/// <summary>
/// Returns all objects whose boundingbox intersects bbox.
/// </summary>
/// <remarks>
/// <para>
/// Please note that this method doesn't guarantee that the geometries returned actually intersect 'bbox', but only
/// that their boundingbox intersects 'bbox'.
/// </para>
/// </remarks>
/// <param name="bbox"></param>
/// <returns></returns>
public virtual IList GetFeatures(IEnvelope bbox)
{
if (!IsOpen)
{
Open(Path);
}
if (!_IsOpen)
{
return(new List <IFeature>()); //return empty list in case there is no connection
}
var table = _DxfFile.NewTable();
foreach (FeatureDataRow fdr in _FeatureTable)
{
if (fdr.Geometry != null)
{
if (fdr.Geometry.EnvelopeInternal.Intersects(bbox))
{
if (FilterDelegate == null || FilterDelegate(fdr))
{
FeatureDataRow dr = table.NewRow();
dr[DxfSchema.GIS_DXF_FLD_ID] = fdr[DxfSchema.GIS_DXF_FLD_ID];
dr[DxfSchema.GIS_DXF_FLD_HANDLE] = fdr[DxfSchema.GIS_DXF_FLD_HANDLE];
dr[DxfSchema.GIS_DXF_FLD_LAYER_NAME] = fdr[DxfSchema.GIS_DXF_FLD_LAYER_NAME];
dr[DxfSchema.GIS_DXF_FLD_SHAPE_TYPE] = fdr[DxfSchema.GIS_DXF_FLD_SHAPE_TYPE];
dr[DxfSchema.GIS_DXF_FLD_LABEL] = fdr[DxfSchema.GIS_DXF_FLD_LABEL];
dr.Geometry = fdr.Geometry;
table.AddRow(dr);
}
}
}
}
return(table);
}
