如何导入3D场景(.obj文件和.mtl文件) [英] How to import 3D scene (.obj file with .mtl file)

问题描述

我购买了一个房间的3D模型.该模型为 .obj 格式.现在，我正在尝试将此模型导入Unity3D.

模型随附:

• 5 x .obj 文件
• 5 x .mtl 个文件
• n x .jpg 个文件
• n x .tga 个文件

.mtl 文件包含我的PC上不存在的路径.所以我删除了路径.图像文件( .jpg 和amp; .mtl )与 .obj 文件位于同一目录中.当我尝试导入 .obj 文件时，房间上没有任何材料.然后，我尝试使用FBX转换器(选中嵌入媒体")将 .obj 转换为 .fbx ，并且仍然在导入时没有任何内容3D房间(它是不可见的).我还尝试将所有 .jpg 和 .tga 文件导入Unity中根Assets文件夹下的文件夹，然后导入 .obj 和 .mtl 文件.

我做错了什么?Unity3D是否使用 .mtl 来确定在哪里可以找到所需的图像文件?是否有可能可以了解一些进口日志?

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更新[8/25/2015]

1. 我编辑了所有我的 .mtl 文件并删除了路径，因此它只是图像文件名(即 map_Ka Arch 53-wood 14.jpg )./p>

2. 我将所有 .jpg 和 .tga 文件复制到同一目录中的纹理" 文件夹中.

p>

3. 我使用FBX转换器将 .obj 文件转换为 .fbx .

4. 将 .fbx 导入Unity3D.

它仍然会创建一个没有材质(不可见)的模型，但是它在导入时自动创建的材质文件夹中包含的文件要少得多，这些文件映射到我在Assets文件夹下导入的图像-也许这是进度吗?不确定...

UPDATE [8/25/2015]#2

可能我的模型可以正确导入，但是我设置不正确吗?我导入的 .fbx 模型的下面有多个Mesh过滤器.每个Mesh滤镜的Albedo确实映射到我导入到Assets文件夹下的图像(请参见屏幕截图)，但是当我将根模型拖到场景中时，它仍然是透明的-为什么?

更新[2015年8月27日]

我无法使 .obj / .mtl 组合工作.我能够让作者转换为fbx，因此我也试图使其正常工作(转换后的fbx文件遇到相同的问题).我此时会创建一个新的SO问题(

解决方案

• 使用fbx(将obj转换为fbx，obj不起作用)
• 将fbx导入为资产
• 将textrure图像文件导入为资产
  (图像命名:modelname_Texture_0.jpg modelname_Texture_1.jpg等，fbx名称:modelname.fbx)
• 从收藏夹中选择模型->所有模型
  在检查器标签的材料"下
• 选择进口材料>物质命名
• 选择模型名称+模型的材料
  物质搜索
• 选择本地材料的文件夹
• 单击应用"
  完成

I bought a 3D Model of a room. The model is in the .obj format. Now, I'm trying to import this model into Unity3D.

The Model came with:

• 5 x .obj files
• 5 x .mtl files
• n x .jpg files
• n x .tga files

The .mtl files contained paths that do not exist on my PC. So I removed the paths. The images files (.jpg & .mtl) are in the same directory as the .obj files. When I tried to import the .obj files, the room has no material on it. I then tried to use the FBX converter (with "Embed media" checked) to convert the .obj to .fbx and still when I import it, there is no material on the 3D room (it's invisible). I also tried importing all the .jpg and .tga files to a folder underneath the root Assets folder in Unity then importing the .obj and .mtl files.

What am I doing wrong? Does Unity3D use the .mtl to determine where to find the image files required? Is there an import log that could possibly shed some light?

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UPDATE [8/25/2015]

1. I edited all my .mtl files and removed the paths so its just the image filename (i.e. map_Ka Arch 53-wood 14.jpg).

2. I copied all my .jpg and .tga files to a "Textures" folder in the same directory.

3. I used the FBX Converter to convert the .obj files to .fbx.

4. Imported the .fbx into Unity3D.

It still creates a model with no material (invisible) on it but the material folder it automatically creates upon import has much less files in it and those files map to images I imported under my Assets folder -- maybe this is progress? Not sure...

UPDATE [8/25/2015] #2

Possibly my model is importing correctly but I'm not setting something right? My .fbx model that I imported has number of Mesh filters underneath it. Each Mesh filter's Albedo does map to an image that I imported underneath my Assets folder (see screen shot) but still still when I drag the root model into my scene it is transparent -- why?

UPDATE [8/27/2015]

I was not able to get the .obj / .mtl combo working. I was able to get the author to convert to fbx so I'm trying to get that working as well (same issues I'm having with my converted fbx files). I create a new SO question at this point (Imported .fbx model Is Transparent)

解决方案

• use fbx (convert obj to fbx, obj doesn't work)
• import fbx as asset
• import textrure images files as asset
  (image naming: modelname_Texture_0.jpg modelname_Texture_1.jpg etc, fbx name: modelname.fbx)
• select the model from favorites -> all models
  in the inspectors tab under materials
• select import materials > material naming
• select model name + model's material
  material search
• select local material's folder
• click apply
  done

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