/// <summary>
/// 返回两个单位的距离
/// </summary>
/// <param name="a">单位a</param>
/// <param name="b">单位b</param>
/// <returns>单位间的距离</returns>
public static float Distance(ObjectUnit a, ObjectUnit b)
{
float m = 0;
if (a.Model != null)
{
m += a.Model.TransformedMajorSphere.Radius;
}
if (b.Model != null)
{
m += b.Model.TransformedMajorSphere.Radius;
}
return(MathHelper.Clamp(Vector3.Distance(a.Position, b.Position) - m, 0, float.MaxValue));
}
/// <summary>
/// 获得目标相对于源单位前方的夹角的COS值
/// </summary>
/// <param name="o">源单位</param>
/// <param name="target">目标</param>
/// <returns>夹角的COS值</returns>
public static float AngleCos(ObjectUnit o, ObjectUnit target)
{
return(Vector3.Dot(o.Face, Vector3.Normalize(target.Position - o.Position)));
}
