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draw.c
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/*
* Drawing functions.
*
* This file is part of abcm2ps.
*
* Copyright (C) 1998-2015 Jean-François Moine
* Adapted from abc2ps, Copyright (C) 1996,1997 Michael Methfessel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "abc2ps.h"
struct BEAM { /* packages info on one beam */
struct SYMBOL *s1, *s2;
float a, b;
short nflags;
};
static char *acc_tb[] = { "", "sh", "nt", "ft", "dsh", "dft" };
/* scaling stuff */
static int scale_voice; /* staff (0) or voice(1) scaling */
static float cur_scale = 1; /* voice or staff scale */
static float cur_trans = 0; /* != 0 when scaled staff */
static float cur_staff = 1; /* current scaled staff */
static void draw_note(float x,
struct SYMBOL *s,
int fl);
static void set_tie_room(void);
/* output debug annotations */
static void anno_out(struct SYMBOL *s, char type)
{
if (s->as.linenum == 0)
return;
if (mbf[-1] != '\n')
*mbf++ = '\n';
a2b("%%A %c %d %d ", type, s->as.linenum, s->as.colnum);
putxy(s->x - s->wl - 2, staff_tb[s->staff].y + s->ymn - 2);
if (type != 'b' && type != 'e') /* if not beam */
a2b("%.1f %d", s->wl + s->wr + 4, s->ymx - s->ymn + 4);
a2b("\n");
}
/* -- up/down shift needed to get k*6 -- */
static float rnd6(float y)
{
int iy;
iy = ((int) (y + 2.999) + 12) / 6 * 6 - 12;
return iy - y;
}
/* -- compute the best vertical offset for the beams -- */
static float b_pos(int grace,
int stem,
int flags,
float b)
{
float d1, d2, shift, depth;
float top, bot;
shift = !grace ? BEAM_SHIFT : 3;
depth = !grace ? BEAM_DEPTH : 1.7;
if (stem > 0) {
bot = b - (flags - 1) * shift - depth;
if (bot > 26)
return 0;
top = b;
} else {
top = b + (flags - 1) * shift + depth;
if (top < -2)
return 0;
bot = b;
}
d1 = rnd6(top - BEAM_OFFSET);
d2 = rnd6(bot + BEAM_OFFSET);
if (d1 * d1 > d2 * d2)
return d2;
return d1;
}
/* duplicate a note for beaming continuation */
static struct SYMBOL *sym_dup(struct SYMBOL *s_orig)
{
struct SYMBOL *s;
s = (struct SYMBOL *) getarena(sizeof *s);
memcpy(s, s_orig, sizeof *s);
s->as.flags |= ABC_F_INVIS;
s->as.text = NULL;
memset(s->as.u.note.sl1, 0, sizeof s->as.u.note.sl1);
memset(s->as.u.note.decs, 0, sizeof s->as.u.note.decs);
memset(&s->as.u.note.dc, 0, sizeof s->as.u.note.dc);
s->gch = NULL;
s->ly = NULL;
return s;
}
/* -- calculate a beam -- */
/* (the staves may be defined or not) */
static int calculate_beam(struct BEAM *bm,
struct SYMBOL *s1)
{
struct SYMBOL *s, *s2;
int notes, nflags, staff, voice, two_staves, two_dir;
float x, y, ys, a, b, max_stem_err;
float sx, sy, sxx, sxy, syy, a0, stem_xoff, scale;
static float min_tb[2][6] = {
{STEM_MIN, STEM_MIN,
STEM_MIN2, STEM_MIN3, STEM_MIN4, STEM_MIN4},
{STEM_CH_MIN, STEM_CH_MIN,
STEM_CH_MIN2, STEM_CH_MIN3, STEM_CH_MIN4, STEM_CH_MIN4}
};
/* must have one printed note head */
if (s1->as.flags & ABC_F_INVIS) {
if (!s1->next
|| (s1->next->as.flags & ABC_F_INVIS))
return 0;
}
if (!(s1->sflags & S_BEAM_ST)) { /* beam from previous music line */
s = sym_dup(s1);
s1->prev->next = s;
s->prev = s1->prev;
