ogr__geometry_8h-source.html

gdal库的学习文档

<a name="l00211"></a>00211 {
<a name="l00212"></a>00212   <span class="keyword">public</span>:
<a name="l00213"></a>00213             OGRCurve();
<a name="l00214"></a>00214     <span class="keyword">virtual</span> ~OGRCurve();
<a name="l00215"></a>00215     <span class="comment">// ICurve methods</span>
<a name="l00216"></a>00216     <span class="keyword">virtual</span> <span class="keywordtype">double</span> get_Length() <span class="keyword">const </span>= 0;
<a name="l00217"></a>00217     <span class="keyword">virtual</span> <span class="keywordtype">void</span> StartPoint(OGRPoint *) <span class="keyword">const </span>= 0;
<a name="l00218"></a>00218     <span class="keyword">virtual</span> <span class="keywordtype">void</span> EndPoint(OGRPoint *) <span class="keyword">const </span>= 0;
<a name="l00219"></a>00219     <span class="keyword">virtual</span> <span class="keywordtype">int</span>  get_IsClosed() <span class="keyword">const</span>;
<a name="l00220"></a>00220     <span class="keyword">virtual</span> <span class="keywordtype">void</span> Value( <span class="keywordtype">double</span>, OGRPoint * ) <span class="keyword">const </span>= 0;
<a name="l00221"></a>00221 
<a name="l00222"></a>00222 };
<a name="l00223"></a>00223 
<a name="l00224"></a>00224 <span class="comment">/************************************************************************/</span>
<a name="l00225"></a>00225 <span class="comment">/*                            OGRLineString                             */</span>
<a name="l00226"></a>00226 <span class="comment">/************************************************************************/</span>
<a name="l00227"></a>00227 
<a name="l00232"></a><a class="code" href="classOGRLineString.html">00232</a> <span class="keyword">class </span>CPL_DLL OGRLineString : <span class="keyword">public</span> OGRCurve
<a name="l00233"></a>00233 {
<a name="l00234"></a>00234   <span class="keyword">protected</span>:
<a name="l00235"></a>00235     <span class="keywordtype">int</span>         nPointCount;
<a name="l00236"></a>00236     <a class="code" href="classOGRRawPoint.html">OGRRawPoint</a> *paoPoints;
<a name="l00237"></a>00237     <span class="keywordtype">double</span>      *padfZ;
<a name="l00238"></a>00238 
<a name="l00239"></a>00239     <span class="keywordtype">void</span>        Make3D();
<a name="l00240"></a>00240     <span class="keywordtype">void</span>        Make2D();
<a name="l00241"></a>00241 
<a name="l00242"></a>00242   <span class="keyword">public</span>:
<a name="l00243"></a>00243                 OGRLineString();
<a name="l00244"></a>00244     <span class="keyword">virtual</span>     ~OGRLineString();
<a name="l00245"></a>00245 
<a name="l00246"></a>00246     <span class="comment">// IWks Interface</span>
<a name="l00247"></a>00247     <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classOGRGeometry.html#68215bd90d675b7627a798b162c54ab1">WkbSize</a>() <span class="keyword">const</span>;
<a name="l00248"></a>00248     <span class="keyword">virtual</span> OGRErr <a class="code" href="classOGRGeometry.html#b2c6583c2b7c3e526dcfe54a61470c1f">importFromWkb</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">int</span> = -1 );
<a name="l00249"></a>00249     <span class="keyword">virtual</span> OGRErr <a class="code" href="classOGRGeometry.html#6fe8947602669a35136e107cd45b084d">exportToWkb</a>( OGRwkbByteOrder, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> * ) <span class="keyword">const</span>;
<a name="l00250"></a>00250     <span class="keyword">virtual</span> OGRErr <a class="code" href="classOGRGeometry.html#30561a301d44b1f90393ea4a78a5b0a5">importFromWkt</a>( <span class="keywordtype">char</span> ** );
<a name="l00251"></a>00251     <span class="keyword">virtual</span> OGRErr <a class="code" href="classOGRGeometry.html#71184265101d21cffa5c50ee79afdd61">exportToWkt</a>( <span class="keywordtype">char</span> ** ppszDstText ) <span class="keyword">const</span>;
<a name="l00252"></a>00252 
<a name="l00253"></a>00253     <span class="comment">// IGeometry interface</span>
<a name="l00254"></a>00254     <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classOGRGeometry.html#266c427f00ea35fdc503393c210a115d">getDimension</a>() <span class="keyword">const</span>;
