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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 1.4.2_13) on Tue Jun 05 11:36:40 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>PolygonGraphGenerator (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.graph.build.polygon.PolygonGraphGenerator class"><META NAME="keywords" CONTENT="add()"><META NAME="keywords" CONTENT="get()"><META NAME="keywords" CONTENT="remove()"><META NAME="keywords" CONTENT="setGraphBuilder()"><META NAME="keywords" CONTENT="getGraphBuilder()"><META NAME="keywords" CONTENT="getGraph()"><META NAME="keywords" CONTENT="find()"><META NAME="keywords" CONTENT="relate()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="PolygonGraphGenerator (Geotools 2.3.x 2.3.2 API)";}</SCRIPT></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=3 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/PolygonGraphGenerator.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-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"> PREV CLASS NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="PolygonGraphGenerator.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: <A HREF="#nested_class_summary">NESTED</A> | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <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.geotools.graph.build.polygon</FONT><BR>Class PolygonGraphGenerator</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by"><B>PolygonGraphGenerator</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/geotools/graph/build/GraphGenerator.html" title="interface in org.geotools.graph.build">GraphGenerator</A></DD></DL><HR><DL><DT>public class <B>PolygonGraphGenerator</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../../org/geotools/graph/build/GraphGenerator.html" title="interface in org.geotools.graph.build">GraphGenerator</A></DL><P>An implementation of GraphGenerator used to build graphs from a set of polygons. <p> This graph generator takes <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Polygon.html" title="class or interface in com.vividsolutions.jts.geom"><CODE>Polygon</CODE></A> objects as input when constructing a graph. The following code constructs a graph from a set of polygons. <pre> <code> //get some polygons Polygon[] polygons = ... //determine what the relationship will be PolygonGraphGenerator rel = new PolygonGraphGenerator.PolygonRelationship() { public boolean related(Polygon p1, Polygon p2) { return p1.intersects(p2); } public boolean equal(Polygon p1, Polygon p2) { return p1.equals(p2); } } //create the generator PolygonGraphGenerator gg = new PolygonGraphGenerator(new BasicGraphBuilder(),rel); //start building for (int i = 0; i < polygons.length; i++) { gg.add(polygons[i]); } </code> </pre> </p> For each distinct polygon added to the graph, a node is created. If two polygons are considered equal, only a single node is created. If two polygons are considered related, the associated nodes share an edge. Equality and relationship is determined by <A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.PolygonRelationship.html" title="interface in org.geotools.graph.build.polygon"><CODE>PolygonGraphGenerator.PolygonRelationship</CODE></A> interface. An instance of this interface is passed to the generator at construction.<P><P><DL><DT><B>Author:</B></DT> <DD>Justin Deoliveira, The Open Planning Project</DD><DT><B>Module:</B></DT><DD><CODE><B>ext/graph</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-graph/"><CODE>gt2-graph.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/graph/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/tags/2.3.2/ext/graph/src/org/geotools/graph/build/polygon/PolygonGraphGenerator.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static interface</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.PolygonRelationship.html" title="interface in org.geotools.graph.build.polygon">PolygonGraphGenerator.PolygonRelationship</A></B></CODE><BR> Determines the relationship among two polygons.</TD></TR></TABLE> <!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><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/geotools/graph/build/polygon/PolygonGraphGenerator.html#PolygonGraphGenerator(org.geotools.graph.build.GraphBuilder, org.geotools.graph.build.polygon.PolygonGraphGenerator.PolygonRelationship)">PolygonGraphGenerator</A></B>(<A HREF="../../../../../org/geotools/graph/build/GraphBuilder.html" title="interface in org.geotools.graph.build">GraphBuilder</A> builder, <A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.PolygonRelationship.html" title="interface in org.geotools.graph.build.polygon">PolygonGraphGenerator.PolygonRelationship</A> rel)</CODE><BR> </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"><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> <A HREF="../../../../../org/geotools/graph/structure/Graphable.html" title="interface in org.geotools.graph.structure">Graphable</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.html#add(java.lang.Object)">add</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</CODE><BR> Adds an object to the graph.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../../../org/geotools/graph/structure/Node.html" title="interface in org.geotools.graph.structure">Node</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.html#find(com.vividsolutions.jts.geom.Polygon)">find</A></B>(<A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Polygon.html" title="class or interface in com.vividsolutions.jts.geom">Polygon</A> polygon)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../org/geotools/graph/structure/Graphable.html" title="interface in org.geotools.graph.structure">Graphable</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.html#get(java.lang.Object)">get</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</CODE><BR> Retrieves a component of the graph.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../org/geotools/graph/structure/Graph.html" title="interface in org.geotools.graph.structure">Graph</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.html#getGraph()">getGraph</A></B>()</CODE><BR> Returns the graph being generated.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../org/geotools/graph/build/GraphBuilder.html" title="interface in org.geotools.graph.build">GraphBuilder</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.html#getGraphBuilder()">getGraphBuilder</A></B>()</CODE><BR> Returns the underlying builder.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/geotools/graph/build/polygon/PolygonGraphGenerator.html#relate(org.geotools.graph.structure.Node)">relate</A></B>(<A HREF="../../../../../org/geotools/graph/structure/Node.html" title="interface in org.geotools.graph.structure">Node</A> node)</CODE><BR> </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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