void
plD_line_ps(PLStream *pls, short x1a, short y1a, short x2a, short y2a)
{
PSDev *dev = (PSDev *) pls->dev;
PLINT x1 = x1a, y1 = y1a, x2 = x2a, y2 = y2a;
/* Rotate by 90 degrees */
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &x1, &y1);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &x2, &y2);
if (x1 == dev->xold && y1 == dev->yold && dev->ptcnt < 40) {
if (pls->linepos + 12 > LINELENGTH) {
putc('\n', OF);
pls->linepos = 0;
}
else
putc(' ', OF);
sprintf(outbuf, "%d %d D", x2, y2);
dev->ptcnt++;
pls->linepos += 12;
}
else {
fprintf(OF, " Z\n");
pls->linepos = 0;
if (x1 == x2 && y1 == y2) /* must be a single dot, draw a circle */
sprintf(outbuf, "%d %d A", x1, y1);
else
sprintf(outbuf, "%d %d M %d %d D", x1, y1, x2, y2);
dev->llx = MIN(dev->llx, x1);
dev->lly = MIN(dev->lly, y1);
dev->urx = MAX(dev->urx, x1);
dev->ury = MAX(dev->ury, y1);
dev->ptcnt = 1;
pls->linepos += 24;
}
dev->llx = MIN(dev->llx, x2);
dev->lly = MIN(dev->lly, y2);
dev->urx = MAX(dev->urx, x2);
dev->ury = MAX(dev->ury, y2);
fprintf(OF, "%s", outbuf);
pls->bytecnt += 1 + strlen(outbuf);
dev->xold = x2;
dev->yold = y2;
}
static void
fill_polygon(PLStream *pls)
{
PSDev *dev = (PSDev *) pls->dev;
PLINT n, ix = 0, iy = 0;
PLINT x, y;
fprintf(OF, " Z\n");
for (n = 0; n < pls->dev_npts; n++) {
x = pls->dev_x[ix++];
y = pls->dev_y[iy++];
/* Rotate by 90 degrees */
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &x, &y);
/* First time through start with a x y moveto */
if (n == 0) {
sprintf(outbuf, "%d %d M", x, y);
dev->llx = MIN(dev->llx, x);
dev->lly = MIN(dev->lly, y);
dev->urx = MAX(dev->urx, x);
dev->ury = MAX(dev->ury, y);
fprintf(OF, "%s", outbuf);
pls->bytecnt += strlen(outbuf);
continue;
}
if (pls->linepos + 21 > LINELENGTH) {
putc('\n', OF);
pls->linepos = 0;
}
else
putc(' ', OF);
pls->bytecnt++;
sprintf(outbuf, "%d %d D", x, y);
dev->llx = MIN(dev->llx, x);
dev->lly = MIN(dev->lly, y);
dev->urx = MAX(dev->urx, x);
dev->ury = MAX(dev->ury, y);
fprintf(OF, "%s", outbuf);
pls->bytecnt += strlen(outbuf);
pls->linepos += 21;
}
dev->xold = PL_UNDEFINED;
dev->yold = PL_UNDEFINED;
fprintf(OF, " F ");
}
void
plD_line_ljii(PLStream *pls, short x1a, short y1a, short x2a, short y2a)
{
PLDev *dev = (PLDev *) pls->dev;
int i;
int xx1 = x1a, yy1 = y1a, xx2 = x2a, yy2 = y2a;
PLINT x1b, y1b, x2b, y2b;
PLFLT length, fx, fy, dx, dy;
/* Take mirror image, since PCL expects (0,0) to be at top left */
yy1 = dev->ymax - (yy1 - dev->ymin);
yy2 = dev->ymax - (yy2 - dev->ymin);
/* Rotate by 90 degrees */
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &xx1, &yy1);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &xx2, &yy2);
x1b = xx1, x2b = xx2, y1b = yy1, y2b = yy2;
length = (PLFLT) sqrt((double)
((x2b - x1b) * (x2b - x1b) + (y2b - y1b) * (y2b - y1b)));
if (length == 0.)
