ref: 8dd9e9675d117e5e5d1c8cae84847b3c84daeb53
parent: 4a62922bf8b8d9309db2ae8431469ee2b8cd7adf
author: Werner Lemberg <[email protected]>
date: Sun Mar 12 06:47:20 EDT 2017
Document `GX_BlendRec'.
--- a/src/truetype/ttgxvar.h
+++ b/src/truetype/ttgxvar.h
@@ -214,16 +214,83 @@
/* */
/* <Description> */
/* Data for interpolating a font from a distortable font specified */
- /* by the GX *var tables ([fgca]var). */
+ /* by the GX *var tables ([fgcahvm]var). */
/* */
/* <Fields> */
- /* num_axis :: The number of axes along which interpolation */
- /* may happen */
+ /* num_axis :: */
+ /* The number of axes along which interpolation may happen. */
/* */
- /* normalizedcoords :: A normalized value (between [-1,1]) indicating */
- /* the contribution along each axis to the final */
- /* interpolated font. */
+ /* normalizedcoords :: */
+ /* An array of normalized values (between [-1,1]) indicating the */
+ /* contribution along each axis to the final interpolated font. */
+ /* `coords' holds the same values. */
/* */
+ /* mmvar :: */
+ /* Data from the `fvar' table. */
+ /* */
+ /* mmvar_len :: */
+ /* The length of the `mmvar' structure. */
+ /* */
+ /* normalized_stylecoords :: */
+ /* A two-dimensional array that holds the named instance data from */
+ /* `mmvar' as normalized values. */
+ /* */
+ /* avar_loaded :: */
+ /* A Boolean; if set, FreeType tried to load (and parse) the `avar' */
+ /* table. */
+ /* */
+ /* avar_segment :: */
+ /* Data from the `avar' table. */
+ /* */
+ /* hvar_loaded :: */
+ /* A Boolean; if set, FreeType tried to load (and parse) the `hvar' */
+ /* table. */
+ /* */
+ /* hvar_checked :: */
+ /* A Boolean; if set, FreeType successfully loaded and parsed the */
+ /* `hvar' table. */
+ /* */
+ /* hvar_error :: */
+ /* If loading and parsing of the `hvar' table failed, this field */
+ /* holds the corresponding error code. */
+ /* */
+ /* hvar_table :: */
+ /* Data from the `hvar' table. */
+ /* */
+ /* vvar_loaded :: */
+ /* A Boolean; if set, FreeType tried to load (and parse) the `vvar' */
+ /* table. */
+ /* */
+ /* vvar_checked :: */
+ /* A Boolean; if set, FreeType successfully loaded and parsed the */
+ /* `vvar' table. */
+ /* */
+ /* vvar_error :: */
+ /* If loading and parsing of the `vvar' table failed, this field */
+ /* holds the corresponding error code. */
+ /* */
+ /* vvar_table :: */
+ /* Data from the `vvar' table. */
+ /* */
+ /* mvar_table :: */
+ /* Data from the `mvar' table. */
+ /* */
+ /* tuplecount :: */
+ /* The number of shared tuples in the `gvar' table. */
+ /* */
+ /* tuplecoords :: */
+ /* A two-dimensional array that holds the shared tuple coordinates */
+ /* in the `gvar' table. */
+ /* */
+ /* gv_glyphcnt :: */
+ /* The number of glyphs handled in the `gvar' table. */
+ /* */
+ /* glyphoffsets :: */
+ /* Offsets into the glyph variation data array. */
+ /* */
+ /* gvar_size :: */
+ /* The size of the `gvar' table. */
+ /* */
typedef struct GX_BlendRec_
{FT_UInt num_axis;
@@ -236,7 +303,7 @@
/* normalized_stylecoords[num_namedstyles][num_axis] */
FT_Bool avar_loaded;
- GX_AVarSegment avar_segment;
+ GX_AVarSegment avar_segment; /* avar_segment[num_axis] */
FT_Bool hvar_loaded;
FT_Bool hvar_checked;
@@ -250,11 +317,11 @@
GX_MVarTable mvar_table;
- FT_UInt tuplecount; /* shared tuples in `gvar' */
- FT_Fixed* tuplecoords; /* tuplecoords[tuplecount][num_axis] */
+ FT_UInt tuplecount;
+ FT_Fixed* tuplecoords; /* tuplecoords[tuplecount][num_axis] */
FT_UInt gv_glyphcnt;
- FT_ULong* glyphoffsets;
+ FT_ULong* glyphoffsets; /* glyphoffsets[gv_glyphcnt + 1] */
FT_ULong gvar_size;