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include curve control points in extents 

this makes results consistent with FT
also optimized handling of path end points
This commit is contained in:
Michiharu Ariza 2018-09-17 15:34:39 -07:00
parent 98b94f8ba5
commit e75e7224c9
2 changed files with 28 additions and 5 deletions
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6
src/hb-cff-interp-cs-common.hh
View File

@ -408,21 +408,21 @@ struct PathProcs
const Number &dy = env.argStack.pop ();
const Number &dx = env.argStack.pop ();
pt1.move (dx, dy);
env.moveto (pt1);
PATH::moveto (env, param, pt1);
}
static inline void hmoveto (ENV &env, PARAM& param)
{
Point pt1 = env.get_pt ();
pt1.move_x (env.argStack.pop ());
env.moveto (pt1);
PATH::moveto (env, param, pt1);
}
static inline void vmoveto (ENV &env, PARAM& param)
{
Point pt1 = env.get_pt ();
pt1.move_y (env.argStack.pop ());
env.moveto (pt1);
PATH::moveto (env, param, pt1);
}
static inline void rlineto (ENV &env, PARAM& param)

27
src/hb-ot-cff1-table.cc
View File

@ -136,12 +136,17 @@ struct ExtentsParam
{
inline void init (void)
{
path_open = false;
min_x.set_int (0x7FFFFFFF);
min_y.set_int (0x7FFFFFFF);
max_x.set_int (-0x80000000);
max_y.set_int (-0x80000000);
}
inline void start_path (void) { path_open = true; }
inline void end_path (void) { path_open = false; }
inline bool is_path_open (void) const { return path_open; }
inline void update_bounds (const Point &pt)
{
if (pt.x < min_x) min_x = pt.x;
@ -150,6 +155,7 @@ struct ExtentsParam
if (pt.y > max_y) max_y = pt.y;
}
bool path_open;
Number min_x;
Number min_y;
Number max_x;
@ -158,16 +164,33 @@ struct ExtentsParam
struct CFF1PathProcs_Extents : PathProcs<CFF1PathProcs_Extents, CFF1CSInterpEnv, ExtentsParam>
{
static inline void moveto (CFF1CSInterpEnv &env, ExtentsParam& param, const Point &pt)
{
param.end_path ();
env.moveto (pt);
}
static inline void line (CFF1CSInterpEnv &env, ExtentsParam& param, const Point &pt1)
{
param.update_bounds (env.get_pt ());
if (!param.is_path_open ())
{
param.start_path ();
param.update_bounds (env.get_pt ());
}
env.moveto (pt1);
param.update_bounds (env.get_pt ());
}
static inline void curve (CFF1CSInterpEnv &env, ExtentsParam& param, const Point &pt1, const Point &pt2, const Point &pt3)
{
param.update_bounds (env.get_pt ());
if (!param.is_path_open ())
{
param.start_path ();
param.update_bounds (env.get_pt ());
}
/* include control points */
param.update_bounds (pt1);
param.update_bounds (pt2);
env.moveto (pt3);
param.update_bounds (env.get_pt ());
}