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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN""http://www.w3.org/TR/REC-html40/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Sep 11 11:26:59 BST 2003 --><TITLE>XYPointerAnnotation (JFreeChart Class Library (version 0.9.12))</TITLE><META NAME="keywords" CONTENT="org.jfree.chart.annotations.XYPointerAnnotation,XYPointerAnnotation class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"></HEAD><SCRIPT>function asd(){parent.document.title="XYPointerAnnotation (JFreeChart Class Library (version 0.9.12))";}</SCRIPT><BODY BGCOLOR="white" onload="asd();"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <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="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-all.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"><B>PREV CLASS</B></A> <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="XYPointerAnnotation.html" TARGET="_top"><B>NO FRAMES</B></A> <SCRIPT> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html" TARGET=""><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT><A HREF="../../../../allclasses-noframe.html" TARGET=""><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><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.jfree.chart.annotations</FONT><BR>Class XYPointerAnnotation</H2><PRE>java.lang.Object | +--<A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html">org.jfree.chart.annotations.TextAnnotation</A> | +--<A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html">org.jfree.chart.annotations.XYTextAnnotation</A> | +--<B>org.jfree.chart.annotations.XYPointerAnnotation</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable, java.io.Serializable, <A HREF="../../../../org/jfree/chart/annotations/XYAnnotation.html">XYAnnotation</A></DD></DL><HR><DL><DT>public class <B>XYPointerAnnotation</B><DT>extends <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html">XYTextAnnotation</A><DT>implements <A HREF="../../../../org/jfree/chart/annotations/XYAnnotation.html">XYAnnotation</A>, java.lang.Cloneable, java.io.Serializable</DL><P>An arrow and label that can be placed on an <A HREF="../../../../org/jfree/chart/plot/XYPlot.html"><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> See the <code>MarkerDemo1.java</code> source file in the JFreeChart distribution for an example.<P><P><DL><DT><B>Author:</B></DT> <DD>David Gilbert</DD><DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html" TARGET="org.jfree.chart.annotations.XYPointerAnnotation">Serialized Form</A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></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_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.TextAnnotation"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from class org.jfree.chart.annotations.<A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html">TextAnnotation</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#DEFAULT_FONT">DEFAULT_FONT</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#DEFAULT_PAINT">DEFAULT_PAINT</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#DEFAULT_ROTATION_ANCHOR">DEFAULT_ROTATION_ANCHOR</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#DEFAULT_ROTATION_ANGLE">DEFAULT_ROTATION_ANGLE</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#DEFAULT_TEXT_ANCHOR">DEFAULT_TEXT_ANCHOR</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></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" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></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)">draw</A></B>(java.awt.Graphics2D g2, <A HREF="../../../../org/jfree/chart/plot/XYPlot.html">XYPlot</A> plot, java.awt.geom.Rectangle2D dataArea, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html">ValueAxis</A> domainAxis, <A HREF="../../../../org/jfree/chart/axis/ValueAxis.html">ValueAxis</A> rangeAxis)</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 object)</CODE><BR> Tests this annotation for equality with an 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#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> 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"><CODE> double</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/chart/annotations/XYPointerAnnotation.html#getTipRadius()">getTipRadius</A></B>()</CODE><BR> Returns the tip radius.</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#setArrowLength(double)">setArrowLength</A></B>(double length)</CODE><BR> Sets the arrow length.</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#setArrowWidth(double)">setArrowWidth</A></B>(double width)</CODE><BR> Sets the arrow width.</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#setBaseRadius(double)">setBaseRadius</A></B>(double radius)</CODE><BR> Sets the base radius.</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#setLabelOffset(double)">setLabelOffset</A></B>(double offset)</CODE><BR> Sets the label offset (from the arrow base, continuing in a straight line, in Java2D units).</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#setTipRadius(double)">setTipRadius</A></B>(double radius)</CODE><BR> Sets the tip radius.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_org.jfree.chart.annotations.XYTextAnnotation"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class org.jfree.chart.annotations.<A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html">XYTextAnnotation</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#getX()">getX</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#getY()">getY</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#setX(double)">setX</A>, <A HREF="../../../../org/jfree/chart/annotations/XYTextAnnotation.html#setY(double)">setY</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_org.jfree.chart.annotations.TextAnnotation"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class org.jfree.chart.annotations.<A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html">TextAnnotation</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#getFont()">getFont</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#getPaint()">getPaint</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#getRotationAnchor()">getRotationAnchor</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#getRotationAngle()">getRotationAngle</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#getText()">getText</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#getTextAnchor()">getTextAnchor</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#setFont(java.awt.Font)">setFont</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#setPaint(java.awt.Paint)">setPaint</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#setRotationAnchor(org.jfree.ui.TextAnchor)">setRotationAnchor</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#setRotationAngle(double)">setRotationAngle</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#setText(java.lang.String)">setText</A>, <A HREF="../../../../org/jfree/chart/annotations/TextAnnotation.html#setTextAnchor(org.jfree.ui.TextAnchor)">setTextAnchor</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Field Detail</B></FONT></TD></TR></TABLE><A NAME="DEFAULT_TIP_RADIUS"><!-- --></A><H3>DEFAULT_TIP_RADIUS</H3><PRE>public static final double <B>DEFAULT_TIP_RADIUS</B></PRE><DL><DD>The default tip radius (in Java2D units).<P><DL><DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.jfree.chart.annotations.XYPointerAnnotation.DEFAULT_TIP_RADIUS">Constant Field Values</A></DL>⌨️ 快捷键说明
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