Extracts Shared Item IDs from the front and/or back side of geometries and adds them as traits or a list attribute.
This transformer accepts any feature.
Features with extracted IDs added as traits or a list attribute.
Features that had no ID extracted.
This parameter specifies whether to extract Appearances, Textures, Rasters, or Geometry Definitions.
When extracting Appearances, Textures, or Rasters, this parameter specifies side(s) of the geometry from which Shared Item IDs should be extracted. They can be extracted from either the front, the back, or both front and back of each specified geometry.
This parameter specifies whether to store Shared Item IDs as list attributes or as traits.
Extracting Shared Item IDs as traits will cause the top level of nested Geometry Instances to be instantiated. To avoid this behaviour, extract Shared Item IDs as attributes instead.
The name of the attribute/trait on which to store Shared Item IDs.
Use this parameter if you want to isolate only a portion of the geometry passed in to the transformer. If no criteria are specified, the action will apply to the entire geometry at all levels.
Selection can be based on structural location, geometry name, type, appearance information, traits, trait storage types, or definition reference. The syntax used is a restricted set of XQuery, where the return clause is fixed.
The basic Geometry XQuery dialog allows you to construct simple selection queries by automatically writing the necessary query based on specified test clauses. Clicking the Switch to Advanced button opens the Advanced Editor, which allows you to type a query free-form, for more expressive queries.
Note: Once you switch to Advanced mode, you will have to clear all parameters before you can return to Basic mode.
A hierarchical geometry is represented as nodes of type geometry, with attributes containing information about traits, type, and name for each geometry.
Editing Transformer Parameters
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.
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