69 lines
4.4 KiB
HTML
69 lines
4.4 KiB
HTML
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<div id="projectname">GEOS
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 <span id="projectnumber">3.9.1dev</span>
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<div class="title">C++ interface </div> </div>
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<div class="textblock"><h1><a class="anchor" id="overview_cpp"></a>
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Overview</h1>
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<p>Main class is <a class="el" href="classgeos_1_1geom_1_1Geometry.html" title="Basic implementation of Geometry, constructed and destructed by GeometryFactory. ">geos::geom::Geometry</a>, from which all geometry types derive.</p>
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<p>Construction and destruction of Geometries is done using <a class="el" href="classgeos_1_1geom_1_1GeometryFactory.html" title="Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geom...">geos::geom::GeometryFactory</a>.</p>
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<p>You'll feed it <a class="el" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry. ">geos::geom::CoordinateSequence</a> for base geometries or vectors of geometries for collections.</p>
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<p>If you need to construct geometric shaped geometries, you can use geos::geom::GeometricShapeFactory.</p>
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<p>GEOS version info (as a string) can be obtained using <a class="el" href="namespacegeos_1_1geom.html#acdb90e29e8ba4eeeb5860f2bb0bb9b0f" title="Return current GEOS version. ">geos::geom::geosversion()</a>. The JTS version this release has been ported from is available throu <a class="el" href="namespacegeos_1_1geom.html#ac0f658bdb01fb543cd247febca7ab10c" title="Return the version of JTS this GEOS release has been ported from. ">geos::geom::jtsport()</a>.</p>
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<h1><a class="anchor" id="io_sect"></a>
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Input / Output</h1>
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<p>For WKT input/output you can use <a class="el" href="classgeos_1_1io_1_1WKTReader.html" title="WKT parser class; see also WKTWriter. ">geos::io::WKTReader</a> and <a class="el" href="classgeos_1_1io_1_1WKTWriter.html" title="Outputs the textual representation of a Geometry. See also WKTReader. ">geos::io::WKTWriter</a></p>
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<p>For WKB input/output you can use <a class="el" href="classgeos_1_1io_1_1WKBReader.html" title="Reads a Geometry from Well-Known Binary format. ">geos::io::WKBReader</a> and <a class="el" href="classgeos_1_1io_1_1WKBWriter.html" title="Writes a Geometry into Well-Known Binary format. ">geos::io::WKBWriter</a></p>
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<h1><a class="anchor" id="exc_sect"></a>
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Exceptions</h1>
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<p>Internal exceptions are thrown as instances <a class="el" href="classgeos_1_1util_1_1GEOSException.html" title="Base class for all GEOS exceptions. ">geos::util::GEOSException</a> or derived classes. GEOSException derives from std::exception.</p>
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<p>Note that prior to version 3.0.0, GEOSException were thrown by pointer, and did not derive from std::exception. </p>
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