From b6d98463b416e9d95bc88f948b4abdff6b24aede Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Fri, 14 Apr 2006 00:04:03 +0000
Subject: tpic

---
 src/cmd/tpic/pltex.c | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 src/cmd/tpic/pltex.c

(limited to 'src/cmd/tpic/pltex.c')

diff --git a/src/cmd/tpic/pltex.c b/src/cmd/tpic/pltex.c
new file mode 100644
index 00000000..e757f195
--- /dev/null
+++ b/src/cmd/tpic/pltex.c
@@ -0,0 +1,149 @@
+/* replacement for pltroff.c to produce a TeX file that makes a box */
+
+#include <stdio.h>
+#include <math.h>
+#include "pic.h"
+
+double rangex, rangey;  /* probably already available inside pic somewhere */
+extern int dbg;
+int frameno;
+
+/*-----------copied from old version----------*/
+
+void
+arrow(double x0, double y0, double x1, double y1, double w, double h, double ang, int nhead) 	/* draw arrow (without shaft) */
+	/* head wid w, len h, rotated ang */
+	/* and drawn with nhead lines */
+{
+	double alpha, rot, drot, hyp;
+	float dx, dy;
+	int i;
+
+	rot = atan2(w / 2, h);
+	hyp = sqrt(w/2 * w/2 + h * h);
+	alpha = atan2(y1-y0, x1-x0) + ang;
+	if (nhead < 2)
+		nhead = 2;
+	for (i = nhead-1; i >= 0; i--) {
+		drot = 2 * rot / (double) (nhead-1) * (double) i;
+		dx = hyp * cos(alpha + PI - rot + drot);
+		dy = hyp * sin(alpha + PI - rot + drot);
+		line(x1+dx, y1+dy, x1, y1);
+	}
+}
+
+
+/*-----------new code----------*/
+
+void
+printlf(int line, char *name)
+{
+}
+
+void
+fillstart(double v)	/* only choose black, light grey (.75), or white, for now */
+{
+	if (v<.05)
+		fprintf(TEXFILE, "    \\special{bk}%%\n");
+	else if (v>.95)
+		fprintf(TEXFILE, "    \\special{wh}%%\n");
+	else
+		fprintf(TEXFILE, "    \\special{sh}%%\n");
+}
+
+void
+fillend(void)
+{
+}
+
+void
+troff(char *s)
+{
+	int size;
+
+	if (strncmp(s, ".ps", 3) == 0) {
+	    if (sscanf(&s[3], " %d ", &size) > 0) {
+		fprintf(TEXFILE, "    \\special{pn %d}%%\n", size);
+		e1->pdiam = size;
+	    } else fprintf(stderr, "Malformed .ps command: %s\n", s);
+	}
+}
+
+
+void
+space(double x0, double y0, double x1, double y1)	/* set limits of page */
+{
+	e0->sidex = e1->sidex = deltx*1000;
+	e0->sidey = e1->sidey = e0->bottom = e1->bottom = delty*1000;
+	range(x0, y0, x1, y1);
+}
+
+void
+dot(void)
+{
+	/* use .005" radius at nominal 9pt pen size */
+	disc(e1->copyx,e1->copyy,(e1->pdiam/9.0)*(4.3/e1->scalex));
+}
+
+void
+label(char *s, int t, int nh)	/* text s of type t nh half-lines up */
+{
+	double nem;
+
+	if (t & ABOVE)
+		nh++;
+	else if (t & BELOW)
+		nh--;
+	nem = .2 - nh*.6;
+	fprintf(TEXFILE,"    \\rlap{\\kern %6.3fin\\lower%6.3fin\\hbox{\\lower%5.2fem\\hbox to 0pt{",
+			INCHES(DTRX(e1->copyx)), INCHES(DTRY(e1->copyy)), nem);
+	fprintf(TEXFILE,t&LJUST?"%s\\hss":(t&RJUST?"\\hss %s":"\\hss %s\\hss"),s);
+	fprintf(TEXFILE,"}}}%%\n");
+}
+
+void
+spline(double x, double y, double/*sic*/ n, float *p, int dashed, double ddval)
+{
+	int k, j;
+
+	fprintf(TEXFILE,"    \\special{pa %d %d}%%\n",TRX(x),TRY(y));
+	for(k=0, j=0; k<n; k++, j+=2){
+		x += p[j];
+		y += p[j+1];
+		fprintf(TEXFILE,"    \\special{pa %d %d}%%\n",TRX(x),TRY(y));
+	}
+	fprintf(TEXFILE,"    \\special{sp}%%\n");
+}
+
+void
+ellipse(double x, double y, double r1, double r2)
+{
+	fprintf(TEXFILE, "    \\special{ar %d %d %d %d 0.0 6.2832}%%\n",
+		TRX(x), TRY(y), SCX(r1), -SCY(r2));
+}
+
+void
+arc(double xc, double yc, double x0, double y0, double x1, double y1)	/* draw arc with center xc,yc */
+{
+	devarc(x0, y0, x1, y1, xc, yc, 1 );   /* radius=1 means counterclockwise */
+}
+
+/* If NOEXPANDDASH is defined, use this instead of the normal dotline
+ * in print().  This dotline relies on vec() noticing that e1->pen
+ * is not SOLIDPEN, and putting out a call to a different postscript
+ * routine.
+ */
+#ifdef NOEXPANDDASH
+
+void
+dotline(double x0, double y0, double x1, double y1, int ddtype, double ddval)
+{
+	if (ddval != 0)
+		e1->dashlen = ddval;
+	e1->pen = (ddtype&DOTBIT)? DOTPEN : DASHPEN;
+	move(x0, y0);
+	vec(x1, y1);
+	e1->pen = SOLIDPEN;
+	e1->dashlen = e0->dashlen;
+}
+#endif
-- 
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