public void can_normalize_sample()
{
var actual = new VectorD(new[] { 3.0, 4, 5, -6 });
var expected = actual.GetQuotient(actual.GetMagnitude());
actual.Normalize();
Assert.Equal(expected, actual);
}
public void zero_vector_normalizes_to_zero()
{
var actual = new VectorD(4);
var expected = new VectorD(4);
actual.Normalize();
Assert.Equal(expected, actual);
}
/// <summary>
/// Retrieves the angle, expressed in radians, between the two specified vectors.
/// </summary>
/// <param name="vector1">The first vector to evaluate.</param>
/// <param name="vector2">The second vector to evaluate.</param>
/// <returns>The angle, in radians, between vector1 and vector2.</returns>
public static double AngleBetween(VectorD vector1, VectorD vector2)
{
vector1.Normalize();
vector2.Normalize();
double angle = Math.Atan2(vector2.y, vector2.x) - Math.Atan2(vector1.y, vector1.x);
if (angle > Math.PI)
{
angle -= Math.PI * 2.0;
}
else if (angle < -Math.PI)
{
angle += Math.PI * 2.0;
}
return(angle);
}
/// <summary>
/// Retrieves the angle, expressed in radians, between the two specified vectors.
/// </summary>
/// <param name="vector1">The first vector to evaluate.</param>
/// <param name="vector2">The second vector to evaluate.</param>
/// <returns>The angle, in radians, between vector1 and vector2.</returns>
public static double AngleBetween(VectorD vector1, VectorD vector2)
{
vector1.Normalize();
vector2.Normalize();
double angle = Math.Atan2(vector2.y, vector2.x) - Math.Atan2(vector1.y, vector1.x);
if (angle > Math.PI)
{
angle -= Math.PI * 2.0;
}
else if (angle < -Math.PI)
{
angle += Math.PI * 2.0;
}
return angle;
}
public void NormalizeException()
{
VectorD v = new VectorD(11);
v.Normalize();
}
public void Normalize()
{
VectorD v = new VectorD(new[] { 3.0, -1.0, 23.0, 0.4 });
v.Normalize();
Assert.IsTrue(v.IsNumericallyNormalized);
}
