SurfaceOnSurfaceOverlayer

Surface features.

Surface features are output here.

此处输出非表面特征。

The default behavior is to use the entire set of features as the group. This option allows you to select attributes that define which groups to form.

笔记：平行处理如何与FME一起使用：见About Parallel Processingfor detailed information.

This parameter determines whether or not the transformer should perform the work across parallel processes. If it is enabled, a process will be launched for each group specified by theGroup Byparameter.

Parallel Processing Levels

For example, on a quad-core machine, minimal parallelism will result in two simultaneous FME processes. Extreme parallelism on an 8-core machine would result in 16 simultaneous processes.

您可以尝试此功能，并在Windows任务管理器和Workbench日志窗口中查看信息。

TheOverlap Count Attributeholds the number of input surfaces that contain each output surface. This count will be 1 or greater.

如果设置为Yes,不rmal Tolerance in Degrees和Offset Tolerance参数已启用。如果设置为不，两个参数被禁用。

面孔必须在允许彼此切割之前平行。如果两个面与略微分开的正常平行，请使用此参数以度为单位的公差。值越大，面部必须彼此平行的镜面不太平行。

Usage Tip: Use this parameter together withOffset Tolerance.

在允许彼此互相切割之前，面孔必须是共同的平面。如果两个面几乎是共同平面，但彼此的小偏移，使用此参数在地面单元中设置公差。值越大，脸部越远，仍然可以考虑共同平面。

Usage Tip: Use this parameter together with不rmal Tolerance in Degrees.

Specifies how attributes should be accumulated. IfDrop Incoming Attributesis selected, all incoming attributes are removed from the features.Merge Incoming Attributesmerges all attributes from overlapping surfaces.Get Attributes From One Representative Featuretakes all attributes from one representative feature.

Allows you to specify a列表名称.

如果一个列表名称为每个输出功能提供，列表是创建包含输出功能的输入功能的所有属性。创建具有相同名称的列表traits.

笔记：List attributesare not accessible from the output schema in Workbench unless they are first processed using a transformer that operates on them, such aslist exploder.或者ListConcatenator. All list attribute transformers are displayed in the Contents pane of the Transformer Help underLists. Alternatively,attributeexposer.can be used.