streamingrenderer.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

<A NAME="constructor_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="StreamingRenderer()"><!-- --></A><H3>
StreamingRenderer</H3>
<PRE>
public <B>StreamingRenderer</B>()</PRE>
<DL>
<DD>Creates a new instance of LiteRenderer without a context. Use it only to
 gain access to utility methods of this class or if you want to render
 random feature collections instead of using the map context interface
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TD>
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</TABLE>

<A NAME="setConcatTransforms(boolean)"><!-- --></A><H3>
setConcatTransforms</H3>
<PRE>
public void <B>setConcatTransforms</B>(boolean&nbsp;flag)</PRE>
<DL>
<DD>Sets the flag which controls behaviour for applying affine transformation
 to the graphics object.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>flag</CODE> - If true then the transform will be concatenated to the
            existing transform. If false it will be replaced.</DL>
</DD>
</DL>
<HR>

<A NAME="getConcatTransforms()"><!-- --></A><H3>
getConcatTransforms</H3>
<PRE>
public boolean <B>getConcatTransforms</B>()</PRE>
<DL>
<DD>Flag which controls behaviour for applying affine transformation to the
 graphics object.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a boolean flag. If true then the transform will be concatenated
         to the existing transform. If false it will be replaced.</DL>
</DD>
</DL>
<HR>

<A NAME="addRenderListener(org.geotools.renderer.RenderListener)"><!-- --></A><H3>
addRenderListener</H3>
<PRE>
public void <B>addRenderListener</B>(<A HREF="../../../../org/geotools/renderer/RenderListener.html" title="interface in org.geotools.renderer">RenderListener</A>&nbsp;listener)</PRE>
<DL>
<DD>adds a listener that responds to error events of feature rendered events.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#addRenderListener(org.geotools.renderer.RenderListener)">addRenderListener</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - the listener to add.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/renderer/RenderListener.html" title="interface in org.geotools.renderer"><CODE>RenderListener</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="removeRenderListener(org.geotools.renderer.RenderListener)"><!-- --></A><H3>
removeRenderListener</H3>
<PRE>
public void <B>removeRenderListener</B>(<A HREF="../../../../org/geotools/renderer/RenderListener.html" title="interface in org.geotools.renderer">RenderListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Removes a render listener.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#removeRenderListener(org.geotools.renderer.RenderListener)">removeRenderListener</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - the listener to remove.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/renderer/RenderListener.html" title="interface in org.geotools.renderer"><CODE>RenderListener</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="stopRendering()"><!-- --></A><H3>
stopRendering</H3>
<PRE>
public void <B>stopRendering</B>()</PRE>
<DL>
<DD>If you call this method from another thread than the one that called
 <code>paint</code> or <code>render</code> the rendering will be
 forcefully stopped before termination
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#stopRendering()">stopRendering</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="paint(java.awt.Graphics2D, java.awt.Rectangle, java.awt.geom.AffineTransform)"><!-- --></A><H3>
paint</H3>
<PRE>
public void <B>paint</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;paintArea,
                  <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/AffineTransform.html" title="class or interface in java.awt.geom">AffineTransform</A>&nbsp;worldToScreen)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>Use paint(Graphics2D graphics, Rectangle paintArea,
             ReferencedEnvelope mapArea) or paint(Graphics2D graphics,
             Rectangle paintArea, ReferencedEnvelope mapArea,
             AffineTransform worldToScreen) instead.</I>
<P>
<DD>Renders features based on the map layers and their styles as specified in
 the map context using <code>setContext</code>. <p/> This version of
 the method assumes that the size of the output area and the
 transformation from coordinates to pixels are known. The latter
 determines the map scale. The viewport (the visible part of the map) will
 be calculated internally.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#paint(java.awt.Graphics2D, java.awt.Rectangle, java.awt.geom.AffineTransform)">paint</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - The graphics object to draw to.<DD><CODE>paintArea</CODE> - The size of the output area in output units (eg: pixels).<DD><CODE>worldToScreen</CODE> - A transform which converts World coordinates to Screen
            coordinates.<DT><B>'TODO:'</B></DT>
  <DD>Need to check if the Layer CoordinateSystem is different to the
       BoundingBox rendering CoordinateSystem and if so, then transform
       the coordinates.</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="paint(java.awt.Graphics2D, java.awt.Rectangle, com.vividsolutions.jts.geom.Envelope)"><!-- --></A><H3>
paint</H3>
<PRE>
public void <B>paint</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;paintArea,
                  <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;mapArea)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>Use paint(Graphics2D graphics, Rectangle paintArea,
             ReferencedEnvelope mapArea) or paint(Graphics2D graphics,
             Rectangle paintArea, ReferencedEnvelope mapArea,
             AffineTransform worldToScreen) instead.</I>
<P>
<DD>Renders features based on the map layers and their styles as specified in
 the map context using <code>setContext</code>. <p/> This version of
 the method assumes that the area of the visible part of the map and the
 size of the output area are known. The transform between the two is
 calculated internally.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#paint(java.awt.Graphics2D, java.awt.Rectangle, com.vividsolutions.jts.geom.Envelope)">paint</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - The graphics object to draw to.<DD><CODE>paintArea</CODE> - The size of the output area in output units (eg: pixels).<DD><CODE>mapArea</CODE> - the map's visible area (viewport) in map coordinates.</DL>
</DD>
</DL>
<HR>

