unity-网格编程07

这里呢,我们需要对于顶点的重用,那么对于顶点的重用,就必须要删除一些顶点,在这里有两个顶点是相同的,所以我们要删除它,与顶点对于的normal,uv等也需要修改,还好修改的不多.

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

[RequireComponent(typeof(MeshFilter),typeof(MeshRenderer))]
public class SimpleProceduralMesh : MonoBehaviour
{
    private void OnEnable()
    {
        //var mesh = new Mesh();
        //mesh.name = "Procedural Mesh";
        var mesh = new Mesh()
        {
            name = "Procedural Mesh",
        };

        mesh.vertices = new Vector3[] {

            Vector3.zero,
            Vector3.right,
            Vector3.up,
            new Vector3(1f,1f),
        };
        mesh.triangles = new int[] {
            
            0,2,1,1,2,3
        };

        mesh.normals = new Vector3[] {
            Vector3.back,
            Vector3.back,
            Vector3.back,
            Vector3.back, 
        };

        mesh.uv = new Vector2[] {
            Vector2.zero,
            Vector2.right,
            Vector2.up, 
            Vector2.one
        };

        mesh.tangents = new Vector4[] {
            new  Vector4(1,0,0,-1),
            new  Vector4(1,0,0,-1),
            new  Vector4(1,0,0,-1),
            new  Vector4(1,0,0,-1), 
        };

        GetComponent<MeshFilter>().mesh = mesh;
    
    }
}

修改完毕之后,与之前的效果一样

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