protected override int ExecuteCore(IRow row, int tableIndex)
{
var feature = (IFeature)row;
IGeometry shape = feature.Shape;
var polygonArea = shape as IArea;
if (polygonArea == null)
{
return(0);
}
var polygon = shape as IPolygon;
if (polygon == null)
{
return(ExecutePart(row, shape));
}
PolygonPartType partType = _perPart
? PolygonPartType.ExteriorRing | PolygonPartType.Ring
: PolygonPartType.Full;
if (partType == PolygonPartType.Full || GeometryUtils.GetPartCount(polygon) == 1)
{
if (_useField)
{
double?areaValue = GdbObjectUtils.ReadRowValue <double>(row, _areaFieldIndex);
if (areaValue != null)
{
return(CheckArea(Math.Abs(areaValue.Value), shape, row));
}
}
return(CheckArea(Math.Abs(polygonArea.Area), shape, row));
}
// need to check the individual rings
int errorCount = 0;
foreach (IGeometry part in TestUtils.GetParts(polygon, partType))
{
errorCount += ExecutePart(row, part);
if (part != polygon)
{
// the part is some sub-component of the polygon, either
// a ring or a connected-component polygon
// -> release it to avoid pushing the VM allocation up
Marshal.ReleaseComObject(part);
}
}
return(errorCount);
}
public static IEnumerable <IGeometry> GetParts([NotNull] IPolygon shape,
PolygonPartType perPart)
{
if ((perPart & PolygonPartType.Full) == PolygonPartType.Full)
{
yield return(shape);
}
if ((perPart & PolygonPartType.ExteriorRing) == PolygonPartType.ExteriorRing)
{
foreach (IPolygon extPoly in GeometryUtils.GetConnectedComponents(shape))
{
yield return(extPoly);
}
}
if ((perPart & PolygonPartType.Ring) == PolygonPartType.Ring)
{
foreach (IRing ring in GeometryUtils.GetRings(shape))
{
yield return(ring);
}
}
}
