public static void DifferentialSecond(double position, double expectedValueX, double expectedValueY)
{
CartesianParametricEquationXY parametricPrimeSecond = parametric.DifferentialSecond();
double xValue = parametricPrimeSecond.Xcomponent.ValueAt(position);
Assert.AreEqual(expectedValueX, xValue);
double yValue = parametricPrimeSecond.Ycomponent.ValueAt(position);
Assert.AreEqual(expectedValueY, yValue);
// No third differential
Assert.IsFalse(parametricPrimeSecond.HasDifferential());
}
public static void Differentiate_Differentiates_Equations(double position,
double expectedX, double expectedY,
double expectedXPrime, double expectedYPrime,
double expectedXPrimePrime, double expectedYPrimePrime)
{
// Base function
double xValue = parametric.Xcomponent.ValueAt(position);
Assert.AreEqual(expectedX, xValue);
double yValue = parametric.Ycomponent.ValueAt(position);
Assert.AreEqual(expectedY, yValue);
// First differential
Assert.IsTrue(parametric.HasDifferential());
CartesianParametricEquationXY parametricPrime = parametric.Differentiate();
double xValuePrime = parametricPrime.Xcomponent.ValueAt(position);
Assert.AreEqual(expectedXPrime, xValuePrime);
double yValuePrime = parametricPrime.Ycomponent.ValueAt(position);
Assert.AreEqual(expectedYPrime, yValuePrime);
// Second differential
Assert.IsTrue(parametricPrime.HasDifferential());
CartesianParametricEquationXY parametricPrimePrime = parametricPrime.Differentiate();
double xValuePrimePrime = parametricPrimePrime.Xcomponent.ValueAt(position);
Assert.AreEqual(expectedXPrimePrime, xValuePrimePrime);
double yValuePrimePrime = parametricPrimePrime.Ycomponent.ValueAt(position);
Assert.AreEqual(expectedYPrimePrime, yValuePrimePrime);
// No third differential
Assert.IsFalse(parametricPrimePrime.HasDifferential());
}
/// <summary>
/// Determines whether this instance can be differentiated further.
/// </summary>
/// <returns><c>true</c> if this instance has differential; otherwise, <c>false</c>.</returns>
public bool HasDifferential()
{
return(_curveParametric.HasDifferential());
}
