public void GraphToGeometryConversionLinesTest()
{
Random random = new Random();
List <Coordinate> coordinates = new List <Coordinate>();
for (Int32 i = 0; i < 100; i++)
{
coordinates.Add(new Coordinate(i, i));
}
GeometryGraph graph = new GeometryGraph(PrecisionModel.Default, _referenceSystemMock.Object, null);
for (Int32 i = 0; i < coordinates.Count; i++)
{
graph.AddVertex(coordinates[i]);
if (i > 0)
{
graph.AddEdge(graph.GetVertex(coordinates[i - 1]), graph.GetVertex(coordinates[i]));
}
}
// only points
Dictionary <OperationParameter, Object> parameters = new Dictionary <OperationParameter, object>();
parameters[GraphOperationParameters.GeometryDimension] = 0;
GraphToGeometryConversion conversion = new GraphToGeometryConversion(graph, parameters);
conversion.Execute();
IGeometry result = conversion.Result;
Assert.IsTrue(result is IMultiPoint);
Assert.AreSame(result.ReferenceSystem, graph.ReferenceSystem);
Assert.AreEqual(coordinates.Count, (result as IMultiPoint).Count);
foreach (IPoint point in result as IMultiPoint)
{
Assert.IsTrue(coordinates.Contains(point.Coordinate));
}
// only lines
parameters = new Dictionary <OperationParameter, object>();
parameters[GraphOperationParameters.GeometryDimension] = 1;
conversion = new GraphToGeometryConversion(graph, parameters);
conversion.Execute();
result = conversion.Result;
Assert.IsTrue(result is IMultiLineString);
Assert.AreEqual(coordinates.Count - 1, (result as IMultiLineString).Count);
foreach (ILineString lineString in result as IMultiLineString)
{
Assert.IsTrue(lineString is ILine);
Assert.IsTrue(coordinates.Contains(lineString.StartCoordinate));
Assert.IsTrue(coordinates.Contains(lineString.EndCoordinate));
}
// points and lines
List <Coordinate> newCoordinates = new List <Coordinate>();
for (Int32 i = 100; i < 200; i++)
{
newCoordinates.Add(new Coordinate(i, i));
}
newCoordinates.ForEach(coordinate => graph.AddVertex(coordinate));
parameters = new Dictionary <OperationParameter, object>();
parameters[GraphOperationParameters.GeometryDimension] = 1;
conversion = new GraphToGeometryConversion(graph, parameters);
conversion.Execute();
result = conversion.Result;
Assert.IsTrue(result is IGeometryCollection <IGeometry>);
Assert.AreEqual(coordinates.Count - 1 + newCoordinates.Count, (result as IGeometryCollection <IGeometry>).Count);
foreach (IGeometry geometry in result as IGeometryCollection <IGeometry> )
{
Assert.IsTrue(geometry is ILine || geometry is IPoint);
if (geometry is ILine)
{
Assert.IsTrue(coordinates.Contains((geometry as ILine).StartCoordinate));
Assert.IsTrue(coordinates.Contains((geometry as ILine).EndCoordinate));
}
if (geometry is IPoint)
{
Assert.IsTrue(newCoordinates.Contains((geometry as IPoint).Coordinate));
}
}
}