<A NAME="paint(java.awt.Graphics2D, java.awt.Rectangle, org.geotools.geometry.jts.ReferencedEnvelope)"><!-- --></A><H3>
paint</H3>
<PRE>
public void <B>paint</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;paintArea,
                  <A HREF="../../../../org/geotools/geometry/jts/ReferencedEnvelope.html" title="class in org.geotools.geometry.jts">ReferencedEnvelope</A>&nbsp;mapArea)</PRE>
<DL>
<DD>Renders features based on the map layers and their styles as specified in
 the map context using <code>setContext</code>. <p/> This version of
 the method assumes that the area of the visible part of the map and the
 size of the output area are known. The transform between the two is
 calculated internally.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#paint(java.awt.Graphics2D, java.awt.Rectangle, org.geotools.geometry.jts.ReferencedEnvelope)">paint</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - The graphics object to draw to.<DD><CODE>paintArea</CODE> - The size of the output area in output units (eg: pixels).<DD><CODE>mapArea</CODE> - the map's visible area (viewport) in map coordinates.</DL>
</DD>
</DL>
<HR>

<A NAME="paint(java.awt.Graphics2D, java.awt.Rectangle, com.vividsolutions.jts.geom.Envelope, java.awt.geom.AffineTransform)"><!-- --></A><H3>
paint</H3>
<PRE>
public void <B>paint</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;paintArea,
                  <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;mapArea,
                  <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/AffineTransform.html" title="class or interface in java.awt.geom">AffineTransform</A>&nbsp;worldToScreen)</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>Use paint(Graphics2D graphics, Rectangle paintArea,
             ReferencedEnvelope mapArea) or paint(Graphics2D graphics,
             Rectangle paintArea, ReferencedEnvelope mapArea,
             AffineTransform worldToScreen) instead.</I>
<P>
<DD>Renders features based on the map layers and their styles as specified in
 the map context using <code>setContext</code>. <p/> This version of
 the method assumes that paint area, enelope and worldToScreen transform
 are already computed. Use this method to avoid recomputation. <b>Note
 however that no check is performed that they are really in sync!<b/>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#paint(java.awt.Graphics2D, java.awt.Rectangle, com.vividsolutions.jts.geom.Envelope, java.awt.geom.AffineTransform)">paint</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - The graphics object to draw to.<DD><CODE>paintArea</CODE> - The size of the output area in output units (eg: pixels).<DD><CODE>mapArea</CODE> - the map's visible area (viewport) in map coordinates.<DD><CODE>worldToScreen</CODE> - A transform which converts World coordinates to Screen
            coordinates.</DL>
</DD>
</DL>
<HR>

<A NAME="paint(java.awt.Graphics2D, java.awt.Rectangle, org.geotools.geometry.jts.ReferencedEnvelope, java.awt.geom.AffineTransform)"><!-- --></A><H3>
paint</H3>
<PRE>
public void <B>paint</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;paintArea,
                  <A HREF="../../../../org/geotools/geometry/jts/ReferencedEnvelope.html" title="class in org.geotools.geometry.jts">ReferencedEnvelope</A>&nbsp;mapArea,
                  <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/AffineTransform.html" title="class or interface in java.awt.geom">AffineTransform</A>&nbsp;worldToScreen)</PRE>
<DL>
<DD>Renders features based on the map layers and their styles as specified in
 the map context using <code>setContext</code>. <p/> This version of
 the method assumes that paint area, enelope and worldToScreen transform
 are already computed. Use this method to avoid recomputation. <b>Note
 however that no check is performed that they are really in sync!<b/>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html#paint(java.awt.Graphics2D, java.awt.Rectangle, org.geotools.geometry.jts.ReferencedEnvelope, java.awt.geom.AffineTransform)">paint</A></CODE> in interface <CODE><A HREF="../../../../org/geotools/renderer/GTRenderer.html" title="interface in org.geotools.renderer">GTRenderer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>graphics</CODE> - The graphics object to draw to.<DD><CODE>paintArea</CODE> - The size of the output area in output units (eg: pixels).<DD><CODE>mapArea</CODE> - the map's visible area (viewport) in map coordinates. Its
            associate CRS is ALWAYS 2D<DD><CODE>worldToScreen</CODE> - A transform which converts World coordinates to Screen
            coordinates.</DL>
</DD>
</DL>
<HR>