public Feature[] GetFeatures(Envelope envelope)
{
if (_features == null)
{
return(null);
}
if (envelope == null)
{
return(null);
}
Envelope validExtent = _envelope.IntersectWith(envelope);
if (validExtent == null)
{
return(null);
}
List <Feature> retFets = new List <Feature>();
foreach (Feature fet in _features)
{
if (validExtent.Contains(fet.Geometry.Envelope))
{
retFets.Add(fet);
}
else
{
if (fet.Geometry.Envelope.IsInteractived(validExtent))
{
retFets.Add(fet);
fet.IsRepeatedOverGrids = true;
}
}
}
return(retFets.Count > 0 ? retFets.ToArray() : null);
}
public Feature[] GetFeatures_NEW(Envelope envelope)
{
lock (lockObject)
{
if (envelope == null)
{
return(null);
}
if (_features == null && _featureCount == -1)
{
ReadRecords(null);
}
Envelope validExtent = _envelope.IntersectWith(envelope);
if (validExtent == null)
{
return(null);
}
List <Feature> retFets = new List <Feature>();
FetchFeatures((fet) =>
{
if (validExtent.Contains(fet.Geometry.Envelope))
{
retFets.Add(fet);
}
else
{
if (fet.Geometry.Envelope.IsInteractived(validExtent))
{
retFets.Add(fet);
fet.IsRepeatedOverGrids = true;
}
}
}
);
if (_argOfLeveling != null && _argOfLeveling.Enabled && _shapeType == enumShapeType.Point)
{
using (LevelAdjuster set = new LevelAdjuster())
{
set.BeginLevel = _argOfLeveling.BeginLevel;
set.GridSize = _argOfLeveling.GridSize;
set.Features = retFets.ToArray();
set.Do();
}
}
return(retFets.Count > 0 ? retFets.ToArray() : null);
}
}
public override bool Contains(Shape geometry)
{
if (!Envelope.Contains(geometry.Envelope))
{
return(false);
}
if (geometry is ShapePoint)
{
return(GeometryMathLib.IsPointInPolygon(geometry as ShapePoint, this));
}
else if (geometry is ShapePolyline)
{
ShapePolyline line = geometry as ShapePolyline;
foreach (ShapeLineString part in line.Parts)
{
foreach (ShapePoint pt in part.Points)
{
if (!GeometryMathLib.IsPointInPolygon(pt, this))
{
return(false);
}
}
}
return(true);
}
else if (geometry is ShapePolygon)
{
ShapePolygon ply = geometry as ShapePolygon;
foreach (ShapeRing ring in ply.Rings)
{
foreach (ShapePoint pt in ring.Points)
{
if (!GeometryMathLib.IsPointInPolygon(pt, this))
{
return(false);
}
}
}
return(true);
}
return(false);
}
private bool HitTestByPoint(ShapePoint shapePoint, double tolerance)
{
if (this is ShapePoint)
{
Envelope evp = Envelope.Clone() as Envelope;
evp = evp.Expand((float)tolerance);
return(evp.Contains(shapePoint.Envelope));
}
else if (this is ShapePolyline)
{
return(GeometryMathLib.GetDistance(this as ShapePolyline, shapePoint) < tolerance);
}
else if (this is ShapePolygon)
{
return((this as ShapePolygon).Contains(shapePoint));
}
else
{
throw new NotSupportedException("暂不支持对\"" + this.GetType().ToString() + "\"进行点击测试。");
}
}
public Feature[] HitTestByPrj(Envelope prjRect)
{
ILayer[] lyrs = _map.LayerContainer.Layers;
if (lyrs == null || lyrs.Length == 0)
{
return(null);
}
List <Feature> fets = new List <Feature>();
foreach (IFeatureLayer y in lyrs)
{
if (!(y is IFeatureLayer))
{
continue;
}
if (!_map.LayerContainer.IsSelectable(y.Name))
{
continue;
}
BaseFeatureRenderer r = y.Renderer as BaseFeatureRenderer;
if (r._currentFeatureRects.Count > 0)
{
foreach (Feature fet in r._currentFeatureRects.Keys)
{
if (fet.Geometry == null)
{
continue;
}
if (prjRect.Contains(fet.Geometry.Envelope))
{
fets.Add(fet);
}
}
}
}
return(fets.Count > 0 ? fets.ToArray() : null);
}