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offsetSurface FeatureScript Documentation Incomplete


  • MichaelPascoeMichaelPascoe Member Posts: 1,488 PRO
    edited June 6

    Here is an example of how you can use it:

    opExtractSurface(context, id + "extractFace", {
                                "faces" : yourQueryHere,
                                "offset" : 0 * inch });
    qThisSide = qCreatedBy(id + "extractFace", EntityType.FACE);
    And here is some more info about it:

    opExtractSurface (context is Context, id is Id, definition is map)

    For Onshape internal use.
    This function takes a list of faces and creates one or more surfaces from those faces. The source faces and body are not affected.


    definition is map

    - faces is Query
    List of faces to be converted. If tangentPropagation is true, these are the seed faces.

    - tangentPropagation is boolean   optional
    Whether additional faces should be added to the selection by tangent propagation

    - offset is ValueWithUnits   optional
    Offset extracted surface faces by this distance along normal

    - useFacesAroundToTrimOffset is boolean   optional
    Use surrounding faces extensions to trim offset. Default true.

    - redundancyType is ExtractSurfaceRedundancyType   optional
    Controls the culling of redundant geometry on the result body, such as tangent edges and vertices. ALLOW_REDUNDANCY does not delete any redundant geometry. REMOVE_ADDED_REDUNDANCY removes redundancy created by this operation. REMOVE_ALL_REDUNDANCY removes all redundant edges and vertices. REMOVE_ADDED_REDUNDANCY is the default.

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  • Evan_ReeseEvan_Reese Member Posts: 1,984 PRO
    I didn't realize this had built in tangent propagation. Thanks, Michael!
    Evan Reese / Principal and Industrial Designer with Ovyl
    Website: ovyl.io
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