labelcachedefault.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<PRE>
public void <B>startLayer</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></B></DD>
<DD>Called by renderer to indication the start of rendering a layer.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#startLayer()">startLayer</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#startLayer()"><CODE>LabelCache.startLayer()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getPriority(org.geotools.styling.TextSymbolizer, org.geotools.feature.Feature)"><!-- --></A><H3>
getPriority</H3>
<PRE>
public double <B>getPriority</B>(<A HREF="../../../../org/geotools/styling/TextSymbolizer.html" title="interface in org.geotools.styling">TextSymbolizer</A>&nbsp;symbolizer,
                          <A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature)</PRE>
<DL>
<DD>get the priority from the symbolizer its an expression, so it will try to
 evaluate it: 1. if its missing --> DEFAULT_PRIORITY 2. if its a number,
 return that number 3. if its not a number, convert to string and try to
 parse the number; return the number 4. otherwise, return DEFAULT_PRIORITY
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>symbolizer</CODE> - <DD><CODE>feature</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="put(org.geotools.styling.TextSymbolizer, org.geotools.feature.Feature, org.geotools.renderer.lite.LiteShape2, javax.media.jai.util.Range)"><!-- --></A><H3>
put</H3>
<PRE>
public void <B>put</B>(<A HREF="../../../../org/geotools/styling/TextSymbolizer.html" title="interface in org.geotools.styling">TextSymbolizer</A>&nbsp;symbolizer,
                <A HREF="../../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature,
                <A HREF="../../../../org/geotools/renderer/lite/LiteShape2.html" title="class in org.geotools.renderer.lite">LiteShape2</A>&nbsp;shape,
                <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/util/Range.html" title="class or interface in javax.media.jai.util">Range</A>&nbsp;scaleRange)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></B></DD>
<DD>Puts a TextStyle and its associated shape in the cache.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#put(org.geotools.styling.TextSymbolizer, org.geotools.feature.Feature, org.geotools.renderer.lite.LiteShape2, javax.media.jai.util.Range)">put</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>symbolizer</CODE> - the TextSymbolizer containing the style information<DD><CODE>feature</CODE> - <DD><CODE>shape</CODE> - the shape to be labeled<DD><CODE>scaleRange</CODE> - <DT><B>See Also:</B><DD><CODE>org.geotools.renderer.lite.LabelCache#put(org.geotools.renderer.style.TextStyle2D,
      org.geotools.renderer.lite.LiteShape)</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="endLayer(java.awt.Graphics2D, java.awt.Rectangle)"><!-- --></A><H3>
endLayer</H3>
<PRE>
public void <B>endLayer</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Graphics2D.html" title="class or interface in java.awt">Graphics2D</A>&nbsp;graphics,
                     <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Rectangle.html" title="class or interface in java.awt">Rectangle</A>&nbsp;displayArea)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></B></DD>
<DD>Called to indicate that a layer is done rendering.  The method may draw labels if appropriate
 for the labeling algorithm
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#endLayer(java.awt.Graphics2D, java.awt.Rectangle)">endLayer</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - the graphics to draw on.<DD><CODE>displayArea</CODE> - The size of the display area.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#endLayer(java.awt.Graphics2D, java.awt.Rectangle)"><CODE>LabelCache.endLayer(java.awt.Graphics2D,
      java.awt.Rectangle)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="orderedLabels()"><!-- --></A><H3>
orderedLabels</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>orderedLabels</B>()</PRE>
<DL>
<DD>return a list with all the values in priority order. Both grouped and
 non-grouped
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="end(java.awt.Graphics2D, java.awt.Rectangle)"><!-- --></A><H3>
end</H3>
<PRE>
public void <B>end</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Graphics2D.html" title="class or interface in java.awt">Graphics2D</A>&nbsp;graphics,
                <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Rectangle.html" title="class or interface in java.awt">Rectangle</A>&nbsp;displayArea)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></B></DD>
<DD>Called to indicate that the map is done rendering.  The method may draw labels if appropriate
 for the labeling algorithm
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#end(java.awt.Graphics2D, java.awt.Rectangle)">end</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html" title="interface in org.geotools.renderer.lite">LabelCache</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - the graphics to draw on.<DD><CODE>displayArea</CODE> - The size of the display area.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/renderer/lite/LabelCache.html#end(java.awt.Graphics2D, java.awt.Rectangle)"><CODE>LabelCache.end(java.awt.Graphics2D,
      java.awt.Rectangle)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="clipLineString(com.vividsolutions.jts.geom.LineString, com.vividsolutions.jts.geom.Polygon, com.vividsolutions.jts.geom.Envelope)"><!-- --></A><H3>
clipLineString</H3>
<PRE>
public <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/MultiLineString.html" title="class or interface in com.vividsolutions.jts.geom">MultiLineString</A> <B>clipLineString</B>(<A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/LineString.html" title="class or interface in com.vividsolutions.jts.geom">LineString</A>&nbsp;line,
                                      <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>&nbsp;bbox,
                                      <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Envelope.html" title="class or interface in com.vividsolutions.jts.geom">Envelope</A>&nbsp;displayGeomEnv)</PRE>
<DL>
<DD>try to be more robust dont bother returning points