length = 1.;
dx = (xx2 - xx1) / length;
dy = (yy2 - yy1) / length;
fx = xx1;
fy = yy1;
setpoint((PLINT) xx1, (PLINT) yy1);
setpoint((PLINT) xx2, (PLINT) yy2);
for (i = 1; i <= (int) length; i++)
setpoint((PLINT) (fx += dx), (PLINT) (fy += dy));
}
void
plD_line_ljiip(PLStream *pls, short x1a, short y1a, short x2a, short y2a)
{
PLDev *dev = (PLDev *) pls->dev;
int xx1 = x1a, yy1 = y1a, xx2 = x2a, yy2 = y2a;
int abs_dx, abs_dy, dx, dy, incx, incy;
int i, j, width, residual;
PLFLT tmp;
width = MIN(pls->width, MAX_WID);
/* Take mirror image, since PCL expects (0,0) to be at top left */
yy1 = dev->ymax - (yy1 - dev->ymin);
yy2 = dev->ymax - (yy2 - dev->ymin);
/* Rotate by 90 degrees */
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &xx1, &yy1);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax, &xx2, &yy2);
dx = xx2 - xx1;
dy = yy2 - yy1;
if (dx < 0) {
abs_dx = -dx;
incx = -1;
}
else {
abs_dx = dx;
incx = 1;
}
if (dy < 0) {
abs_dy = -dy;
incy = -1;
}
else {
abs_dy = dy;
incy = 1;
}
/* make pixel width narrower for diag lines */
if (abs_dy <= abs_dx) {
if (abs_dx == 0)
tmp = 1.0;
else
tmp = 1.0 - (PLFLT) abs_dy / abs_dx;
}
else {
tmp = 1.0 - (PLFLT) abs_dx / abs_dy;
}
width = floor(0.5 + width * (tmp*tmp*tmp*(1.0-0.707107) + 0.707107));
if (width < 1) width = 1;
if (width > 1) {
for (i = 0; i < width; i++) {
for (j = 0; j < width; j++) {
setpoint((PLINT) (xx1+i), (PLINT) (yy1+j));
setpoint((PLINT) (xx2+i), (PLINT) (yy2+j));
}
}
}
if (abs_dx >= abs_dy) {
residual = -(abs_dx >> 1);
if (width == 1) {
for (i = 0; i <= abs_dx; i++, xx1 += incx) {
setpoint((PLINT) (xx1), (PLINT) (yy1));
if ((residual += abs_dy) >= 0) {
residual -= abs_dx;
yy1 += incy;
}
}
}
else {
for (i = 0; i <= abs_dx; i++, xx1 += incx) {
for (j = 0; j < width; j++) {
setpoint((PLINT) (xx1), (PLINT) (yy1+j));
setpoint((PLINT) (xx1+width-1), (PLINT) (yy1+j));
}
if ((residual += abs_dy) >= 0) {
residual -= abs_dx;
yy1 += incy;
}
}
}
}
void
proc_str (PLStream *pls, EscText *args)
{
PLFLT *t = args->xform, tt[4]; /* Transform matrices */
PLFLT theta; /* Rotation angle and shear from the matrix */
PLFLT ft_ht, offset; /* Font height and offset */
PLFLT cs,sn,l1,l2;
PSDev *dev = (PSDev *) pls->dev;
char *font, esc;
/* Be generous. Used to store lots of font changes which take
* 3 characters per change.*/
#define PROC_STR_STRING_LENGTH 1000
unsigned char *strp, str[PROC_STR_STRING_LENGTH], *cur_strp,
cur_str[PROC_STR_STRING_LENGTH];
float font_factor = 1.4;
PLINT clxmin, clxmax, clymin, clymax; /* Clip limits */
PLINT clipx[4],clipy[4]; /* Current clip limits */
PLFLT scale = 1., up = 0.; /* Font scaling and shifting parameters */
int i=0; /* String index */
short text_len;
/* unicode only! so test for it. */
if (args->unicode_array_len>0)
{
int j,s,f;
char *fonts[PROC_STR_STRING_LENGTH];
int nlookup;
const Unicode_to_Type1_table *lookup;
const PLUNICODE *cur_text;
const PLUNICODE *cur_text_limit;
PLUNICODE fci;
/* translate from unicode into type 1 font index. */
/*
* Choose the font family, style, variant, and weight using
* the FCI (font characterization integer).
