diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-subset-instancer-solver.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-subset-instancer-solver.hh | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/thirdparty/harfbuzz/src/hb-subset-instancer-solver.hh b/thirdparty/harfbuzz/src/hb-subset-instancer-solver.hh index b1f8594937..563fccbb59 100644 --- a/thirdparty/harfbuzz/src/hb-subset-instancer-solver.hh +++ b/thirdparty/harfbuzz/src/hb-subset-instancer-solver.hh @@ -27,6 +27,21 @@ #include "hb.hh" +/* pre-normalized distances */ +struct TripleDistances +{ + TripleDistances (): negative (1.f), positive (1.f) {} + TripleDistances (float neg_, float pos_): negative (neg_), positive (pos_) {} + TripleDistances (float min, float default_, float max) + { + negative = default_ - min; + positive = max - default_; + } + + float negative; + float positive; +}; + struct Triple { Triple () : @@ -66,6 +81,7 @@ struct Triple { return current; } + float minimum; float middle; float maximum; @@ -74,6 +90,12 @@ struct Triple { using result_item_t = hb_pair_t<float, Triple>; using result_t = hb_vector_t<result_item_t>; +/* renormalize a normalized value v to the range of an axis, + * considering the prenormalized distances as well as the new axis limits. + * Ported from fonttools */ +HB_INTERNAL float renormalizeValue (float v, const Triple &triple, + const TripleDistances &triple_distances, + bool extrapolate = true); /* Given a tuple (lower,peak,upper) "tent" and new axis limits * (axisMin,axisDefault,axisMax), solves how to represent the tent * under the new axis configuration. All values are in normalized @@ -85,6 +107,6 @@ using result_t = hb_vector_t<result_item_t>; * If tent value is Triple{}, that is a special deltaset that should * be always-enabled (called "gain"). */ -HB_INTERNAL result_t rebase_tent (Triple tent, Triple axisLimit); +HB_INTERNAL result_t rebase_tent (Triple tent, Triple axisLimit, TripleDistances axis_triple_distances); #endif /* HB_SUBSET_INSTANCER_SOLVER_HH */ |