 This will try to solve robustness problems, but read code as to what it
 does. It might return the unclipped line if there's a problem!
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>line</CODE> - <DD><CODE>bbox</CODE> - MUST BE A BOUNDING BOX</DL>
</DD>
</DL>
<HR>

<A NAME="clipPolygon(com.vividsolutions.jts.geom.Polygon, com.vividsolutions.jts.geom.Polygon, com.vividsolutions.jts.geom.Envelope)"><!-- --></A><H3>
clipPolygon</H3>
<PRE>
public <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/MultiPolygon.html" title="class or interface in com.vividsolutions.jts.geom">MultiPolygon</A> <B>clipPolygon</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>&nbsp;poly,
                                <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>&nbsp;bbox,
                                <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Envelope.html" title="class or interface in com.vividsolutions.jts.geom">Envelope</A>&nbsp;displayGeomEnv)</PRE>
<DL>
<DD>try to do a more robust way of clipping a polygon to a bounding box. This
 might return the orginal polygon if it cannot clip TODO: this is a bit
 simplistic, there's lots more to do.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>poly</CODE> - <DD><CODE>bbox</CODE> - <DD><CODE>displayGeomEnv</CODE> - 
<DT><B>Returns:</B><DD>a MutliPolygon</DL>
</DD>
</DL>
<HR>

<A NAME="processNodes(java.util.List, java.util.Hashtable, java.util.ArrayList)"><!-- --></A><H3>
processNodes</H3>
<PRE>
public void <B>processNodes</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A>&nbsp;edges,
                         <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Hashtable.html" title="class or interface in java.util">Hashtable</A>&nbsp;nodes,
                         <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/ArrayList.html" title="class or interface in java.util">ArrayList</A>&nbsp;result)</PRE>
<DL>
<DD>pull a line from the list, and: 1. if nothing connects to it (its
 issolated), add it to "result" 2. otherwise, merge it at the start/end
 with the LONGEST line there. 3. remove the original line, and the lines
 it merged with from the hashtables 4. go again, with the merged line
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>edges</CODE> - <DD><CODE>nodes</CODE> - <DD><CODE>result</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="removeFromHash(java.util.Hashtable, com.vividsolutions.jts.geom.LineString)"><!-- --></A><H3>
removeFromHash</H3>
<PRE>
public void <B>removeFromHash</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Hashtable.html" title="class or interface in java.util">Hashtable</A>&nbsp;nodes,
                           <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/LineString.html" title="class or interface in com.vividsolutions.jts.geom">LineString</A>&nbsp;ls)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getLongest(java.util.ArrayList)"><!-- --></A><H3>
getLongest</H3>
<PRE>
public <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/LineString.html" title="class or interface in com.vividsolutions.jts.geom">LineString</A> <B>getLongest</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/ArrayList.html" title="class or interface in java.util">ArrayList</A>&nbsp;al)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="putInNodeHash(com.vividsolutions.jts.geom.LineString, java.util.Hashtable)"><!-- --></A><H3>
putInNodeHash</H3>
<PRE>
public void <B>putInNodeHash</B>(<A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/LineString.html" title="class or interface in com.vividsolutions.jts.geom">LineString</A>&nbsp;ls,
                          <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Hashtable.html" title="class or interface in java.util">Hashtable</A>&nbsp;nodes)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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