s1->prev = s;
s->next = s1;
s1->ts_prev->ts_next = s;
s->ts_prev = s1->ts_prev;
s1->ts_prev = s;
s->ts_next = s1;
s->x -= 12;
if (s->x > s1->prev->x + 12)
s->x = s1->prev->x + 12;
s->sflags &= S_SEQST;
s->sflags |= S_BEAM_ST | S_TEMP;
s->as.u.note.slur_st = 0;
s->as.u.note.slur_end = 0;
s1 = s;
}
/* search last note in beam */
notes = nflags = 0; /* set x positions, count notes and flags */
two_staves = two_dir = 0;
staff = s1->staff;
voice = s1->voice;
stem_xoff = (s1->as.flags & ABC_F_GRACE) ? GSTEM_XOFF : STEM_XOFF;
for (s2 = s1; ; s2 = s2->next) {
if (s2->as.type == ABC_T_NOTE) {
if (s2->nflags > nflags)
nflags = s2->nflags;
notes++;
if (s2->staff != staff)
two_staves = 1;
if (s2->stem != s1->stem)
two_dir = 1;
if (s2->sflags & S_BEAM_END)
break;
}
if (!s2->next) { /* beam towards next music line */
for (; ; s2 = s2->prev) {
if (s2->as.type == ABC_T_NOTE)
break;
}
s = sym_dup(s2);
s->next = s2->next;
if (s->next)
s->next->prev = s;
s2->next = s;
s->prev = s2;
s->ts_next = s2->ts_next;
if (s->ts_next)
s->ts_next->ts_prev = s;
s2->ts_next = s;
s->ts_prev = s2;
s->sflags &= S_SEQST;
s->sflags |= S_BEAM_END | S_TEMP;
s->as.u.note.slur_st = 0;
s->as.u.note.slur_end = 0;
s->x += 12;
if (s->x < realwidth - 12)
s->x = realwidth - 12;
s2 = s;
notes++;
break;
}
}
bm->s2 = s2; /* (don't display the flags) */
if (staff_tb[staff].y == 0) { /* staves not defined */
if (two_staves)
return 0;
} else { /* staves defined */
if (!two_staves && !(s1->as.flags & ABC_F_GRACE)) {
bm->s1 = s1; /* beam already calculated */
bm->a = (s1->ys- s2->ys) / (s1->xs - s2->xs);
bm->b = s1->ys - s1->xs * bm->a
+ staff_tb[staff].y;
bm->nflags = nflags;
return 1;
}
}
sx = sy = sxx = sxy = syy = 0; /* linear fit through stem ends */
for (s = s1; ; s = s->next) {
if (s->as.type != ABC_T_NOTE)
continue;
if ((scale = voice_tb[s->voice].scale) == 1)
scale = staff_tb[s->staff].clef.staffscale;
if (s->stem >= 0)
x = stem_xoff + s->shhd[0];
else
x = -stem_xoff + s->shhd[s->nhd];
x *= scale;
x += s->x;
s->xs = x;
y = s->ys + staff_tb[s->staff].y;
sx += x; sy += y;
sxx += x * x; sxy += x * y; syy += y * y;
if (s == s2)
break;
}
/* beam fct: y=ax+b */
a = (sxy * notes - sx * sy) / (sxx * notes - sx * sx);
b = (sy - a * sx) / notes;
/* the next few lines modify the slope of the beam */
if (!(s1->as.flags & ABC_F_GRACE)) {
if (notes >= 3) {
float hh;
hh = syy - a * sxy - b * sy; /* flatten if notes not in line */
if (hh > 0
&& hh / (notes - 2) > .5)
a *= BEAM_FLATFAC;
}
if (a >= 0)
a = BEAM_SLOPE * a / (BEAM_SLOPE + a); /* max steepness for beam */
else
a = BEAM_SLOPE * a / (BEAM_SLOPE - a);
} else {
if (a > BEAM_SLOPE)
a = BEAM_SLOPE;
else if (a < -BEAM_SLOPE)
a = -BEAM_SLOPE;
}
/* to decide if to draw flat etc. use normalized slope a0 */
a0 = a * (s2->xs - s1->xs) / (20 * (notes - 1));
if (a0 * a0 < BEAM_THRESH * BEAM_THRESH)
a = 0; /* flat below threshhold */
b = (sy - a * sx) / notes; /* recalculate b for new slope */
/* if (nflags>1) b=b+2*stem;*/ /* leave a bit more room if several beams */
/* have flat beams when asked */
if (cfmt.flatbeams) {
