测试.png

using UnityEngine;using UnityEngine.UI;using System.Collections.Generic;[AddComponentMenu("UI/Effects/MirrorText")]public class MirrorText : BaseMeshEffect{    //距离，限制范围0-30    [Range(0, 30)]    public float distance;    public override void ModifyMesh(VertexHelper vh)    {        if (!IsActive() || vh.currentVertCount == 0)        {            return;        }        List
     
       vertexs = new List
      
       ();        vh.GetUIVertexStream(vertexs);        UIVertex vt;        int count = vertexs.Count;        float miny = vertexs[0].position.y;        float maxy = vertexs[0].position.y;        for (int i = 1; i < count; i++)        {            if (vertexs[i].position.y < miny)            {                miny = vertexs[i].position.y;            }            else if (vertexs[i].position.y > maxy)            {                maxy = vertexs[i].position.y;            }        }        float uiElementHeight = maxy - miny;        float mirrorMinY = -maxy + 2 * miny - distance;        Color32 top = GetComponent
       
        ().color;        Color32 bottom = new Color(top.r, top.g, top.b, 0);        for (int i = 0; i < count; i++)        {            vt = vertexs[i];            vertexs.Add(vt);            Vector3 v = vt.position;            v.y = -v.y + 2 * miny - distance;            vt.position = v;            //透明度效果            vt.color = Color32.Lerp(bottom, top, (vt.position.y - mirrorMinY) / uiElementHeight);            vertexs[i + count] = vt;        }        vh.Clear();        vh.AddUIVertexTriangleStream(vertexs);    }}