liteshape.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

 boundary and provides access to the geometry of the <code>Shape</code>
 outline.  If an optional <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/AffineTransform.html" title="class or interface in java.awt.geom"><CODE>AffineTransform</CODE></A> is specified, the
 coordinates returned in the iteration are transformed accordingly.
 
 <p>
 Each call to this method returns a fresh <code>PathIterator</code>
 object that traverses the geometry of the <code>Shape</code> object
 independently from any other <code>PathIterator</code> objects in use
 at the same time.
 </p>
 
 <p>
 It is recommended, but not guaranteed, that objects implementing the
 <code>Shape</code> interface isolate iterations that are in process
 from any changes that might occur to the original object's geometry
 during such iterations.
 </p>
 
 <p>
 Before using a particular implementation of the <code>Shape</code>
 interface in more than one thread simultaneously, refer to its
 documentation to verify that it guarantees that iterations are isolated
 from modifications.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html#getPathIterator(java.awt.geom.AffineTransform)" title="class or interface in java.awt">getPathIterator</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>at</CODE> - an optional <code>AffineTransform</code> to be applied to the
        coordinates as they are returned in the iteration, or
        <code>null</code> if untransformed coordinates are desired
<DT><B>Returns:</B><DD>a new <code>PathIterator</code> object, which independently
         traverses the geometry of the <code>Shape</code>.</DL>
</DD>
</DL>
<HR>

<A NAME="getPathIterator(java.awt.geom.AffineTransform, double)"><!-- --></A><H3>
getPathIterator</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/PathIterator.html" title="class or interface in java.awt.geom">PathIterator</A> <B>getPathIterator</B>(<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;at,
                                    double&nbsp;flatness)</PRE>
<DL>
<DD>Returns an iterator object that iterates along the <code>Shape</code>
 boundary and provides access to a flattened view of the
 <code>Shape</code> outline geometry.
 
 <p>
 Only SEG_MOVETO, SEG_LINETO, and SEG_CLOSE point types are returned by
 the iterator.
 </p>
 
 <p>
 If an optional <code>AffineTransform</code> is specified, the
 coordinates returned in the iteration are transformed accordingly.
 </p>
 
 <p>
 The amount of subdivision of the curved segments is controlled by the
 <code>flatness</code> parameter, which specifies the maximum distance
 that any point on the unflattened transformed curve can deviate from
 the returned flattened path segments. Note that a limit on the accuracy
 of the flattened path might be silently imposed, causing very small
 flattening parameters to be treated as larger values.  This limit, if
 there is one, is defined by the particular implementation that is used.
 </p>
 
 <p>
 Each call to this method returns a fresh <code>PathIterator</code>
 object that traverses the <code>Shape</code> object geometry
 independently from any other <code>PathIterator</code> objects in use
 at the same time.
 </p>
 
 <p>
 It is recommended, but not guaranteed, that objects implementing the
 <code>Shape</code> interface isolate iterations that are in process
 from any changes that might occur to the original object's geometry
 during such iterations.
 </p>
 
 <p>
 Before using a particular implementation of this interface in more than
 one thread simultaneously, refer to its documentation to verify that it
 guarantees that iterations are isolated from modifications.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html#getPathIterator(java.awt.geom.AffineTransform, double)" title="class or interface in java.awt">getPathIterator</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>at</CODE> - an optional <code>AffineTransform</code> to be applied to the
        coordinates as they are returned in the iteration, or
        <code>null</code> if untransformed coordinates are desired<DD><CODE>flatness</CODE> - the maximum distance that the line segments used to
        approximate the curved segments are allowed to deviate from any
        point on the original curve
<DT><B>Returns:</B><DD>a new <code>PathIterator</code> that independently traverses the
         <code>Shape</code> geometry.</DL>
</DD>
</DL>
<HR>

<A NAME="intersects(java.awt.geom.Rectangle2D)"><!-- --></A><H3>
intersects</H3>
<PRE>
public boolean <B>intersects</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Rectangle2D.html" title="class or interface in java.awt.geom">Rectangle2D</A>&nbsp;r)</PRE>
<DL>
<DD>Tests if the interior of the <code>Shape</code> intersects the interior
 of a specified <code>Rectangle2D</code>. This method might
 conservatively return <code>true</code> when:
 
 <ul>
 <li>
 there is a high probability that the <code>Rectangle2D</code> and the
 <code>Shape</code> intersect, but
 </li>
 <li>
 the calculations to accurately determine this intersection are
 prohibitively expensive.
 </li>
 </ul>
 
 This means that this method might return <code>true</code> even though
 the <code>Rectangle2D</code> does not intersect the <code>Shape</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html#intersects(java.awt.geom.Rectangle2D)" title="class or interface in java.awt">intersects</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>r</CODE> - the specified <code>Rectangle2D</code>
<DT><B>Returns:</B><DD><code>true</code> if the interior of the <code>Shape</code> and
         the interior of the specified <code>Rectangle2D</code>
         intersect, or are both highly likely to intersect and
         intersection     calculations would be too expensive to
         perform; <code>false</code>     otherwise.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/renderer/lite/LiteShape.html#intersects(double, double, double, double)"><CODE>intersects(double, double, double, double)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="intersects(double, double, double, double)"><!-- --></A><H3>
intersects</H3>
<PRE>
public boolean <B>intersects</B>(double&nbsp;x,
                          double&nbsp;y,
                          double&nbsp;w,
                          double&nbsp;h)</PRE>
<DL>
<DD>Tests if the interior of the <code>Shape</code> intersects the interior
 of a specified rectangular area. The rectangular area is considered to
 intersect the <code>Shape</code> if any point is contained in both the
 interior of the <code>Shape</code> and the specified rectangular area.
 
 <p>
 This method might conservatively return <code>true</code> when:
 
 <ul>
 <li>
 there is a high probability that the rectangular area and the
 <code>Shape</code> intersect, but
 </li>
 <li>
 the calculations to accurately determine this intersection are
 prohibitively expensive.
 </li>
 </ul>
 
 This means that this method might return <code>true</code> even though
 the rectangular area does not intersect the <code>Shape</code>. The
 <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Area.html" title="class or interface in java.awt.geom"><CODE>Area</CODE></A> class can be used to perform more
 accurate computations of geometric intersection for any
 <code>Shape</code> object if a more precise answer is required.
 </p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html#intersects(double, double, double, double)" title="class or interface in java.awt">intersects</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the coordinates of the specified rectangular area, x value<DD><CODE>y</CODE> - the coordinates of the specified rectangular area, y value<DD><CODE>w</CODE> - the width of the specified rectangular area<DD><CODE>h</CODE> - the height of the specified rectangular area
<DT><B>Returns:</B><DD><code>true</code> if the interior of the <code>Shape</code> and
         the interior of the rectangular area intersect, or are both
         highly likely to intersect and intersection calculations would
         be too expensive to perform; <code>false</code> otherwise.<DT><B>See Also:</B><DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Area.html" title="class or interface in java.awt.geom"><CODE>Area</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getAffineTransform()"><!-- --></A><H3>
getAffineTransform</H3>
<PRE>
public <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> <B>getAffineTransform</B>()</PRE>
<DL>
<DD>Returns the affine transform for this lite shape
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getGeometry()"><!-- --></A><H3>
getGeometry</H3>
<PRE>
public <A HREF="http://www.jump-project.org/docs/jts/1.7/api/com/vividsolutions/jts/geom/Geometry.html" title="class or interface in com.vividsolutions.jts.geom">Geometry</A> <B>getGeometry</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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