PostGIS  2.3.7dev-r@@SVN_REVISION@@
static int lwpolygon_calculate_gbox_geodetic ( const LWPOLY poly,
GBOX gbox 
)
static

Definition at line 2554 of file lwgeodetic.c.

References GBOX::flags, gbox_check_poles(), gbox_duplicate(), gbox_merge(), LW_FAILURE, LW_FALSE, LW_SUCCESS, LW_TRUE, LWPOLY::nrings, ptarray_calculate_gbox_geodetic(), and LWPOLY::rings.

Referenced by lwgeom_calculate_gbox_geodetic().

2555 {
2556  GBOX ringbox;
2557  int i;
2558  int first = LW_TRUE;
2559  assert(poly);
2560  if ( poly->nrings == 0 )
2561  return LW_FAILURE;
2562  ringbox.flags = gbox->flags;
2563  for ( i = 0; i < poly->nrings; i++ )
2564  {
2565  if ( ptarray_calculate_gbox_geodetic(poly->rings[i], &ringbox) == LW_FAILURE )
2566  return LW_FAILURE;
2567  if ( first )
2568  {
2569  gbox_duplicate(&ringbox, gbox);
2570  first = LW_FALSE;
2571  }
2572  else
2573  {
2574  gbox_merge(&ringbox, gbox);
2575  }
2576  }
2577 
2578  /* If the box wraps a poly, push that axis to the absolute min/max as appropriate */
2579  gbox_check_poles(gbox);
2580 
2581  return LW_SUCCESS;
2582 }
void gbox_duplicate(const GBOX *original, GBOX *duplicate)
Copy the values of original GBOX into duplicate.
Definition: g_box.c:445
#define LW_SUCCESS
Definition: liblwgeom.h:79
int gbox_merge(const GBOX *new_box, GBOX *merge_box)
Update the merged GBOX to be large enough to include itself and the new box.
Definition: g_box.c:269
#define LW_FAILURE
Definition: liblwgeom.h:78
#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
int ptarray_calculate_gbox_geodetic(const POINTARRAY *pa, GBOX *gbox)
Calculate geodetic (x/y/z) box and add values to gbox.
Definition: lwgeodetic.c:2487
uint8_t flags
Definition: liblwgeom.h:290
static int gbox_check_poles(GBOX *gbox)
Check to see if this geocentric gbox is wrapped around a pole.
Definition: lwgeodetic.c:307

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