizeRange(factor);
}
/**
* Multiplies the range on the domain axis by the specified factor.
*
* @param factor the zoom factor.
* @param info the plot rendering info.
* @param source the source point (in Java2D space).
* @param useAnchor use source point as zoom anchor?
*
* @see #zoomRangeAxes(double, PlotRenderingInfo, Point2D, boolean)
*/
@Override
public void zoomDomainAxes(double factor, PlotRenderingInfo info,
Point2D source, boolean useAnchor) {
if (useAnchor) {
// get the source coordinate - this plot has always a VERTICAL
// orientation
double sourceX = source.getX();
double anchorX = this.domainAxis.java2DToValue(sourceX,
info.getDataArea(), RectangleEdge.BOTTOM);
this.domainAxis.resizeRange2(factor, anchorX);
}
else {
this.domainAxis.resizeRange(factor);
}
}
/**
* Zooms in on the domain axes.
*
* @param lowerPercent the new lower bound as a percentage of the current
* range.
* @param upperPercent the new upper bound as a percentage of the current
* range.
* @param info the plot rendering info.
* @param source the source point.
*/
@Override
public void zoomDomainAxes(double lowerPercent, double upperPercent,
PlotRenderingInfo info, Point2D source) {
this.domainAxis.zoomRange(lowerPercent, upperPercent);
}
/**
* Multiplies the range on the range axis/axes by the specified factor.
*
* @param factor the zoom factor.
* @param info the plot rendering info.
* @param source the source point.
*/
@Override
public void zoomRangeAxes(double factor, PlotRenderingInfo info,
Point2D source) {
this.rangeAxis.resizeRange(factor);
}
/**
* Multiplies the range on the range axis by the specified factor.
*
* @param factor the zoom factor.
* @param info the plot rendering info.
* @param source the source point (in Java2D space).
* @param useAnchor use source point as zoom anchor?
*
* @see #zoomDomainAxes(double, PlotRenderingInfo, Point2D, boolean)
*/
@Override
public void zoomRangeAxes(double factor, PlotRenderingInfo info,
Point2D source, boolean useAnchor) {
if (useAnchor) {
// get the source coordinate - this plot has always a VERTICAL
// orientation
double sourceY = source.getY();
double anchorY = this.rangeAxis.java2DToValue(sourceY,
info.getDataArea(), RectangleEdge.LEFT);
this.rangeAxis.resizeRange2(factor, anchorY);
}
else {
this.rangeAxis.resizeRange(factor);
}
}
/**
* Zooms in on the range axes.
*
* @param lowerPercent the new lower bound as a percentage of the current
* range.
* @param upperPercent the new upper bound as a percentage of the current
* range.
* @param info the plot rendering info.
* @param source the source point.
*/
@Override
public void zoomRangeAxes(double lowerPercent, double upperPercent,
PlotRenderingInfo info, Point2D source) {
this.rangeAxis.zoomRange(lowerPercent, upperPercent);
}
/**
* Returns {@code true}.
*
* @return A boolean.
*/
@Override
public boolean isDomainZoomable() {
return true;
}
/**
* Returns {@code true}.
*
* @return A boolean.
*/
@Override
public boolean isRangeZoomable() {
return true;
}
/**
* Returns {@code true} if panning is enabled for the domain axes,
* and {@code false} otherwise.
*
* @return A boolean.
*/
@Override
public boolean isDomainPannable() {
return this.domainPannable;
}
/**
* Sets the flag that enables or disables panning of the plot along the
* domain axes.
*
* @param pannable the new flag value.
*/
public void setDomainPannable(boolean pannable) {
this.domainPannable = pannable;
}
/**
* Returns {@code true} if panning is enabled for the range axes,
* and {@code false} otherwise.
*
* @return A boolean.
*/
@Override
public boolean isRangePannable() {
return this.rangePannable;
}
/**
* Sets the flag that enables or disables panning of the plot along
* the range axes.
*
* @param pannable the new flag value.
*/
public void setRangePannable(boolean pannable) {
this.rangePannable = pannable;
}
/**
* Pans the domain axes by the specified percentage.
*
* @param percent the distance to pan (as a percentage of the axis length).
* @param info the plot info
* @param source the source point where the pan action started.
