PostGIS  2.5.7dev-r@@SVN_REVISION@@

◆ ptarray_flip_coordinates()

POINTARRAY* ptarray_flip_coordinates ( POINTARRAY pa)

Reverse X and Y axis on a given POINTARRAY.

Definition at line 368 of file ptarray.c.

369 {
370  uint32_t i;
371  double d;
372  POINT4D p;
374  for (i=0 ; i < pa->npoints ; i++)
375  {
376  getPoint4d_p(pa, i, &p);
377  d = p.y;
378  p.y = p.x;
379  p.x = d;
380  ptarray_set_point4d(pa, i, &p);
381  }
383  return pa;
384 }
int getPoint4d_p(const POINTARRAY *pa, uint32_t n, POINT4D *point)
Definition: lwgeom_api.c:123
void ptarray_set_point4d(POINTARRAY *pa, uint32_t n, const POINT4D *p4d)
Definition: lwgeom_api.c:435
double x
Definition: liblwgeom.h:355
double y
Definition: liblwgeom.h:355
uint32_t npoints
Definition: liblwgeom.h:374
unsigned int uint32_t
Definition: uthash.h:78

References getPoint4d_p(), POINTARRAY::npoints, ptarray_set_point4d(), POINT4D::x, and POINT4D::y.

Referenced by parse_gml_curve(), parse_gml_data(), parse_gml_line(), parse_gml_linearring(), parse_gml_patch(), parse_gml_point(), parse_gml_polygon(), and parse_gml_triangle().

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