1 /* replacement for pltroff.c to produce a TeX file that makes a box */
2 
3 #include <stdio.h>
4 #include <math.h>
5 #include "pic.h"
6 
7 double rangex, rangey;  /* probably already available inside pic somewhere */
8 extern int dbg;
9 int frameno;
10 
11 /*-----------copied from old version----------*/
12 
13 void
14 arrow(double x0, double y0, double x1, double y1, double w, double h, double ang, int nhead) 	/* draw arrow (without shaft) */
15 	/* head wid w, len h, rotated ang */
16 	/* and drawn with nhead lines */
17 {
18 	double alpha, rot, drot, hyp;
19 	float dx, dy;
20 	int i;
21 
22 	rot = atan2(w / 2, h);
23 	hyp = sqrt(w/2 * w/2 + h * h);
24 	alpha = atan2(y1-y0, x1-x0) + ang;
25 	if (nhead < 2)
26 		nhead = 2;
27 	for (i = nhead-1; i >= 0; i--) {
28 		drot = 2 * rot / (double) (nhead-1) * (double) i;
29 		dx = hyp * cos(alpha + PI - rot + drot);
30 		dy = hyp * sin(alpha + PI - rot + drot);
31 		line(x1+dx, y1+dy, x1, y1);
32 	}
33 }
34 
35 
36 /*-----------new code----------*/
37 
38 void
39 printlf(int line, char *name)
40 {
41 }
42 
43 void
44 fillstart(double v)	/* only choose black, light grey (.75), or white, for now */
45 {
46 	if (v<.05)
47 		fprintf(TEXFILE, "    \\special{bk}%%\n");
48 	else if (v>.95)
49 		fprintf(TEXFILE, "    \\special{wh}%%\n");
50 	else
51 		fprintf(TEXFILE, "    \\special{sh}%%\n");
52 }
53 
54 void
55 fillend(void)
56 {
57 }
58 
59 void
60 troff(char *s)
61 {
62 	int size;
63 
64 	if (strncmp(s, ".ps", 3) == 0) {
65 	    if (sscanf(&s[3], " %d ", &size) > 0) {
66 		fprintf(TEXFILE, "    \\special{pn %d}%%\n", size);
67 		e1->pdiam = size;
68 	    } else fprintf(stderr, "Malformed .ps command: %s\n", s);
69 	}
70 }
71 
72 
73 void
74 space(double x0, double y0, double x1, double y1)	/* set limits of page */
75 {
76 	e0->sidex = e1->sidex = deltx*1000;
77 	e0->sidey = e1->sidey = e0->bottom = e1->bottom = delty*1000;
78 	range(x0, y0, x1, y1);
79 }
80 
81 void
82 dot(void)
83 {
84 	/* use .005" radius at nominal 9pt pen size */
85 	disc(e1->copyx,e1->copyy,(e1->pdiam/9.0)*(4.3/e1->scalex));
86 }
87 
88 void
89 label(char *s, int t, int nh)	/* text s of type t nh half-lines up */
90 {
91 	double nem;
92 
93 	if (t & ABOVE)
94 		nh++;
95 	else if (t & BELOW)
96 		nh--;
97 	nem = .2 - nh*.6;
98 	fprintf(TEXFILE,"    \\rlap{\\kern %6.3fin\\lower%6.3fin\\hbox{\\lower%5.2fem\\hbox to 0pt{",
99 			INCHES(DTRX(e1->copyx)), INCHES(DTRY(e1->copyy)), nem);
100 	fprintf(TEXFILE,t&LJUST?"%s\\hss":(t&RJUST?"\\hss %s":"\\hss %s\\hss"),s);
101 	fprintf(TEXFILE,"}}}%%\n");
102 }
103 
104 void
105 spline(double x, double y, double/*sic*/ n, float *p, int dashed, double ddval)
106 {
107 	int k, j;
108 
109 	fprintf(TEXFILE,"    \\special{pa %d %d}%%\n",TRX(x),TRY(y));
110 	for(k=0, j=0; k<n; k++, j+=2){
111 		x += p[j];
112 		y += p[j+1];
113 		fprintf(TEXFILE,"    \\special{pa %d %d}%%\n",TRX(x),TRY(y));
114 	}
115 	fprintf(TEXFILE,"    \\special{sp}%%\n");
116 }
117 
118 void
119 ellipse(double x, double y, double r1, double r2)
120 {
121 	fprintf(TEXFILE, "    \\special{ar %d %d %d %d 0.0 6.2832}%%\n",
122 		TRX(x), TRY(y), SCX(r1), -SCY(r2));
123 }
124 
125 void
126 arc(double xc, double yc, double x0, double y0, double x1, double y1)	/* draw arc with center xc,yc */
127 {
128 	devarc(x0, y0, x1, y1, xc, yc, 1 );   /* radius=1 means counterclockwise */
129 }
130 
131 /* If NOEXPANDDASH is defined, use this instead of the normal dotline
132  * in print().  This dotline relies on vec() noticing that e1->pen
133  * is not SOLIDPEN, and putting out a call to a different postscript
134  * routine.
135  */
136 #ifdef NOEXPANDDASH
137 
138 void
139 dotline(double x0, double y0, double x1, double y1, int ddtype, double ddval)
140 {
141 	if (ddval != 0)
142 		e1->dashlen = ddval;
143 	e1->pen = (ddtype&DOTBIT)? DOTPEN : DASHPEN;
144 	move(x0, y0);
145 	vec(x1, y1);
146 	e1->pen = SOLIDPEN;
147 	e1->dashlen = e0->dashlen;
148 }
149 #endif