private void SearchAsync(IEnumerable <LayerInfo> layerInfos, SearchRegion region, MultiDimensionalObjectRelationship relationship)
{
btnSearch.Enabled = false;
btnSearch.Text = @"Searching...";
var searchWorker = new BackgroundWorker();
searchWorker.DoWork += SearchWorker_DoWork;
searchWorker.RunWorkerCompleted += SearchWorker_RunWorkerCompleted;
_timer.Restart();
searchWorker.RunWorkerAsync(Tuple.Create(layerInfos, region, relationship, rdoSearchByGeom.Checked));
}
private static FeatureSet SpatialSearch <TMdo, TVal>(JoobRTree <TMdo, TVal> rtree, string name, FeatureType type, SearchRegion region, MultiDimensionalObjectRelationship relationship, out long searchTime)
where TMdo : JoobObject, IMultiDimensionalObject
where TVal : JoobObject
{
if (rtree.Count > 0)
{
var projection = ProjectionInfo.FromProj4String(SRID_WGS84);
projection.Transform = new Transform();
var featureSet = new FeatureSet(type)
{
Name = name,
Projection = projection
};
var watch = new Stopwatch();
watch.Start();
var result = region == null
? rtree.Where(item => item as ObjectWithSpatialInfo != null).Cast <ObjectWithSpatialInfo>().Select(item => item.Geom).ToList()
: rtree.Search(region.Envelope as TMdo, relationship).Select(item => item.Key as JoobGeometry).ToList();
watch.Stop();
searchTime = watch.ElapsedMilliseconds;
PopulateFeatureSet(result, featureSet);
return(featureSet);
}
searchTime = 0;
return(null);
}
private static FeatureSet SpatialSearchOtherSpatialLayers(string layerName, SearchRegion region, MultiDimensionalObjectRelationship relationship, out long searchTime)
{
var layer = TheRoot.OtherSpatialLayers[layerName];
if (layer != null)
{
var projection = ProjectionInfo.FromProj4String(SRID_None);
projection.Transform = new Transform();
var featureSet = new FeatureSet(FeatureType.Unspecified)
{
Name = layerName,
Projection = projection
};
var watch = new Stopwatch();
watch.Start();
var result = region == null?layer.Geometries.Cast <JoobGeometry>().ToList()
: layer.Geometries.Search(region.Envelope, relationship).Select(item => item.Key);
watch.Stop();
searchTime = watch.ElapsedMilliseconds;
PopulateFeatureSet(result, featureSet);
return(featureSet);
}
searchTime = 0;
return(null);
}
public static IEnumerable <FeatureSet> SpatialSearch(IEnumerable <LayerInfo> layerInfos, SearchRegion region, MultiDimensionalObjectRelationship relationship, out long totalSearchTime)
{
totalSearchTime = 0;
var result = new List <FeatureSet>();
foreach (var info in layerInfos)
{
long searchTime;
if (info.Name.Equals(FeatureTypeStates, StringComparison.OrdinalIgnoreCase))
{
var featureSet = SpatialSearch(TheRoot.AllStatesByGeom, info.Name, FeatureType.Polygon, region, relationship, out searchTime);
if (featureSet != null)
{
result.Add(featureSet);
}
}
else if (info.Name.Equals(FeatureTypeCounties, StringComparison.OrdinalIgnoreCase))
{
var featureSet = SpatialSearch(TheRoot.AllCountiesByGeom, info.Name, FeatureType.Polygon, region, relationship, out searchTime);
if (featureSet != null)
{
result.Add(featureSet);
}
}
else if (info.Name.Equals(FeatureTypeCities, StringComparison.OrdinalIgnoreCase))
{
var featureSet = SpatialSearch(TheRoot.AllCitiesByGeom, info.Name, FeatureType.Point, region, relationship, out searchTime);
if (featureSet != null)
{
result.Add(featureSet);
}
}
else
{
var layer = SpatialSearchOtherSpatialLayers(info.Name, region, relationship, out searchTime);
if (layer != null)
{
result.Add(layer);
}
}
totalSearchTime += searchTime;
}
return(result);
}
