geometry.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

<TD><B>Methods inherited from interface Geometry</B></TD>
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<TD><CODE>getBoundary, getBuffer, getCentroid, getClosure, getConvexHull, getDimension, getDistance, getEnvelope, getMaximalComplex, getMbRegion, getRepresentativePoint, isCycle, isMutable, isSimple, toImmutable, transform</CODE></TD>
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<TD><B>Methods inherited from interface TransfiniteSet</B></TD>
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<TD><CODE>contains, contains, difference, equals, intersection, intersects, symmetricDifference, union</CODE></TD>
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<A NAME="crs"><!-- --></A><H3>
crs</H3>
<PRE>
protected final CoordinateReferenceSystem <B>crs</B></PRE>
<DL>
<DD>The coordinate reference system used in <A HREF="../../../org/geotools/geometry/GeneralDirectPosition.html" title="class in org.geotools.geometry">direct position</A>
 coordinates.
<P>
<DL>
</DL>
</DL>

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<A NAME="Geometry(org.opengis.referencing.crs.CoordinateReferenceSystem)"><!-- --></A><H3>
Geometry</H3>
<PRE>
public <B>Geometry</B>(CoordinateReferenceSystem&nbsp;crs)</PRE>
<DL>
<DD>Constructs a geometry with the specified coordinate reference system.
<P>
<DT><B>Parameters:</B><DD><CODE>crs</CODE> - The coordinate reference system used in
            <A HREF="../../../org/geotools/geometry/GeneralDirectPosition.html" title="class in org.geotools.geometry">direct position</A> coordinates.</DL>

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<A NAME="getCoordinateReferenceSystem()"><!-- --></A><H3>
getCoordinateReferenceSystem</H3>
<PRE>
public CoordinateReferenceSystem <B>getCoordinateReferenceSystem</B>()</PRE>
<DL>
<DD>Returns the coordinate reference system used in <A HREF="../../../org/geotools/geometry/GeneralDirectPosition.html" title="class in org.geotools.geometry">direct position</A> coordinates.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getCoordinateReferenceSystem</CODE> in interface <CODE>Geometry</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The coordinate reference system used in <A HREF="../../../org/geotools/geometry/GeneralDirectPosition.html" title="class in org.geotools.geometry">direct position</A> coordinates.<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/geometry/Geometry.html#getCoordinateDimension()"><CODE>getCoordinateDimension()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getCoordinateDimension()"><!-- --></A><H3>
getCoordinateDimension</H3>
<PRE>
public int <B>getCoordinateDimension</B>()</PRE>
<DL>
<DD>Returns the dimension of the coordinates that define this , which must
 be the same as the coordinate dimension of the coordinate reference system for this
 .
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getCoordinateDimension</CODE> in interface <CODE>Geometry</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The coordinate dimension.<DT><B>See Also:</B><DD><CODE>Geometry.getDimension(org.opengis.spatialschema.geometry.DirectPosition)</CODE>, 
<A HREF="../../../org/geotools/geometry/Geometry.html#getCoordinateReferenceSystem()"><CODE>getCoordinateReferenceSystem()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="transform(org.opengis.referencing.crs.CoordinateReferenceSystem)"><!-- --></A><H3>
transform</H3>
<PRE>
public Geometry <B>transform</B>(CoordinateReferenceSystem&nbsp;newCRS)
                                                      throws TransformException</PRE>
<DL>
<DD>Returns a new  that is the coordinate transformation of this
  into the passed coordinate reference system within the accuracy
 of the transformation.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>transform</CODE> in interface <CODE>Geometry</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newCRS</CODE> - The new coordinate reference system.
<DT><B>Returns:</B><DD>The transformed .
<DT><B>Throws:</B>
<DD><CODE>TransformException</CODE> - if the transformation failed.</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>clone</B>()
             throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/CloneNotSupportedException.html" title="class or interface in java.lang">CloneNotSupportedException</A></PRE>
<DL>
<DD>Returns a clone of this geometry with <em>deep</em> copy semantic. Any change on this object
 will have no impact on the returned clone, and conversely. For big geometries, implementations
 are encouraged to share as much internal data as possible (as opposed to performing a real
 copy of the data), while preserving the deep copy semantic.
 <P>
 The default implementation throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/CloneNotSupportedException.html" title="class or interface in java.lang"><CODE>CloneNotSupportedException</CODE></A>. If subclasses
 implements <CODE>Cloneable</CODE>, then they should overrides this method.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>clone</CODE> in interface <CODE>Geometry</CODE></DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/CloneNotSupportedException.html" title="class or interface in java.lang">CloneNotSupportedException</A></CODE> - if this object do not support clone. This exception is
         never throws if this object implements <CODE>Cloneable</CODE>.</DL>
</DD>
</DL>
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