GIS编程

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C#

LinestringTests.cs：源码内容

							using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using NUnit.Framework;
using SharpMap.Geometries;
namespace UnitTests.Geometries
{
	[TestFixture]
	public class LinestringTests
	{
		[Test]
		public void Linestring()
		{
			LineString l = new LineString();
			Assert.IsTrue(l.IsEmpty());
			Assert.IsNull(l.GetBoundingBox());
			Assert.AreEqual(0, l.Length);
			Assert.IsFalse(l.Equals(null));
			Assert.IsTrue(l.Equals(new LineString()));
			Collection<Point> vertices = new Collection<Point>();
			vertices.Add(new Point(54, 23));
			vertices.Add(new Point(93, 12));
			vertices.Add(new Point(104, 32));
			l.Vertices = vertices;
			Assert.IsFalse(l.IsEmpty());
			Assert.IsFalse(l.IsClosed);
			Assert.AreEqual(3, l.NumPoints);
			Assert.AreEqual(new Point(54, 23), l.StartPoint);
			Assert.AreEqual(new Point(104,32), l.EndPoint);
			l.Vertices.Add(new Point(54, 23));
			Assert.IsTrue(l.IsClosed);
			Assert.AreEqual(114.15056678325843, l.Length);
			Assert.AreNotSame(l.Clone(), l);
			Assert.AreNotSame(l.Clone().Vertices[0], l.Vertices[0]);
			Assert.AreEqual(l.Clone(), l);
			LineString l2 = l.Clone();
			l2.Vertices[2] = l2.Vertices[2] + new Point(1, 1);
			Assert.AreNotEqual(l2, l);
			l2 = l.Clone();
			l2.Vertices.Add(new Point(34, 23));
			Assert.AreNotEqual(l2, l);
		}
	}
}

						