/// <summary>Creates a new instance of the <see cref="FdoGeometry" /> class that encapsulates
/// a copy of the specified FDO envelope, in the specified coordinate system.</summary>
/// <param name="envelope">The FDO envelope for which a copy will be encapsulated.</param>
/// <param name="coordinateSystem">The coordinate system of the encapsulated FDO geometry.</param>
/// <remarks>
/// <para>This instance encapsulates a copy of the specified <paramref name="envelope" />. It is thus
/// the responsibility of the caller to <see cref="IDisposable.Dispose()" /> the specified <paramref name="envelope" />.</para>
/// </remarks>
public FdoEnvelope(FGeometry.IEnvelope envelope, ICoordinateSystem coordinateSystem)
{
Debug.Assert(envelope!=null);
if (envelope==null)
throw new ArgumentNullException("envelope");
Debug.Assert(coordinateSystem!=null);
if (coordinateSystem==null)
throw new ArgumentNullException("coordinateSystem");
_Envelope=FdoGeometryBuilder.Factory.CreateEnvelope(envelope);
_CoordinateSystem=coordinateSystem;
}
/// <summary>Creates a new instance of the <see cref="FdoGeometry" /> class that encapsulates
/// a copy of the specified FDO geometry, in the specified coordinate system.</summary>
/// <param name="geometry">The FDO geometry for which a copy will be encapsulated.</param>
/// <param name="coordinateSystem">The coordinate system of the encapsulated FDO geometry.</param>
/// <remarks>
/// <para>This instance encapsulates a copy of the specified <paramref name="geometry" />. It is thus
/// the responsibility of the caller to <see cref="IDisposable.Dispose()" /> the specified <paramref name="geometry" />.</para>
/// </remarks>
public FdoGeometry(FGeometry.IGeometry geometry, ICoordinateSystem coordinateSystem)
{
Debug.Assert(geometry!=null);
if (geometry==null)
throw new ArgumentNullException("geometry");
Debug.Assert(coordinateSystem!=null);
if (coordinateSystem==null)
throw new ArgumentNullException("coordinateSystem");
_Geometry=FdoGeometryBuilder.Factory.CreateGeometry(geometry);
_CoordinateSystem=coordinateSystem;
}
/// <summary>
/// Creates the polygon from an envelope.
/// </summary>
/// <param name="env">The envelope.</param>
/// <returns></returns>
public static Fdo.IPolygon CreatePolygonFromEnvelope(Fdo.IEnvelope env)
{
FdoGeometryFactory fact = FdoGeometryFactory.Instance;
Fdo.IGeometry geom = fact.CreateGeometry(env);
return (Fdo.IPolygon)geom;
}
/// <summary>
/// Creates an R-Tree query rectangle from an FDO envelope
/// </summary>
/// <param name="env">The env.</param>
/// <returns></returns>
public static Rectangle RectFromEnvelope(Fdo.IEnvelope env)
{
return new Rectangle((float)env.MinX, (float)env.MinY, (float)env.MaxX, (float)env.MaxY, (float)env.MinZ, (float)env.MaxZ);
}
private static void CreateFigure(IGeometrySink sink, FGeometry.DirectPositionCollection positions)
{
if ((positions==null) || (positions.Count==0))
return;
using (FGeometry.IDirectPosition p0=positions[0])
{
if (p0.Dimensionality>2)
sink.BeginFigure(p0.X, p0.Y, p0.Z);
else
sink.BeginFigure(p0.X, p0.Y, null);
}
for (int i=1; i<positions.Count; ++i)
using (FGeometry.IDirectPosition pi=positions[i])
{
if (pi.Dimensionality>2)
sink.AddLine(pi.X, pi.Y, pi.Z);
else
sink.AddLine(pi.X, pi.Y, null);
}
sink.EndFigure();
}
private static void _PopulateSimpleType(IGeometrySink sink, FGeometry.IGeometry geometry)
{
sink.BeginGeometry(GeometryTypeUtils.Convert(geometry.DerivedType));
switch (geometry.DerivedType)
{
case FCommon.GeometryType.GeometryType_LineString:
using (FGeometry.DirectPositionCollection positions=((FGeometry.ILineString)geometry).Positions)
CreateFigure(sink, positions);
break;
case FCommon.GeometryType.GeometryType_Point:
using (FGeometry.DirectPositionCollection positions=new FGeometry.DirectPositionCollection())
using (FGeometry.IDirectPosition dp=((FGeometry.IPoint)geometry).Position)
{
positions.Add(dp);
CreateFigure(sink, positions);
}
break;
case FCommon.GeometryType.GeometryType_Polygon:
{
var polygon=(FGeometry.IPolygon)geometry;
using (FGeometry.ILinearRing exterior=polygon.ExteriorRing)
using (FGeometry.DirectPositionCollection positions=exterior.Positions)
CreateFigure(sink, positions);
for (int i=0; i<polygon.InteriorRingCount; ++i)
using (FGeometry.ILinearRing interior=polygon.GetInteriorRing(i))
using (FGeometry.DirectPositionCollection positions=interior.Positions)
CreateFigure(sink, positions);
}
break;
default:
throw new NotSupportedException(
string.Format(
CultureInfo.CurrentCulture,
SR.UnsupportedGeometryTypeException,
geometry.DerivedType
)
);
}
sink.EndGeometry();
}
