PostGIS  2.3.8dev-r@@SVN_REVISION@@

◆ lwcompound_to_wkt_sb()

static void lwcompound_to_wkt_sb ( const LWCOMPOUND comp,
stringbuffer_t sb,
int  precision,
uint8_t  variant 
)
static

Definition at line 306 of file lwout_wkt.c.

References CIRCSTRINGTYPE, dimension_qualifiers_to_wkt_sb(), empty_to_wkt_sb(), LWCOMPOUND::geoms, LINETYPE, lwcircstring_to_wkt_sb(), lwerror(), lwline_to_wkt_sb(), lwtype_name(), LWCOMPOUND::ngeoms, stringbuffer_append(), ovdump::type, LWGEOM::type, WKT_IS_CHILD, and WKT_NO_TYPE.

Referenced by lwcurvepoly_to_wkt_sb(), lwgeom_to_wkt_sb(), and lwmcurve_to_wkt_sb().

307 {
308  int i = 0;
309 
310  if ( ! (variant & WKT_NO_TYPE) )
311  {
312  stringbuffer_append(sb, "COMPOUNDCURVE"); /* "COMPOUNDCURVE" */
314  }
315  if ( comp->ngeoms < 1 )
316  {
317  empty_to_wkt_sb(sb);
318  return;
319  }
320 
321  stringbuffer_append(sb, "(");
322  variant = variant | WKT_IS_CHILD; /* Inform the sub-geometries they are childre */
323  for ( i = 0; i < comp->ngeoms; i++ )
324  {
325  int type = comp->geoms[i]->type;
326  if ( i > 0 )
327  stringbuffer_append(sb, ",");
328  /* Linestring subgeoms don't get type identifiers */
329  if ( type == LINETYPE )
330  {
331  lwline_to_wkt_sb((LWLINE*)comp->geoms[i], sb, precision, variant | WKT_NO_TYPE );
332  }
333  /* But circstring subgeoms *do* get type identifiers */
334  else if ( type == CIRCSTRINGTYPE )
335  {
337  }
338  else
339  {
340  lwerror("lwcompound_to_wkt_sb: Unknown type received %d - %s", type, lwtype_name(type));
341  }
342  }
343  stringbuffer_append(sb, ")");
344 }
#define LINETYPE
Definition: liblwgeom.h:85
uint8_t variant
Definition: cu_in_twkb.c:26
static void dimension_qualifiers_to_wkt_sb(const LWGEOM *geom, stringbuffer_t *sb, uint8_t variant)
Definition: lwout_wkt.c:39
static void lwcircstring_to_wkt_sb(const LWCIRCSTRING *circ, stringbuffer_t *sb, int precision, uint8_t variant)
Definition: lwout_wkt.c:196
LWGEOM ** geoms
Definition: liblwgeom.h:521
const char * lwtype_name(uint8_t type)
Return the type name string associated with a type number (e.g.
Definition: lwutil.c:216
#define WKT_IS_CHILD
uint8_t precision
Definition: cu_in_twkb.c:25
#define WKT_NO_TYPE
Well-Known Text (WKT) Output Variant Types.
static void empty_to_wkt_sb(stringbuffer_t *sb)
Definition: lwout_wkt.c:69
void stringbuffer_append(stringbuffer_t *s, const char *a)
Append the specified string to the stringbuffer_t.
Definition: stringbuffer.c:134
int ngeoms
Definition: liblwgeom.h:519
uint8_t type
Definition: liblwgeom.h:395
type
Definition: ovdump.py:41
#define CIRCSTRINGTYPE
Definition: liblwgeom.h:91
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:102
static void lwline_to_wkt_sb(const LWLINE *line, stringbuffer_t *sb, int precision, uint8_t variant)
Definition: lwout_wkt.c:150
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