public void TestAngle()
{
var routerDb = new RouterDb(Itinero.Data.Edges.EdgeDataSerializer.MAX_DISTANCE);
// add a vertical test edge bottom to top.
var edge = routerDb.AddTestEdge(
51.26737947201908f, 4.793193340301514f,
51.26737947201908f + 0.001f, 4.793193340301514f);
var middle = new RouterPoint(0, 0, edge, ushort.MaxValue / 2);
var angle = middle.Angle(routerDb.Network);
Assert.AreEqual(0, angle, 0.1f);
var start = new RouterPoint(0, 0, edge, 0);
angle = start.Angle(routerDb.Network);
Assert.AreEqual(0, angle, 0.1f);
var end = new RouterPoint(0, 0, edge, ushort.MaxValue);
angle = end.Angle(routerDb.Network);
Assert.AreEqual(0, angle, 0.1f);
// add an horizontal test edge left to right.
edge = routerDb.AddTestEdge(
51.26737947201908f, 4.793193340301514f,
51.26737947201908f, 4.793193340301514f + 0.001f);
middle = new RouterPoint(0, 0, edge, ushort.MaxValue / 2);
angle = middle.Angle(routerDb.Network);
Assert.AreEqual(90, angle);
start = new RouterPoint(0, 0, edge, 0);
angle = start.Angle(routerDb.Network);
Assert.AreEqual(90, angle, 0.1f);
end = new RouterPoint(0, 0, edge, ushort.MaxValue);
angle = end.Angle(routerDb.Network);
Assert.AreEqual(90, angle, 0.1f);
// add a vertical test edge top to bottom.
edge = routerDb.AddTestEdge(
51.26737947201908f + 0.001f, 4.793193340301514f,
51.26737947201908f, 4.793193340301514f);
middle = new RouterPoint(0, 0, edge, ushort.MaxValue / 2);
angle = middle.Angle(routerDb.Network);
Assert.AreEqual(180, angle);
start = new RouterPoint(0, 0, edge, 0);
angle = start.Angle(routerDb.Network);
Assert.AreEqual(180, angle, 0.1f);
end = new RouterPoint(0, 0, edge, ushort.MaxValue);
angle = end.Angle(routerDb.Network);
Assert.AreEqual(180, angle, 0.1f);
// add an horizontal test edge right to left.
edge = routerDb.AddTestEdge(
51.26737947201908f, 4.793193340301514f + 0.001f,
51.26737947201908f, 4.793193340301514f);
middle = new RouterPoint(0, 0, edge, ushort.MaxValue / 2);
angle = middle.Angle(routerDb.Network);
Assert.AreEqual(270, angle);
start = new RouterPoint(0, 0, edge, 0);
angle = start.Angle(routerDb.Network);
Assert.AreEqual(270, angle, 0.1f);
end = new RouterPoint(0, 0, edge, ushort.MaxValue);
angle = end.Angle(routerDb.Network);
Assert.AreEqual(270, angle, 0.1f);
}