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[VarComposite] Optimize rotate()

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This commit is contained in:
Behdad Esfahbod 2023-04-27 11:51:42 -06:00
parent 4e256f5a57
commit 070f837be6
3 changed files with 10 additions and 3 deletions
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2
configure.ac
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@ -68,7 +68,7 @@ GTK_DOC_CHECK([1.15],[--flavour no-tmpl])
])
# Functions and headers
AC_CHECK_FUNCS(atexit mprotect sysconf getpagesize mmap isatty newlocale uselocale)
AC_CHECK_FUNCS(atexit mprotect sysconf getpagesize mmap isatty newlocale uselocale sincosf)
AC_CHECK_HEADERS(unistd.h sys/mman.h stdbool.h xlocale.h)
# Compiler flags

1
meson.build
View file

@ -75,6 +75,7 @@ check_funcs = [
['isatty'],
['uselocale'],
['newlocale'],
['sincosf'],
]
m_dep = cpp.find_library('m', required: false)

10
src/OT/glyf/VarCompositeGlyph.hh
View file

@ -155,8 +155,14 @@ struct VarCompositeGlyphRecord
{
// https://github.com/fonttools/fonttools/blob/f66ee05f71c8b57b5f519ee975e95edcd1466e14/Lib/fontTools/misc/transform.py#L240
rotation = rotation * HB_PI;
float c = cosf (rotation);
float s = sinf (rotation);
float c;
float s;
#if HAVE_SINCOSF
sincosf (rotation, &s, &c);
#else
c = cosf (rotation);
s = sinf (rotation);
#endif
float other[6] = {c, s, -s, c, 0.f, 0.f};
transform (matrix, trans, other);
}