if (!(s1->as.flags & ABC_F_GRACE))
b = -11 + staff_tb[staff].y;
else
b = 35 + staff_tb[staff].y;
a = 0;
}
/*fixme: have a look again*/
/* have room for the symbols in the staff */
max_stem_err = 0; /* check stem lengths */
s = s1;
if (two_dir) { /* 2 directions */
/*fixme: more to do*/
if (!(s1->as.flags & ABC_F_GRACE))
ys = BEAM_SHIFT;
else
ys = 3;
ys *= (nflags - 1);
ys += BEAM_DEPTH;
ys *= .5;
if (s1->stem != s2->stem && s1->nflags < s2->nflags)
ys *= s2->stem;
else
ys *= s1->stem;
b += ys;
} else if (!(s1->as.flags & ABC_F_GRACE)) { /* normal notes */
float stem_err, beam_h;
beam_h = BEAM_DEPTH + BEAM_SHIFT * (nflags - 1);
while (s->ts_prev->as.type == ABC_T_NOTE
&& s->ts_prev->time == s->time
&& s->ts_prev->x > s1->xs)
s = s->ts_prev;
for (; s && s->time <= s2->time; s = s->ts_next) {
if (s->as.type != ABC_T_NOTE
|| (s->as.flags & ABC_F_INVIS)
|| (s->staff != staff
&& s->voice != voice)) {
continue;
}
x = s->voice == voice ? s->xs : s->x;
ys = a * x + b - staff_tb[s->staff].y;
if (s->voice == voice) {
if (s->nhd == 0)
stem_err = min_tb[0][(unsigned) s->nflags];
else
stem_err = min_tb[1][(unsigned) s->nflags];
if (s->stem > 0) {
if (s->pits[s->nhd] > 26) {
stem_err -= 2;
if (s->pits[s->nhd] > 28)
stem_err -= 2;
}
stem_err -= ys - (float) (3 * (s->pits[s->nhd] - 18));
} else {
if (s->pits[0] < 18) {
stem_err -= 2;
if (s->pits[0] < 16)
stem_err -= 2;
}
stem_err -= (float) (3 * (s->pits[0] - 18)) - ys;
}
stem_err += BEAM_DEPTH + BEAM_SHIFT * (s->nflags - 1);
} else {
/*fixme: KO when two_staves*/
if (s1->stem > 0) {
if (s->stem > 0) {
/*fixme: KO when the voice numbers are inverted*/
if (s->ymn > ys + 4
|| s->ymx < ys - beam_h - 2)
continue;
if (s->voice > voice)
stem_err = s->ymx - ys;
else
stem_err = s->ymn + 8 - ys;
} else {
stem_err = s->ymx - ys;
}
} else {
if (s->stem < 0) {
if (s->ymx < ys - 4
|| s->ymn > ys - beam_h - 2)
continue;
if (s->voice < voice)
stem_err = ys - s->ymn;
else
stem_err = ys - s->ymx + 8;
} else {
stem_err = ys - s->ymn;
}
}
stem_err += 2 + beam_h;
}
if (stem_err > max_stem_err)
max_stem_err = stem_err;
}
} else { /* grace notes */
for ( ; ; s = s->next) {
float stem_err;
ys = a * s->xs + b - staff_tb[s->staff].y;
stem_err = GSTEM - 2;
if (s->stem > 0)
stem_err -= ys - (float) (3 * (s->pits[s->nhd] - 18));
else
stem_err += ys - (float) (3 * (s->pits[0] - 18));
stem_err += 3 * (s->nflags - 1);
if (stem_err > max_stem_err)
max_stem_err = stem_err;
if (s == s2)
break;
}
}
if (max_stem_err > 0) /* shift beam if stems too short */
b += s1->stem * max_stem_err;
/* have room for the gracenotes, bars and clefs */
/*fixme: test*/
if (!two_staves && !two_dir)
for (s = s1->next; ; s = s->next) {
struct SYMBOL *g;
switch (s->type) {
case NOTEREST: /* cannot move rests in multi-voices */
if (s->as.type != ABC_T_REST)
break;
g = s->ts_next;
if (!g || g->staff != staff
|| g->type != NOTEREST)
break;
//fixme:too much vertical shift if some space above the note
//fixme:this does not fix rest under beam in second voice (ts_prev)
/*fall thru*/
case BAR:
#if 1
if (s->as.flags & ABC_F_INVIS)
#else
//??
