/// <inheritdoc/>
/// <remarks>
/// The <see cref="Polygon.ExteriorRing"/> is guaranteed to be orientated counter-clockwise.
/// <br/>The <see cref="Polygon.InteriorRings"/> are guaranteed to be orientated clockwise.
/// </remarks>
public override Polygon CreatePolygon(LinearRing shell, LinearRing[] holes)
{
if (shell != null)
{
if (!shell.IsCCW)
{
shell = ReverseRing(shell);
}
}
if (holes != null)
{
for (int i = 0; i < holes.Length; i++)
{
if (holes[i].IsCCW)
{
holes[i] = ReverseRing(holes[i]);
}
}
}
return(base.CreatePolygon(shell, holes));
}
/// <summary>
/// Constructs a <c>Polygon</c> with the given exterior boundary and
/// interior boundaries.
/// </summary>
/// <param name="shell">
/// The outer boundary of the new <c>Polygon</c>,
/// or <c>null</c> or an empty <c>LinearRing</c> if the empty
/// point is to be created.
/// </param>
/// <param name="holes">
/// The inner boundaries of the new <c>Polygon</c>
/// , or <c>null</c> or empty <c>LinearRing</c>s if the empty
/// point is to be created.
/// </param>
/// <param name="factory"></param>
public Polygon(LinearRing shell, LinearRing[] holes, GeometryFactory factory) : base(factory)
{
if (shell == null)
{
shell = Factory.CreateLinearRing();
}
if (holes == null)
{
holes = new LinearRing[] { }
}
;
if (HasNullElements(holes))
{
throw new ArgumentException("holes must not contain null elements");
}
if (shell.IsEmpty && HasNonEmptyElements(holes))
{
throw new ArgumentException("shell is empty but holes are not");
}
_shell = shell;
_holes = holes;
}
/// <summary>
/// Constructs a <c>Polygon</c> with the given exterior boundary.
/// </summary>
/// <param name="shell">the outer boundary of the new <c>Polygon</c>, or
/// <c>null</c> or an empty <c>LinearRing</c> if
/// the empty geometry is to be created.</param>
/// <returns>the created Polygon</returns>
/// <exception cref="ArgumentException">If the boundary ring is invalid</exception>
public virtual Polygon CreatePolygon(LinearRing shell)
{
return(CreatePolygon(shell, null));
}
/// <summary>
/// Constructs a <c>Polygon</c> with the given exterior boundary and
/// interior boundaries.
/// </summary>
/// <param name="shell">
/// The outer boundary of the new <c>Polygon</c>, or
/// <c>null</c> or an empty <c>LinearRing</c> if
/// the empty point is to be created.
/// </param>
/// <param name="holes">
/// The inner boundaries of the new <c>Polygon</c>, or
/// <c>null</c> or empty <c>LinearRing</c> s if
/// the empty point is to be created.
/// </param>
/// <returns>A <see cref="Polygon"/> object</returns>
public virtual Polygon CreatePolygon(LinearRing shell, LinearRing[] holes)
{
return(new Polygon(shell, holes, this));
}
/// <summary>
/// Constructs a <c>Polygon</c> with the given exterior boundary.
/// </summary>
/// <param name="shell">
/// The outer boundary of the new <c>Polygon</c>,
/// or <c>null</c> or an empty <c>LinearRing</c> if the empty
/// polygon is to be created.
/// </param>
public Polygon(LinearRing shell) : this(shell, null, DefaultFactory)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Polygon"/> class.
/// </summary>
/// <param name="shell">
/// The outer boundary of the new <c>Polygon</c>,
/// or <c>null</c> or an empty <c>LinearRing</c> if the empty
/// point is to be created.
/// </param>
/// <param name="holes">
/// The inner boundaries of the new <c>Polygon</c>
/// , or <c>null</c> or empty <c>LinearRing</c>s if the empty
/// point is to be created.
/// </param>
/// <remarks>
/// For create this <see cref="Geometry"/> is used a standard <see cref="GeometryFactory"/>
/// with <see cref="PrecisionModel" /> <c> == </c> <see cref="PrecisionModels.Floating"/>.
/// </remarks>
public Polygon(LinearRing shell, LinearRing[] holes) : this(shell, holes, DefaultFactory)
{
}
/* BEGIN ADDED BY MPAUL42: monoGIS team */
/// <summary>
/// Constructs a <c>Polygon</c> with the given exterior boundary.
/// </summary>
/// <param name="shell">
/// The outer boundary of the new <c>Polygon</c>,
/// or <c>null</c> or an empty <c>LinearRing</c> if the empty
/// polygon is to be created.
/// </param>
/// <param name="factory"></param>
public Polygon(LinearRing shell, GeometryFactory factory) : this(shell, null, factory)
{
}
private static LinearRing ReverseRing(LinearRing ring)
{
return((LinearRing)ring.Reverse());
}
/// <inheritdoc/>
/// <remarks>
/// The <see cref="Polygon.ExteriorRing"/> is guaranteed to be orientated counter-clockwise.
/// </remarks>
public override Polygon CreatePolygon(LinearRing shell)
{
return(CreatePolygon(shell, null));
}
