VectorExtensions.cs

using UnityEngine;

public static class VectorExtensions
{
    /// <summary>
    ///     将坐标点移动四分之一个圆
    /// </summary>
    /// <param name="pivot">原点</param>
    /// <param name="before">移动前的坐标点</param>
    /// <returns>移动后的坐标点</returns>
    public static Vector3 MoveMinusQuarterCircle(Vector3 pivot, Vector3 before)
    {
        var beforeVec = before - pivot;
        var afterVec = beforeVec;
        afterVec.x = -beforeVec.z;
        afterVec.z = beforeVec.x;
        return afterVec + pivot;
    }
}