if (!(s->as.flags & ABC_F_INVIS))
#endif
break;
/*fall thru*/
case CLEF:
y = a * s->x + b;
if (s1->stem > 0) {
y = s->ymx - y
+ BEAM_DEPTH + BEAM_SHIFT * (nflags - 1)
+ 2;
if (y > 0)
b += y;
} else {
y = s->ymn - y
- BEAM_DEPTH - BEAM_SHIFT * (nflags - 1)
- 2;
if (y < 0)
b += y;
}
break;
case GRACE:
g = s->extra;
for ( ; g; g = g->next) {
if (g->type != NOTEREST)
continue;
y = a * g->x + b;
if (s1->stem > 0) {
y = g->ymx - y
+ BEAM_DEPTH + BEAM_SHIFT * (nflags - 1)
+ 2;
if (y > 0)
b += y;
} else {
y = g->ymn - y
- BEAM_DEPTH - BEAM_SHIFT * (nflags - 1)
- 2;
if (y < 0)
b += y;
}
}
break;
}
if (s == s2)
break;
}
if (a == 0) /* shift flat beams onto staff lines */
b += b_pos(s1->as.flags & ABC_F_GRACE, s1->stem, nflags,
b - staff_tb[staff].y);
/* adjust final stems and rests under beam */
for (s = s1; ; s = s->next) {
float dy;
switch (s->as.type) {
case ABC_T_NOTE:
s->ys = a * s->xs + b - staff_tb[s->staff].y;
if (s->stem > 0) {
s->ymx = s->ys + 2.5;
//fixme: hack
if (s->ts_prev
&& s->ts_prev->stem > 0
&& s->ts_prev->staff == s->staff
&& s->ts_prev->ymn < s->ymx
&& s->ts_prev->x == s->x
&& s->shhd[0] == 0) {
s->ts_prev->x -= 5; /* fix stem clash */
s->ts_prev->xs -= 5;
}
} else {
s->ymn = s->ys - 2.5;
}
break;
case ABC_T_REST:
y = a * s->x + b - staff_tb[s->staff].y;
dy = BEAM_DEPTH + BEAM_SHIFT * (nflags - 1)
+ (s->head != H_FULL ? 4 : 9);
if (s1->stem > 0) {
y -= dy;
if (s1->multi == 0 && y > 12)
y = 12;
if (s->y <= y)
break;
} else {
y += dy;
if (s1->multi == 0 && y < 12)
y = 12;
if (s->y >= y)
break;
}
if (s->head != H_FULL) {
int iy;
iy = ((int) y + 3 + 12) / 6 * 6 - 12;
y = iy;
}
s->y = y;
break;
}
if (s == s2)
break;
}
/* save beam parameters */
if (staff_tb[staff].y == 0) /* if staves not defined */
return 0;
bm->s1 = s1;
bm->a = a;
bm->b = b;
bm->nflags = nflags;
return 1;
}
/* -- draw a single beam -- */
/* (the staves are defined) */
static void draw_beam(float x1,
float x2,
float dy,
float h,
struct BEAM *bm,
int n) /* beam number (1..n) */
{
struct SYMBOL *s;
float y1, dy2;
s = bm->s1;
if (n > s->nflags - s->u
&& (s->sflags & S_TREM2) && s->head != H_EMPTY) {
if (s->head >= H_OVAL) {
x1 = s->x + 6;
x2 = bm->s2->x - 6;
} else {
x1 += 5;
x2 -= 6;
}
}
y1 = bm->a * x1 + bm->b - dy;
x2 -= x1;
dy2 = bm->a * x2;
putf(h);
putx(x2);
putf(dy2);
putxy(x1, y1);
a2b("bm\n");
}
/* -- draw the beams for one word -- */
/* (the staves are defined) */
static void draw_beams(struct BEAM *bm)
{
struct SYMBOL *s, *s1, *s2;
int i, beam_dir;
float shift, bshift, bstub, bh, da;
s1 = bm->s1;
/*fixme: KO if many staves with different scales*/
set_scale(s1);
s2 = bm->s2;
if (!(s1->as.flags & ABC_F_GRACE)) {
bshift = BEAM_SHIFT;
bstub = BEAM_STUB;
