Function msLayerWhichShapes

maplayer.c:133–141

** Performs a spatial, and optionally an attribute based feature search. The function basically ** prepares things so that candidate features can be accessed by query or drawing functions. For ** OGR and shapefiles this sets an internal bit vector that indicates whether a particular feature ** is to processed. For SDE it executes an SQL statement on the SDE server. Once run the msLayerNextShape **

** connection type where this is feasible.
*/
int msLayerWhichShapes(layerObj *layer, rectObj rect, int isQuery)
{
  if ( ! layer->vtable) {
      int rv =  msInitializeVirtualTable(layer);
      if (rv != MS_SUCCESS)
          return rv;
  }
  return layer->vtable->LayerWhichShapes(layer, rect, isQuery);
}

/*
** Called after msWhichShapes has been called to actually retrieve shapes within a given area