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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 11:36:35 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>StreamingRenderer (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.renderer.lite.StreamingRenderer class"><META NAME="keywords" CONTENT="SCALE_ACCURATE"><META NAME="keywords" CONTENT="SCALE_OGC"><META NAME="keywords" CONTENT="symbolizerAssociationHT"><META NAME="keywords" CONTENT="labelCache"><META NAME="keywords" CONTENT="setConcatTransforms()"><META NAME="keywords" CONTENT="getConcatTransforms()"><META NAME="keywords" CONTENT="addRenderListener()"><META NAME="keywords" CONTENT="removeRenderListener()"><META NAME="keywords" CONTENT="stopRendering()"><META NAME="keywords" CONTENT="paint()"><META NAME="keywords" CONTENT="isInteractive()"><META NAME="keywords" CONTENT="setInteractive()"><META NAME="keywords" CONTENT="getGeneralizationDistance()"><META NAME="keywords" CONTENT="setGeneralizationDistance()"><META NAME="keywords" CONTENT="setJava2DHints()"><META NAME="keywords" CONTENT="getJava2DHints()"><META NAME="keywords" CONTENT="setRendererHints()"><META NAME="keywords" CONTENT="getRendererHints()"><META NAME="keywords" CONTENT="setContext()"><META NAME="keywords" CONTENT="getContext()"><META NAME="keywords" CONTENT="isCanTransform()"><META NAME="keywords" CONTENT="getMathTransform()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="StreamingRenderer (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/StreamingRenderer.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"> <A HREF="../../../../org/geotools/renderer/lite/RendererUtilities.html" title="class in org.geotools.renderer.lite"><B>PREV CLASS</B></A> <A HREF="../../../../org/geotools/renderer/lite/StyledShapePainter.html" title="class in org.geotools.renderer.lite"><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="StreamingRenderer.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.geotools.renderer.lite</FONT><BR>Class StreamingRenderer</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>StreamingRenderer</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></DD></DL><HR><DL><DT>public final class <B>StreamingRenderer</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/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></DL><P>A streaming implementation of the GTRenderer interface. <ul> <li>The code is relatively simple to understand, so it can be used as a simple example of an SLD compliant rendering code</li> <li>Uses as little memory as possible</li> </ul> Use this class if you need a stateless renderer that provides low memory footprint and decent rendering performance on the first call but don't need good optimal performance on subsequent calls on the same data. Notice: for the time being, this class doesn't support GridCoverage stylers, that will be rendered using the non geophisics version of the GridCoverage, if available, with the geophisics one, otherwise. <p> At the moment the streaming renderer is not thread safe<P><P><DL><DT><B>Author:</B></DT> <DD>James Macgill, dblasby, jessie eichar, Simone Giannecchini, Andrea Aime, Alessio Fabiani</DD><DT><B>Module:</B></DT><DD><CODE><B>module/render</B></CODE> (<A HREF="http://maven.geotools.fr/repository/org/geotools/gt2-render/"><CODE>gt2-render.jar</CODE></A>) (<A HREF="http://maven.geotools.fr/reports/render/index.html">Maven report</A>) (<A HREF="http://svn.geotools.org/geotools/branches/2.3.x/module/render/src/org/geotools/renderer/lite/StreamingRenderer.java">SVN head</A>)</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><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>protected <A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/renderer/lite/StreamingRenderer.html#labelCache">labelCache</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/renderer/lite/StreamingRenderer.html#SCALE_ACCURATE">SCALE_ACCURATE</A></B></CODE><BR> Computes the scale as the ratio between map distances and real world distances, assuming 90dpi and taking into consideration projection deformations and actual earth shape. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/renderer/lite/StreamingRenderer.html#SCALE_OGC">SCALE_OGC</A></B></CODE><BR> Very simple and lenient scale computation method that conforms to the OGC SLD specification 1.0, page 26. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/IdentityHashMap.html" title="class or interface in java.util">IdentityHashMap</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/renderer/lite/StreamingRenderer.html#symbolizerAssociationHT">symbolizerAssociationHT</A></B></CODE><BR> </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"><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/renderer/lite/StreamingRenderer.html#StreamingRenderer()">StreamingRenderer</A></B>()</CODE><BR> Creates a new instance of LiteRenderer without a context. </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> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/renderer/lite/StreamingRenderer.html#addRenderListener(org.geotools.renderer.RenderListener)">addRenderListener</A></B>(<A HREF="../../../../org/geotools/renderer/RenderListener.html" title="interface in org.geotools.renderer">RenderListener</A> listener)</CODE><BR> adds a listener that responds to error events of feature rendered events.</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/geotools/renderer/lite/StreamingRenderer.html#getConcatTransforms()">getConcatTransforms</A></B>()</CODE><BR> Flag which controls behaviour for applying affine transformation to the graphics object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/geotools/map/MapContext.html" title="interface in org.geotools.map">MapContext</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/renderer/lite/StreamingRenderer.html#getContext()">getContext</A></B>()</CODE><BR> </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/geotools/renderer/lite/StreamingRenderer.html#getGeneralizationDistance()">getGeneralizationDistance</A></B>()</CODE>⌨️ 快捷键说明
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