igeometry.cs

来自「Sharp Map 用于制作GIS系统S harp Map 用于制作GIS系统S」· CS 代码 · 共 73 行

// Copyright 2005, 2006 - Morten Nielsen (www.iter.dk)
//
// This file is part of SharpMap.
// SharpMap is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// SharpMap is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public License
// along with SharpMap; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 

using System;
using System.Collections.Generic;
using System.Text;

namespace SharpMap.Geometries
{
	/// <summary>
	/// Defines basic interface for a Geometry
	/// </summary>
	public interface IGeometry
	{
		#region "Basic Methods on Geometry"

		/// <summary>
		/// Gets or sets the spatial reference system associated with the <see cref="Geometry"/>.
		/// A <see cref="Geometry"/> may not have had a spatial reference system defined for
		/// it, in which case *spatialRef will be NULL.
		/// </summary>
		SharpMap.CoordinateSystems.ICoordinateSystem SpatialReference { get; set; }

		/// <summary>
		///  The inherent dimension of this <see cref="Geometry"/> object, which must be less than or equal to the coordinate dimension.
		/// </summary>
		int Dimension { get; }

        /// <summary>
		/// The minimum bounding box for this Geometry, returned as a <see cref="Geometry"/>. The
        /// polygon is defined by the corner points of the bounding box ((MINX, MINY), (MAXX, MINY), (MAXX,
        /// MAXY), (MINX, MAXY), (MINX, MINY)).
        /// </summary>
        Geometry Envelope();

		/// <summary>
		/// The minimum <see cref="BoundingBox"/> for this <see cref="Geometry"/>.
		/// </summary>
		/// <returns><see cref="BoundingBox"/> for this <see cref="Geometry"/></returns>
		BoundingBox GetBoundingBox();

        /// <summary>
		/// Exports this <see cref="Geometry"/> to a specific well-known text representation of <see cref="Geometry"/>.
        /// </summary>
		string AsText();

		/// <summary>
		/// Exports this <see cref="Geometry"/> to a specific well-known binary representation of <see cref="Geometry"/>.
		/// </summary>
		byte[] AsBinary();

		/// <summary>
		/// Returns a WellKnownText representation of the <see cref="Geometry"/>
		/// </summary>
		/// <returns>Well-known text</returns>
		string ToString();

		/// <summary>
		/// If true, then this <see cref="Geometry"/> represents the empty point set,