shift = .34; /* (half width of the stem) */
bh = BEAM_DEPTH;
} else {
bshift = 3;
bstub = 3.2;
shift = .29;
bh = 1.6;
}
/*fixme: quick hack for stubs at end of beam and different stem directions*/
beam_dir = s1->stem;
if (s1->stem != s2->stem
&& s1->nflags < s2->nflags)
beam_dir = s2->stem;
if (beam_dir < 0)
bh = -bh;
if (cur_trans == 0 && cur_scale != 1) {
bm->a /= cur_scale;
bm->b = s1->ys - s1->xs * bm->a
+ staff_tb[s1->staff].y;
bshift *= cur_scale;
}
/* make first beam over whole word and adjust the stem lengths */
draw_beam(s1->xs - shift, s2->xs + shift, 0., bh, bm, 1);
da = 0;
for (s = s1; ; s = s->next) {
if (s->as.type == ABC_T_NOTE
&& s->stem != beam_dir)
s->ys = bm->a * s->xs + bm->b
- staff_tb[s->staff].y
+ bshift * (s->nflags - 1) * s->stem
- bh;
if (s == s2)
break;
}
if (s1->sflags & S_FEATHERED_BEAM) {
da = bshift / (s2->xs - s1->xs);
if (s1->dur > s2->dur) {
da = -da;
bshift = da * s1->xs;
} else {
bshift = da * s2->xs;
}
da = da * beam_dir;
}
/* other beams with two or more flags */
shift = 0;
for (i = 2; i <= bm->nflags; i++) {
shift += bshift;
if (da != 0)
bm->a += da;
for (s = s1; ; s = s->next) {
struct SYMBOL *k1, *k2;
float x1;
if (s->as.type != ABC_T_NOTE
|| s->nflags < i) {
if (s == s2)
break;
continue;
}
if ((s->sflags & S_TREM1)
&& i > s->nflags - s->u) {
if (s->head >= H_OVAL)
x1 = s->x;
else
x1 = s->xs;
draw_beam(x1 - 5, x1 + 5,
(shift + 2.5) * beam_dir,
bh, bm, i);
if (s == s2)
break;
continue;
}
k1 = s;
for (;;) {
if (s == s2)
break;
#if 1
if (s->next->type == NOTEREST) {
if (s->next->sflags & S_TREM1) {
if (s->next->nflags - s->next->u < i)
break;
} else if (s->next->nflags < i) {
break;
}
}
if ((s->next->sflags & S_BEAM_BR1)
|| ((s->next->sflags & S_BEAM_BR2) && i > 2))
break;
#else
if ((s->next->type == NOTEREST
&& s->next->nflags - s->next->u < i)
|| (s->next->sflags & S_BEAM_BR1)
|| ((s->next->sflags & S_BEAM_BR2)
&& i > 2))
break;
#endif
s = s->next;
}
k2 = s;
while (k2->as.type != ABC_T_NOTE)
k2 = k2->prev;
x1 = k1->xs;
if (k1 == k2) {
if (k1 == s1) {
x1 += bstub;
} else if (k1 == s2) {
x1 -= bstub;
} else if ((k1->sflags & S_BEAM_BR1)
|| ((k1->sflags & S_BEAM_BR2)
&& i > 2)) {
x1 += bstub;
} else {
struct SYMBOL *k;
k = k1->next;
while (k->as.type != ABC_T_NOTE)
k = k->next;
if ((k->sflags & S_BEAM_BR1)
|| ((k->sflags & S_BEAM_BR2)
&& i > 2)) {
x1 -= bstub;
} else {
k1 = k1->prev;
while (k1->as.type != ABC_T_NOTE)
k1 = k1->prev;
if (k1->nflags < k->nflags
|| (k1->nflags == k->nflags
&& k1->dots < k->dots))
x1 += bstub;
else
x1 -= bstub;
}
}
}
draw_beam(x1, k2->xs,
#if 1
shift * beam_dir,
#else
shift * k1->stem, /*fixme: more complicated */
#endif
bh, bm, i);
if (s == s2)
break;
}
}
if (s1->sflags & S_TEMP)
unlksym(s1);
