PostGIS  2.5.0dev-r@@SVN_REVISION@@
static LWGEOM* parse_gml_tin ( xmlNodePtr  xnode,
bool *  hasz,
int *  root_srid 
)
static

Parse GML Tin (and TriangulatedSurface) (3.1.1)

TODO handle also Tin attributes:

  • stopLines
  • breakLines
  • maxLength
  • position

Definition at line 1439 of file lwgeom_in_gml.c.

References get_xlink_node(), is_gml_namespace(), is_xlink(), lwcollection_construct_empty(), lwtin_add_lwtriangle(), parse_gml_srs(), parse_gml_triangle(), struct_gmlSrs::srid, SRID_UNKNOWN, and TINTYPE.

Referenced by parse_gml().

1440 {
1441  gmlSrs srs;
1442  xmlNodePtr xa;
1443  LWGEOM *geom=NULL;
1444  bool found=false;
1445 
1446  if (is_xlink(xnode)) xnode = get_xlink_node(xnode);
1447 
1448  parse_gml_srs(xnode, &srs);
1449  if (*root_srid == SRID_UNKNOWN && srs.srid != SRID_UNKNOWN)
1450  *root_srid = srs.srid;
1451 
1452  geom = (LWGEOM *)lwcollection_construct_empty(TINTYPE, *root_srid, 1, 0);
1453 
1454  if (xnode->children == NULL)
1455  return geom;
1456 
1457  /* Looking for gml:patches or gml:trianglePatches */
1458  for (xa = xnode->children ; xa != NULL ; xa = xa->next)
1459  {
1460  if (xa->type != XML_ELEMENT_NODE) continue;
1461  if (!is_gml_namespace(xa, false)) continue;
1462  if (!strcmp((char *) xa->name, "patches") ||
1463  !strcmp((char *) xa->name, "trianglePatches"))
1464  {
1465  found = true;
1466  break;
1467  }
1468  }
1469  if (!found) return geom; /* empty one */
1470 
1471  /* Processing each gml:Triangle */
1472  for (xa = xa->children ; xa != NULL ; xa = xa->next)
1473  {
1474  if (xa->type != XML_ELEMENT_NODE) continue;
1475  if (!is_gml_namespace(xa, false)) continue;
1476  if (strcmp((char *) xa->name, "Triangle")) continue;
1477 
1478  if (xa->children != NULL)
1479  geom = (LWGEOM*) lwtin_add_lwtriangle((LWTIN *) geom,
1480  (LWTRIANGLE *) parse_gml_triangle(xa, hasz, root_srid));
1481  }
1482 
1483  return geom;
1484 }
static LWGEOM * parse_gml_triangle(xmlNodePtr xnode, bool *hasz, int *root_srid)
Parse GML Triangle (3.1.1)
LWTIN * lwtin_add_lwtriangle(LWTIN *mobj, const LWTRIANGLE *obj)
Definition: lwtin.c:34
static void parse_gml_srs(xmlNodePtr xnode, gmlSrs *srs)
Parse gml srsName attribute.
static xmlNodePtr get_xlink_node(xmlNodePtr xnode)
Return a xmlNodePtr on a node referenced by a XLink or NULL otherwise.
#define SRID_UNKNOWN
Unknown SRID value.
Definition: liblwgeom.h:187
#define TINTYPE
Definition: liblwgeom.h:98
static bool is_xlink(xmlNodePtr node)
Return true if current node contains a simple XLink Return false otherwise.
static bool is_gml_namespace(xmlNodePtr xnode, bool is_strict)
Return false if current element namespace is not a GML one Return true otherwise. ...
LWCOLLECTION * lwcollection_construct_empty(uint8_t type, int srid, char hasz, char hasm)
Definition: lwcollection.c:94

Here is the call graph for this function:

Here is the caller graph for this function: