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- /*
- * TransFig: Facility for Translating Fig code
- * Copyright (c) 1985 Supoj Sutantavibul
- * Copyright (c) 1991 Micah Beck
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. The authors make no representations about the suitability
- * of this software for any purpose. It is provided "as is" without express
- * or implied warranty.
- *
- * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- *
- */
-
- /*
- * gentextyl.c : TeXtyl driver for fig2dev
- *
- * Author: Gary Beihl, MCC 8/90
- * (beihl@mcc.com)
- *
- * Based on the pictex driver by Micah Beck
- *
- */
-
- #if defined(hpux) || defined(SYSV)
- #include <sys/types.h>
- #endif
- #include <sys/file.h>
- #include <stdio.h>
- #include <math.h>
- #include "pi.h"
- #include "object.h"
- #include "fig2dev.h"
- #include "texfonts.h"
-
- #ifndef sin
- extern double sin();
- #endif
- #ifndef cos
- extern double cos();
- #endif
- #ifndef acos
- extern double acos();
- #endif
- #ifndef fabs
- extern double fabs();
- #endif
-
- void gentextyl_ctl_spline(), gentextyl_itp_spline();
-
- static int coord_system;
- static double dash_length = -1;
- static int line_style = 0; /* Textyl solid line style */
- static int linethick = 2; /* Range is 1-12 `pixels' */
-
-
- static void gentextyl_option(opt, optarg)
- char opt, *optarg;
- {
- switch (opt) {
- case 'a':
- /* capfonts = 1; */
- break;
-
- case 'f': /* set default text font */
- texfontnames[0] = texfontnames[1] = optarg;
- break;
-
- case 'l': /* set line thickness */
- linethick = atoi(optarg);
- if (linethick < 1 || linethick > 12) {
- put_msg(Err_badarg, opt, "textyl");
- exit(1);
- }
- break;
-
- case 'p':
- case 's':
- case 'm':
- case 'L':
- break;
-
- default:
- put_msg(Err_badarg, opt, "textyl");
- exit(1);
- break;
- }
- }
-
- #define TOP (10.5) /* top of page is 10.5 inch */
- #define SCALE (65536.0*72.27)
- static double ppi;
- static int CONV = 0;
- #define measure 'S'
-
- convy(a)
- double a;
- {
- return (int)(((ury - a) * SCALE) / ppi);
- }
-
- convx(a)
- double a; {
- float f;
- f = a * SCALE;
- return (int)(f / ppi);
- }
-
- void gentextyl_start(objects)
- F_compound *objects;
- {
-
- texfontsizes[0] = texfontsizes[1] = texfontsizes[font_size+1];
- coord_system = objects->nwcorner.y;
- ppi = objects->nwcorner.x;
-
- if (coord_system == 2) CONV = 1;
- /* Textyl start */
- fprintf(tfp, "\\begintyl{%fsp}\n",ury/ppi*SCALE);
- }
-
- void gentextyl_end()
- {
- fprintf(tfp,"\\endtyl\n");
- }
-
-
- static set_linewidth(w)
- int w;
- {
- /* Nop */
- }
-
- void gentextyl_line(l)
- F_line *l;
- {
- F_point *p, *q;
-
- fprintf(tfp, "%%\n%% Fig POLYLINE object\n%%\n");
-
- set_linewidth(l->thickness);
- set_style(l->style, l->style_val);
-
- p = l->points;
- q = p->next;
-
-
- if (q == NULL) { /* A single point line */
- fprintf(tfp, "\\special{tyl line %c %d L %d %u %u; %u %u}\n",
- measure,linethick,line_style,
- convx((double)p->x), convy((double)p->y),
- convx((double)p->x), convy((double)p->y));
- return;
- }
- if (l->back_arrow)
- draw_arrow_head((double)q->x, (double)q->y, (double)p->x,
- (double)p->y, l->back_arrow->ht, l->back_arrow->wid);
- set_style(l->style, l->style_val);
-
- while (q->next != NULL) {
-
- putline(p->x, p->y, q->x, q->y);
- p = q;
- q = q->next;
- }
-
- putline(p->x, p->y, q->x, q->y);
