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[Mapping] Introduce SubsetTopologicalMultiMapping with multiple topology inputs and one output#5952

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[Mapping] Introduce SubsetTopologicalMultiMapping with multiple topology inputs and one output#5952
th-skam wants to merge 6 commits intosofa-framework:masterfrom
th-skam:th-topomultimap

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@th-skam
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@th-skam th-skam commented Feb 11, 2026

A new SubsetTopologicalMultiMapping component that works with the SubsetMultiMapping, similar to the existing SubsetTopologicalMapping - SubsetMapping relationship.

There can be multiple inputs which are mapped/merged into a unified topology. This is done by offsetting the index addressing list of the mapped topological elements.

In addition, it generates an indexPairs array that can be linked to a SubsetMultiMapping component so that mechanical information can be propagated from and to subset nodes.

For triangles/quads, I added the option to flip normal vector orientation.

I also added a scene to demonstrate this.

[with-all-tests]

@th-skam th-skam added pr: status to review To notify reviewers to review this pull-request pr: new feature Implement a new feature labels Feb 11, 2026
@fredroy
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fredroy commented Feb 19, 2026

[ci-build][with-all-tests]

@bakpaul bakpaul requested a review from alxbilger February 19, 2026 09:30
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