<a name="l00255"></a>00255     <span class="keyword">virtual</span> <a class="code" href="classOGRGeometry.html">OGRGeometry</a> *<a class="code" href="classOGRGeometry.html#f2fe60f2bde104cb3eef16475f3f3cd8">clone</a>() <span class="keyword">const</span>;
<a name="l00256"></a>00256     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRGeometry.html#1702b5b8142abe761061a6cd44e50b05">empty</a>();
<a name="l00257"></a>00257     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRGeometry.html#a3d42b06ae6f7bbef6d1a2886da8d398">getEnvelope</a>( <a class="code" href="classOGREnvelope.html">OGREnvelope</a> * psEnvelope ) <span class="keyword">const</span>;
<a name="l00258"></a>00258 
<a name="l00259"></a>00259     <span class="comment">// ICurve methods</span>
<a name="l00260"></a>00260     <span class="keyword">virtual</span> <span class="keywordtype">double</span> <a class="code" href="classOGRCurve.html#1eab84f4cae72cab2f861d8e72fc71a6">get_Length</a>() <span class="keyword">const</span>;
<a name="l00261"></a>00261     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRCurve.html#28510cf9de71e098b50d241f6ab99cd1">StartPoint</a>(OGRPoint *) <span class="keyword">const</span>;
<a name="l00262"></a>00262     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRCurve.html#2e9e8e178c7e70efdecd1c50d95d537e">EndPoint</a>(OGRPoint *) <span class="keyword">const</span>;
<a name="l00263"></a>00263     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRCurve.html#c96e6d31c407cddc03cc1af9b99e486e">Value</a>( <span class="keywordtype">double</span>, OGRPoint * ) <span class="keyword">const</span>;
<a name="l00264"></a>00264     
<a name="l00265"></a>00265     <span class="comment">// ILineString methods</span>
<a name="l00266"></a><a class="code" href="classOGRLineString.html#d2f41c1c69feaea512d561cf16a0e4a3">00266</a>     <span class="keywordtype">int</span>         getNumPoints()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nPointCount; }
<a name="l00267"></a>00267     <span class="keywordtype">void</span>        getPoint( <span class="keywordtype">int</span>, OGRPoint * ) <span class="keyword">const</span>;
<a name="l00268"></a><a class="code" href="classOGRLineString.html#a4c8c1c903bca56f64bc5856f42b2e5c">00268</a>     <span class="keywordtype">double</span>      getX( <span class="keywordtype">int</span> i )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> paoPoints[i].x; }
<a name="l00269"></a><a class="code" href="classOGRLineString.html#be55ebb3fc3c9491eb937d2c5c240771">00269</a>     <span class="keywordtype">double</span>      getY( <span class="keywordtype">int</span> i )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> paoPoints[i].y; }
<a name="l00270"></a>00270     <span class="keywordtype">double</span>      getZ( <span class="keywordtype">int</span> i ) <span class="keyword">const</span>;
<a name="l00271"></a>00271 
<a name="l00272"></a>00272     <span class="comment">// ISpatialRelation</span>
<a name="l00273"></a>00273     <span class="keyword">virtual</span> OGRBoolean  <a class="code" href="classOGRGeometry.html#e751513a46c7e7b154796bfe494faf16">Equals</a>( <a class="code" href="classOGRGeometry.html">OGRGeometry</a> * ) <span class="keyword">const</span>;
<a name="l00274"></a>00274     
<a name="l00275"></a>00275     <span class="comment">// non standard.</span>
<a name="l00276"></a>00276     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRGeometry.html#79f84a2b948d511f28c47c47577dea49">setCoordinateDimension</a>( <span class="keywordtype">int</span> nDimension ); 
<a name="l00277"></a>00277     <span class="keywordtype">void</span>        setNumPoints( <span class="keywordtype">int</span> );
<a name="l00278"></a>00278     <span class="keywordtype">void</span>        setPoint( <span class="keywordtype">int</span>, OGRPoint * );
<a name="l00279"></a>00279     <span class="keywordtype">void</span>        setPoint( <span class="keywordtype">int</span>, <span class="keywordtype">double</span>, <span class="keywordtype">double</span> );
<a name="l00280"></a>00280     <span class="keywordtype">void</span>        setPoint( <span class="keywordtype">int</span>, <span class="keywordtype">double</span>, <span class="keywordtype">double</span>, <span class="keywordtype">double</span> );
