[Gdal-dev] GEOS Integration

[Tyler Mitchell]

Right on, I've been looking forward to this.
Thanks.

gdal-dev-bounces at xserve.flids.com wrote on 07/11/2004 12:16:24 PM:

> Folks,
> 
> I have completed a preliminary integration of the GEOS simple features
> geometry operations library with the OGRGeometry class.  The OGRGeometry
> now has a variety of operators including:
> 
>      // ISpatialRelation
>      virtual OGRBoolean  Intersect( OGRGeometry * ) const;
>      virtual OGRBoolean  Equal( OGRGeometry * ) const = 0;
>      virtual OGRBoolean  Disjoint( const OGRGeometry * ) const;
>      virtual OGRBoolean  Touches( const OGRGeometry * ) const;
>      virtual OGRBoolean  Crosses( const OGRGeometry * ) const;
>      virtual OGRBoolean  Within( const OGRGeometry * ) const;
>      virtual OGRBoolean  Contains( const OGRGeometry * ) const;
>      virtual OGRBoolean  Overlaps( const OGRGeometry * ) const;
> //    virtual OGRBoolean  Relate( const OGRGeometry *, const char * ) 
const;
> 
>      virtual OGRGeometry *getBoundary() const;
>      virtual double  Distance( const OGRGeometry * ) const;
>      virtual OGRGeometry *ConvexHull() const;
>      virtual OGRGeometry *Buffer( double dfDist, int nQuadSegs = 30 ) 
const;
>      virtual OGRGeometry *Intersection( const OGRGeometry *) const;
>      virtual OGRGeometry *Union( const OGRGeometry * ) const;
>      virtual OGRGeometry *Difference( const OGRGeometry * ) const;
>      virtual OGRGeometry *SymmetricDifference( const OGRGeometry * ) 
const;
> 
> There are also methods to convert OGRGeometries to geos::geometry and 
back
> again.   Python bindings and documentation have been added for the 
> new methods.
> 
> There is currently no way to use the new operations from the commandline
> of any of the programs, but it is available to scripters and 
programmers.
> I have only used it on Linux.  No effort has been made to update the 
windows
> builds to support GEOS yet.
> 
> Best regards,
> -- 
> 
---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam, 
warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
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> 
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