public void DistanceChanged_Distance_Delta_Not_Set_Test()
{
DistanceChanged target = new DistanceChanged();
bool expected = true;
bool actual = target.Delta.Equals(0);
Assert.AreEqual(expected, actual);
}
public void DistanceChanged_Delta_Getter_Test()
{
DistanceChanged target = new DistanceChanged()
{
Delta = 4
};
int actualD = 4;
Assert.IsTrue(actualD == target.Delta);
}
public void DistanceChanged_Delta_Setter_Test()
{
DistanceChanged target = new DistanceChanged()
{
Delta = 3
};
bool expected = true;
bool actual = target.Delta.Equals(3);
Assert.AreEqual(expected, actual);
}
public IReturnType Calculate(ValidSetOfTouchPoints set)
{
if (set.Count != 2)
throw new InvalidDataSetException(string.Format("Distance can only be calculated between two points. The parameter contains {0} touch point(s)!", set.Count));
Point p1 = set[0].Position;
Point p2 = set[1].Position;
DistanceChanged value = new DistanceChanged();
value.Distance = TrigonometricCalculationHelper.GetDistanceBetweenPoints(p1, p2);
if (set[0].Stroke.StylusPoints.Count > 1 && set[1].Stroke.StylusPoints.Count > 1)
{
p1 = set[0].Stroke.StylusPoints[set[0].Stroke.StylusPoints.Count - 2].ToPoint();
p2 = set[1].Stroke.StylusPoints[set[1].Stroke.StylusPoints.Count - 2].ToPoint();
double prevDistance = TrigonometricCalculationHelper.GetDistanceBetweenPoints(p1, p2);
value.Delta = value.Distance - prevDistance;
}
return value as IReturnType;
}
public void DistanceChangedConstructorTest()
{
DistanceChanged target = new DistanceChanged();
int test = 0;
Assert.IsTrue(test == target.Delta);
}
