collectFacesWithEvenAncestors()

static GEOSGeometry* collectFacesWithEvenAncestors ( Face **  faces, int  nfaces  )

static

Definition at line 1233 of file liblwgeom/lwgeom_geos.c.

References countParens(), Face_t::geom, lwalloc(), and lwfree().

Referenced by LWGEOM_GEOS_buildArea().

{
  GEOSGeometry **geoms = lwalloc(sizeof(GEOSGeometry*)*nfaces);
  GEOSGeometry *ret;
  unsigned int ngeoms = 0;
  int i;

  for (i=0; i<nfaces; ++i) {
    Face *f = faces[i];
    if ( countParens(f) % 2 ) continue; /* we skip odd parents geoms */
    geoms[ngeoms++] = GEOSGeom_clone(f->geom);
  }

  ret = GEOSGeom_createCollection(GEOS_MULTIPOLYGON, geoms, ngeoms);
  lwfree(geoms);
  return ret;
}

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