abes awgs bbes BesselBLToGaussKrueger BLRauenberg bwgs cbes dx dy dz eqbes eqwgs geometry_transform_gk geometry_transform_gk_internal gk h1 HelmertTransformation MDC newF Pi point2d_get_datum rotx roty rotz sc tgeompoint_transform_gk

awgs double awgs = 6378137.0