我使用 objImporter 它不是问题创建统一但我导入创建 3dmax 它是问题

Question

我使用 objImporter，它不是创建 unity 的问题，但我导入创建的 3dmax 是问题

사용한 스크립트 https://wiki.unity3d.com/index.php/ObjImporter

出现这个错误

Mesh.vertices is too large. A mesh may not have more than 65000 vertices.
UnityEngine.Mesh:set_vertices(Vector3[])
ObjImporter:ImportFile(String) (at Assets/MyAssets/Scripts/ObjImporter.cs:52)
UIManager:Load() (at Assets/MyAssets/Scripts/UIManager.cs:50)
UnityEngine.EventSystems.EventSystem:Update()

Mesh.uv is out of bounds. The supplied array needs to be the same size as the Mesh.vertices array.
UnityEngine.Mesh:set_uv(Vector2[])
ObjImporter:ImportFile(String) (at Assets/MyAssets/Scripts/ObjImporter.cs:53)
UIManager:Load() (at Assets/MyAssets/Scripts/UIManager.cs:50)
UnityEngine.EventSystems.EventSystem:Update()

Mesh.normals is out of bounds. The supplied array needs to be the same size as the Mesh.vertices array.
UnityEngine.Mesh:set_normals(Vector3[])
ObjImporter:ImportFile(String) (at Assets/MyAssets/Scripts/ObjImporter.cs:54)
UIManager:Load() (at Assets/MyAssets/Scripts/UIManager.cs:50)
UnityEngine.EventSystems.EventSystem:Update()

Failed setting triangles. Some indices are referencing out of bounds vertices. IndexCount: 166833, VertexCount: 0
UnityEngine.Mesh:set_triangles(Int32[])
ObjImporter:ImportFile(String) (at Assets/MyAssets/Scripts/ObjImporter.cs:55)
UIManager:Load() (at Assets/MyAssets/Scripts/UIManager.cs:50)
UnityEngine.EventSystems.EventSystem:Update()

Answer 1

问题是脚本使用了 16 位索引的网格，它只支持最大 2^16 个顶点大小的模型。然而，Unity 支持 32 位索引，最多支持 2^32 个顶点 = ~40 亿。您需要做的就是添加这一行：

mesh.indexFormat = Rendering.IndexFormat.UInt32;

在此之后：

Mesh mesh = new Mesh();

函数内部ImportFile。

请注意，某些移动设备不支持 32 位索引。

https://docs.unity3d.com/ScriptReference/Mesh-indexFormat.html

Answer 2

我认为您的问题与模型大小有关，因为网格可能有超过 65000 个顶点。你应该读取 65000 个顶点的每一块并将它们放在一个网格中，然后将所有网格块收集在一个网格中，即共享网格，
我强烈推荐使用此资产 Simple .OBJ，它将节省您的时间

我使用 objImporter 它不是问题创建统一但我导入创建 3dmax 它是问题

I use objImporter it is not problem created unity but i import created 3dmax it is problem

mesh

unity3d