[obscureed]

I'm using surfaceFeatureExtract to extract feature edges from a collection of different STL files. Is there a slick way to specify multiple .stl file names, and get a separate .eMesh.gz file for each? The motivation is that different levels of refinement are used at different edges, so the STL names are a good way to keep track of them.

It is possible that I am abusing surfaceFeatureExtract, which gives a message about "only valid on closed manifold surfaces". I'm presuming it's OK to ignore that message? -- the workflow has been fine in Foundation-style OpenFOAM 10 (using surfaceFeatures).

In OF10, I can specify a list of surfaces. The controls seem to be just lying around in the file -- I presume they take effect (or maybe I have been using the defaults all these years).

FoamFile { version 8.0; format ascii; class dictionary; object surfaceFeaturesDict; }

surfaces (
  "w-floor.stl"
  "w-outside.stl"
  "w-sides.stl"
  );

includedAngle 150;
trimFeatures { minElem 1; }
writeObj yes;

In ESI-style OpenFOAM 2306, I can specify many files -- I can even match all the files with a wordRe, as below. Unlike in OF10, though, this generates only a single file, multiple123.eMesh.gz file. Is there a way to get a separate output file for each matching STL?

FoamFile { version 8.0; format ascii; class dictionary; object surfaceFeatureExtractDict; }

multiple123
{
  surfaces (".*stl");
  extractionMethod extractFromSurface;
  includedAngle 150;
  writeObj yes;
  trimFeatures{ minElem 1; minLen 0.01; }
  subsetFeatures{ openEdges yes; }
  loadingOption file;
}

While I'm here, can I also ask: what are the meanings of "offsetting" and "subsetting" in https://www.openfoam.com/documentati...xtract_8C.html -- where are they discussed in documentation?