private static void TestRangeFromThreeToFour(IOrderedSymbolTable <int, string> numberToString)
{
var elementsWithThreeToFourKeys = numberToString.Range(3, 4).ToList();
Assert.True(elementsWithThreeToFourKeys.Contains(KeyValuePair.Create(3, "A")));
Assert.AreEqual(1, elementsWithThreeToFourKeys.Count);
}
private static void TestRangeFromFourToFive(IOrderedSymbolTable <int, string> numberToString)
{
var elementsWithFourToFiveKeys = numberToString.Range(4, 5).ToList();
Assert.True(elementsWithFourToFiveKeys.Contains(KeyValuePair.Create(5, "E")));
Assert.AreEqual(1, elementsWithFourToFiveKeys.Count);
}
private static void HandleVerticalLine(ILine line, IOrderedSymbolTable <int, int> xToY, List <Point> intersections)
{
var aY = line.A.Y;
var bY = line.B.Y;
var intersectionWithCurrentVerticalLine = xToY
.Range(Math.Min(aY, bY), Math.Max(aY, bY))
.Select(intersection => CreatePointFrom(line.A.X, intersection.Key));
intersections.AddRange(intersectionWithCurrentVerticalLine);
}
private static void HandleEvent(KeyValuePair <int, ILine> @event,
IOrderedSymbolTable <int, int> xToY,
List <Point> intersections)
{
var(x, line) = @event;
if (line.LineType == ILine.Type.Horizontal)
{
HandleHorizontalLine(x, line, xToY);
}
else
{
HandleVerticalLine(line, xToY, intersections);
}
}
private static void HandleHorizontalLine(int x, ILine line, IOrderedSymbolTable <int, int> xToY)
{
if (x == line.A.X)
{
xToY.Add(line.A.Y, x);
return;
}
var deleted = xToY.TryDelete(line.A.Y);
if (deleted)
{
return;
}
var message = $"Reached end point of horizontal line but couldn't remove its y:{line.A.Y} coordinated";
throw new InvalidOperationException(message);
}
private static void TestRangeFromFourToFour(IOrderedSymbolTable <int, string> numberToString)
{
Assert.AreEqual(0, numberToString.Range(4, 4).ToList().Count);
}
