Question

它绘制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 };
    }
}

例外是在线：

mesh.uv = new Vector2[] { new Vector2(0, 0), new Vector2(0, 0.25f), new Vector2(0.25f, 0.25f) };

Mesh.uv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 []）

Answer 1

你需要将顶点数组赋值语句移动到uv之前，因为Unity当前认为顶点数是零。

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

为什么在尝试绘制三角形时，我会在uv上超出范围？

1 个答案: