obj*
blockgen(obj *p, obj *q) /* handles [...] */
{
int i, invis, at, with;
double ddval, h, w, xwith, ywith;
double x0, y0, x1, y1, cx, cy;
obj *ppos;
Attr *ap;
invis = at = 0;
with = xwith = ywith = 0;
ddval = 0;
w = p->o_val[2] - p->o_val[0];
h = p->o_val[3] - p->o_val[1];
cx = (p->o_val[2] + p->o_val[0]) / 2; /* geom ctr of [] wrt local orogin */
cy = (p->o_val[3] + p->o_val[1]) / 2;
dprintf("cx,cy=%g,%g\n", cx, cy);
for (i = 0; i < nattr; i++) {
ap = &attr[i];
switch (ap->a_type) {
case HEIGHT:
h = ap->a_val.f;
break;
case WIDTH:
w = ap->a_val.f;
break;
case WITH:
with = ap->a_val.i; /* corner */
break;
case PLACE: /* actually with position ... */
ppos = ap->a_val.o;
xwith = cx - ppos->o_x;
ywith = cy - ppos->o_y;
with = PLACE;
break;
case AT:
case FROM:
ppos = ap->a_val.o;
curx = ppos->o_x;
cury = ppos->o_y;
at++;
break;
case INVIS:
invis = INVIS;
break;
case TEXTATTR:
savetext(ap->a_sub, ap->a_val.p);
break;
}
}
if (with) {
switch (with) {
case NORTH: ywith = -h / 2; break;
case SOUTH: ywith = h / 2; break;
case EAST: xwith = -w / 2; break;
case WEST: xwith = w / 2; break;
case NE: xwith = -w / 2; ywith = -h / 2; break;
case SE: xwith = -w / 2; ywith = h / 2; break;
case NW: xwith = w / 2; ywith = -h / 2; break;
case SW: xwith = w / 2; ywith = h / 2; break;
}
curx += xwith;
cury += ywith;
}
if (!at) {
if (isright(hvmode))
curx += w / 2;
else if (isleft(hvmode))
curx -= w / 2;
else if (isup(hvmode))
cury += h / 2;
else
cury -= h / 2;
}
x0 = curx - w / 2;
y0 = cury - h / 2;
x1 = curx + w / 2;
y1 = cury + h / 2;
extreme(x0, y0);
extreme(x1, y1);
p->o_x = curx;
p->o_y = cury;
p->o_nt1 = ntext1;
p->o_nt2 = ntext;
ntext1 = ntext;
p->o_val[0] = w;
p->o_val[1] = h;
p->o_val[2] = cx;
p->o_val[3] = cy;
p->o_val[5] = q->o_nobj - 1; /* last item in [...] */
p->o_ddval = ddval;
p->o_attr = invis;
dprintf("[] %g %g %g %g at %g %g, h=%g, w=%g\n", x0, y0, x1, y1, curx, cury, h, w);
if (isright(hvmode))
curx = x1;
else if (isleft(hvmode))
curx = x0;
else if (isup(hvmode))
cury = y1;
else
cury = y0;
for (i = 0; i <= 5; i++)
q->o_val[i] = p->o_val[i];
stack[nstack+1].p_symtab = NULL; /* so won't be found again */
blockadj(p); /* fix up coords for enclosed blocks */
return(p);
}
obj *circgen(type)
{
static float rad[2] = { HT2, WID2 };
static float rad2[2] = { HT2, HT2 };
static float x0, y0, x1, y1, x2, y2;
int i, at, t, invis, ddtype, with;
float xwith, ywith;
float r, r2, ddval;
obj *p, *ppos;
Attr *ap;
at = invis = ddtype = 0;
with = xwith = ywith = 0;
t = (type == CIRCLE) ? 0 : 1;
if (type == CIRCLE)
r = r2 = getfval("circlerad");
else if (type == ELLIPSE) {
