在运行时将网格转换为stl/obj/fbx

Question

我正在寻找一种在运行时将网格导出为stl/obj/fbx格式并将其保存在Android手机的本地文件中的方法。

我该怎么做？如果存在，我愿意使用插件（免费/付费）。

Answer 1

这真的很复杂，因为您必须阅读每种格式（stl/obj/fbx）的规范并理解它们以便自己创建一个。幸运的是，已经有很多插件可以用来将Unity网格导出为stl，obj和fbx。

FBX：

UnityFBXExporter用于导出团结网在运行时为FBX。

public GameObject objMeshToExport; 

void Start() 
{ 
    string path = Path.Combine(Application.persistentDataPath, "data"); 
    path = Path.Combine(path, "carmodel"+ ".fbx"); 

    //Create Directory if it does not exist 
    if (!Directory.Exists(Path.GetDirectoryName(path))) 
    { 
     Directory.CreateDirectory(Path.GetDirectoryName(path)); 
    } 

    FBXExporter.ExportGameObjToFBX(objMeshToExport, path, true, true); 
} 

---

OBJ：

对于物镜，使用ObjExporter。

public GameObject objMeshToExport; 

void Start() 
{ 
    string path = Path.Combine(Application.persistentDataPath, "data"); 
    path = Path.Combine(path, "carmodel" + ".obj"); 

    //Create Directory if it does not exist 
    if (!Directory.Exists(Path.GetDirectoryName(path))) 
    { 
     Directory.CreateDirectory(Path.GetDirectoryName(path)); 
    } 

    MeshFilter meshFilter = objMeshToExport.GetComponent<MeshFilter>(); 
    ObjExporter.MeshToFile(meshFilter, path); 
} 

---

STL：

可以使用pb_Stl插件STL格式。

public GameObject objMeshToExport; 

void Start() 
{ 
    string path = Path.Combine(Application.persistentDataPath, "data"); 
    path = Path.Combine(path, "carmodel" + ".stl"); 

    Mesh mesh = objMeshToExport.GetComponent<MeshFilter>().mesh; 

    //Create Directory if it does not exist 
    if (!Directory.Exists(Path.GetDirectoryName(path))) 
    { 
     Directory.CreateDirectory(Path.GetDirectoryName(path)); 
    } 


    pb_Stl.WriteFile(path, mesh, FileType.Ascii); 

    //OR 
    pb_Stl_Exporter.Export(path, new GameObject[] { objMeshToExport }, FileType.Ascii); 
}