public virtual IEnumerable <IFeature> GetFeaturesInView(BoundingBox box, double resolution)
{
if (box == null)
{
throw new ArgumentNullException("box");
}
lock (_syncRoot)
{
var features = Features.ToList();
// Use a larger extent so that symbols partially outside of the extent are included
var grownBox = box.Grow(resolution * SymbolSize * 0.5);
foreach (var feature in features)
{
if (feature.Geometry == null)
{
continue;
}
var boundingBox = feature.Geometry.GetBoundingBox();
if (boundingBox != null && grownBox.Intersects(boundingBox))
{
yield return(feature);
}
}
}
}
public virtual IEnumerable <IFeature> GetFeaturesInView(BoundingBox box, double resolution)
{
if (box == null)
{
throw new ArgumentNullException(nameof(box));
}
var features = Features.ToList();
// Use a larger extent so that symbols partially outside of the extent are included
var grownBox = box.Grow(resolution * SymbolSize * 0.5);
return(features.Where(f => f.Geometry != null && f.Geometry.BoundingBox.Intersects(grownBox)).ToList());
}
public virtual IEnumerable <T> GetFeatures(FetchInfo fetchInfo)
{
if (fetchInfo == null)
{
throw new ArgumentNullException(nameof(fetchInfo));
}
if (fetchInfo.Extent == null)
{
throw new ArgumentNullException(nameof(fetchInfo.Extent));
}
var features = Features.ToList();
fetchInfo = new FetchInfo(fetchInfo);
// Use a larger extent so that symbols partially outside of the extent are included
var biggerBox = fetchInfo.Extent?.Grow(fetchInfo.Resolution * SymbolSize * 0.5);
var grownFeatures = features.Where(f => f != null && (f.Extent?.Intersects(biggerBox) ?? false));
return(grownFeatures.ToList());
}
public IEnumerable <IFeature> GetFeaturesInView(BoundingBox box, double resolution)
{
lock (syncRoot)
{
var features = Features.ToList();
foreach (var feature in features)
{
if (feature.Geometry == null)
{
continue;
}
if (box.Intersects(feature.Geometry.GetBoundingBox()))
{
yield return(feature);
}
}
}
}