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Performs a surface-on-surface overlay so that all input surfaces are intersected against each other and resultant surface features are created and output. The output surfaces can retain all the attributes of the input features in which they are contained.

All surfaces are broken down into faces. For example, a mesh is broken into faces, one face per mesh part.

Non-surface input features are not supported. Input collections of surfaces are automatically de-aggregated.

Input Ports

Output Ports


Attribute Accumulation


Usage Notes

Aggregates are not supported by this transformer.

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.

Transformer Categories


Spatial Analysis

FME Licensing Level

FME Professional edition and above

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