PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ lwgeom_reverse_in_place()

void lwgeom_reverse_in_place ( LWGEOM geom)

Reverse vertex order of LWGEOM.

Definition at line 103 of file lwgeom.c.

104 {
105  uint32_t i;
106  LWCOLLECTION *col;
107  if (!geom)
108  return;
109 
110  switch (geom->type)
111  {
112  case MULTIPOINTTYPE:
113  case POINTTYPE:
114  {
115  return;
116  }
117  case TRIANGLETYPE:
118  case CIRCSTRINGTYPE:
119  case LINETYPE:
120  {
121  LWLINE *line = (LWLINE *)(geom);
123  return;
124  }
125  case POLYGONTYPE:
126  {
127  LWPOLY *poly = (LWPOLY *)(geom);
128  if (!poly->rings)
129  return;
130  uint32_t r;
131  for (r = 0; r < poly->nrings; r++)
133  return;
134  }
135  case MULTICURVETYPE:
136  case MULTILINETYPE:
137  case MULTIPOLYGONTYPE:
138  case MULTISURFACETYPE:
140  case TINTYPE:
141  case COLLECTIONTYPE:
142  case COMPOUNDTYPE:
143  case CURVEPOLYTYPE:
144  {
145  col = (LWCOLLECTION *)(geom);
146  if (!col->geoms)
147  return;
148  for (i=0; i<col->ngeoms; i++)
150  return;
151  }
152  default:
153  {
154  lwerror("%s: Unknown geometry type: %s", __func__, lwtype_name(geom->type));
155  return;
156  }
157 
158  }
159 }
char * r
Definition: cu_in_wkt.c:24
#define COLLECTIONTYPE
Definition: liblwgeom.h:122
#define COMPOUNDTYPE
Definition: liblwgeom.h:124
#define CURVEPOLYTYPE
Definition: liblwgeom.h:125
#define MULTILINETYPE
Definition: liblwgeom.h:120
#define MULTISURFACETYPE
Definition: liblwgeom.h:127
#define LINETYPE
Definition: liblwgeom.h:117
#define MULTIPOINTTYPE
Definition: liblwgeom.h:119
#define POINTTYPE
LWTYPE numbers, used internally by PostGIS.
Definition: liblwgeom.h:116
#define TINTYPE
Definition: liblwgeom.h:130
#define MULTIPOLYGONTYPE
Definition: liblwgeom.h:121
#define POLYGONTYPE
Definition: liblwgeom.h:118
#define POLYHEDRALSURFACETYPE
Definition: liblwgeom.h:128
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:123
const char * lwtype_name(uint8_t type)
Return the type name string associated with a type number (e.g.
Definition: lwutil.c:216
#define MULTICURVETYPE
Definition: liblwgeom.h:126
#define TRIANGLETYPE
Definition: liblwgeom.h:129
void ptarray_reverse_in_place(POINTARRAY *pa)
Definition: ptarray.c:339
void lwgeom_reverse_in_place(LWGEOM *geom)
Reverse vertex order of LWGEOM.
Definition: lwgeom.c:103
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:190
uint32_t ngeoms
Definition: liblwgeom.h:594
LWGEOM ** geoms
Definition: liblwgeom.h:589
uint8_t type
Definition: liblwgeom.h:476
POINTARRAY * points
Definition: liblwgeom.h:497
POINTARRAY ** rings
Definition: liblwgeom.h:533
uint32_t nrings
Definition: liblwgeom.h:538

References CIRCSTRINGTYPE, COLLECTIONTYPE, COMPOUNDTYPE, CURVEPOLYTYPE, LWCOLLECTION::geoms, LINETYPE, lwerror(), lwgeom_reverse_in_place(), lwtype_name(), MULTICURVETYPE, MULTILINETYPE, MULTIPOINTTYPE, MULTIPOLYGONTYPE, MULTISURFACETYPE, LWCOLLECTION::ngeoms, LWPOLY::nrings, LWLINE::points, POINTTYPE, POLYGONTYPE, POLYHEDRALSURFACETYPE, ptarray_reverse_in_place(), r, LWPOLY::rings, TINTYPE, TRIANGLETYPE, and LWGEOM::type.

Referenced by lwgeom_reverse(), LWGEOM_reverse(), lwgeom_reverse_in_place(), lwt_GetFaceEdges(), mvt_grid_and_validate_geos(), ST_IsPolygonCCW(), and test_lwcurve_linearize().

Here is the call graph for this function:
Here is the caller graph for this function: