# 镜像修改器¶

The Mirror Modifier mirrors a mesh along its local X, Y and/or Z axes, across the Object Origin. It can also use another object as the mirror center, then use that object's local axes instead of its own.

## 选项¶

### 轴向¶

The X, Y, Z axis along which to mirror, i.e. the axis perpendicular to the mirror plane of symmetry.

### 选项¶

Note

• 镜像的顶点组必须按照常规的左/右模式来命名（即以 “.R”，“.ri​​ght”，“.L”等为后缀）。
• 镜面一边的顶点组必须已经存在（它不会自动创建）。它也必须是完全空的（没有分配顶点给它）。

### 纹理¶

Flip UV

The Flip U and Flip V options allows you to mirror the UV texture coordinates across the middle of the image.

UV 偏移

Amount to shift mirrored UVs on the U/V axis.

It's useful for baking (as overlapping UVs can cause artifacts to appear in the baked map), so the UVs can be moved outside the image and not used for baking, but still be used for display.

## 提示¶

### 镜像修改器与细分表面修改器的配合使用¶

 表面细分修改器在镜像修改器之前. 镜像修改器在表面细分修改器之前

The first image above shows the Subdivision Surface Modifier placed before the Mirror one; as you can see the effect of this is that the mesh is split down the center line of the mirror effect. This is because the Subdivision calculation moves vertices away from the mirror plane, too far away from the Merge Limit.

The second image shows the Mirror Modifier placed before the Subdivision Surface Modifier. In this order, the mirror calculation is done and the vertices are merged together. Only after that does the Subdivision Surface Modifier move any vertices.