diff options
Diffstat (limited to 'src/cmd/svgpic/print.c')
| -rw-r--r-- | src/cmd/svgpic/print.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/src/cmd/svgpic/print.c b/src/cmd/svgpic/print.c new file mode 100644 index 00000000..1be73867 --- /dev/null +++ b/src/cmd/svgpic/print.c @@ -0,0 +1,182 @@ +#include <stdio.h> +#include <math.h> +#include "pic.h" +#include "y.tab.h" + +void dotext(obj *); +void ellipse(double, double, double, double); +void circle(double, double, double); +void arc(double, double, double, double, double, double, double); +void arrow(double, double, double, double, double, double, double, int); +void line(double, double, double, double, int, double); +void box(double, double, double, double, int, double); +void spline(double x, double y, double n, ofloat *p, int dashed, double ddval); +void move(double, double); +void troff(char *); +void dot(void); +void fillstart(double, int, int), fillend(void); + +void print(void) +{ + obj *p; + int i, j, k, m; + int fill, vis, invis; + double x0, y0, x1, y1, ox, oy, dx, dy, ndx, ndy; + + x1 = y1 = 0.0; /* Botch? (gcc) */ + + 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; + fill = p->o_attr & FILLBIT; + invis = p->o_attr & INVIS; + vis = !invis; + switch (p->o_type) { + case TROFF: + troff(text[p->o_nt1].t_val); + break; + case BOX: + case BLOCK: + x0 = ox - x1 / 2; + y0 = oy - y1 / 2; + x1 = ox + x1 / 2; + y1 = oy + y1 / 2; + if (fill) { + move(x0, y0); + fillstart(p->o_fillval, vis, fill); + } + if (p->o_type == BLOCK) + ; /* nothing at all */ + else if (invis && !fill) + ; /* nothing at all */ + else + box(x0, y0, x1, y1, p->o_attr & (DOTBIT|DASHBIT), p->o_ddval); + if (fill) + fillend(); + move(ox, oy); + dotext(p); /* if there are any text strings */ + 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: + if (fill) + fillstart(p->o_fillval, vis, fill); + if (vis || fill) + circle(ox, oy, x1); + if (fill) + fillend(); + move(ox, oy); + dotext(p); + if (ishor(m)) + move(ox + isright(m) ? x1 : -x1, oy); + else + move(ox, oy + isup(m) ? x1 : -x1); + break; + case ELLIPSE: + if (fill) + fillstart(p->o_fillval, vis, fill); + if (vis || fill) + ellipse(ox, oy, x1, y1); + if (fill) + fillend(); + move(ox, oy); + dotext(p); + if (ishor(m)) + move(ox + isright(m) ? x1 : -x1, oy); + else + move(ox, oy - isdown(m) ? y1 : -y1); + break; + case ARC: + if (fill) { + move(ox, oy); + fillstart(p->o_fillval, vis, fill); + } + 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 (invis && !fill) + /* probably wrong when it's cw */ + move(x1, y1); + else + arc(ox, oy, x1, y1, p->o_val[2], p->o_val[3], p->o_val[6]); + 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 (fill) + fillend(); + if (p->o_attr & CW_ARC) + move(x1, y1); /* because drawn backwards */ + move(ox, oy); + dotext(p); + break; + case LINE: + case ARROW: + case SPLINE: + if (fill) { + move(ox, oy); + fillstart(p->o_fillval, vis, fill); + } + if (vis && 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 (invis && !fill) + 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]; + line(dx, dy, ndx, ndy, p->o_attr & (DOTBIT|DASHBIT), p->o_ddval); + dx = ndx; + dy = ndy; + } + } + if (vis && 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); + } + if (fill) + fillend(); + move((ox + x1)/2, (oy + y1)/2); /* center */ + dotext(p); + break; + case MOVE: + move(ox, oy); + break; + case TEXT: + move(ox, oy); + if (vis) + dotext(p); + break; + } + } +} + +void dotext(obj *p) /* print text strings of p in proper vertical spacing */ +{ + int i, nhalf; + void label(char *, int, int); + + nhalf = p->o_nt2 - p->o_nt1 - 1; + for (i = p->o_nt1; i < p->o_nt2; i++) { + label(text[i].t_val, text[i].t_type, nhalf); + nhalf -= 2; + } +} |