r = getfval("ellipsewid") / 2;
r2 = getfval("ellipseht") / 2;
}
for (i = 0; i < nattr; i++) {
ap = &attr[i];
switch (ap->a_type) {
case TEXTATTR:
savetext(ap->a_sub, ap->a_val.p);
break;
case RADIUS:
r = ap->a_val.f;
break;
case DIAMETER:
case WIDTH:
r = ap->a_val.f / 2;
break;
case HEIGHT:
r2 = ap->a_val.f / 2;
break;
case SAME:
r = rad[t];
r2 = rad2[t];
break;
case WITH:
with = ap->a_val.i;
break;
case AT:
ppos = ap->a_val.o;
curx = ppos->o_x;
cury = ppos->o_y;
at++;
break;
case INVIS:
invis = INVIS;
break;
case DOT:
case DASH:
ddtype = ap->a_type==DOT ? DOTBIT : DASHBIT;
if (ap->a_sub == DEFAULT)
ddval = getfval("dashwid");
else
ddval = ap->a_val.f;
break;
}
}
if (type == CIRCLE)
r2 = r; /* probably superfluous */
if (with) {
switch (with) {
case NORTH: ywith = -r2; break;
case SOUTH: ywith = r2; break;
case EAST: xwith = -r; break;
case WEST: xwith = r; break;
case NE: xwith = -r * 0.707; ywith = -r2 * 0.707; break;
case SE: xwith = -r * 0.707; ywith = r2 * 0.707; break;
case NW: xwith = r * 0.707; ywith = -r2 * 0.707; break;
case SW: xwith = r * 0.707; ywith = r2 * 0.707; break;
}
curx += xwith;
cury += ywith;
}
if (!at) {
if (isright(hvmode))
curx += r;
else if (isleft(hvmode))
curx -= r;
else if (isup(hvmode))
cury += r2;
else
cury -= r2;
}
p = makenode(type, 2);
p->o_val[0] = rad[t] = r;
p->o_val[1] = rad2[t] = r2;
if (r <= 0 || r2 <= 0) {
yyerror("%s has invalid radius %g\n", (type==CIRCLE) ? "circle" : "ellipse", r<r2 ? r : r2);
}
p->o_attr = invis | ddtype;
extreme(curx+r, cury+r2);
extreme(curx-r, cury-r2);
if (type == CIRCLE)
dprintf("C %g %g %g\n", curx, cury, r);
if (type == ELLIPSE)
dprintf("E %g %g %g %g\n", curx, cury, r, r2);
if (isright(hvmode))
curx += r;
else if (isleft(hvmode))
curx -= r;
else if (isup(hvmode))
cury += r2;
else
cury -= r2;
return(p);
}
obj *textgen(void)
{
int i, sub, nstr, at, with, hset, invis;
double xwith, ywith, h, w, x0, y0, x1, y1;
obj *p, *ppos;
Attr *ap;
at = with = nstr = hset = invis = 0;
h = getfval("textht");
w = getfval("textwid");
for (i = 0; i < nattr; i++) {
ap = &attr[i];
switch (ap->a_type) {
case HEIGHT:
h = ap->a_val.f;
hset++;
break;
case WIDTH:
w = ap->a_val.f;
break;
case WITH:
with = ap->a_val.i;
break;
case INVIS:
invis = INVIS;
break;
case AT:
ppos = ap->a_val.o;
curx = ppos->o_x;
cury = ppos->o_y;
at++;
break;
case TEXTATTR:
sub = ap->a_sub;
if (ap->a_val.p == NULL) /* an isolated modifier */
text[ntext-1].t_type = sub;
else {
savetext(sub, ap->a_val.p);
nstr++;
}
break;
}
}
if (hset == 0) /* no explicit ht cmd */
h *= nstr;
if (with) {
xwith = ywith = 0.0;
switch (with) {
case NORTH: ywith = -h / 2; break;
