PostGIS  2.5.0dev-r@@SVN_REVISION@@

◆ getFaceWithinBox2D

LWT_ISO_FACE*(* LWT_BE_CALLBACKS_T::getFaceWithinBox2D) (const LWT_BE_TOPOLOGY *topo, const GBOX *box, int *numelems, int fields, int limit)

Get faces whose bounding box overlaps a given 2D bounding box.

topothe topology to act upon
boxthe query box
numelemsoutput parameter, gets number of elements found if the return is not null, otherwise see
section for semantic.
fieldsfields to be filled in the returned structure, see LWT_COL_FACE_* macros
limitmax number of faces to return, 0 for no limit, -1 to only check for existance if a matching row.
an array of faces or null in the following cases:
  • limit=-1 ("numelems" is set to 1 if found, 0 otherwise)
  • limit>0 and no records found ("numelems" is set to 0)
  • error ("numelems" is set to -1)

Definition at line 861 of file liblwgeom_topo.h.