<a name="l00281"></a>00281     <span class="keywordtype">void</span>        setPoints( <span class="keywordtype">int</span>, <a class="code" href="classOGRRawPoint.html">OGRRawPoint</a> *, <span class="keywordtype">double</span> * = NULL );
<a name="l00282"></a>00282     <span class="keywordtype">void</span>        setPoints( <span class="keywordtype">int</span>, <span class="keywordtype">double</span> * padfX, <span class="keywordtype">double</span> * padfY,
<a name="l00283"></a>00283                            <span class="keywordtype">double</span> *padfZ = NULL );
<a name="l00284"></a>00284     <span class="keywordtype">void</span>        addPoint( OGRPoint * );
<a name="l00285"></a>00285     <span class="keywordtype">void</span>        addPoint( <span class="keywordtype">double</span>, <span class="keywordtype">double</span> );
<a name="l00286"></a>00286     <span class="keywordtype">void</span>        addPoint( <span class="keywordtype">double</span>, <span class="keywordtype">double</span>, <span class="keywordtype">double</span> );
<a name="l00287"></a>00287 
<a name="l00288"></a>00288     <span class="keywordtype">void</span>        getPoints( <a class="code" href="classOGRRawPoint.html">OGRRawPoint</a> *, <span class="keywordtype">double</span> * = NULL ) <span class="keyword">const</span>;
<a name="l00289"></a>00289 
<a name="l00290"></a>00290     <span class="keywordtype">void</span>        addSubLineString( <span class="keyword">const</span> OGRLineString *, 
<a name="l00291"></a>00291                                   <span class="keywordtype">int</span> nStartVertex = 0, <span class="keywordtype">int</span> nEndVertex = -1 );
<a name="l00292"></a>00292 
<a name="l00293"></a>00293     <span class="comment">// non-standard from OGRGeometry</span>
<a name="l00294"></a>00294     <span class="keyword">virtual</span> OGRwkbGeometryType <a class="code" href="classOGRGeometry.html#26fef0fc5e95c9e8e526922476c778bd">getGeometryType</a>() <span class="keyword">const</span>;
<a name="l00295"></a>00295     <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="classOGRGeometry.html#b9c97ddc4876f1aa563cc4c075bfb251">getGeometryName</a>() <span class="keyword">const</span>;
<a name="l00296"></a>00296     <span class="keyword">virtual</span> OGRErr  <a class="code" href="classOGRGeometry.html#a9e8bfb3c2129f25cf622660f734e1ba">transform</a>( <a class="code" href="classOGRCoordinateTransformation.html">OGRCoordinateTransformation</a> *poCT );
<a name="l00297"></a>00297     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOGRGeometry.html#aae1a2ced937a5900b2bfeb717bad6c9">flattenTo2D</a>();
<a name="l00298"></a>00298 
<a name="l00299"></a>00299 };
<a name="l00300"></a>00300 
<a name="l00301"></a>00301 <span class="comment">/************************************************************************/</span>
<a name="l00302"></a>00302 <span class="comment">/*                            OGRLinearRing                             */</span>
<a name="l00303"></a>00303 <span class="comment">/*                                                                      */</span>
<a name="l00304"></a>00304 <span class="comment">/*      This is an alias for OGRLineString for now.                     */</span>
<a name="l00305"></a>00305 <span class="comment">/************************************************************************/</span>
<a name="l00306"></a>00306 
<a name="l00315"></a><a class="code" href="classOGRLinearRing.html">00315</a> <span class="keyword">class </span>CPL_DLL OGRLinearRing : <span class="keyword">public</span> OGRLineString
<a name="l00316"></a>00316 {
<a name="l00317"></a>00317   <span class="keyword">private</span>:
<a name="l00318"></a>00318     <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classOGRPolygon.html">OGRPolygon</a>; 
<a name="l00319"></a>00319     
<a name="l00320"></a>00320     <span class="comment">// These are not IWks compatible ... just a convenience for OGRPolygon.</span>
<a name="l00321"></a>00321     <span class="keyword">virtual</span> <span class="keywordtype">int</span> _WkbSize( <span class="keywordtype">int</span> b3D ) <span class="keyword">const</span>;
<a name="l00322"></a>00322     <span class="keyword">virtual</span> OGRErr _importFromWkb( OGRwkbByteOrder, <span class="keywordtype">int</span> b3D,
<a name="l00323"></a>00323                                    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">int</span>=-1 );