[mapguide-users] Mapguide WKT standards?

[Firenter]

Allright it seems I've found a workaround by reading out the coordinates of
these CurvePolygons and then converting those into normal Polygons.
If I ever run into other CurveThings I'll just add them to it then :P

Thanks for setting me on this path, didn't know how to convert geometries
that came in bytes to MgGeometries and now I do! Which is what led me to
finding out that you can just get the coordinates of anything.

Here's the C# code I used:

        private string GetGeometryFromBytes(MgByteReader geometry)
        {
            MgAgfReaderWriter agfReadWrite = new MgAgfReaderWriter();

            MgGeometry geom = agfReadWrite.Read(geometry);
            
            int geometryType = geom.GetGeometryType();

            MgGeometryFactory gf = new MgGeometryFactory();

            //CurvePolygons don't generate standard WKT convert them to
regular polygons
            if (geometryType == MgGeometryType.CurvePolygon)
            {
                MgCurvePolygon cp = (MgCurvePolygon)geom;

                geom = CreatePolygonFromCurvePolygon(cp, gf);
            }else if(geometryType == MgGeometryType.MultiCurvePolygon)
            {
                MgMultiCurvePolygon mcp = (MgMultiCurvePolygon)geom;

                geom = CreateMultiPolygonFromMultiCurvePolygon(mcp, gf);
            }

            //TODO: Other CurveThings

            MgWktReaderWriter wktReadWrite = new MgWktReaderWriter();

            string wktGeom = wktReadWrite.Write(geom);

            return wktGeom;
        }

        private MgPolygon CreatePolygonFromCurvePolygon(MgCurvePolygon cp,
MgGeometryFactory gf)
        {
            MgCoordinateIterator cpCoords = cp.Coordinates;

            MgCoordinateCollection coordCollection = new
MgCoordinateCollection();
            while (cpCoords.MoveNext())
            {
                coordCollection.Add(cpCoords.GetCurrent());
            }

            MgLinearRing ring = gf.CreateLinearRing(coordCollection);

            return gf.CreatePolygon(ring, null);
        }

        private MgMultiPolygon
CreateMultiPolygonFromMultiCurvePolygon(MgMultiCurvePolygon mcp,
MgGeometryFactory gf)
        {
            MgPolygonCollection pc = new MgPolygonCollection();

            int polygonCount = mcp.GetCount();

            for (int i = 0; i < polygonCount; i++)
            {
                MgCurvePolygon cp = mcp.GetCurvePolygon(i);

               pc.Add(CreatePolygonFromCurvePolygon(cp, gf));
            }

            return gf.CreateMultiPolygon(pc);
        }



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