*/
plgesc(&esc);
plgfci(&fci);
font = plP_FCI2FontName(fci, Type1Lookup, N_Type1Lookup);
if (font == NULL) {
fprintf(stderr, "fci = 0x%x, font name pointer = NULL \n", fci);
plabort("proc_str: FCI inconsistent with Type1Lookup; "
"internal PLplot error");
return;
}
/*pldebug("proc_str", "fci = 0x%x, font name = %s\n", fci, font);*/
if (!strcmp(font, "Symbol")) {
nlookup = number_of_entries_in_unicode_to_symbol_table;
lookup = unicode_to_symbol_lookup_table;
}
else {
nlookup = number_of_entries_in_unicode_to_standard_table;
lookup = unicode_to_standard_lookup_table;
}
cur_text = args->unicode_array;
for (f=s=j=0; j < args->unicode_array_len; j++) {
if (cur_text[j] & PL_FCI_MARK) {
/* process an FCI by saving it and escaping cur_str
* with an escff to make it a 2-character escape
* that is not used in legacy Hershey code
*/
if ((f < PROC_STR_STRING_LENGTH) && (s+3 < PROC_STR_STRING_LENGTH)) {
fonts[f] = plP_FCI2FontName(cur_text[j], Type1Lookup, N_Type1Lookup);
if (fonts[f] == NULL) {
fprintf(stderr, "string-supplied FCI = 0x%x, font name pointer = NULL \n", cur_text[j]);
plabort("proc_str: string-supplied FCI inconsistent with Type1Lookup;");
return;
}
/*pldebug("proc_str", "string-supplied FCI = 0x%x, font name = %s\n", cur_text[j], fonts[f]);*/
if (!strcmp(fonts[f++], "Symbol")) {
lookup = unicode_to_symbol_lookup_table;
nlookup = number_of_entries_in_unicode_to_symbol_table;
}
else {
lookup = unicode_to_standard_lookup_table;
nlookup = number_of_entries_in_unicode_to_standard_table;
}
cur_str[s++] = esc;
cur_str[s++] = 'f';
cur_str[s++] = 'f';
}
}
else if (s+1 < PROC_STR_STRING_LENGTH) {
cur_str[s++] = plunicode2type1(cur_text[j], lookup, nlookup);
/*pldebug("proc_str", "unicode = 0x%x, type 1 code = %d\n",
cur_text[j], cur_str[j]);*/
}
}
cur_str[s] = '\0';
/* finish previous polyline */
dev->xold = PL_UNDEFINED;
dev->yold = PL_UNDEFINED;
/* Determine the font height */
ft_ht = pls->chrht * 72.0/25.4; /* ft_ht in points, ht is in mm */
/* The transform matrix has only rotations and shears; extract them */
theta = acos(t[0]) * 180. / PI; /* Determine the rotation (in degrees)... */
if (t[2] < 0.) theta *= -1.; /* ... and sign ... */
cs = cos(theta*PI/180.);
sn = sin(theta*PI/180.);
tt[0] = t[0]*cs + t[2]*sn;
tt[1] = t[1]*cs + t[3]*sn;
tt[2] = -t[0]*sn + t[2]*cs;
tt[3] = -t[1]*sn + t[3]*cs;
/*
* Reference point conventions:
* If base = 0, it is aligned with the center of the text box
* If base = 1, it is aligned with the baseline of the text box
* If base = 2, it is aligned with the top of the text box
*
* Currently plplot only uses base=0
* Postscript uses base=1
*
* We must calculate the difference between the two and apply the offset.
*/
if (args->base == 2) /* not supported by plplot */
offset = ENLARGE * ft_ht / 2.; /* half font height */
else if (args->base == 1)
offset = 0.;
else
offset = -ENLARGE * ft_ht / 2.;
args->y += offset*cos(theta*PI/180.);
args->x -= offset*sin(theta*PI/180.);
/* Apply plplot difilt transformations */
difilt(&args->x, &args->y, 1, &clxmin, &clxmax, &clymin, &clymax);
/* ps driver is rotated by default */
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax,
&(args->x), &(args->y));
/* Determine the adjustment for page orientation */
theta += 90. - 90.*pls->diorot;
/* Output */
/* Set clipping */
clipx[0]=pls->clpxmi;
clipx[2]=pls->clpxma;
clipy[0]=pls->clpymi;
clipy[2]=pls->clpyma;
clipx[1]=clipx[2];
clipy[1]=clipy[0];
clipx[3]=clipx[0];
clipy[3]=clipy[2];
difilt(clipx, clipy, 4, &clxmin, &clxmax, &clymin, &clymax);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax,
&clipx[0], &clipy[0]);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax,
&clipx[1], &clipy[1]);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax,
&clipx[2], &clipy[2]);
plRotPhy(ORIENTATION, dev->xmin, dev->ymin, dev->xmax, dev->ymax,
&clipx[3], &clipy[3]);
fprintf(OF," gsave %d %d %d %d %d %d %d %d CL\n",clipx[0],clipy[0],clipx[1],clipy[1],clipx[2],clipy[2],clipx[3],clipy[3]);
/* move to string reference point */
fprintf(OF, " %d %d M\n", args->x, args->y );
/* Save the current position and set the string rotation */
fprintf(OF, "gsave %.3f R\n",theta);
/* Purge escape sequences from string, so that postscript can find it's
* length. The string length is computed with the current font, and can
* thus be wrong if there are font change escape sequences in the string
*/
esc_purge(str, cur_str);
fprintf(OF, "/%s %.3f SF\n", font,font_factor * ENLARGE * ft_ht);
/* Output string, while escaping the '(', ')' and '\' characters.
