/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */
/*LINTLIBRARY*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <plot.h>
#include "con.h"
static void
delay(void)
{
int i;
for (i = 0; i < 2; i++) {
(void) ioctl(OUTF, TCSBRK, 1);
}
}
int
xconv(int xp)
{
/*
* x position input is -2047 to +2047,
* output must be 0 to PAGSIZ*HORZRES
*/
xp += 2048;
/* the computation is newx = xp*(PAGSIZ*HORZRES)/4096 */
return (int)(xoffset + xp / xscale);
}
int
yconv(int yp)
{
/* see description of xconv */
yp += 2048;
return (int)(yp / yscale);
}
void
inplot(void)
{
spew(ESC);
spew(INPLOT);
}
void
outplot(void)
{
spew(ESC);
spew(ACK);
spew(ESC);
spew(ACK);
(void) fflush(stdout);
}
void
spew(char ch)
{
(void) putc(ch, stdout);
}
void
tobotleft(void)
{
move(-2048, -2048);
}
void
reset(void)
{
struct termio ITTY;
(void) signal(SIGINT, SIG_IGN);
outplot();
(void) ioctl(OUTF, TCSETAW, &ITTY);
_exit(0);
}
float
dist2(int x1, int y1, int x2, int y2)
{
float t, v;
t = x2 - x1;
v = y1 - y2;
return (t * t + v * v);
}
void
swap(int *pa, int *pb)
{
int t;
t = *pa;
*pa = *pb;
*pb = t;
}
#define DOUBLE 010
#define ADDR 0100
#define COM 060
#define MAXX 070
#define MAXY 07
#define SPACES 7
void
movep(int ix, int iy)
{
int dx, dy, remx, remy, pts, i;
int xd, yd;
char c, addr, command;
if ((xnow == ix) && (ynow == iy))
return;
inplot();
dx = ix - xnow;
dy = iy - ynow;
command = COM|PENUP|((dx < 0) << 1)|(dy < 0);
dx = abs(dx);
dy = abs(dy);
xd = dx / (SPACES*2);
yd = dy / (SPACES*2);
pts = xd < yd ? xd : yd;
if ((i = pts) > 0) {
c = command|DOUBLE;
addr = ADDR;
if (xd > 0)
addr |= MAXX;
if (yd > 0)
addr |= MAXY;
spew(c);
delay();
while (i--) {
spew(addr);
delay();
}
}
if (xd != yd) {
if (xd > pts) {
i = xd - pts;
addr = ADDR|MAXX;
} else {
i = yd - pts;
addr = ADDR|MAXY;
}
c = command|DOUBLE;
spew(c);
delay();
while (i--) {
spew(addr);
delay();
}
}
remx = dx - xd * SPACES * 2;
remy = dy - yd * SPACES * 2;
addr = ADDR;
i = 0;
if (remx > 7) {
i = 1;
addr |= MAXX;
remx -= 7;
}
if (remy > 7) {
i = 1;
addr |= MAXY;
remy -= 7;
}
while (i--) {
spew(command);
delay();
spew(addr);
delay();
}
if ((remx > 0) || (remy > 0)) {
spew(command);
delay();
spew(ADDR|remx << 3|remy);
delay();
}
xnow = ix;
ynow = iy;
outplot();
}
int
xsc(int xi)
{
int xa;
xa = (int)((xi - obotx) * scalex + botx);
return (xa);
}
int
ysc(int yi)
{
int ya;
ya = (int)((yi - oboty) * scaley + boty);
return (ya);
}