case SOUTH: ywith = h / 2; break;
case EAST: xwith = -w / 2; break;
case WEST: xwith = w / 2; break;
case NE: xwith = -w / 2; ywith = -h / 2; break;
case SE: xwith = -w / 2; ywith = h / 2; break;
case NW: xwith = w / 2; ywith = -h / 2; break;
case SW: xwith = w / 2; ywith = h / 2; break;
}
curx += xwith;
cury += ywith;
}
if (!at) {
if (isright(hvmode))
curx += w / 2;
else if (isleft(hvmode))
curx -= w / 2;
else if (isup(hvmode))
cury += h / 2;
else
cury -= h / 2;
}
x0 = curx - w / 2;
y0 = cury - h / 2;
x1 = curx + w / 2;
y1 = cury + h / 2;
extreme(x0, y0);
extreme(x1, y1);
dprintf("Text h %g w %g at %g,%g\n", h, w, curx, cury);
p = makenode(TEXT, 2);
p->o_attr = invis;
p->o_val[0] = w;
p->o_val[1] = h;
if (isright(hvmode))
curx = x1;
else if (isleft(hvmode))
curx = x0;
else if (isup(hvmode))
cury = y1;
else
cury = y0;
return(p);
}
print()
{
obj *p;
int i, j, k, m;
float x0, y0, x1, y1, ox, oy, dx, dy, ndx, ndy;
for (i = 0; i < nobj; i++) {
p = objlist[i];
ox = p->o_x;
oy = p->o_y;
if (p->o_count >= 1)
x1 = p->o_val[0];
if (p->o_count >= 2)
y1 = p->o_val[1];
m = p->o_mode;
switch (p->o_type) {
case TROFF:
troff(text[p->o_nt1].t_val);
break;
case BOX:
case BLOCK:
move(ox, oy);
dotext(p); /* if there are any text strings */
x0 = ox - x1 / 2;
y0 = oy - y1 / 2;
x1 = ox + x1 / 2;
y1 = oy + y1 / 2;
if (p->o_attr & INVIS || p->o_type == BLOCK)
; /* nothing at all */
else if (p->o_attr & (DOTBIT|DASHBIT))
dotbox(x0, y0, x1, y1, p->o_attr, p->o_ddval);
else
box(x0, y0, x1, y1);
if (ishor(m))
move(isright(m) ? x1 : x0, oy); /* right side */
else
move(ox, isdown(m) ? y0 : y1); /* bottom */
break;
case BLOCKEND:
break;
case CIRCLE:
move(ox, oy);
dotext(p);
if ((p->o_attr & INVIS) == 0)
circle(ox, oy, x1);
if (ishor(m))
move(ox + isright(m) ? x1 : -x1, oy);
else
move(ox, oy + isup(m) ? x1 : -x1);
break;
case ELLIPSE:
move(ox, oy);
dotext(p);
if ((p->o_attr & INVIS) == 0)
ellipse(ox, oy, x1, y1);
if (ishor(m))
move(ox + isright(m) ? x1 : -x1, oy);
else
move(ox, oy - isdown(m) ? y1 : -y1);
break;
case ARC:
move(ox, oy);
dotext(p);
if (p->o_attr & HEAD1)
arrow(x1 - (y1 - oy), y1 + (x1 - ox),
x1, y1, p->o_val[4], p->o_val[5], p->o_val[5]/p->o_val[6]/2, p->o_nhead);
if (p->o_attr & INVIS)
/* probably wrong when it's cw */
move(x1, y1);
else
arc(ox, oy, x1, y1, p->o_val[2], p->o_val[3]);
if (p->o_attr & HEAD2)
arrow(p->o_val[2] + p->o_val[3] - oy, p->o_val[3] - (p->o_val[2] - ox),
p->o_val[2], p->o_val[3], p->o_val[4], p->o_val[5], -p->o_val[5]/p->o_val[6]/2, p->o_nhead);
if (p->o_attr & CW_ARC)
move(x1, y1); /* because drawn backwards */
break;
case LINE:
case ARROW:
case SPLINE:
