[geos-devel] [GEOS] #243: a question about the conversion from Geometry* to Polygon*

[GEOS]

#243: a question about the conversion from Geometry* to Polygon*
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 Reporter:  aya          |       Owner:  geos-devel at lists.osgeo.org     
     Type:  enhancement  |      Status:  new                            
 Priority:  major        |   Milestone:  3.1.1                          
Component:  Default      |     Version:  3.1.0rc2                       
 Severity:  Unassigned   |    Keywords:  conversion, Geometry*, Polygon*
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 I use the following function to get the intersection of two polygons which
 have holes and the value returned is Geometry *.

 geos::precision::EnhancedPrecisionOp:: intersection(Poly_A,Poly_B);

 If getGeometryTypeId() tells me the geometry returned is a polygon, how
 can I get a pointer Polygon * from Geometry * safely ? If I convert it
 directly, is it always safe ?

 Thanks.

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Ticket URL: <http://trac.osgeo.org/geos/ticket/243>
GEOS <http://geos.refractions.net/>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).