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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Fri Aug 25 15:14:29 BST 2006 --><TITLE>XYPointerAnnotation (JFreeChart Class Library (version 1.0.2))</TITLE><META NAME="keywords" CONTENT="org.jfree.chart.annotations.XYPointerAnnotation class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="XYPointerAnnotation (JFreeChart Class Library (version 1.0.2))";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/XYPointerAnnotation.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/jfree/chart/annotations/XYLineAnnotation.html" title="class in org.jfree.chart.annotations"><B>PREV CLASS</B></A> <A HREF="../../../../org/jfree/chart/annotations/XYPolygonAnnotation.html" title="class in org.jfree.chart.annotations"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/jfree/chart/annotations/XYPointerAnnotation.html" target="_top"><B>FRAMES</B></A> <A HREF="XYPointerAnnotation.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.jfree.chart.annotations</FONT><BR>Class XYPointerAnnotation</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/jfree/chart/annotations/AbstractXYAnnotation.html" title="class in org.jfree.chart.annotations">org.jfree.chart.annotations.AbstractXYAnnotation</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html" title="class in org.jfree.chart.annotations">org.jfree.chart.annotations.XYTextAnnotation</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.jfree.chart.annotations.XYPointerAnnotation</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable, java.lang.Cloneable, <A HREF="../../../../org/jfree/chart/annotations/XYAnnotation.html" title="interface in org.jfree.chart.annotations">XYAnnotation</A>, org.jfree.util.PublicCloneable</DD></DL><HR><DL><DT><PRE>public class <A HREF="../../../../src-html/org/jfree/chart/annotations/XYPointerAnnotation.html#line.92"><B>XYPointerAnnotation</B></A><DT>extends <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html" title="class in org.jfree.chart.annotations">XYTextAnnotation</A><DT>implements java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable</DL></PRE><P>An arrow and label that can be placed on an <A HREF="../../../../org/jfree/chart/plot/XYPlot.html" title="class in org.jfree.chart.plot"><CODE>XYPlot</CODE></A>. The arrow is drawn at a user-definable angle so that it points towards the (x, y) location for the annotation. <p> The arrow length (and its offset from the (x, y) location) is controlled by the tip radius and the base radius attributes. Imagine two circles around the (x, y) coordinate: the inner circle defined by the tip radius, and the outer circle defined by the base radius. Now, draw the arrow starting at some point on the outer circle (the point is determined by the angle), with the arrow tip being drawn at a corresponding point on the inner circle.<P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.jfree.chart.annotations.XYPointerAnnotation">Serialized Form</A></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#DEFAULT_ARROW_LENGTH">DEFAULT_ARROW_LENGTH</A></B></CODE><BR> The default arrow length (in Java2D units).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#DEFAULT_ARROW_WIDTH">DEFAULT_ARROW_WIDTH</A></B></CODE><BR> The default arrow width (in Java2D units).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#DEFAULT_BASE_RADIUS">DEFAULT_BASE_RADIUS</A></B></CODE><BR> The default base radius (in Java2D units).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#DEFAULT_LABEL_OFFSET">DEFAULT_LABEL_OFFSET</A></B></CODE><BR> The default label offset (in Java2D units).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#DEFAULT_TIP_RADIUS">DEFAULT_TIP_RADIUS</A></B></CODE><BR> The default tip radius (in Java2D units).</TD></TR></TABLE> <A NAME="fields_inherited_from_class_org.jfree.chart.annotations.XYTextAnnotation"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class org.jfree.chart.annotations.<A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html" title="class in org.jfree.chart.annotations">XYTextAnnotation</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#DEFAULT_FONT">DEFAULT_FONT</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#DEFAULT_PAINT">DEFAULT_PAINT</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#DEFAULT_ROTATION_ANCHOR">DEFAULT_ROTATION_ANCHOR</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#DEFAULT_ROTATION_ANGLE">DEFAULT_ROTATION_ANGLE</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#DEFAULT_TEXT_ANCHOR">DEFAULT_TEXT_ANCHOR</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#XYPointerAnnotation(java.lang.String, double, double, double)">XYPointerAnnotation</A></B>(java.lang.String label, double x, double y, double angle)</CODE><BR> Creates a new label and arrow annotation.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#clone()">clone</A></B>()</CODE><BR> Returns a clone of the annotation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#draw(java.awt.Graphics2D, org.jfree.chart.plot.XYPlot, java.awt.geom.Rectangle2D, org.jfree.chart.axis.ValueAxis, org.jfree.chart.axis.ValueAxis, int, org.jfree.chart.plot.PlotRenderingInfo)">draw</A></B>(java.awt.Graphics2D g2, <A HREF="../../../../org/jfree/chart/plot/XYPlot.html" title="class in org.jfree.chart.plot">XYPlot</A> plot, java.awt.geom.Rectangle2D dataArea, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A> domainAxis, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html" title="class in org.jfree.chart.axis">ValueAxis</A> rangeAxis, int rendererIndex, <A HREF="../../../../org/jfree/chart/plot/PlotRenderingInfo.html" title="class in org.jfree.chart.plot">PlotRenderingInfo</A> info)</CODE><BR> Draws the annotation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object obj)</CODE><BR> Tests this annotation for equality with an arbitrary object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getAngle()">getAngle</A></B>()</CODE><BR> Returns the angle of the arrow.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getArrowLength()">getArrowLength</A></B>()</CODE><BR> Returns the arrow length.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.awt.Paint</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getArrowPaint()">getArrowPaint</A></B>()</CODE><BR> Sets the paint used for the arrow.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.awt.Stroke</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getArrowStroke()">getArrowStroke</A></B>()</CODE><BR> Returns the stroke used to draw the arrow line.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getArrowWidth()">getArrowWidth</A></B>()</CODE><BR> Returns the arrow width.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getBaseRadius()">getBaseRadius</A></B>()</CODE><BR> Sets the base radius.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getLabelOffset()">getLabelOffset</A></B>()</CODE><BR> Sets the label offset.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">⌨️ 快捷键说明
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