1 |
gregl |
3.23 |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
gregl |
3.1 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ SGI"; |
5 |
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#endif |
6 |
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7 |
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/* |
8 |
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* Holodeck display process. |
9 |
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*/ |
10 |
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11 |
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#include "rholo.h" |
12 |
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#include "rhdisp.h" |
13 |
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#include "rhdriver.h" |
14 |
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#include "selcall.h" |
15 |
gregl |
3.10 |
#include <ctype.h> |
16 |
gregl |
3.1 |
|
17 |
gregl |
3.12 |
#ifndef VIEWHISTLEN |
18 |
gregl |
3.16 |
#define VIEWHISTLEN 4 /* number of remembered views */ |
19 |
gregl |
3.12 |
#endif |
20 |
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21 |
gwlarson |
3.36 |
#ifndef FSIZDEF |
22 |
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#define FSIZDEF 0.125 /* default focus frame size */ |
23 |
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#endif |
24 |
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25 |
gregl |
3.1 |
HOLO *hdlist[HDMAX+1]; /* global holodeck list */ |
26 |
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27 |
gregl |
3.10 |
char cmdlist[DC_NCMDS][8] = DC_INIT; |
28 |
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29 |
gregl |
3.1 |
int imm_mode = 0; /* bundles are being delivered immediately */ |
30 |
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31 |
gregl |
3.20 |
int do_outside = 0; /* render from outside sections */ |
32 |
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33 |
gwlarson |
3.25 |
double eyesepdist = 1; /* eye separation distance */ |
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35 |
gregl |
3.1 |
char *progname; /* global argv[0] */ |
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37 |
gregl |
3.10 |
FILE *sstdin, *sstdout; /* server's standard input and output */ |
38 |
gregl |
3.1 |
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39 |
gregl |
3.21 |
#ifdef DEBUG |
40 |
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#include <sys/types.h> |
41 |
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extern time_t time(); |
42 |
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static time_t tmodesw; |
43 |
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static time_t timm, tadd; |
44 |
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static long nimmrays, naddrays; |
45 |
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#endif |
46 |
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47 |
gregl |
3.10 |
#define RDY_SRV 01 |
48 |
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#define RDY_DEV 02 |
49 |
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#define RDY_SIN 04 |
50 |
gregl |
3.1 |
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51 |
gregl |
3.10 |
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52 |
gregl |
3.1 |
main(argc, argv) |
53 |
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int argc; |
54 |
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char *argv[]; |
55 |
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{ |
56 |
gregl |
3.10 |
extern int eputs(); |
57 |
gregl |
3.3 |
int rdy, inp, res = 0, pause = 0; |
58 |
gregl |
3.1 |
|
59 |
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progname = argv[0]; |
60 |
gregl |
3.10 |
if (argc < 3) |
61 |
gregl |
3.1 |
error(USER, "bad command line arguments"); |
62 |
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/* open our device */ |
63 |
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dev_open(argv[1]); |
64 |
gregl |
3.10 |
/* open server process i/o */ |
65 |
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sstdout = fdopen(atoi(argv[2]), "w"); |
66 |
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if (argc < 4 || (inp = atoi(argv[3])) < 0) |
67 |
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sstdin = NULL; |
68 |
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else |
69 |
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sstdin = fdopen(inp, "r"); |
70 |
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/* set command error vector */ |
71 |
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erract[COMMAND].pf = eputs; |
72 |
gregl |
3.21 |
#ifdef DEBUG |
73 |
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tmodesw = time(NULL); |
74 |
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#endif |
75 |
gregl |
3.1 |
/* enter main loop */ |
76 |
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do { |
77 |
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rdy = disp_wait(); |
78 |
gregl |
3.19 |
if (rdy & RDY_SRV) { /* process server result */ |
79 |
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res = serv_result(); |
80 |
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if (pause && res != DS_SHUTDOWN) { |
81 |
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serv_request(DR_ATTEN, 0, NULL); |
82 |
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while ((res = serv_result()) != DS_ACKNOW && |
83 |
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res != DS_SHUTDOWN) |
84 |
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; |
85 |
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} |
86 |
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} |
87 |
gregl |
3.10 |
if (rdy & RDY_DEV) { /* user input from driver */ |
88 |
gregl |
3.3 |
inp = dev_input(); |
89 |
gregl |
3.13 |
if (inp & DFL(DC_SETVIEW)) |
90 |
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new_view(&odev.v); |
91 |
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if (inp & DFL(DC_GETVIEW)) |
92 |
gregl |
3.10 |
printview(); |
93 |
gregl |
3.13 |
if (inp & DFL(DC_LASTVIEW)) |
94 |
gregl |
3.12 |
new_view(NULL); |
95 |
gwlarson |
3.36 |
if (inp & DFL(DC_FOCUS)) |
96 |
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set_focus(odev_args); |
97 |
gregl |
3.15 |
if (inp & DFL(DC_KILL)) { |
98 |
gregl |
3.14 |
serv_request(DR_KILL, 0, NULL); |
99 |
gregl |
3.15 |
pause = 0; |
100 |
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} |