* this string is output for measurement purposes only.
*/
fprintf(OF, "%.3f (", - args->just);
while (str[i]!='\0') {
if (str[i]=='(' || str[i]==')' || str[i]=='\\')
fprintf(OF,"\\%c",str[i]);
else
fprintf(OF,"%c",str[i]);
i++;
}
fprintf(OF,") SW\n");
/* Parse string for PLplot escape sequences and print everything out */
cur_strp = cur_str;
f = 0;
do {
strp = str;
if (*cur_strp == esc) {
cur_strp++;
if (*cur_strp == esc) { /* <esc><esc> */
*strp++ = *cur_strp++;
}
else if (*cur_strp == 'f') {
cur_strp++;
if (*cur_strp++ != 'f') {
/* escff occurs because of logic above. But any suffix
* other than "f" should never happen. */
plabort("proc_str, internal PLplot logic error;"
"wrong escf escape sequence");
return;
}
font = fonts[f++];
/*pldebug("proc_str", "string-specified fci = 0x%x, font name = %s\n", fci, font);*/
continue;
}
else switch (*cur_strp++) {
case 'd':
case 'D':
if(up>0.) scale *= 1.25; /* Subscript scaling parameter */
else scale *= 0.8; /* Subscript scaling parameter */
up -= font_factor * ENLARGE * ft_ht / 2.;
break;
case 'u':
case 'U':
if(up<0.) scale *= 1.25; /* Subscript scaling parameter */
else scale *= 0.8; /* Subscript scaling parameter */
up += font_factor * ENLARGE * ft_ht / 2.;
break;
/* ignore the next sequences */
case '+':
case '-':
case 'b':
case 'B':
plwarn("'+', '-', and 'b/B' text escape sequences not processed.");
break;
}
}
/* copy from current to next token, adding a postscript escape
* char '\' if necessary
*/
while(*cur_strp && *cur_strp != esc) {
if (*cur_strp == '(' || *cur_strp == ')' || *cur_strp == '\\')
*strp++ = '\\';
*strp++ = *cur_strp++;
}
*strp = '\0';
if(fabs(up)<0.001) up = 0.; /* Watch out for small differences */
/* Apply the scaling and the shear */
fprintf(OF, "/%s [%.3f %.3f %.3f %.3f 0 0] SF\n",
font,
tt[0]*font_factor * ENLARGE * ft_ht * scale,
tt[2]*font_factor * ENLARGE * ft_ht * scale,
tt[1]*font_factor * ENLARGE * ft_ht * scale,
tt[3]*font_factor * ENLARGE * ft_ht * scale);
/* if up/down escape sequences, save current point and adjust baseline;
* take the shear into account */
if(up!=0.) fprintf(OF, "gsave %.3f %.3f rmoveto\n",up*tt[1],up*tt[3]);
/* print the string */
fprintf(OF, "(%s) show\n", str);
/* back to baseline */
if (up!=0.) fprintf(OF, "grestore (%s) stringwidth rmoveto\n", str);
}while(*cur_strp);
fprintf(OF, "grestore\n");
fprintf(OF, "grestore\n");
/*
* keep driver happy -- needed for background and orientation.
* arghhh! can't calculate it, as I only have the string reference
* point, not its extent!
* Still a hack - but at least it takes into account the string
* length and justification. Character width is assumed to be
* 0.6 * character height. Add on an extra 1.5 * character height
* for safety.
*/
cs = cos(theta/180.*PI);
sn = sin(theta/180.*PI);
l1 = -i*args->just;
l2 = i*(1.-args->just);
/* Factor of 0.6 is an empirical fudge to convert character
* height to average character width */
l1 *= 0.6;
l2 *= 0.6;
dev->llx = MIN(dev->llx, args->x + (MIN(l1*cs,l2*cs)-1.5) * font_factor * ft_ht * ENLARGE );
dev->lly = MIN(dev->lly, args->y + (MIN(l1*sn,l2*sn)-1.5) * font_factor * ft_ht * ENLARGE );
dev->urx = MAX(dev->urx, args->x + (MAX(l1*cs,l2*cs)+1.5) * font_factor * ft_ht * ENLARGE );
dev->ury = MAX(dev->ury, args->y + (MAX(l1*sn,l2*sn)+1.5) * font_factor * ft_ht * ENLARGE );
}
}
