Unity创建Mesh

public class CreateMesh: MonoBehaviour
{
    void Start()
    {
	    			//该方法会新建一个名为Mesh的GameObject，该物体上包含一个 MeshFilter 和一个 MeshRenderer
        GameObject gameObject = new GameObject("Mesh", typeof(MeshFilter), typeof(MeshRenderer));
        gameObject.transform.localScale = new Vector3(30, 30, 1);//放大一点，避免到时候看不见
    }
}

//public class CreateMesh: MonoBehaviour
//{
   // void Start()
    //{
        Vector3[] vertices = new Vector3[0];	//声明顶点数组
        Vector2[] uv = new Vector2[0];		    //声明uv向量
        int[] triangles = new int[0];		    //声明三角形数组
        Mesh mesh = new Mesh();				   //声明网格
	    //对网格进行赋值引用
        mesh.vertices = vertices;
        mesh.uv = uv;
        mesh.triangles = triangles;
        //GameObject gameObject = new GameObject("Mesh", typeof(MeshFilter), typeof(MeshRenderer));
        //gameObject.transform.localScale = new Vector3(30, 30, 1);
		
	    //将新建物体的 MeshFilter 设为新建的 网格（Mesh）
        gameObject.GetComponent<MeshFilter>().mesh = mesh;
    //}
//}

//public class GameHandler5 : MonoBehaviour
//{
    //这里声明了一个材质，给它赋值一个带贴图的材质，不用材质也行
    public Material material;
    //void Start()
    //{
	//这里我们创建一个正方形网格，所以需要4个顶点、4个UV点和6条边
        Vector3[] vertices = new Vector3[4];	
        Vector2[] uv = new Vector2[4];
        int[] triangles = new int[6];
	//声明顶点的位置
        vertices[0] = new Vector3(0, 1);
        vertices[1] = new Vector3(1, 1);
        vertices[2] = new Vector3(0, 0);
        vertices[3] = new Vector3(1, 0);
	//声明UV的位置
        uv[0] = new Vector2(0, 1);
        uv[1] = new Vector2(1, 1);
        uv[2] = new Vector2(0, 0);
        uv[3] = new Vector2(1, 0);
	//声明三角边，这里三角边是根据上面的顶点来进行连接的，每三个顶点构成一个三角边
        //这里后面的int类型参数对应 vertices[]数组中的顶点
        triangles[0] = 0;
        triangles[1] = 1;
        triangles[2] = 2;
        triangles[3] = 2;
        triangles[4] = 1;
        triangles[5] = 3;
        //Mesh mesh = new Mesh();
	//将设置好的参数进行赋值
        mesh.vertices = vertices;
        mesh.uv = uv;
        mesh.triangles = triangles;
        //GameObject gameObject = new GameObject("Mesh", typeof(MeshFilter), typeof(MeshRenderer));
        //gameObject.transform.localScale = new Vector3(30, 30, 1);
        //gameObject.GetComponent<MeshFilter>().mesh = mesh;
        gameObject.GetComponent<MeshRenderer>().material = material;
    }
}