编辑“3D模型”（章节）

===Preparing Maya 3d model 准备Maya 3D模型===
====UVs 纹理贴图====
Order of UV maps for the standard_atlas shader:
# '''map1''' - uv mapped to AO "<model>_unique"
# '''map2''' - uv mapped material atlas
standard_atlas着色器的UV贴图顺序:
#'''map1''' -uv渲染到环境光遮蔽（Ambient Occlusion） "<model>_unique"
#'''map2''' - uv贴图材质图集

====Issues with UV maps 关于UV贴图的问题====
This can catch you off guard when creating your model, map1 must be above map2, map1 must be the default uv set in Maya. If you’re importing the model from Blender as a .dae file, the uv maps must be in the correct order in Blender too.
If your uvs are not in the correct order, then use this method to rearrange them. I do not know a method to delete the default uv set in Maya.
The issue is that map1 is mapped to your material atlas.
# UV - UV Set Editor. Copy map1.
# Select map2 in the UV Set Editor.
# UV - UV Editor. Then in the UV Editor, UV Sets – Copy UVs to UV Set. Choose map1.
# In the UV Set Editor delete map2.
# Rename UVSet1 (originally copied from map1 in step 1) to “map2”.
# Select map1 and click Update.
这在创建模型时可能会让您措手不及，map1必须在map2之上，map1必须是Maya中的默认uv设置。如果你从Blender导入模型为.dae文件，uv贴图在Blender中的顺序也必须是正确的。我不知道有什么方法可以删除Maya中的默认uv集。问题是map1被映射到你的材质图集上。
# UV - UV Set Editor。复制到map1。
# 在  UV Set Editor 中选择 map2。
# UV - UV Editor. 然后在 UV Editor中点击UV Sets – Copy UVs to UV Set. 选择 map1。
# 在 UV Set Editor 中删除 map2。
# 将UVSet1（最初在步骤1中从map1复制的）重命名为 "map2"。
# 选择map1并点击更新。

====Broken normals 破损的法线====
使用 Maya 的 Mesh Cleanup 工具（使用默认设置）来解决<code>Error! Mesh contains broken normals, tangents and/or bitangents.</code>