private IEnumerable <IRing> ReadSingleExteriorRingPolygon(
[NotNull] BinaryReader reader, Ordinates ordinates, bool?reverseOrder = null)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
int ringCount = checked ((int)reader.ReadUInt32());
bool zAware = ordinates == Ordinates.Xyz || ordinates == Ordinates.Xyzm;
bool mAware = ordinates == Ordinates.Xym || ordinates == Ordinates.Xyzm;
// NOTE: Somtimes this takes ca. 250ms (may be when the license is checked?)!
IRing ringTemplate = GeometryFactory.CreateEmptyRing(zAware, mAware);
if (ringCount > 0)
{
bool reverse = reverseOrder ?? !AssumeWkbPolygonsClockwise;
var geometryBuilder = new WksPointListBuilder(reverse);
foreach (WKSPointZ[] wksPoints in ReadLinestringsCore(
reader, ordinates, ringCount, geometryBuilder))
{
IRing resultRing = GeometryFactory.Clone(ringTemplate);
GeometryUtils.SetWKSPointZs(resultRing, wksPoints);
yield return(resultRing);
}
}
}
private static IPolyline ReadPolyline(BinaryReader reader, WkbGeometryType geometryType,
Ordinates ordinates)
{
var geometryBuilder = new WksPointListBuilder();
IEnumerable <WKSPointZ[]> linestrings =
ReadLinestrings(reader, geometryType, ordinates, geometryBuilder);
IEnumerable <IPath> paths =
ToPaths(linestrings, geometryType, ordinates, geometryBuilder);
return(CreatePolycurve <IPolyline>(paths, ordinates));
}
private static IEnumerable <IPath> ToPaths(IEnumerable <WKSPointZ[]> wksLinestrings,
WkbGeometryType geometryType,
Ordinates ordinates,
WksPointListBuilder geometryBuilder)
{
IPath pathTemplate = CreateEmptyPath(ordinates);
foreach (WKSPointZ[] wksPoints in wksLinestrings)
{
IPath resultPath = geometryType == WkbGeometryType.MultiLineString
? GeometryFactory.Clone(pathTemplate)
: pathTemplate;
GeometryUtils.SetWKSPointZs(resultPath, wksPoints);
yield return(resultPath);
}
}
private static IMultipoint ReadMultipoint([NotNull] BinaryReader reader,
Ordinates ordinates)
{
int pointCount = checked ((int)reader.ReadUInt32());
var geometryBuilder = new WksPointListBuilder();
WKSPointZ[] wksZPoints =
ReadMultipointCore(reader, ordinates, pointCount, geometryBuilder);
bool zAware = ordinates == Ordinates.Xyz || ordinates == Ordinates.Xyzm;
bool mAware = ordinates == Ordinates.Xym || ordinates == Ordinates.Xyzm;
IMultipoint result = GeometryFactory.CreateEmptyMultipoint(zAware, mAware);
GeometryUtils.SetWKSPointZs(result, wksZPoints);
return(result);
}