move((ox + x1)/2, (oy + y1)/2); /* center */
dotext(p);
if (p->o_attr & HEAD1)
arrow(ox + p->o_val[5], oy + p->o_val[6], ox, oy, p->o_val[2], p->o_val[3], 0.0, p->o_nhead);
if (p->o_attr & INVIS)
move(x1, y1);
else if (p->o_type == SPLINE)
spline(ox, oy, p->o_val[4], &p->o_val[5], p->o_attr & (DOTBIT|DASHBIT), p->o_ddval);
else {
dx = ox;
dy = oy;
for (k=0, j=5; k < p->o_val[4]; k++, j += 2) {
ndx = dx + p->o_val[j];
ndy = dy + p->o_val[j+1];
if (p->o_attr & (DOTBIT|DASHBIT))
dotline(dx, dy, ndx, ndy, p->o_attr, p->o_ddval);
else
line(dx, dy, ndx, ndy);
dx = ndx;
dy = ndy;
}
}
if (p->o_attr & HEAD2) {
dx = ox;
dy = oy;
for (k = 0, j = 5; k < p->o_val[4] - 1; k++, j += 2) {
dx += p->o_val[j];
dy += p->o_val[j+1];
}
arrow(dx, dy, x1, y1, p->o_val[2], p->o_val[3], 0.0, p->o_nhead);
}
break;
case MOVE:
case TEXT:
move(ox, oy);
dotext(p);
break;
}
}
}
obj *boxgen(void)
{
static double prevh = HT;
static double prevw = WID; /* golden mean, sort of */
int i, at, battr, with;
double ddval, fillval, xwith, ywith;
double h, w, x0, y0, x1, y1;
obj *p, *ppos;
Attr *ap;
h = getfval("boxht");
w = getfval("boxwid");
at = battr = with = 0;
ddval = fillval = xwith = ywith = 0;
for (i = 0; i < nattr; i++) {
ap = &attr[i];
switch (ap->a_type) {
case HEIGHT:
h = ap->a_val.f;
break;
case WIDTH:
w = ap->a_val.f;
break;
case SAME:
h = prevh;
w = prevw;
break;
case WITH:
with = ap->a_val.i; /* corner */
break;
case AT:
ppos = ap->a_val.o;
curx = ppos->o_x;
cury = ppos->o_y;
at++;
break;
case INVIS:
battr |= INVIS;
break;
case NOEDGE:
battr |= NOEDGEBIT;
break;
case DOT:
case DASH:
battr |= ap->a_type==DOT ? DOTBIT : DASHBIT;
if (ap->a_sub == DEFAULT)
ddval = getfval("dashwid");
else
ddval = ap->a_val.f;
break;
case FILL:
battr |= FILLBIT;
if (ap->a_sub == DEFAULT)
fillval = getfval("fillval");
else
fillval = ap->a_val.f;
break;
case TEXTATTR:
savetext(ap->a_sub, ap->a_val.p);
break;
}
}
if (with) {
switch (with) {
case NORTH: ywith = -h / 2; break;
case SOUTH: ywith = h / 2; break;
case EAST: xwith = -w / 2; break;
case WEST: xwith = w / 2; break;
case NE: xwith = -w / 2; ywith = -h / 2; break;
case SE: xwith = -w / 2; ywith = h / 2; break;
case NW: xwith = w / 2; ywith = -h / 2; break;
case SW: xwith = w / 2; ywith = h / 2; break;
}
curx += xwith;
cury += ywith;
}
if (!at) {
if (isright(hvmode))
curx += w / 2;
else if (isleft(hvmode))
curx -= w / 2;
else if (isup(hvmode))
cury += h / 2;
else
cury -= h / 2;
}
x0 = curx - w / 2;
y0 = cury - h / 2;
x1 = curx + w / 2;
y1 = cury + h / 2;
extreme(x0, y0);
extreme(x1, y1);
p = makenode(BOX, 2);
p->o_val[0] = w;
p->o_val[1] = h;
p->o_attr = battr;
