1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
28*0Sstevel@tonic-gate * Use is subject to license terms.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */
32*0Sstevel@tonic-gate /*LINTLIBRARY*/
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate #include <stdlib.h>
35*0Sstevel@tonic-gate #include <math.h>
36*0Sstevel@tonic-gate #include "con.h"
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate short xnow, ynow;
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate static void
iline(short cx0,short cy0,short cx1,short cy1)41*0Sstevel@tonic-gate iline(short cx0, short cy0, short cx1, short cy1)
42*0Sstevel@tonic-gate {
43*0Sstevel@tonic-gate int maxp, tt;
44*0Sstevel@tonic-gate short j;
45*0Sstevel@tonic-gate char chx, chy;
46*0Sstevel@tonic-gate float xd, yd;
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate movep(cx0, cy0);
49*0Sstevel@tonic-gate maxp = (int)(sqrt(dist2(cx0, cy0, cx1, cy1)) / 2.);
50*0Sstevel@tonic-gate xd = cx1 - cx0;
51*0Sstevel@tonic-gate yd = cy1 - cy0;
52*0Sstevel@tonic-gate if (xd >= 0)
53*0Sstevel@tonic-gate chx = RIGHT;
54*0Sstevel@tonic-gate else chx = LEFT;
55*0Sstevel@tonic-gate if (yd >= 0)
56*0Sstevel@tonic-gate chy = UP;
57*0Sstevel@tonic-gate else chy = DOWN;
58*0Sstevel@tonic-gate if (maxp == 0) {
59*0Sstevel@tonic-gate xd = 0;
60*0Sstevel@tonic-gate yd = 0;
61*0Sstevel@tonic-gate } else {
62*0Sstevel@tonic-gate xd /= maxp;
63*0Sstevel@tonic-gate yd /= maxp;
64*0Sstevel@tonic-gate }
65*0Sstevel@tonic-gate inplot();
66*0Sstevel@tonic-gate for (tt = 0; tt <= maxp; tt++) {
67*0Sstevel@tonic-gate j = (short)(cx0 + xd * tt - xnow);
68*0Sstevel@tonic-gate xnow += j;
69*0Sstevel@tonic-gate j = abs(j);
70*0Sstevel@tonic-gate while (j-- > 0)
71*0Sstevel@tonic-gate spew(chx);
72*0Sstevel@tonic-gate j = (short)(cy0 + yd * tt - ynow);
73*0Sstevel@tonic-gate ynow += j;
74*0Sstevel@tonic-gate j = abs(j);
75*0Sstevel@tonic-gate while (j-- > 0)
76*0Sstevel@tonic-gate spew(chy);
77*0Sstevel@tonic-gate spew('.');
78*0Sstevel@tonic-gate }
79*0Sstevel@tonic-gate outplot();
80*0Sstevel@tonic-gate }
81*0Sstevel@tonic-gate
82*0Sstevel@tonic-gate void
line(short x0,short y0,short x1,short y1)83*0Sstevel@tonic-gate line(short x0, short y0, short x1, short y1)
84*0Sstevel@tonic-gate {
85*0Sstevel@tonic-gate iline(xconv(xsc(x0)), yconv(ysc(y0)),
86*0Sstevel@tonic-gate xconv(xsc(x1)), yconv(ysc(y1)));
87*0Sstevel@tonic-gate }
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate
90*0Sstevel@tonic-gate void
cont(short x0,short y0)91*0Sstevel@tonic-gate cont(short x0, short y0)
92*0Sstevel@tonic-gate {
93*0Sstevel@tonic-gate iline(xnow, ynow, xconv(xsc(x0)), yconv(ysc(y0)));
94*0Sstevel@tonic-gate }
95