- combines region-based and proximity-based filtering
proxityRegions (post-filter):
Checks the distance of the resulting faces against the original
search surface. Filters based on the area-weighted distance
of each topologically connected region.
If the area-weighted distance of a region is greater than
\c absProximity, the entire region is rejected.
STYLE: 'proxityFaces' as newer synonym for 'proximity' filter
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