>From the CHANGES file:
- A new auto-hinter property `warping' can switch on and off the
warping code if this experimental feature is compiled in (by
defining the AF_CONFIG_OPTION_USE_WARPER configuration option).
The AF_CONFIG_OPTION_USE_WARPER option itself is an old feature,
available since 2006. Warping only works in `light'
auto-hinting mode. The idea of the code is to slightly scale
and shift a glyph along the non-hinted dimension (which is
usually the horizontal axis) so that as much of its segments are
aligned (more or less) to the grid. To find out a glyph's
optimal scaling and shifting value, various parameter
combinations are tried and scored.
See file `ftautoh.h' for more; the demo programs `ftdiff',
`ftview', and `ftgrid' can toggle warping with key `w'.
Please test!
Werner
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