p->o_ddval = ddval;
p->o_fillval = fillval;
dprintf("B %g %g %g %g at %g %g, h=%g, w=%g\n", x0, y0, x1, y1, curx, cury, h, w);
if (isright(hvmode))
curx = x1;
else if (isleft(hvmode))
curx = x0;
else if (isup(hvmode))
cury = y1;
else
cury = y0;
prevh = h;
prevw = w;
return(p);
}
obj *
circgen(int type) {
static double rad[2] = { HT2, WID2 };
static double rad2[2] = { HT2, HT2 };
struct objattr obat;
double xwith, ywith, r, r2;
int i, at, t, with;
obj *p, *ppos;
Attr *ap;
obat.a_layer = (int)getfval("curlayer");
obat.a_flags = EDGED;
obat.a_weight = obat.a_lcolor = obat.a_pcolor = obat.a_tcolor = -1;
obat.a_dashpat.a = (float *)0;
at = with = xwith = ywith = 0;
if ((t = (type == CIRCLE) ? 0 : 1)) {
r = getfval("ellipsewid") / 2;
r2 = getfval("ellipseht") / 2;
}
else
r = r2 = getfval("circlerad");
set_text();
for (i = 0; i < nattr; i++) {
ap = &attr[i];
switch (ap->a_type) {
default:
miscattrs(ap, &obat);
break;
case RADIUS:
r = ap->a_val.f;
break;
case DIAMETER:
case WIDTH:
r = ap->a_val.f / 2;
break;
case HEIGHT:
r2 = ap->a_val.f / 2;
break;
case SAME:
r = rad[t];
r2 = rad2[t];
break;
case WITH:
with = ap->a_val.i;
break;
case AT:
ppos = ap->a_val.o;
curx = Xformx(ppos, 1, ppos->o_x, ppos->o_y);
cury = Xformy(ppos, 0, ppos->o_x, ppos->o_y);
at++;
break;
}
}
if (type == CIRCLE)
r2 = r; /* probably superfluous */
if (with) {
if (pic_compat) /* map NE to 2nd, etc. */
with = with == NE ? 2 :
with == NW ? 4 :
with == SW ? 6 :
with == SE ? 8 : with;
switch (with) {
case NORTH: ywith = -r2; break;
case SOUTH: ywith = r2; break;
case EAST: xwith = -r; break;
case WEST: xwith = r; break;
case NE: xwith = -r; ywith = -r2; break;
case SE: xwith = -r; ywith = r2; break;
case NW: xwith = r; ywith = -r2; break;
case SW: xwith = r; ywith = r2; break;
case CENTER:
case START:
case END: break;
default: xwith = -r * xdelta[with % 8];
ywith = -r2 * ydelta[with % 8];
if (with % 2 == 0) {
xwith *= M_SQRT1_2;
ywith *= M_SQRT1_2;
}
break;
}
curx += xwith;
cury += ywith;
}
if (!at) {
if (isright(hvmode))
curx += r;
else if (isleft(hvmode))
curx -= r;
else if (isup(hvmode))
cury += r2;
else
cury -= r2;
}
if (r <= 0 || r2 <= 0)
yyerror("%s has invalid radius %g",
(type==CIRCLE) ? "circle" : "ellipse", r<r2 ? r : r2);
p = makenode(type, N_VAL, obat.a_layer);
p->o_wid = 2 * (rad[t] = r);
p->o_ht = 2 * (rad2[t] = r2);
primattrs(p, &obat);
text_bounds(p);
if (isright(hvmode))
curx += r;
else if (isleft(hvmode))
curx -= r;
else if (isup(hvmode))
cury += r2;
else
cury -= r2;
r += p->o_weight/2;
r2 += p->o_weight/2;
track_bounds (p->o_x - r, p->o_y - r2, p->o_x + r, p->o_y + r2);
return(p);
}
