/// <summary>Constructs and initializes a Vector2f from the specified Vector2f.</summary>
/// <remarks>Constructs and initializes a Vector2f from the specified Vector2f.</remarks>
/// <param name="v1">the Vector2f containing the initialization x y data</param>
public Vector2f(Vector2f v1)
: base(v1)
{
}
// Combatible with 1.1
/// <summary>Computes the dot product of the this vector and vector v1.</summary>
/// <remarks>Computes the dot product of the this vector and vector v1.</remarks>
/// <param name="v1">the other vector</param>
public float Dot(Vector2f v1)
{
return (this.x * v1.x + this.y * v1.y);
}
/// <summary>Sets the value of this vector to the normalization of vector v1.</summary>
/// <remarks>Sets the value of this vector to the normalization of vector v1.</remarks>
/// <param name="v1">the un-normalized vector</param>
public void Normalize(Vector2f v1)
{
float norm;
norm = (float)(1.0 / Math.Sqrt(v1.x * v1.x + v1.y * v1.y));
this.x = v1.x * norm;
this.y = v1.y * norm;
}
/// <summary>
/// Returns the angle in radians between this vector and the vector
/// parameter; the return value is constrained to the range [0,PI].
/// </summary>
/// <remarks>
/// Returns the angle in radians between this vector and the vector
/// parameter; the return value is constrained to the range [0,PI].
/// </remarks>
/// <param name="v1">the other vector</param>
/// <returns>the angle in radians in the range [0,PI]</returns>
public float Angle(Vector2f v1)
{
double vDot = this.Dot(v1) / (this.Length() * v1.Length());
if (vDot < -1.0)
{
vDot = -1.0;
}
if (vDot > 1.0)
{
vDot = 1.0;
}
return ((float)(Math.Acos(vDot)));
}