public void CatenaryTest()
{
Span s = new Span(new Vector2(15, 100), 300, 50);
var c = new Catenary(s, 1.15, 770);
Assert.IsTrue(c.IsOK);
Assert.IsTrue(s.Equals(c));
Assert.AreEqual(1.15, c.CableWeight);
Assert.AreEqual(770, c.HorizontalTension);
Assert.AreEqual(669.5652, c.CatenaryConstant, 1e-4);
CollectionAssert.AreEqual(new Vector2(54.832, 98.815), c.SagPoint, Extensions.AbsComparer(1e-3));
Assert.AreEqual(98.8149, c.Clearance, 1e-4);
CollectionAssert.AreEqual(new Vector2(-770, 45.833), c.StartTension, Extensions.AbsComparer(1e-3));
CollectionAssert.AreEqual(new Vector2(770, 306.78), c.EndTension, Extensions.AbsComparer(1e-3));
Assert.AreEqual(0.2240, c.Eta, 1e-4);
Assert.AreEqual(0.8160, c.GeometricStrainPct, 1e-4);
Assert.IsFalse(c.IsStartTowerUplift);
Assert.IsFalse(c.IsEndTowerUplift);
CollectionAssert.AreEqual(new Vector2(54.832, 98.815), c.LowestPosition, Extensions.AbsComparer(1e-3));
Assert.AreEqual(17.1019, c.MaximumSag, 1e-4);
Assert.AreEqual(17.1012, c.MidSag, 1e-4);
Assert.AreEqual(306.6199, c.TotalLength, 1e-4);
Assert.AreEqual(352.6128, c.TotalWeight, 1e-4);
}
public void SetClearancePointTest()
{
var c = new Catenary(new Vector2(15, 100), 300, 50, 1.15, 770);
var point = new Vector2(50.0, 95.0);
c.SetClearancePoint(point);
var x = point.X;
var actual = new Vector2(x, c.CatenaryFunction(x));
CollectionAssert.AreEqual(point, actual, Extensions.AbsComparer(1e-3));
}