PostGIS  2.5.1dev-r@@SVN_REVISION@@

◆ ptarray_is_closed_2d()

int ptarray_is_closed_2d ( const POINTARRAY pa)

Definition at line 695 of file ptarray.c.

References getPoint_internal(), lwerror(), and POINTARRAY::npoints.

Referenced by lwcircstring_is_closed(), lwline_is_closed(), lwpoly_from_lwlines(), lwpoly_from_twkb_state(), lwpoly_from_wkb_state(), lwpoly_is_closed(), lwtriangle_from_lwline(), parse_gml_linearring(), parse_gml_patch(), parse_gml_polygon(), parse_gml_triangle(), parse_kml_polygon(), ptarray_close2d(), ptarray_is_closed_z(), ptarray_to_GEOSCoordSeq(), and wkt_parser_polygon_add_ring().

696 {
697  if (!in)
698  {
699  lwerror("ptarray_is_closed_2d: called with null point array");
700  return 0;
701  }
702  if (in->npoints <= 1 ) return in->npoints; /* single-point are closed, empty not closed */
703 
704  return 0 == memcmp(getPoint_internal(in, 0), getPoint_internal(in, in->npoints-1), sizeof(POINT2D) );
705 }
uint8_t * getPoint_internal(const POINTARRAY *pa, uint32_t n)
Definition: ptarray.c:1750
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:190
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