+++ /dev/null
-/*
- * see COPYRIGHT
- */
-
-
-/* glyph entry, one drawing command */
-typedef struct gentry {
- /* this list links all GENTRYs of a GLYPH sequentially */
- struct gentry *next; /* double linked list */
- struct gentry *prev;
-
- /* this list links all GENTRYs of one contour -
- * of types GE_LINE and GE_CURVE only
- * bkwd is also reused: in the very first entry (normally
- * of type GE_MOVE) it points to g->entries
- */
- struct gentry *cntr[2]; /* double-linked circular list */
-/* convenience handles */
-#define bkwd cntr[0]
-#define frwd cntr[1]
-
- /* various extended structures used at some stage of transformation */
- void *ext;
-
- union {
- struct {
- int val[2][3]; /* integer values */
- } i;
- struct {
- double val[2][3]; /* floating values */
- } f;
- } points; /* absolute values, NOT deltas */
-/* convenience handles */
-#define ipoints points.i.val
-#define fpoints points.f.val
-#define ixn ipoints[0]
-#define iyn ipoints[1]
-#define fxn fpoints[0]
-#define fyn fpoints[1]
-#define ix1 ixn[0]
-#define ix2 ixn[1]
-#define ix3 ixn[2]
-#define iy1 iyn[0]
-#define iy2 iyn[1]
-#define iy3 iyn[2]
-#define fx1 fxn[0]
-#define fx2 fxn[1]
-#define fx3 fxn[2]
-#define fy1 fyn[0]
-#define fy2 fyn[1]
-#define fy3 fyn[2]
-
- char flags;
-#define GEF_FLOAT 0x02 /* entry contains floating point data */
-#define GEF_LINE 0x04 /* entry looks like a line even if it's a curve */
-
- unsigned char dir; /* used to temporarily store the values for
- * the directions of the ends of curves */
-/* front end */
-#define CVDIR_FUP 0x02 /* goes over the line connecting the ends */
-#define CVDIR_FEQUAL 0x01 /* coincides with the line connecting the
- * ends */
-#define CVDIR_FDOWN 0x00 /* goes under the line connecting the ends */
-#define CVDIR_FRONT 0x0F /* mask of all front directions */
-/* rear end */
-#define CVDIR_RSAME 0x30 /* is the same as for the front end */
-#define CVDIR_RUP 0x20 /* goes over the line connecting the ends */
-#define CVDIR_REQUAL 0x10 /* coincides with the line connecting the
- * ends */
-#define CVDIR_RDOWN 0x00 /* goes under the line connecting the ends */
-#define CVDIR_REAR 0xF0 /* mask of all rear directions */
-
- signed char stemid; /* connection to the substituted stem group */
- char type;
-#define GE_HSBW 'B'
-#define GE_MOVE 'M'
-#define GE_LINE 'L'
-#define GE_CURVE 'C'
-#define GE_PATH 'P'
-
- /* indexes of the points to be used for calculation of the tangents */
- signed char ftg; /* front tangent */
- signed char rtg; /* rear tangent, -1 means "idx 2 of the previous entry" */
-} GENTRY;
-
-/* stem structure, describes one [hv]stem */
-/* acually, it describes one border of a stem */
-/* the whole stem is a pair of these structures */
-
-typedef struct stem {
- short value; /* value of X or Y coordinate */
- short origin; /* point of origin for curve stems */
- GENTRY *ge; /* entry that has (value, origin) as its first dot */
- /* also for all the stems the couple (value, origin)
- * is used to determine whether a stem is relevant for a
- * line, it's considered revelant if this tuple is
- * equal to any of the ends of the line.
- * ge is also used to resolve ambiguity if there is more than
- * one line going through certain pointi, it is used to
- * distinguish these lines.
