PostGIS 3.0.6dev-r@@SVN_REVISION@@
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◆ parse_gml_point()

static LWGEOM * parse_gml_point ( xmlNodePtr  xnode,
bool *  hasz,
int *  root_srid 
)
static

Parse GML point (2.1.2, 3.1.1)

Definition at line 1008 of file lwgeom_in_gml.c.

1009{
1010 gmlSrs srs;
1011 LWGEOM *geom;
1012 POINTARRAY *pa;
1013
1014 if (is_xlink(xnode)) xnode = get_xlink_node(xnode);
1015
1016 if (xnode->children == NULL)
1017 return lwpoint_as_lwgeom(lwpoint_construct_empty(*root_srid, 0, 0));
1018
1019 pa = parse_gml_data(xnode->children, hasz, root_srid);
1020 if (pa->npoints != 1) gml_lwpgerror("invalid GML representation", 34);
1021
1022 parse_gml_srs(xnode, &srs);
1023 if (srs.reverse_axis) pa = ptarray_flip_coordinates(pa);
1024 if (!*root_srid)
1025 {
1026 *root_srid = srs.srid;
1027 geom = (LWGEOM *) lwpoint_construct(*root_srid, NULL, pa);
1028 }
1029 else
1030 {
1031 if (srs.srid != *root_srid)
1032 gml_reproject_pa(pa, srs.srid, *root_srid);
1033 geom = (LWGEOM *) lwpoint_construct(SRID_UNKNOWN, NULL, pa);
1034 }
1035
1036 return geom;
1037}
LWGEOM * lwpoint_as_lwgeom(const LWPOINT *obj)
Definition lwgeom.c:326
LWPOINT * lwpoint_construct(int32_t srid, GBOX *bbox, POINTARRAY *point)
Definition lwpoint.c:129
POINTARRAY * ptarray_flip_coordinates(POINTARRAY *pa)
Reverse X and Y axis on a given POINTARRAY.
Definition ptarray.c:368
LWPOINT * lwpoint_construct_empty(int32_t srid, char hasz, char hasm)
Definition lwpoint.c:151
#define SRID_UNKNOWN
Unknown SRID value.
Definition liblwgeom.h:229
static xmlNodePtr get_xlink_node(xmlNodePtr xnode)
Return a xmlNodePtr on a node referenced by a XLink or NULL otherwise.
static bool is_xlink(xmlNodePtr node)
Return true if current node contains a simple XLink Return false otherwise.
static POINTARRAY * gml_reproject_pa(POINTARRAY *pa, int32_t epsg_in, int32_t epsg_out)
Use Proj to reproject a given POINTARRAY.
static void parse_gml_srs(xmlNodePtr xnode, gmlSrs *srs)
Parse gml srsName attribute.
static void gml_lwpgerror(char *msg, __attribute__((__unused__)) int error_code)
static POINTARRAY * parse_gml_data(xmlNodePtr xnode, bool *hasz, int *root_srid)
Parse data coordinates.
uint32_t npoints
Definition liblwgeom.h:413

References get_xlink_node(), gml_lwpgerror(), gml_reproject_pa(), is_xlink(), lwpoint_as_lwgeom(), lwpoint_construct(), lwpoint_construct_empty(), POINTARRAY::npoints, parse_gml_data(), parse_gml_srs(), ptarray_flip_coordinates(), struct_gmlSrs::reverse_axis, struct_gmlSrs::srid, and SRID_UNKNOWN.

Referenced by parse_gml().

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