// Calculates the angle between two vectors.
// Returns: The angle between the two given vectors.
public static float getAngleBetween(CVector aVector1, CVector aVector2)
{
if (!aVector1.isNormalized())
{
aVector1.clone().normalize();
}
if (!aVector2.isNormalized())
{
aVector2.clone().normalize();
}
return(Mathf.Acos(aVector1.dotProd(aVector2)));
}
// Determines if a given vector is to the right or left of this vector.
// Returns: -1 if to the left. +1 if to the right.
public float sign(CVector aVector)
{
CVector p = getPerpendicularVector();
return(p.dotProd(aVector) < 0 ? -1 : 1);
}