[Git][freetype/freetype][master] * src/base/ftsynth.c (FT_GlyphSlot_Slant): Add vertical slant.

[Alexei Podtelezhnikov (@apodtele)]

Alexei Podtelezhnikov pushed to branch master at FreeType / FreeType

Commits:

• 27b2cd41
  by Alexei Podtelezhnikov at 2023-02-07T23:03:18-05:00

  * src/base/ftsynth.c (FT_GlyphSlot_Slant): Add vertical slant.
  * include/freetype/ftsynth.h (FT_GlyphSlot_Slant): Update it.
  

2 changed files:

• include/freetype/ftsynth.h
• src/base/ftsynth.c

Changes:

include/freetype/ftsynth.h

---

...	...	@@ -72,10 +72,12 @@ FT_BEGIN_HEADER
72	72	FT_EXPORT( void )
73	73	FT_GlyphSlot_Oblique( FT_GlyphSlot slot );
74	74
75		- /* Slant an outline glyph by a given sine of an angle. */
	75	+ /* Slant an outline glyph by a given sine of an angle. You can apply */
	76	+ /* slant along either x- or y-axis. */
76	77	FT_EXPORT( void )
77	78	FT_GlyphSlot_Slant( FT_GlyphSlot slot,
78		- FT_Fixed slant );
	79	+ FT_Fixed xslant,
	80	+ FT_Fixed yslant );
79	81
80	82	/* */
81	83

src/base/ftsynth.c

---

...	...	@@ -47,7 +47,7 @@
47	47	FT_GlyphSlot_Oblique( FT_GlyphSlot slot )
48	48	{
49	49	/* Value '0x0366A' corresponds to a shear angle of about 12 degrees. */
50		- FT_GlyphSlot_Slant( slot, 0x0366A );
	50	+ FT_GlyphSlot_Slant( slot, 0x0366A, 0 );
51	51	}
52	52
53	53
...	...	@@ -55,7 +55,8 @@
55	55
56	56	FT_EXPORT_DEF( void )
57	57	FT_GlyphSlot_Slant( FT_GlyphSlot slot,
58		- FT_Fixed slant )
	58	+ FT_Fixed xslant,
	59	+ FT_Fixed yslant )
59	60	{
60	61	FT_Matrix transform;
61	62	FT_Outline* outline;
...	...	@@ -74,9 +75,9 @@
74	75
75	76	/* For italic, simply apply a shear transform */
76	77	transform.xx = 0x10000L;
77		- transform.yx = 0x00000L;
	78	+ transform.yx = -yslant;
78	79
79		- transform.xy = slant;
	80	+ transform.xy = xslant;
80	81	transform.yy = 0x10000L;
81	82
82	83	FT_Outline_Transform( outline, &transform );

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