[geos-devel] a question about the conversion from Geometry* to Polygon*

[南野秀一 南野秀一]

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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