C# 为什么要画一个三角形I'；我在uv'；s

它画了一个三角形，但也有例外

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

public class MeshGenerator : MonoBehaviour
{
    public GameObject meshPrefab;
    public Vector3[] newVertices;
    public Vector2[] newUV;
    public int[] newTriangles;

    private Mesh mesh;

    void Start()
    {
        Mesh meshprefab = meshPrefab.GetComponent<MeshFilter>().sharedMesh;
        newVertices = meshprefab.vertices;
        newUV = meshprefab.uv;
        newTriangles = meshprefab.triangles;


        mesh = new Mesh();
        mesh = gameObject.GetComponent<MeshFilter>().mesh;
        mesh.Clear();
        mesh.uv = new Vector2[] { new Vector2(0, 0), new Vector2(0, 0.25f), new Vector2(0.25f, 0.25f) };
        mesh.vertices = new Vector3[] { new Vector3(0, 0, 0), new Vector3(0, 0.25f, 0), new Vector3(0.25f, 0.25f, 0) };
        mesh.triangles = new int[] { 0, 1, 2 };
    }
}

Mesh.uv已超出范围。提供的数组需要与Mesh.vertices数组的大小相同。

---

UnityEngine.Mesh:set_uv（Vector2[]）

您需要将顶点数组赋值语句移动到uv语句之前，因为Unity当前认为顶点数为零

mesh.vertices = ...
mesh.uv = ...

mesh.vertices = ...
mesh.uv = ...