public static void XsAtY_Out_of_Range_Return_Empty_Arrays(double yCoord, double x, double y, double rotation)
{
CartesianCoordinate center = new CartesianCoordinate(x, y);
ParabolicCurve curve = new ParabolicCurve(a, center, rotation, Tolerance);
double[] xCoords = curve.XsAtY(yCoord);
Assert.AreEqual(0, xCoords.Length);
}
public static void XsAtY(double yCoord, double x, double y, double rotation, double x1CoordExpected, double x2CoordExpected)
{
CartesianCoordinate center = new CartesianCoordinate(x, y);
ParabolicCurve curve = new ParabolicCurve(a, center, rotation, Tolerance);
double[] xCoords = curve.XsAtY(yCoord);
Assert.AreEqual(x1CoordExpected, xCoords[0], Tolerance);
Assert.AreEqual(x2CoordExpected, xCoords[1], Tolerance);
}