PostGIS  2.3.7dev-r@@SVN_REVISION@@
int lwpoly_is_empty ( const LWPOLY poly)

Definition at line 403 of file lwpoly.c.

References LW_FALSE, LW_TRUE, POINTARRAY::npoints, LWPOLY::nrings, and LWPOLY::rings.

Referenced by asgml2_poly_buf(), asgml2_poly_size(), asgml3_poly_buf(), lwgeom_is_empty(), lwpoly_contains_point(), lwpoly_force_clockwise(), lwpoly_force_dims(), lwpoly_reverse(), lwpoly_set_effective_area(), lwpoly_simplify(), and lwpoly_to_wkt_sb().

404 {
405  if ( (poly->nrings < 1) || (!poly->rings) || (!poly->rings[0]) || (poly->rings[0]->npoints < 1) )
406  return LW_TRUE;
407  return LW_FALSE;
408 }
int npoints
Definition: liblwgeom.h:370
#define LW_FALSE
Definition: liblwgeom.h:76
#define LW_TRUE
Return types for functions with status returns.
Definition: liblwgeom.h:75
POINTARRAY ** rings
Definition: liblwgeom.h:456
int nrings
Definition: liblwgeom.h:454

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