- if (l->for_arrow)
- draw_arrow_head((double)p->x, (double)p->y, (double)q->x,
- (double)q->y, l->for_arrow->ht, l->for_arrow->wid);
-
- if (l->area_fill && (int)l->area_fill != DEFAULT)
- fprintf(stderr, "Line area fill not implemented\n");
- }
-
- /*
- * set_style - issue style commands as appropriate
- */
- static set_style(style, dash_len)
- int style;
- double dash_len;
- {
-
- switch (style) {
- case SOLID_LINE:
- line_style = 0;
- break;
-
- case DASH_LINE:
- line_style = 2;
- break;
-
- case DOTTED_LINE:
- line_style = 1;
- break;
- }
- }
-
- /*
- * putline
- */
- static putline (start_x, start_y, end_x, end_y)
- int start_x, start_y, end_x, end_y;
- {
-
- fprintf(tfp, "\\special{tyl line %c %d L %d %u %u; %u %u}\n",
- measure, linethick,line_style,
- convx((double)start_x), convy((double)start_y),
- convx((double)end_x), convy((double)end_y));
-
- }
-
-
- void gentextyl_spline(s)
- F_spline *s;
- {
-
- set_linewidth(s->thickness);
- set_style(s->style, s->style_val);
-
- if (int_spline(s))
- gentextyl_itp_spline(s);
- else
- gentextyl_ctl_spline(s);
-
- if (s->area_fill && (int)s->area_fill != DEFAULT)
- fprintf(stderr, "Spline area fill not implemented\n");
- }
-
- void gentextyl_ellipse(e)
- F_ellipse *e;
- {
- int sx, sy;
- int radius;
- fprintf(tfp, "%%\n%% Fig ELLIPSE\n%%\n");
-
- set_linewidth(e->thickness);
- set_style(e->style, e->style_val);
-
- if (e->radiuses.x == e->radiuses.y) {
- fprintf(tfp, "\\special{tyl arc %c %d L 0 %u @ %u,%u 0 360}\n",
- measure,linethick,convx((double)e->radiuses.x),
- convx((double)e->center.x),convy((double)e->center.y));
- }
- else {
- if (e->radiuses.x > e->radiuses.y) {
- sy = 100;
- sx = ((float)e->radiuses.x/(float)e->radiuses.y) * 100.0;
- radius = e->radiuses.y;
- }
- else {
- sx = 100;
- sy = ((float)e->radiuses.y/(float)e->radiuses.x) * 100.0;
- radius = e->radiuses.x;
- }
- fprintf(tfp,
- "\\special{tyl arc %c T %u %u 0 0 0 %d L 0 %u @ %u,%u 0 360}\n",
- measure,sx,sy,linethick,convx((double)radius),
- convx((double)e->center.x),convy((double)e->center.y));
- if (e->area_fill && (int)e->area_fill != DEFAULT)
- fprintf(stderr, "Ellipse area fill not implemented\n");
- }
- }
-
- #define HT_OFFSET (0.2 / 72.0)
-
- void gentextyl_text(t)
- F_text *t;
- {
- double x, y;
- char *cp;
-
- fprintf(tfp, "%%\n%% Fig TEXT object\n%%\n");
-
- x = t->base_x;
- y = t->base_y;
-
- switch (t->type) {
-
- case T_LEFT_JUSTIFIED:
- case DEFAULT:
- break;
- default:
- fprintf(stderr, "Warning: Text incorrectly positioned\n");
- break;
- }
-
- fprintf(tfp,"\\special{tyl label %c 1 %u %u \"%s\"}\n",
- measure,convx(x),convy(y),t->cstring);
-
- }
-
- void gentextyl_arc(a)
- F_arc *a;
- {
- double x, y;
- double cx, cy, sx, sy, ex, ey;
- double dx1, dy1, dx2, dy2, r1, r2, th1, th2, theta;
-
- set_linewidth(a->thickness);
- set_style(a->style, a->style_val);
-
- cx = a->center.x; cy = a->center.y;
- sx = a->point[0].x; sy = a->point[0].y;
- ex = a->point[2].x; ey = a->point[2].y;
-
- if (a->for_arrow) {
- arc_tangent(cx, cy, ex, ey, !a->direction, &x, &y);
- draw_arrow_head(x, y, ex, ey,
- a->for_arrow->ht, a->for_arrow->wid);
- }
- if (a->back_arrow) {
- arc_tangent(cx, cy, sx, sy, a->direction, &x, &y);
- draw_arrow_head(x, y, sx, sy,
- a->back_arrow->ht, a->back_arrow->wid);
- }
-
-
- cy = ury - a->center.y;
