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);
}
/// <summary>
/// Converts a LineString to <LineString Text> format, then
/// Appends it to the writer.
/// </summary>
/// <param name="lineString">The LineString to process.</param>
/// <param name="writer">The output stream to Append to.</param>
private static void AppendLineStringText(LineString lineString, StringWriter writer)
{
if (lineString == null || lineString.IsEmpty())
writer.Write("EMPTY");
else
{
writer.Write("(");
for (int i = 0; i < lineString.NumPoints; i++)
{
if (i > 0)
writer.Write(", ");
AppendCoordinate(lineString.Vertices[i], writer);
}
writer.Write(")");
}
}