else if (s2->sflags & S_TEMP)
unlksym(s2);
}
/* -- draw a system brace or bracket -- */
static void draw_sysbra(float x, int staff, int flag)
{
int i, end;
float yt, yb;
while (cursys->staff[staff].empty
|| staff_tb[staff].clef.stafflines == 0) {
if (cursys->staff[staff].flags & flag)
return;
staff++;
}
i = end = staff;
for (;;) {
if (!cursys->staff[i].empty
&& staff_tb[i].clef.stafflines != 0)
end = i;
if (cursys->staff[i].flags & flag)
break;
i++;
}
yt = staff_tb[staff].y + staff_tb[staff].topbar
* staff_tb[staff].clef.staffscale;
yb = staff_tb[end].y + staff_tb[end].botbar
* staff_tb[end].clef.staffscale;
a2b("%.1f %.1f %.1f %s\n",
yt - yb, x, yt,
(flag & (CLOSE_BRACE | CLOSE_BRACE2)) ? "brace" : "bracket");
}
/* -- draw the left side of the staves -- */
static void draw_lstaff(float x)
{
int i, j, l, nst;
float yb;
if (cfmt.alignbars)
return;
nst = cursys->nstaff;
l = 0;
for (i = 0; ; i++) {
if (cursys->staff[i].flags & (OPEN_BRACE | OPEN_BRACKET))
l++;
if (!cursys->staff[i].empty
&& staff_tb[i].clef.stafflines != 0)
break;
if (cursys->staff[i].flags & (CLOSE_BRACE | CLOSE_BRACKET))
l--;
if (i == nst)
break;
}
for (j = nst; j > i; j--) {
if (!cursys->staff[j].empty
&& staff_tb[j].clef.stafflines != 0)
break;
}
if (i == j && l == 0)
return;
set_sscale(-1);
yb = staff_tb[j].y + staff_tb[j].botbar
* staff_tb[j].clef.staffscale;
a2b("%.1f %.1f %.1f bar\n",
staff_tb[i].y
+ staff_tb[i].topbar * staff_tb[i].clef.staffscale
- yb,
x, yb);
for (i = 0; i <= nst; i++) {
if (cursys->staff[i].flags & OPEN_BRACE)
draw_sysbra(x, i, CLOSE_BRACE);
if (cursys->staff[i].flags & OPEN_BRACKET)
draw_sysbra(x, i, CLOSE_BRACKET);
if (cursys->staff[i].flags & OPEN_BRACE2)
draw_sysbra(x - 6, i, CLOSE_BRACE2);
if (cursys->staff[i].flags & OPEN_BRACKET2)
draw_sysbra(x - 6, i, CLOSE_BRACKET2);
}
}
/* -- draw a staff -- */
static void draw_staff(int staff,
float x1, float x2)
{
int nlines;
float y;
/* draw the staff */
set_sscale(staff);
y = staff_tb[staff].y;
nlines = cursys->staff[staff].clef.stafflines;
switch (nlines) {
case 0:
return;
case 1:
y += 12;
break;
case 2:
case 3:
y += 6;
break;
}
putx(x2 - x1);
a2b("%d ", nlines);
putxy(x1, y);
a2b("staff\n");
}
/* -- draw the time signature -- */
static void draw_timesig(float x,
struct SYMBOL *s)
{
unsigned i, staff, l, l2;
char *f, meter[64];
float dx;
if (s->as.u.meter.nmeter == 0)
return;
staff = s->staff;
x -= s->wl;
for (i = 0; i < s->as.u.meter.nmeter; i++) {
l = strlen(s->as.u.meter.meter[i].top);
if (l > sizeof s->as.u.meter.meter[i].top)
l = sizeof s->as.u.meter.meter[i].top;
if (s->as.u.meter.meter[i].bot[0] != '\0') {
sprintf(meter, "(%.8s)(%.2s)",
s->as.u.meter.meter[i].top,
s->as.u.meter.meter[i].bot);
f = "tsig";
