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diff --git a/fonts/gentium-tug/source/type1/README b/fonts/gentium-tug/source/type1/README new file mode 100644 index 0000000000..21815d95b5 --- /dev/null +++ b/fonts/gentium-tug/source/type1/README @@ -0,0 +1,149 @@ +================================================== +Scripts for the conversion from TrueType to Type 1 +================================================== + +They are based on the 'make' utility. + +The directory is self-contained. + +The scripts don't need internet connection. + + +Usage +===== + +make [ kerns | test ] + +test + Test the converted fonts using t1lint. + +kerns + Generate files that will contain all the added kerning pairs except the + kerning between D and V. The kern between D and V is changed, not added. + + +The usual usage is just 'make' which converts the fonts, deletes the +intermediate files and checks the fonts with t1lint. + +Use "make" three times to convert the fonts to Type 1. You need to call "make" +twice for all kerning changes to propagate. However the third call to "make" +reorders some lines in the afm files. The order of lines in afm files is +stable after the third call to "make". + +The second call to "make" is sufficient from the functional point of view, +however the diff of afm files created using two and three calls of "make" +would contain too many differences. + + +File dependency tree +==================== + +Makefile + generate-extra-kerns.sh + greekcorrection.py + kerncorrection.py + Gentium*-Czech.kern + ff-gentium.pe + afmcreator.py + +kern-test-greek.txt +kern-word-list-caron.txt +kern-word-list-cyrillic.txt + + +File description +================ + +Makefile + This is the root of the conversion scripts. + +generate-extra-kerns.sh + Calls the scripts greekcorrection.py and kerncorrection.py and adds the kerning + pairs for the Czech and Slovak letters dcaron and lcaron. + +greekcorrection.py + Generates kerning pairs for the combinations accent + capital Greek letter. + +kerncorrection.py + Generates kerning pairs for the accented Latin letters, small caps and some + combinations with quotes or punctuation. + +Gentium*-Czech.kern + Contains manually added kerning pairs for dcaron and lcaron. + +ff-gentium.pe + Converts the fonts to Type 1. + +afmcreator.py + Currently just writes to the afm files that the creator is TeX Users Group. + +kern-word-list.txt + Independent file that is not used for the conversion. It contains words and + character pairs for testing the kerning of dcaron and lcaron. It is used in + the Metrics Window in FontForge to manually review the kerning pairs. + + +Changes from the original fonts +=============================== + +* Added kerning pairs for accented Latin letters + +* Added kerning pairs for small caps. + +* Added kerning pairs for some combinations of letters, quotes and + punctuation. + +* Added kerning pairs for combination accent + Greek capital letter. + +* Added kerning pairs for dcaron and lcaron. + +* Changed kerning pair between D and V from positive to negative value (where + appropriate). + + +Remarks +======= + +* The converted italic fonts have all the 63 extra Greek kerning pairs. The + upright fonts have less (GentiumPlus-Regular has currently 44 pairs). This + is not an error. Some pairs like 'tonos' + 'Epsilon' would have the kerning + equal to 0 and these zeroes are eliminated in the script. + +* The characters like Alphatonos are created from the base letter (Alpha) and + the accent (tonos). The combined character defines the relative horizontal + position of the accent and character. However, there is also non-zero + relative *vertical* position between these two. That means that e.g. tonos is + not in the same height in the combined character as it is when tonos is + alone. The result should be checked! + + +Files for testing kerning in FontForge +-------------------------------------- + +These files are used in the Metrics window of FontForge to look how the +introduced kerning pairs look in the converted fonts in some context. This is +just about the fonts themselves, not about the TeX support files. Some issues +might be corrected in the TeX support files (such as the vertical position of +the accents for composite capital Greek letters). + +kern-test-greek.txt + This file shows some combinations of accent + capital Greek letter and + sometimes compares this to the precomposed accented letter. You can compare + the position of accent in the pair accent + letter with the precomposed + letter. Even the vertical position of the accent may be different in the + pair from the position in the precomposed letter. + + It also shows the accent tonos folowed by a precomposed letter with this + accent so that you can easily see if there is some difference in the + vertical position of the accent. + + There are two glyphs for Omega in the fonts and it shows how both of these + behave. + +kern-word-list-caron.txt + This file has some words and character pairs that show the kerning of dcaron + or lcaron followed by other letters. + +kern-word-list-cyrillic.txt + This file shows kerning for some Russian words and groups of Cyrillic + letters. |