ugui生成雷达图

网上找了下没啥好的代码，自己结合资料优化了下，支持创建任意边数的雷达图

原理是采用CanvasRender创建Mesh

  using System.Collections;
  using System.Collections.Generic;
  using UnityEngine;

  [RequireComponent(typeof(CanvasRenderer))]
  public class UGUI_Radar : MonoBehaviour
  {
      [SerializeField] private Material mat;//材质球，自行创建，shader选择 UI/Default
      [SerializeField] private Texture _tex;//贴图，可选
      private CanvasRenderer _render;
      public List<int> dataList = new List<int>(10);//每个点的数据
      [SerializeField] private float radarSize = 10f;//雷达图的长度

      // Start is called before the first frame update
      void Start()
      {
          _render = GetComponent<CanvasRenderer>();
          UpdateRadarVisualData();
      }

      // Update is called once per frame
      void Update()
      {

      }

      /// <summary>
      /// 生成雷达图
      /// </summary>
      public void UpdateRadarVisualData()
      {
          int _length = dataList.Count;
          if (_length < 3)
          {
              Debug.LogError("边数不能小于3");
              return;
          }
          Mesh mesh = new Mesh();
          Vector3[] vertices = new Vector3[_length + 1];
          Vector2[] uv = new Vector2[_length + 1];
          int[] triangles = new int[3 * _length];//一个三角形，三个点，5个图形，乘以5
          float angleIncrement = 360f / _length;//度数

          vertices[0] = Vector3.zero;
          for (int i = 1; i <= _length; i++)
          {
              vertices[i] = Quaternion.Euler(0, 0, -angleIncrement * (i - 1)) * Vector3.up * radarSize * dataList[i-1];
          }

          uv[0] = Vector2.zero;
          for (int i = 1; i <= _length; i++)
          {
              uv[i] = Vector2.one;
          }

          /*
          triangles[0] = 0;
          triangles[1] = 1;
          triangles[2] = 2;

          triangles[3] = 0;
          triangles[4] = 2;
          triangles[5] = 3;

          triangles[6] = 0;
          triangles[7] = 3;
          triangles[8] = 4;

          triangles[9]  = 0;
          triangles[10] = 4;
          triangles[11] = 5;

          triangles[12] = 0;
          triangles[13] = 5;
          triangles[14] = 1;
          */

          //注释规律总结
          for (int i = 0; i < _length * 3; i++)
          {
              if (i%3 == 0)
              {
                  triangles[i] = 0;
              }
              else
              {
                  if ((i-1)%3 == 0)
                  {
                      triangles[i] = (i - 1) / 3 + 1;
                  }
                  else
                  {
                      triangles[i] = (i - 2) / 3 + 2;
                  }
              }
              //最终值为1
              if (i == _length * 3 - 1)
              {
                  triangles[i] = 1;
              }
          }

          mesh.vertices = vertices;
          mesh.uv = uv;
          mesh.triangles = triangles;

          _render.SetMesh(mesh);
          _render.SetMaterial(mat, _tex);
      }

  }