o h@s, dddZedkrddlZedSdS)NcCs||vr||S|dur|dusJ|dur|dusJ|durJi}i}|D]!\}}|dr;|D]}|||<q3q(|drI|D]}|||<qBq(|\} } d} } | dr\| } d} n|| } | drk| } d} n|| } | | f| | f| | f| | fg} | D] }||vr||Sq|S)a Retrieve the kerning value (if any) between a pair of elements. The elments can be either individual glyphs (by name) or kerning groups (by name), or any combination of the two. Args: pair: A tuple, in logical order (first, second) with respect to the reading direction, to query the font for kerning information on. Each element in the tuple can be either a glyph name or a kerning group name. kerning: A dictionary of kerning pairs. groups: A set of kerning groups. fallback: The fallback value to return if no kern is found between the elements in ``pair``. Defaults to 0. glyphToFirstGroup: A dictionary mapping glyph names to the first-glyph kerning groups to which they belong. Defaults to ``None``. glyphToSecondGroup: A dictionary mapping glyph names to the second-glyph kerning groups to which they belong. Defaults to ``None``. Returns: The kerning value between the element pair. If no kerning for the pair is found, the fallback value is returned. Note: This function expects the ``kerning`` argument to be a flat dictionary of kerning pairs, not the nested structure used in a kerning.plist file. Examples:: >>> groups = { ... "public.kern1.O" : ["O", "D", "Q"], ... "public.kern2.E" : ["E", "F"] ... } >>> kerning = { ... ("public.kern1.O", "public.kern2.E") : -100, ... ("public.kern1.O", "F") : -200, ... ("D", "F") : -300 ... } >>> lookupKerningValue(("D", "F"), kerning, groups) -300 >>> lookupKerningValue(("O", "F"), kerning, groups) -200 >>> lookupKerningValue(("O", "E"), kerning, groups) -100 >>> lookupKerningValue(("O", "O"), kerning, groups) 0 >>> lookupKerningValue(("E", "E"), kerning, groups) 0 >>> lookupKerningValue(("E", "O"), kerning, groups) 0 >>> lookupKerningValue(("X", "X"), kerning, groups) 0 >>> lookupKerningValue(("public.kern1.O", "public.kern2.E"), ... kerning, groups) -100 >>> lookupKerningValue(("public.kern1.O", "F"), kerning, groups) -200 >>> lookupKerningValue(("O", "public.kern2.E"), kerning, groups) -100 >>> lookupKerningValue(("public.kern1.X", "public.kern2.X"), kerning, groups) 0 Nz public.kern1.z public.kern2.)items startswithget)pairkerninggroupsfallbackglyphToFirstGroupglyphToSecondGroupgroup groupMembersglyphfirstsecond firstGroup secondGrouppairsrZ/var/www/html/optinet_system/venv/lib/python3.10/site-packages/fontTools/ufoLib/kerning.pylookupKerningValuesLH           r__main__)rNN)r__name__doctesttestmodrrrrs  u