- sy = ury - a->point[0].y;
- ey = ury - a->point[2].y;
-
- dx1 = sx - cx;
- dy1 = sy - cy;
- dx2 = ex - cx;
- dy2 = ey - cy;
-
- cy = a->center.y;
- sy = a->point[0].y;
- ey = a->point[2].y;
-
- rtop(dx1, dy1, &r1, &th1);
- rtop(dx2, dy2, &r2, &th2);
- theta = th2 - th1;
- if (theta > 0) theta -= 2*M_PI;
-
- set_linewidth(a->thickness);
-
- if (a->direction) { /* Counterclockwise */
- fprintf(tfp,"\\special{tyl arc %c %d L 0 %u @ %u,%u %d %d}\n",
- measure,linethick,convx(r1),convx(cx),convy(cy),
- (int)(180/M_PI * th1), (int)(180/M_PI * th2));
- }
- else {
- fprintf(tfp,"\\special{tyl arc %c %d L 0 %u @ %u,%u %d %d}\n",
- measure,linethick,convx(r1),convx(cx),convy(cy),
- (int)(180/M_PI * th2), (int)(180/M_PI * th1));
- }
-
- if (a->area_fill && (int)a->area_fill != DEFAULT)
- fprintf(stderr, "Arc area fill not implemented\n");
- }
-
-
-
- /*
- * rtop - rectangular to polar conversion
- */
- static rtop(x, y, r, th)
- double x, y, *r, *th;
- {
- *r = sqrt(x*x+y*y);
- *th = acos(x/(*r));
-
- if (y < 0) *th = 2*M_PI - *th;
- }
-
- static arc_tangent(x1, y1, x2, y2, direction, x, y)
- double x1, y1, x2, y2, *x, *y;
- int direction;
- {
- if (direction) { /* counter clockwise */
- *x = x2 + (y2 - y1);
- *y = y2 - (x2 - x1);
- }
- else {
- *x = x2 - (y2 - y1);
- *y = y2 + (x2 - x1);
- }
- }
-
- /* draw arrow heading from (x1, y1) to (x2, y2) */
-
- static draw_arrow_head(x1, y1, x2, y2, arrowht, arrowwid)
- double x1, y1, x2, y2;
- double arrowht, arrowwid;
- {
- double x, y, xb, yb, dx, dy, l, sina, cosa;
- double xc, yc, xd, yd;
- int style;
- double dash;
-
- dx = x2 - x1; dy = y1 - y2;
- l = sqrt(dx*dx+dy*dy);
- if (l == 0) {
- return;
- }
- else {
- sina = dy / l; cosa = dx / l;
- }
- xb = x2*cosa - y2*sina;
- yb = x2*sina + y2*cosa;
- x = xb - arrowht;
- y = yb - arrowwid / 2;
- xc = x*cosa + y*sina;
- yc = -x*sina + y*cosa;
- y = yb + arrowwid / 2;
- xd = x*cosa + y*sina;
- yd = -x*sina + y*cosa;
-
- fprintf(tfp, "%%\n%% arrow head\n%%\n");
-
- fprintf(tfp, "\\special{tyl line %c %d %u %u; %u %u}\n",measure,linethick,
- convx(xc), convy(yc), convx(x2), convy(y2));
- fprintf(tfp, "\\special{tyl line %c %d %u %u; %u %u}\n",measure,linethick,
- convx(x2), convy(y2), convx(xd), convy(yd));
-
- }
-
- #define THRESHOLD (10.0)
- double last_x, last_y;
-
- static quadratic_spline(a1, b1, a2, b2, a3, b3, a4, b4)
- double a1, b1, a2, b2, a3, b3, a4, b4;
- {
- double x1, y1, x4, y4;
- double xmid, ymid;
-
- x1 = a1; y1 = b1;
- x4 = a4; y4 = b4;
- xmid = (a2 + a3) / 2;
- ymid = (b2 + b3) / 2;
- if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD) {
- fprintf(tfp, "\\special{tyl line %c %d %u %u; %u %u}\n",
- measure, linethick,convx(last_x),convy(last_y),
- convx(xmid), convy(ymid));
- last_x = xmid; last_y = ymid;
- }
-
- else {
- quadratic_spline(x1, y1, ((x1+a2)/2), ((y1+b2)/2),
- ((3*a2+a3)/4), ((3*b2+b3)/4), xmid, ymid);
- }
-
- if (fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
- fprintf(tfp, "\\special{tyl line %c %d %u %u; %u %u}\n",
- measure, linethick,convx(last_x),convy(last_y),convx(x4), convy(y4));
- last_x = x4; last_y = y4;
- }
-
- else {
- quadratic_spline(xmid, ymid, ((a2+3*a3)/4), ((b2+3*b3)/4),
- ((a3+x4)/2), ((b3+y4)/2), x4, y4);
- }
- }
-
- static void gentextyl_ctl_spline(s)
- F_spline *s;
- {
- F_point *p;
