projection_gk.c File Reference

Implementation of the Gauss-Krueger projection used in Secondo. More...

#include <math.h>
#include <postgres.h>
#include <liblwgeom.h>
#include <meos.h>
#include <meos_internal.h>
#include <meos_internal_geo.h>
#include "temporal/lifting.h"
#include "geo/tgeo_spatialfuncs.h"
#include "pg_geo/postgis.h"

Functions
static POINT2D	BesselBLToGaussKrueger (double b, double ll)
	Transform to Gauss-Krueger projection. More...
static POINT3D	BLRauenberg (double x, double y, double z)
GSERIALIZED *	geometry_transform_gk (const GSERIALIZED *gs)
	Transform a geometry into the Gauss-Kruger projection used in Secondo. More...
Datum	Geometry_transform_gk (PG_FUNCTION_ARGS)
	Transform a geometry into the Gauss-Krueger projection used in Secondo. More...
static Datum	gk (Datum point)
	Transform a point into the Gauss-Kruger projection used in Secondo. More...
static POINT3D	HelmertTransformation (double x, double y, double z)
	Perform Helmert Transformation. More...
static double	newF (double f, double x, double y, double p)
static Datum	point2d_get_datum (const POINT2D *p2d)
	Get Datum from 2D point. More...
Temporal *	tgeompoint_transform_gk (const Temporal *temp)
	Transform a temporal point into the Gauss-Krueger projection used in Secondo. More...
Datum	Tgeompoint_transform_gk (PG_FUNCTION_ARGS)
	Transform a temporal point into the Gauss-Krueger projection used in Secondo. More...

Variables
double	abes = 6377397.155
double	awgs = 6378137.0
double	bbes = 6356078.962
double	bwgs = 6356752.314
double	cbes = 111120.6196
double	dx = -585.7
double	dy = -87.0
double	dz = -409.2
double	eqbes = 0
double	eqwgs = 0
double	h1 = 0
double	MDC = 2.0
double	Pi = 3.1415926535897932384626433832795028841971693993751058209749445923078164
double	rotx = 2.540423689E-6
double	roty = 7.514612057E-7
double	rotz = -1.368144208E-5
double	sc = 0.99999122

Detailed Description

Implementation of the Gauss-Krueger projection used in Secondo.

Note

This projection does not correspond to any standard projection in http://www.epsg.org/. This projection is provided to enable the comparison of MobilityDB and Secondo.