private EdgeRing _shell; // if non-null, the ring is a hole and this EdgeRing is its containing shell
#endregion Fields
#region Constructors
/// <summary>
/// Initializes a new instance of the EdgeRing class.
/// </summary>
public EdgeRing( DirectedEdge start, GeometryFactory geometryFactory, CGAlgorithms cga )
{
_geometryFactory = geometryFactory;
_cga = cga;
ComputePoints(start);
ComputeRing();
}
public BufferEdgeBuilder(CGAlgorithms cga, LineIntersector li, double distance, bool makePrecise, int quadrantSegments)
{
this._cga = cga;
this._distance = distance;
//lineBuilder = new BufferMultiLineBuilder(cga, li);
_lineBuilder = new BufferLineBuilder(_cga, li, makePrecise,quadrantSegments);
}
public BufferLineBuilder(CGAlgorithms _cga, LineIntersector li, bool makePrecise, int quadrantSegments)
{
this._cga = _cga;
this._li = li;
this._makePrecise = makePrecise;
_angleInc = Math.PI / 2.0 / quadrantSegments;
_lineList = new ArrayList();
// ensure array has exactly one element
_lineList.Add(arrayTypeCoordinate);
}
/// <summary>
/// Initializes a new instance of the MaximalEdgeRing class.
/// A MaximalEdgeRing is a ring of edges which may contain nodes of degree > 2.
/// A MaximalEdgeRing may represent two different spatial entities:
/// <ul>
/// <li>a single polygon possibly containing inversions (if the ring is oriented CW)
/// <li>a single hole possibly containing exversions (if the ring is oriented CCW)
/// </ul>
/// If the MaximalEdgeRing represents a polygon,
/// the interior of the polygon is strongly connected.
/// These are the form of rings used to define polygons under some spatial data models.
/// However, under the OGC SFS model, {@link MinimalEdgeRings} are required.
/// A MaximalEdgeRing can be converted to a list of MinimalEdgeRings using the
/// { BuildMinimalRings() } method.
/// </summary>
public MaximalEdgeRing( DirectedEdge start, GeometryFactory geometryFactory, CGAlgorithms cga ) : base( start, geometryFactory, cga )
{
}
public BufferLineBuilder(CGAlgorithms _cga, LineIntersector li, bool makePrecise)
: this(_cga, li, makePrecise, DefaultQuadrantSegments)
{
}
/// <summary>
/// Initializes a new instance of the ConvexHull with the specified CGAlgorithms class.
/// </summary>
/// <param name="cga"></param>
public ConvexHull(CGAlgorithms cga)
{
this._cga = cga;
}
/// <summary>
/// Initializes a new instance of the BufferMultiLineBuilder class.
/// </summary>
/// <param name="cga"></param>
/// <param name="li"></param>
public BufferMultiLineBuilder(CGAlgorithms cga, LineIntersector li)
{
_cga = cga;
_li = li;
_angleInc = Math.PI / 2.0 / QUADRANT_SEGMENTS;
} // public BufferMultiLineBuilder(CGAlgorithms cga, LineIntersector li)
/// <summary>
/// Initializes a new instance of the PolygonBuilder class.
/// </summary>
public PolygonBuilder( GeometryFactory geometryFactory, CGAlgorithms cga )
{
_geometryFactory = geometryFactory;
_cga = cga;
} // public PolygonBuilder( GeometryFactory geometryFactory, CGAlgorithms cga )
/// <summary>
/// Initializes a new instance of the ConvexHull with the specified CGAlgorithms class.
/// </summary>
/// <param name="cga"></param>
public ConvexHull(CGAlgorithms cga)
{
this._cga = cga;
}
private void InitBlock()
{
_geometryFactory = new GeometryFactory();
_cga = new RobustCGAlgorithms();
}
