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/*
* 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"
/*LINTLIBRARY*/
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <plot.h>
#include "con.h"
int xnow, ynow, OUTF;
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 (xoffset + xp / xscale);
}
int
yconv(int yp)
{
/* see description of xconv */
yp += 2048;
return (yp / yscale);
}
void
inplot(void)
{
spew(ESC);
spew(PLOTIN);
}
void
outplot(void)
{
spew(ESC);
spew(PLOTOUT);
(void) fflush(stdout);
}
void
spew(char ch)
{
if (ch == UP) {
(void) putc(ESC, stdout);
ch = DOWN;
}
(void) putc(ch, stdout);
}
void
tobotleft(void)
{
move(-2048, -2048);
}
void
reset(void)
{
(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;
}
void
movep(int xg, int yg)
{
int i;
char ch;
if ((xg == xnow) && (yg == ynow))
return;
/* if we need to go to left margin, just CR */
if (xg < xnow / 2) {
spew(CR);
xnow = 0;
}
i = (int)((xg - xnow) / HORZRES);
if (xnow < xg)
ch = RIGHT;
else ch = LEFT;
xnow += i * HORZRES;
i = abs(i);
while (i--)
spew(ch);
i = abs(xg - xnow);
inplot();
while (i--)
spew(ch);
outplot();
i = (int)((yg - ynow) / VERTRES);
if (ynow < yg)
ch = UP;
else ch = DOWN;
ynow += i * VERTRES;
i = abs(i);
while (i--)
spew(ch);
i = abs(yg - ynow);
inplot();
while (i--)
spew(ch);
outplot();
xnow = xg; ynow = yg;
}
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);
}
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