- double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
- double x1, y1, x2, y2;
-
- fprintf(tfp, "%%\n%% Fig CONTROL PT SPLINE\n%%\n");
-
- p = s->points;
- x1 = p->x; y1 = p->y;
- p = p->next;
- x2 = p->x; y2 = p->y;
- cx1 = (x1 + x2) / 2; cy1 = (y1 + y2) / 2;
- cx2 = (x1 + 3 * x2) / 4; cy2 = (y1 + 3 * y2) / 4;
-
- if (closed_spline(s)) {
- fprintf(tfp, "%% closed spline\n%%\n");
- last_x = cx1; last_y = cy1;
- }
- else {
- fprintf(tfp, "%% open spline\n%%\n");
- if (s->back_arrow)
- draw_arrow_head(cx1, cy1, x1, y1,
- s->back_arrow->ht, s->back_arrow->wid);
- fprintf(tfp, "\\special{tyl line %c %d %u %u;%u %u}\n",
- measure,linethick,
- convx(x1),convy(y1),convx(cx1),convy(cy1));
- last_x = cx1; last_y = cy1;
- }
-
- for (p = p->next; p != NULL; p = p->next) {
- x1 = x2; y1 = y2;
- x2 = p->x; y2 = p->y;
- cx3 = (3 * x1 + x2) / 4; cy3 = (3 * y1 + y2) / 4;
- cx4 = (x1 + x2) / 2; cy4 = (y1 + y2) / 2;
- quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
- cx1 = cx4; cy1 = cy4;
- cx2 = (x1 + 3 * x2) / 4; cy2 = (y1 + 3 * y2) / 4;
- }
- x1 = x2; y1 = y2;
- p = s->points->next;
- x2 = p->x; y2 = p->y;
- cx3 = (3 * x1 + x2) / 4; cy3 = (3 * y1 + y2) / 4;
- cx4 = (x1 + x2) / 2; cy4 = (y1 + y2) / 2;
- if (closed_spline(s)) {
- quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
- }
- else {
- fprintf(tfp,"\\special{tyl line %c %d %u %u;%u %u}\n",
- measure,linethick,
- convx(cx1),convy(cy1),convx(x1),convy(y1));
- if (s->for_arrow)
- draw_arrow_head(cx1, cy1, x1, y1,
- s->for_arrow->ht, s->for_arrow->wid);
- }
-
- }
-
- static void gentextyl_itp_spline(s)
- F_spline *s;
- {
- F_point *p1, *p2;
- F_control *cp1, *cp2;
- double x1, x2, y1, y2;
-
-
- p1 = s->points;
- cp1 = s->controls;
- x2 = p1->x; y2 = p1->y;
-
- if (s->back_arrow)
- draw_arrow_head(cp1->rx, cp1->ry, x2, y2,
- s->back_arrow->ht, s->back_arrow->wid);
-
- last_x = x2; last_y = y2;
-
- fprintf(tfp, "%%\n%% Fig INTERPOLATED SPLINE\n%%\n");
- for (p2 = p1->next, cp2 = s->controls->next;
- p2 != NULL;
- cp1 = cp2, p2 = p2->next, cp2 = cp2->next) {
- x1 = x2; y1 = y2; x2 = p2->x; y2 = p2->y;
- bezier_spline(x1,y1,cp1->rx,cp1->ry,
- cp2->lx,cp2->ly,x2,y2);
- }
-
- if (s->for_arrow)
- draw_arrow_head(cp1->lx, cp1->ly, x2, y2,
- s->for_arrow->ht, s->for_arrow->wid);
- }
-
- static bezier_spline(a0, b0, a1, b1, a2, b2, a3, b3)
- double a0, b0, a1, b1, a2, b2, a3, b3;
- {
- double x0, y0, x3, y3;
- double sx1, sy1, sx2, sy2, tx, ty, tx1, ty1, tx2, ty2, xmid, ymid;
-
- x0 = a0; y0 = b0;
- x3 = a3; y3 = b3;
- if (fabs(x0 - x3) < THRESHOLD && fabs(y0 - y3) < THRESHOLD) {
- fprintf(tfp,"\\special{tyl line %c %d %u %u ; %u %u}\n",measure,linethick,
- convx(last_x),convy(last_y),convx(x3),convy(y3));
- last_x = x3; last_y = y3;
- }
-
- else {
- tx = (a1 + a2) / 2; ty = (b1 + b2) / 2;
- sx1 = (x0 + a1) / 2; sy1 = (y0 + b1) / 2;
- sx2 = (sx1 + tx) / 2; sy2 = (sy1 + ty) / 2;
- tx2 = (a2 + x3) / 2; ty2 = (b2 + y3) / 2;
- tx1 = (tx2 + tx) / 2; ty1 = (ty2 + ty) / 2;
- xmid = (sx2 + tx1) / 2; ymid = (sy2 + ty1) / 2;
-
- bezier_spline(x0, y0, sx1, sy1, sx2, sy2, xmid, ymid);
- bezier_spline(xmid, ymid, tx1, ty1, tx2, ty2, x3, y3);
- }
- }
-
- struct driver dev_textyl = {
- gentextyl_option,
- gentextyl_start,
- gentextyl_arc,
- gentextyl_ellipse,
- gentextyl_line,
- gentextyl_spline,
- gentextyl_text,
- gentextyl_end,
- EXCLUDE_TEXT
- };
-
-