从Unity导出Obj格式的地形（Terrian）-Toy模板网

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1.在Unity中创建C#脚本

从Unity导出Obj格式的地形（Terrian）

using UnityEngine;
using System.Collections;
using UnityEditor;
using System.IO;
using UnityEngine.SceneManagement;
using UnityEngine.AI;
public class ExportMesh : MonoBehaviour
{
    [MenuItem("NavMesh/Export")]
    static void Export()
    {
        Debug.Log("ExportNavMesh"); NavMeshTriangulation tmpNavMeshTriangulation = NavMesh.CalculateTriangulation();        //新建文件
        string tmpPath = Application.dataPath + "/" + SceneManager.GetActiveScene().name + ".obj";       
        StreamWriter tmpStreamWriter = new StreamWriter(tmpPath);        //顶点
        for (int i=0;i<tmpNavMeshTriangulation.vertices.Length;i++)       
        {           
            tmpStreamWriter.WriteLine("v  "+ tmpNavMeshTriangulation.vertices[i].x+" "+ tmpNavMeshTriangulation.vertices[i].y+" "+ tmpNavMeshTriangulation.vertices[i].z);       
        }       
        tmpStreamWriter.WriteLine("g pPlane1");       
        //索引
        for (int i = 0; i < tmpNavMeshTriangulation.indices.Length;)       
        {           
            tmpStreamWriter.WriteLine("f " + (tmpNavMeshTriangulation.indices[i]+1) + " " + (tmpNavMeshTriangulation.indices[i+1]+1) + " " + (tmpNavMeshTriangulation.indices[i+2]+1));           
            i = i + 3;       
        }       
        tmpStreamWriter.Flush();       
        tmpStreamWriter.Close();       
        Debug.Log("ExportNavMesh Success");   
    }
}

保存程序，返回Unity。在Unity菜单栏会出现从Unity导出Obj格式的地形（Terrian）