Unity Mesh 绘制多边形

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using UnityEngine;
using System.Collections;

public class MeshTest : MonoBehaviour {

    private MeshFilter m_MeshFilter;

    void Start () {
        Mesh mesh = new Mesh();

        mesh.vertices = new Vector3[] {
            new Vector3(0, 0, 0),       // 顶点：0
            new Vector3(1, 0, 0),       // 顶点：1
            new Vector3(1.5f, 1, 0),    // 顶点：2
            new Vector3(0.6f, 1.5f, 0), // 顶点：3
            new Vector3(-0.8f, 1, 0),    // 顶点：4
        };

        // 遵循顺时针三顶点确定一面
        mesh.triangles = new int[] {
            0, 2, 1, // 面：0, 2, 1
            0, 4, 2, // 面：0, 4, 2
            4, 3, 2, // 面：4, 3, 2
        };


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