public void BuildGraphFromCompleteGraphShapefile()
{
var shapepath = "graph.shp";
var count = 1179;
Assert.IsTrue(File.Exists(shapepath), string.Format("File not found: '{0}'", shapepath));
var reader = new ShapefileReader(shapepath);
var edges = reader.ReadAll();
Assert.IsNotNull(edges);
Assert.IsInstanceOf(typeof(GeometryCollection), edges);
Assert.AreEqual(count, edges.NumGeometries);
// Insert arbitrary userdata
for (var i = 0; i < count; i++)
{
var g = edges.GetGeometryN(i) as IMultiLineString;
Assert.IsNotNull(g);
var ls = g.GetGeometryN(0) as ILineString;
Assert.IsNotNull(ls);
Assert.IsNull(ls.UserData);
ls.UserData = i;
Assert.IsNotNull(ls.UserData);
}
var startls = edges.GetGeometryN(515).GetGeometryN(0) as ILineString;
Assert.IsNotNull(startls);
var startPoint = startls.EndPoint;
Assert.AreEqual(2317300d, startPoint.X);
Assert.AreEqual(4843961d, startPoint.Y);
var endls = edges.GetGeometryN(141).GetGeometryN(0) as ILineString;;
Assert.IsNotNull(endls);
var endPoint = endls.StartPoint;
Assert.AreEqual(2322739d, endPoint.X);
Assert.AreEqual(4844539d, endPoint.Y);
var finder = new PathFinder(true);
foreach (IMultiLineString mlstr in edges.Geometries)
{
Assert.AreEqual(1, mlstr.NumGeometries);
var str = mlstr.GetGeometryN(0) as ILineString;
Assert.IsNotNull(str);
Assert.IsNotNull(str.UserData);
Assert.IsTrue(finder.Add(str));
}
finder.Initialize();
var expectedResultCount = 8;
var path = finder.Find(startPoint, endPoint);
Assert.IsNotNull(path);
Assert.IsInstanceOf(typeof(IMultiLineString), path);
var strings = (IMultiLineString)path;
Assert.AreEqual(expectedResultCount, strings.NumGeometries);
foreach (var g in strings.Geometries)
{
Assert.IsNotNull(g.UserData);
Console.WriteLine("{0} : {1}", g.UserData, g);
}
var reversedPath = finder.Find(endPoint, startPoint);
Assert.IsNotNull(reversedPath);
Assert.IsInstanceOf(typeof(IMultiLineString), reversedPath);
var reversedStrings = (IMultiLineString)reversedPath;
Assert.AreEqual(expectedResultCount, reversedStrings.NumGeometries);
foreach (var g in reversedStrings.Geometries)
{
Assert.IsNotNull(g.UserData);
Console.WriteLine("{0} : {1}", g.UserData, g);
}
for (var i = 0; i < expectedResultCount; i++)
{
var item = strings.GetGeometryN(i);
var itemReversed = strings.GetGeometryN(expectedResultCount - 1 - i);
Assert.AreNotEqual(item.UserData, itemReversed.UserData);
Assert.AreNotEqual(item, itemReversed);
}
}
