/// <summary>Transform a Vector by the given Matrix</summary>
/// <param name="vec">The vector to transform</param>
/// <param name="mat">The desired transformation</param>
/// <param name="result">The transformed vector</param>
public static void Transform(ref Vector3d vec, ref Matrix4d mat, out Vector4d result)
{
Vector4d v4 = new Vector4d(vec.X, vec.Y, vec.Z, 1.0f);
Vector4d.Transform(ref v4, ref mat, out result);
}
/// <summary>
/// Constructs a new instance from the given Vector4d.
/// </summary>
/// <param name="v">The Vector4d to copy components from.</param>
public Vector3d(Vector4d v)
{
X = v.X;
Y = v.Y;
Z = v.Z;
}