- */
-
- short from, to; /* values of other coordinate between
- * which this stem is valid */
-
- short flags;
- /* ordering of ST_END, ST_FLAT, ST_ZONE is IMPORTANT for sorting */
-#define ST_END 0x01 /* end of line, lowest priority */
-#define ST_FLAT 0x02 /* stem is defined by a flat line, not a
- * curve */
-#define ST_ZONE 0x04 /* pseudo-stem, the limit of a blue zone */
-#define ST_UP 0x08 /* the black area is to up or right from
- * value */
-#define ST_3 0x20 /* first stem of [hv]stem3 */
-#define ST_BLUE 0x40 /* stem is in blue zone */
-#define ST_TOPZONE 0x80 /* 1 - top zone, 0 - bottom zone */
-#define ST_VERT 0x100 /* vertical stem (used in substitutions) */
-} STEM;
-
-#define MAX_STEMS 2000 /* we can't have more stems than path
- * elements (or hope so) */
-#define NSTEMGRP 50 /* maximal number of the substituted stem groups */
-
-/* structure for economical representation of the
- * substituted stems
- */
-
-typedef struct stembounds {
- short low; /* low bound */
- short high; /* high bound */
- char isvert; /* 1 - vertical, 0 - horizontal */
- char already; /* temp. flag: is aleready included */
-} STEMBOUNDS;
-
-struct kern {
- unsigned id; /* ID of the second glyph */
- int val; /* kerning value */
-};
-
-typedef struct contour {
- short ymin, xofmin;
- short inside; /* inside which contour */
- char direction;
-#define DIR_OUTER 1
-#define DIR_INNER 0
-} CONTOUR;
-
-typedef struct glyph {
- int char_no;/* Encoding of glyph */
- int orig_code;/* code of glyph in the font's original encoding */
- char *name; /* Postscript name of glyph */
- int xMin, yMin, xMax, yMax; /* values from TTF dictionary */
- int lsb; /* left sidebearing */
- int ttf_pathlen; /* total length of TTF paths */
- short width;
- short flags;
-#define GF_USED 0x0001 /* whether is this glyph used in T1 font */
-#define GF_FLOAT 0x0002 /* thys glyph contains floating point entries */
-
- GENTRY *entries;/* doube linked list of entries */
- GENTRY *lastentry; /* the last inserted entry */
- GENTRY *path; /* beggining of the last path */
- int oldwidth; /* actually also scaled */
- int scaledwidth;
-#define MAXLEGALWIDTH 10000
-
- struct kern *kern; /* kerning data */
- int kerncount; /* number of kerning pairs */
- int kernalloc; /* for how many pairs we have space */
-
- STEM *hstems; /* global horiz. and vert. stems */
- STEM *vstems;
- int nhs, nvs; /* numbers of stems */
-
- STEMBOUNDS *sbstems; /* substituted stems for all the groups */
- short *nsbs; /* indexes of the group ends in the common array */
- int nsg; /* actual number of the stem groups */
- int firstsubr; /* first substistuted stems subroutine number */
-
- CONTOUR *contours; /* it is not used now */
- int ncontours;
-
- int rymin, rymax; /* real values */
- /* do we have flat surfaces on top/bottom */
- char flatymin, flatymax;
-
-} GLYPH;
-
-/* description of a dot for calculation of its distance to a curve */
-
-struct dot_dist {
- double p[2 /*X,Y*/]; /* coordinates of a dot */
- double dist2; /* squared distance from the dot to the curve */
- short seg; /* the closest segment of the curve */
-};
-
-extern int stdhw, stdvw; /* dominant stems widths */
-extern int stemsnaph[12], stemsnapv[12]; /* most typical stem width */
-
-extern int bluevalues[14];
-extern int nblues;
-extern int otherblues[10];
-extern int notherb;
-extern int bbox[4]; /* the FontBBox array */
-extern double italic_angle;
-
-extern GLYPH *glyph_list;
-extern int encoding[]; /* inverse of glyph[].char_no */
-
-/* prototypes of functions */
-void rmoveto( int dx, int dy);
-void rlineto( int dx, int dy);
-void rrcurveto( int dx1, int dy1, int dx2, int dy2, int dx3, int dy3);
-void assertpath( GENTRY * from, char *file, int line, char *name);
-
-void fg_rmoveto( GLYPH * g, double x, double y);
-void ig_rmoveto( GLYPH * g, int x, int y);
-void fg_rlineto( GLYPH * g, double x, double y);
-void ig_rlineto( GLYPH * g, int x, int y);
-void fg_rrcurveto( GLYPH * g, double x1, double y1,
- double x2, double y2, double x3, double y3);
-void ig_rrcurveto( GLYPH * g, int x1, int y1,
- int x2, int y2, int x3, int y3);
-void g_closepath( GLYPH * g);
-
-void pathtoint( GLYPH *g);
-void ffixquadrants( GLYPH *g);
-void flattencurves( GLYPH * g);
-int checkcv( GENTRY * ge, int dx, int dy);
-void iclosepaths( GLYPH * g);
-void fclosepaths( GLYPH * g);
-void smoothjoints( GLYPH * g);
-void buildstems( GLYPH * g);
-void fstraighten( GLYPH * g);
-void istraighten( GLYPH * g, int zigonly);
-void isplitzigzags( GLYPH * g);
-void fsplitzigzags( GLYPH * g);
-void fforceconcise( GLYPH * g);
-void iforceconcise( GLYPH * g);
-void reversepathsfromto( GENTRY * from, GENTRY * to);
-void reversepaths( GLYPH * g);
-void dumppaths( GLYPH * g, GENTRY *start, GENTRY *end);
-void print_glyph( int glyphno);
-int print_glyph_subs( int glyphno, int startid);
-void print_glyph_metrics( int code, int glyphno);
-void findblues(void);
-void stemstatistics(void);
-void docorrectwidth(void);
-void addkernpair( unsigned id1, unsigned id2, int unscval);
-void print_kerning( FILE *afm_file);
-
-int fcrossrayscv( double curve[4][2], double *max1, double *max2);
-int fcrossraysge( GENTRY *ge1, GENTRY *ge2, double *max1, double *max2,
- double crossdot[2][2]);
-double fdotsegdist2( double seg[2][2], double dot[2]);
-double fdotcurvdist2( double curve[4][2], struct dot_dist *dots, int ndots, double *maxp);
-void fapproxcurve( double cv[4][2], struct dot_dist *dots, int ndots);
git.asbjorn.biz / swftools.git / blobdiff