/// <summary>
/// Gets the X angle between two vectors
/// </summary>
/// <param name="vecA"></param>
/// <returns></returns>
public double GetAngleX()
{
var vx = new ASVECTOR2(1, 0);
var vn = new ASVECTOR2(this);
vn.Normalise();
double angle = Math.Acos(vx.ScalarProduct(vn));
if (vn.y < 0)
{
return(Math.PI * 2.0 - angle);
}
return(angle);
}
/// <summary>
/// Gets the Y angle between two vectors
/// </summary>
/// <param name="vecA"></param>
/// <returns></returns>
public double GetAngleY()
{
var vy = new ASVECTOR2(0, 1);
var vn = new ASVECTOR2(this);
vn.Normalise();
double angle = Math.Acos(vy.ScalarProduct(vn));
if (vn.x > 0)
{
return(Math.PI * 2.0 - angle);
}
return(angle);
}
/// <summary>
/// Initialise a new vector with a vector
/// </summary>
/// <param name="vec"></param>
public ASVECTOR2(ASVECTOR2 vec)
{
this.x = vec.x;
this.y = vec.y;
}
/// <summary>
/// Returns the product of vector A and B
/// </summary>
/// <param name="vecA"></param>
/// <param name="vecB"></param>
/// <returns></returns>
public double ScalarProduct(ASVECTOR2 v)
{
return(this.x * v.x + this.y * v.y);
}
/// <summary>
/// Multiplies the x,y,z components of vectors together
/// </summary>
/// <param name="vecA"></param>
/// <param name="vecB"></param>
public void MultiplyVector(ASVECTOR2 vecB)
{
x *= vecB.x;
y *= vecB.y;
}
/// <summary>
/// Divides the x,y,z components of two vectors by eachother
/// </summary>
/// <param name="vecA"></param>
/// <param name="vecB"></param>
public void DivideVector(ASVECTOR2 vecB)
{
x /= vecB.x;
y /= vecB.y;
}
/// <summary>
/// Substracts the x,y,z components of two vectors from one another
/// </summary>
/// <param name="vecA"></param>
/// <param name="vecB"></param>
public void MinusFromVector(ASVECTOR2 vecB)
{
x -= vecB.x;
y -= vecB.y;
}
/// <summary>
/// Adds the x,y,z components of two vectors together
/// </summary>
/// <param name="vecA"></param>
/// <param name="vecB"></param>
public void AddToVector(ASVECTOR2 vecB)
{
x += vecB.x;
y += vecB.y;
}