*/
@Override
public void panDomainAxes(double percent, PlotRenderingInfo info,
Point2D source) {
if (!isDomainPannable() || this.domainAxis == null) {
return;
}
double length = this.domainAxis.getRange().getLength();
double adj = percent * length;
if (this.domainAxis.isInverted()) {
adj = -adj;
}
this.domainAxis.setRange(this.domainAxis.getLowerBound() + adj,
this.domainAxis.getUpperBound() + adj);
}
/**
* Pans the range axes by the specified percentage.
*
* @param percent the distance to pan (as a percentage of the axis length).
* @param info the plot info
* @param source the source point where the pan action started.
*/
@Override
public void panRangeAxes(double percent, PlotRenderingInfo info,
Point2D source) {
if (!isRangePannable() || this.rangeAxis == null) {
return;
}
double length = this.rangeAxis.getRange().getLength();
double adj = percent * length;
if (this.rangeAxis.isInverted()) {
adj = -adj;
}
this.rangeAxis.setRange(this.rangeAxis.getLowerBound() + adj,
this.rangeAxis.getUpperBound() + adj);
}
/**
* Tests an arbitrary object for equality with this plot. Note that
* {@code FastScatterPlot} carries its data around with it (rather
* than referencing a dataset), and the data is included in the
* equality test.
*
* @param obj the object ({@code null} permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!super.equals(obj)) {
return false;
}
if (!(obj instanceof FastScatterPlot)) {
return false;
}
FastScatterPlot that = (FastScatterPlot) obj;
if (this.domainPannable != that.domainPannable) {
return false;
}
if (this.rangePannable != that.rangePannable) {
return false;
}
if (!ArrayUtils.equal(this.data, that.data)) {
return false;
}
if (!Objects.equals(this.domainAxis, that.domainAxis)) {
return false;
}
if (!Objects.equals(this.rangeAxis, that.rangeAxis)) {
return false;
}
if (!PaintUtils.equal(this.paint, that.paint)) {
return false;
}
if (this.domainGridlinesVisible != that.domainGridlinesVisible) {
return false;
}
if (!PaintUtils.equal(this.domainGridlinePaint,
that.domainGridlinePaint)) {
return false;
}
if (!Objects.equals(this.domainGridlineStroke, that.domainGridlineStroke)) {
return false;
}
if (!this.rangeGridlinesVisible == that.rangeGridlinesVisible) {
return false;
}
if (!PaintUtils.equal(this.rangeGridlinePaint,
that.rangeGridlinePaint)) {
return false;
}
if (!Objects.equals(this.rangeGridlineStroke, that.rangeGridlineStroke)) {
return false;
}
return true;
}
/**
* Returns a clone of the plot.
*
* @return A clone.
*
* @throws CloneNotSupportedException if some component of the plot does
* not support cloning.
*/
@Override
public Object clone() throws CloneNotSupportedException {
FastScatterPlot clone = (FastScatterPlot) super.clone();
if (this.data != null) {
clone.data = ArrayUtils.clone(this.data);
}
if (this.domainAxis != null) {
clone.domainAxis = (ValueAxis) this.domainAxis.clone();
clone.domainAxis.setPlot(clone);
clone.domainAxis.addChangeListener(clone);
}
if (this.rangeAxis != null) {
clone.rangeAxis = (ValueAxis) this.rangeAxis.clone();
clone.rangeAxis.setPlot(clone);
clone.rangeAxis.addChangeListener(clone);
}
return clone;
}
/**
* Provides serialization support.
*
* @param stream the output stream.
*
* @throws IOException if there is an I/O error.
*/
private void writeObject(ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
SerialUtils.writePaint(this.paint, stream);
SerialUtils.writeStroke(this.domainGridlineStroke, stream);
SerialUtils.writePaint(this.domainGridlinePaint, stream);
SerialUtils.writeStroke(this.rangeGridlineStroke, stream);
SerialUtils.writePaint(this.rangeGridlinePaint, stream);
}
/**
* Provides serialization support.
*
* @param stream the input stream.
*
* @throws IOException if there is an I/O error.
* @throws ClassNotFoundException if there is a classpath problem.
*/
private void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
this.paint = SerialUtils.readPaint(stream);
this.domainGridlineStroke = SerialUtils.readStroke(stream);
this.domainGridlinePaint = SerialUtils.readPaint(stream);
this.rangeGridlineStroke = SerialUtils.readStroke(stream);
this.rangeGridlinePaint = SerialUtils.readPaint(stream);
if (this.domainAxis != null) {
this.domainAxis.addChangeListener(this);
}
if (this.rangeAxis != null) {
this.rangeAxis.addChangeListener(this);
}
}
}