l2 = strlen(s->as.u.meter.meter[i].bot);
if (l2 > sizeof s->as.u.meter.meter[i].bot)
l2 = sizeof s->as.u.meter.meter[i].bot;
if (l2 > l)
l = l2;
} else switch (s->as.u.meter.meter[i].top[0]) {
case 'C':
if (s->as.u.meter.meter[i].top[1] != '|') {
f = "csig";
} else {
f = "ctsig";
l--;
}
meter[0] = '\0';
break;
case 'c':
if (s->as.u.meter.meter[i].top[1] != '.') {
f = "imsig";
} else {
f = "iMsig";
l--;
}
meter[0] = '\0';
break;
case 'o':
if (s->as.u.meter.meter[i].top[1] != '.') {
f = "pmsig";
} else {
f = "pMsig";
l--;
}
meter[0] = '\0';
break;
case '(':
case ')':
sprintf(meter, "(\\%s)",
s->as.u.meter.meter[i].top);
f = "stsig";
break;
default:
sprintf(meter, "(%.8s)",
s->as.u.meter.meter[i].top);
f = "stsig";
break;
}
if (meter[0] != '\0')
a2b("%s ", meter);
dx = (float) (13 * l);
putxy(x + dx * .5, staff_tb[staff].y);
a2b("%s\n", f);
x += dx;
}
}
/* -- draw an accidental -- */
static void draw_acc(int acc, int microscale)
{
int n, d;
n = micro_tb[acc >> 3];
if (acc >> 3 != 0
&& (cfmt.micronewps || microscale)) {
if (microscale) {
d = microscale;
n = acc >> 3;
} else {
d = ((n & 0xff) + 1) * 2;
n = (n >> 8) + 1;
}
a2b("%d %s%d ", n, acc_tb[acc & 0x07], d);
} else {
a2b("%s%d ", acc_tb[acc & 0x07], n);
}
}
/* -- draw a key signature -- */
static void draw_keysig(struct VOICE_S *p_voice,
float x,
struct SYMBOL *s)
{
int old_sf = s->u;
int staff = p_voice->staff;
float staffb = staff_tb[staff].y;
int i, clef_ix, shift;
const signed char *p_seq;
static const char sharp_cl[7] = {24, 9, 15, 21, 6, 12, 18};
static const char flat_cl[7] = {12, 18, 24, 9, 15, 21, 6};
static const signed char sharp1[6] = {-9, 12, -9, -9, 12, -9};
static const signed char sharp2[6] = {12, -9, 12, -9, 12, -9};
static const signed char flat1[6] = {9, -12, 9, -12, 9, -12};
static const signed char flat2[6] = {-12, 9, -12, 9, -12, 9};
clef_ix = s->pits[0];
if (clef_ix & 1)
clef_ix += 7;
clef_ix /= 2;
while (clef_ix < 0)
clef_ix += 7;
clef_ix %= 7;
/* normal accidentals */
if (s->as.u.key.nacc == 0 && !s->as.u.key.empty) {
/* put neutrals if not 'accidental cancel' */
if (cfmt.cancelkey || s->as.u.key.sf == 0) {
/* when flats to sharps, or sharps to flats, */
if (s->as.u.key.sf == 0
|| old_sf * s->as.u.key.sf < 0) {
/* old sharps */
shift = sharp_cl[clef_ix];
p_seq = shift > 9 ? sharp1 : sharp2;
for (i = 0; i < old_sf; i++) {
putxy(x, staffb + shift);
a2b("nt0 ");
shift += *p_seq++;
x += 5.5;
}
/* old flats */
shift = flat_cl[clef_ix];
p_seq = shift < 18 ? flat1 : flat2;
for (i = 0; i > old_sf; i--) {
putxy(x, staffb + shift);
a2b("nt0 ");
shift += *p_seq++;
x += 5.5;
}
if (s->as.u.key.sf != 0)
x += 3; /* extra space */
/* or less sharps or flats */
} else if (s->as.u.key.sf > 0) { /* sharps */