Relax UV

放松紫外线

Relax UV gives you a different approach for optimizing the UV mesh. Unlike Automatic UV, which splits the UV mesh into groups of UV polygons, Relax UV attaches invisible springs that pull on the UV mesh to straighten it out and prevent overlaps.

放松紫外线给你一个不同的方法来优化紫外线网。与自动紫外线，其中分裂成组的紫外线多边形的网格，放松紫外线重视无形的弹簧拉动的紫外线网格，以校正和防止重叠。

The command is applied to the selection or to the entire UV mesh if no UVs are selected.

该命令应用于选择或整个 UV 网格，如果没有 UV 被选中。

The following UV mesh is distorted after being edited thoroughly, which can lead to other problems further down the line.

下面的 UV 网格在经过彻底编辑后会变形，这可能会导致下一步的其他问题。

The mesh looks better after clicking on the Apply button: The long, over-extended UV polygons are much more homogenous in relation to the rest of the UV mesh.

网格看起来更好后，点击应用按钮: 长，过度扩展的紫外线多边形是更均匀的相对于其余的紫外线网格。

Pin Border Points

边境管制站

The UV points at the edge of the selection are fixed in place.

选区边缘的 UV 点固定在适当的位置。

Pin to Neighbors

图钉与邻居

UV points connected to unselected polygons are fixed in place. This enables you to untangle part of the UV mesh, such as the ear, without it being separated from the rest of the mesh. Free points at the edge of the selection are not fixed in place.

连接到未选定多边形的紫外线点固定在适当的位置。这使您能够解开紫外线网的一部分，如耳朵，没有被从网的其余部分分开。自由点在边缘的选择不固定的地方。

Pin Point Selection

点选择

If you want to prevent certain areas from shrinking together or being twisted when relaxin UVs, select points that should be locked (pinned) to their current position and these UV points will not be moved.

如果你想防止某些区域收缩在一起或被扭曲时，放松 UV，选择点应该被锁定(固定)到他们的当前位置，这些 UV 点将不会被移动。

Use tag

使用标签

If the point selection should be read from a Selection tag, activate this option and drag the corresponding Point Selection tag from the Objects Manager into the field at the left of the option.

如果点选择应该从 Selection 标记读取，则激活此选项并将相应的 Point Selection 标记从 Objects Manager 拖动到选项左侧的字段中。

Example:

例子:

Let's say you want to paint this hand. After selecting the hand’s top surface and applying a frontal Projection (Projection tab), the result will look like hand 1. Many UV polygons overlap as a result of the projection. Click once on the Apply bottom in the Relax UV tab (all other options are deactivated). The hand will be distorted, as shown with hand 2.

假设你想画这只手。在选择手的顶部表面和应用一个正面投影(投影标签) ，结果将看起来像手1。许多紫外线多边形由于投影而重叠。单击一次在放松紫外线标签的应用底部(所有其他选项停用)。手会变形，如图2所示。

Although no UV polygons overlap, the finger tips have been compressed far too much to be able to work effectively in these areas. Switch to the UV Point mode and select the points of each finger and move them along the direction of the finger. Scale the points slightly for each finger and the result should look like hand 3.

虽然没有紫外线多边形重叠，但是指尖已经被压缩得太多，无法在这些区域有效地工作。切换到 UV 点模式，选择每个手指的点，并沿着手指的方向移动它们。对每个手指稍微缩放点，结果应该看起来像手3。

Next, select all points of the finger tips and a few points on the wrist that lie on opposite sides of the joint. These points will now be pinned in place by calling up the Add UV Pins command. To do so, activate the Pin Point Selection option. If you now click on the Apply button, the result will be as shown with hand 4. This result looks pretty good and only needs to be fine-tuned somewhat.

下一步，选择所有点的指尖和手腕上的几个点，分别位于关节的对面。现在通过调用 Add UV Pins 命令将这些点固定在适当的位置。要这样做，激活引脚点选择选项。如果你现在点击应用按钮，结果将如手4所示。这个结果看起来非常好，只需要稍微调整一下。

LSCM & ABF Mapping

LSCM & ABF 映射

Cut Selected Edges

切割选择的边缘

It is often necessary to define cuts using selected edges to avoid large UV-coordinate distortions. This process is also known as LSCM or ABF mapping (depending on the mode selected).

通常有必要使用选定的边界来定义切割，以避免大的紫外线坐标变形。这个过程也称为 LSCM 或 ABF 映射(取决于选择的模式)。

Example (LSCM)

示例(LSCM)

In the following example a head’s UVs are relaxed:

在下面的例子中，头部的 uv 是放松的:

1. First, the edges along which the UV-mesh should be cut must be selected using Path Selection (located in the 首先，必须使用路径选择(位于Select 选择 menu) in Edge Mode ( 菜单)在边缘模式(Tools / C4D Tools / Edges 工具/C4D 工具/边缘).
   
2. Next, switch to the Use Point mode and select the points at the top (these areas will remain relatively unchanged after relaxing) and call up the 接下来，切换到使用点模式，选择顶部的点(这些区域在放松后将保持相对不变) ，然后调用Add UV Pins 添加紫外线针 command. 命令
   
3. Switch to the front view and create a fitting UV projection by clicking on the 切换到前视图，并创建一个合适的紫外线投影点击Frontal 额叶 button in the UV Manager’s 在 UV 管理器的按钮Projection 投影 tab. 标签
   
4. Go to the 你可以去Relax UV 放松紫外线 tab and activate the 选项卡和激活Pin Point Selection 点选择 and 及Cut Selected Edges 切割选择的边缘 options. Also activate 选项。也激活Auto Realign 自动调整 to make sure the relaxed mesh fits the texture. Click on 确保放松的网格符合纹理。点击Apply 申请 to see the results. 看看结果
   

Note also the UV Unwrap... command that can do the above described even faster.

还要注意 UV Unwrap... 命令可以更快地完成上面描述的工作。

ABF

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The ABF mode can be described as an improved, but much slower, LSCM algorithm that produces fewer distorted UV polygons. It is advisable that a minimum number of Points be fixed via Pin Point Selection when using this mode.

ABF 模式可以描述为一种改进的 LSCM 算法，该算法可以产生较少的扭曲紫外多边形。当使用这种模式时，最好通过点选择来确定最少的点数。

ABF is better for use with organic shapes.

ABF 更适合用于有机形状。

Use tag

使用标签

If the edge selection should be read from a Selection tag, activate this option and drag the corresponding Edge Selection tag from the Object Manager into the field to the left of this option.

如果应该从 Selection 标记读取边缘选择，则激活此选项并将相应的边缘选择标记从 Object Manager 拖动到此选项左侧的字段中。

• If a frontal projection is applied to a spherical object the algorithm will not be able to locate suitable UV mesh edges. In such instances, the UV mesh should be broken down into several parts (e.g., using Cut Selected Edges). 如果正面投影应用于球形物体的算法将不能找到合适的紫外线网格边缘。在这种情况下，UV 网格应该分解成几个部分(例如，使用裁剪选择的边缘)

• If triangles or squares have been created too thin or are very degenerated (i.e. polygons lie on a straight line). 如果生成的三角形或正方形太细或非常退化(即多边形位于一条直线上)

• If a polygon edge borders on more than two polygons. 如果一个多边形的边界超过两个多边形

In this and the previous case, the two will select problem polygons so that such occurences can be quickly located and edited accordingly.

在本例和前一种情况下，两者将选择问题多边形，以便能够快速定位并相应地编辑这些出现的多边形。