生成管道、围栏、电力线
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Fences, pipes, and similar objects are placed along line segments selected from vector data sources (*.shp files).围栏、管道和其他此类对象沿从矢量数据源（*.shp 文件）中选择的线段放置。
The general workflow is as follows:基本工作流程如下：
1. 准备一个基本对象#
First, we create a primary object, that will be used as a building block for the generation — any *.node file containing a single root node with any hierarchy.首先，我们创建一个基本对象，它将用作生成的构建块——包含具有任何层次结构的单个根节点的任何 *.node 文件。
The primary object must be located and have a pivot at the origin (0, 0, 0).必须找到基本对象并在原点 (0, 0, 0) 处有一个枢轴。2. Adding a Vector Data Source and Specifying Filters2. 添加矢量数据源并指定过滤器#
This step is the same as Adding a Vector Data Source and Specifying Filters for Roads.这一步与添加矢量数据源和指定过滤器为道路。
3. Adding the Object and Specifying Parameters3. 添加对象和指定参数#
Now we must add the primary object created at the first step and bind it to the Filters created at the second step.现在，我们必须添加在第一步创建的基本对象并将它们绑定到在第二步创建的过滤器。
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On the Sources panel, click + Add Object.在 Sources 面板上，单击 + Add Object.
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In the drop-down, select the type of object you generate according to the Slot data. In our case, it is Points. Click Import.在下拉列表中，根据槽数据选择要生成的对象类型。在我们的例子中，是 Points。单击 Import。
Specify the following parameters for the primary object:为每个基本对象指定以下参数：
| Slot | 由您创建的用于组织数据过过滤器的槽。 |
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| Node | The path to the primary object's *.node file.通往基本对象的 *.node 文件。 |
| Enabled | 当打开时，将生成这种类型的对象。关闭时，这种类型的对象不会生成，也不存在于包含生成的地形的世界中。 |
| Use as Fence | Toggling on this option allows creating a line of object instances along the selected vector data.切换此选项允许沿选定的矢量数据创建一行相同的对象。 |
| Auto size |
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| Collider |
注意
Available only for the geometry type.仅适用于几何类型。 |
| Drop to ground | Flag indicating if the generated object will be aligned with the terrain surface.指示生成的对象是否与地形表面对齐的标志。 |
| Height offset |
注意
If the generated object is partially under the ground, increase this value to lift it above the terrain surface.如果生成的对象部分位于地下，则增加此值以将其提升到地形表面上方。 |
| Bake to cluster |
注意
The option is available only when the specified *.node file contains a Static Mesh.该选项仅在指定的 *.node 文件包含 Static Mesh 时可用。
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| Forward axis | Axis along which the primary object is to be tiled: X, -X, Y, -Y.基本对象沿其平铺的轴：X, -X, Y, -Y。 |
Placing Billboards放置广告牌#
You can also place billboards along the line segments selected from vector data sources.您还可以沿着从矢量数据源中选择的线段放置广告牌。
This option can be used, for example, to simulate lights along the generated roads. The general workflow is the same as described above with the following additions:例如，此选项可用于模拟沿生成的道路.基本工作流程与如上所述增加了以下内容：
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At Step 1, use a *.node file containing a single Billboards object as the primary object. The Billboards object should have an emissive material assigned to its surface.在步骤1使用包含单个 Billboards 对象的 *.node 文件作为基本对象。 Billboards 对象应该有一个发光材料分配给它的表面。注意If a *.node file contains several billboards, only the settings of the first one will be used.如果 *.node 文件包含多个广告牌，则只会使用第一个的设置。
- At Step 2, select the vector data of the road along which the lights are to be placed.在第2步选择要放置灯光的道路的矢量数据。
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At Step 3, when specifying parameters, do the following:在第 3 步, 在指定参数时，应执行以下操作：
- Disable the Autosize option.禁用 Autosize 选项。
- Set the value for the Step parameter that determines the distance (in units) between the two adjacent lights (Billboards) placed along the road.设置 Step 参数的值，该参数确定沿道路放置的两个相邻灯 (Billboards) 之间的距离（以单位为单位）。
The extra parameter becomes available: Split Billboards length (km). This parameter allows you to control the number of Billboards objects that will be generated due to area splitting:额外的参数变得可用：Split Billboards length (km)。此参数允许您控制由于区域分割而将生成的 Billboards 对象的数量：- Low values will increase the number of generated Billboards objects.低值将增加生成的 Billboards 对象的数量。
- High values will reduce this number.高值会减少这个数字。
注意The maximum number of Billboards contained in a single Billboards object is limited to 8000. Thus, the number of generated Billboards objects is also affected by the Step value, that you specify, since a low value produces a large total number of Billboards. Although Billboards are performance-friendly, generating too many of them may reduce performance.单个 Billboards 对象中包含的 Billboards 的最大数量限制为 8000。因此，生成的 Billboards 对象的数量也受您指定的 Step 值的影响，因为较低的值会产生大量的 Billboards。虽然 Billboards 对性能很友好，但生成太多可能会降低性能。
4. Generating Objects4. 生成对象#
Now you need to configure the output settings and generate (or regenerate) the terrain which contains these vector objects by clicking the Generate button.现在你需要配置输出设置和产生（或者再生) 通过单击 Generate 按钮包含这些矢量对象的地形。
By default, the generated objects are added to the world hierarchy as NodeReferences. However, they can be baked to a MeshCluster, if the corresponding option is enabled.默认情况下，生成的对象作为 NodeReferences 添加到世界层次结构中。然而，它们可以被烘焙到 MeshCluster，如果对应选项已启用。
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| Vector Objects as NodeReferences向量对象为 NodeReferences |
Vector Objects as MeshCluster向量对象为 MeshCluster |