meta/lib4014/subr.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
#ifndef lint
static char sccsid[] = "@(#)subr.c      4.1 (Berkeley) 6/27/83";
#endif

#include <stdio.h>
float obotx = 0.;
float oboty = 0.;
float botx = 0.;
float boty = 0.;
float scalex = 1.;
float scaley = 1.;
int scaleflag;

int oloy = -1;
int ohiy = -1;
int ohix = -1;
int oextra = -1;
cont(x,y){
        int hix,hiy,lox,loy,extra;
        int n;
        x = (x-obotx)*scalex + botx;
        y = (y-oboty)*scaley + boty;
        hix=(x>>7) & 037;
        hiy=(y>>7) & 037;
        lox = (x>>2)&037;
        loy=(y>>2)&037;
        extra=x&03+(y<<2)&014;
        n = (abs(hix-ohix) + abs(hiy-ohiy) + 6) / 12;
        if(hiy != ohiy){
                putch(hiy|040);
                ohiy=hiy;
        }
        if(hix != ohix){
                if(extra != oextra){
                        putch(extra|0140);
                        oextra=extra;
                }
                putch(loy|0140);
                putch(hix|040);
                ohix=hix;
                oloy=loy;
        }
        else{
                if(extra != oextra){
                        putch(extra|0140);
                        putch(loy|0140);
                        oextra=extra;
                        oloy=loy;
                }
                else if(loy != oloy){
                        putch(loy|0140);
                        oloy=loy;
                }
        }
        putch(lox|0100);
        while(n--)
                putch(0);
}

putch(c){
        putc(c,stdout);
}
Revision:	1.1
Committed:	Sat Feb 22 02:07:26 2003 UTC (21 years, 3 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id$";
3	#endif
4	#ifndef lint
5	static char sccsid[] = "@(#)subr.c 4.1 (Berkeley) 6/27/83";
6	#endif
7
8	#include <stdio.h>
9	float obotx = 0.;
10	float oboty = 0.;
11	float botx = 0.;
12	float boty = 0.;
13	float scalex = 1.;
14	float scaley = 1.;
15	int scaleflag;
16
17	int oloy = -1;
18	int ohiy = -1;
19	int ohix = -1;
20	int oextra = -1;
21	cont(x,y){
22	int hix,hiy,lox,loy,extra;
23	int n;
24	x = (x-obotx)*scalex + botx;
25	y = (y-oboty)*scaley + boty;
26	hix=(x>>7) & 037;
27	hiy=(y>>7) & 037;
28	lox = (x>>2)&037;
29	loy=(y>>2)&037;
30	extra=x&03+(y<<2)&014;
31	n = (abs(hix-ohix) + abs(hiy-ohiy) + 6) / 12;
32	if(hiy != ohiy){
33	putch(hiy\|040);
34	ohiy=hiy;
35	}
36	if(hix != ohix){
37	if(extra != oextra){
38	putch(extra\|0140);
39	oextra=extra;
40	}
41	putch(loy\|0140);
42	putch(hix\|040);
43	ohix=hix;
44	oloy=loy;
45	}
46	else{
47	if(extra != oextra){
48	putch(extra\|0140);
49	putch(loy\|0140);
50	oextra=extra;
51	oloy=loy;
52	}
53	else if(loy != oloy){
54	putch(loy\|0140);
55	oloy=loy;
56	}
57	}
58	putch(lox\|0100);
59	while(n--)
60	putch(0);
61	}
62
63	putch(c){
64	putc(c,stdout);
65	}