unity 卡牌聚拢算法

• 前言
• 代码

前言

笔者在做项目时遇到了一个要聚拢手牌，像三国杀里的手牌聚拢的效果
大概效果图：

代码

public Dictionary<int, int> level_index ;//全部牌数据，卡牌id-卡牌阶级
//objects是需要洗的牌数
public void Xipai(GameObject[] objects)
    {    float readonly position1=-2.28f;
        float readonly position2=-3.5f;
        float readonly allLength=4.9f;
        //float readonly rotation=1f; //旋转间隔系数
        int temp;
        int counta = objects.Length;
        foreach(GameObject t in kapai)
        {
            if(!objects.Contains(t)){
                t.SetActive(false);
            }
        }
        for(int i=0;i<counta;i++)
        {
            temp = i + 1;
             if (!objects[i].activeSelf) objects[i].SetActive(true);
            //距离聚拢
            //4.9 -0.19
            objects[i].transform.position = new Vector3(position2 + allLength / (counta + 1f) * (temp - 1f) + (temp - 1f) * 1f, position1, 0f);
                //旋转成扇形
                float t = (counta % 2f == 1f ? 1f : 0f);//奇偶判断器
                float t1 = counta - t;//奇变偶
                float t2 = t1 / 2;//取中间值
                if (t == 1f && temp == t2 + 1)
                {
                    objects[i].transform.localEulerAngles = new Vector3(0f, 0f, 0f);
                }
                else
                {
                    objects[i].transform.localEulerAngles = new Vector3(0f, 0f, (temp <= t2 ? 90f : 0f) - 180f / (counta + 1f) * (temp - (temp > t2 ? t2 + t : 0f)) + (temp <= t2 ? -1f : 1f) * (level_index.Count - counta) * temp * rotation);
                }
        }
    }