101 |
gregl |
3.14 |
if (inp & DFL(DC_CLOBBER)) |
102 |
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serv_request(DR_CLOBBER, 0, NULL); |
103 |
gregl |
3.15 |
if (inp & DFL(DC_RESTART)) { |
104 |
gregl |
3.14 |
serv_request(DR_RESTART, 0, NULL); |
105 |
gregl |
3.15 |
pause = 0; |
106 |
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} |
107 |
gwlarson |
3.32 |
if (inp & DFL(DC_RESUME)) { |
108 |
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serv_request(DR_NOOP, 0, NULL); |
109 |
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pause = 0; |
110 |
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} |
111 |
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if (inp & DFL(DC_PAUSE)) |
112 |
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pause = 1; |
113 |
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if (inp & DFL(DC_REDRAW)) |
114 |
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imm_mode = beam_sync(1) > 0; |
115 |
gregl |
3.13 |
if (inp & DFL(DC_QUIT)) |
116 |
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serv_request(DR_SHUTDOWN, 0, NULL); |
117 |
gregl |
3.3 |
} |
118 |
gwlarson |
3.34 |
if (rdy & RDY_SIN && !imm_mode) /* user input from sstdin */ |
119 |
gregl |
3.10 |
switch (usr_input()) { |
120 |
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case DC_PAUSE: |
121 |
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pause = 1; |
122 |
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break; |
123 |
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case DC_RESUME: |
124 |
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serv_request(DR_NOOP, 0, NULL); |
125 |
gregl |
3.15 |
/* fall through */ |
126 |
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case DC_KILL: |
127 |
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case DC_RESTART: |
128 |
gregl |
3.10 |
pause = 0; |
129 |
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break; |
130 |
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} |
131 |
gregl |
3.1 |
} while (res != DS_SHUTDOWN); |
132 |
gregl |
3.21 |
#ifdef DEBUG |
133 |
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if (timm && nimmrays) |
134 |
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fprintf(stderr, |
135 |
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"%s: %.1f rays recalled/second (%ld rays total)\n", |
136 |
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progname, (double)nimmrays/timm, nimmrays); |
137 |
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if (tadd && naddrays) |
138 |
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fprintf(stderr, |
139 |
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"%s: %.1f rays calculated/second (%ld rays total)\n", |
140 |
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progname, (double)naddrays/tadd, naddrays); |
141 |
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#endif |
142 |
gregl |
3.1 |
/* all done */ |
143 |
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quit(0); |
144 |
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} |
145 |
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146 |
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147 |
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int |
148 |
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disp_wait() /* wait for more input */ |
149 |
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{ |
150 |
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fd_set readset, errset; |
151 |
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int flgs; |
152 |
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int n; |
153 |
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register int i; |
154 |
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/* see if we can avoid select call */ |
155 |
gwlarson |
3.30 |
flgs = 0; /* flag what's ready already */ |
156 |
gregl |
3.1 |
if (imm_mode || stdin->_cnt > 0) |
157 |
gwlarson |
3.30 |
flgs |= RDY_SRV; |
158 |
gregl |
3.10 |
if (sstdin != NULL && sstdin->_cnt > 0) |
159 |
gwlarson |
3.30 |
flgs |= RDY_SIN; |
160 |
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if (odev.inpready) |
161 |
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flgs |= RDY_DEV; |
162 |
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if (flgs) /* got something? */ |
163 |
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return(flgs); |
164 |
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if (dev_flush()) /* else flush output & check keyboard+mouse */ |
165 |
gregl |
3.4 |
return(RDY_DEV); |
166 |
gwlarson |
3.30 |
/* if nothing, we need to call select */ |
167 |
gregl |
3.1 |
FD_ZERO(&readset); FD_ZERO(&errset); |
168 |
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FD_SET(0, &readset); |
169 |
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FD_SET(0, &errset); |
170 |
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FD_SET(odev.ifd, &readset); |
171 |
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FD_SET(odev.ifd, &errset); |
172 |
gregl |
3.10 |
n = odev.ifd+1; |
173 |
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if (sstdin != NULL) { |
174 |
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FD_SET(fileno(sstdin), &readset); |
175 |
gregl |
3.23 |
FD_SET(fileno(sstdin), &errset); |
176 |
gregl |
3.10 |
if (fileno(sstdin) >= n) |
177 |
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n = fileno(sstdin) + 1; |
178 |
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} |
179 |
gregl |
3.1 |
n = select(n, &readset, NULL, &errset, NULL); |
180 |
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if (n < 0) { |
181 |
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if (errno == EINTR) |
182 |
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return(0); |
183 |
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error(SYSTEM, "select call failure in disp_wait"); |
184 |
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} |
185 |
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if (FD_ISSET(0, &readset) || FD_ISSET(0, &errset)) |
186 |
gregl |
3.4 |
flgs |= RDY_SRV; |
187 |
gregl |
3.1 |
if (FD_ISSET(odev.ifd, &readset) || FD_ISSET(odev.ifd, &errset)) |
188 |
gregl |
3.4 |
flgs |= RDY_DEV; |
189 |
gregl |
3.23 |
if (sstdin != NULL && (FD_ISSET(fileno(sstdin), &readset) || |
190 |
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FD_ISSET(fileno(sstdin), &errset))) |
191 |
gregl |
3.10 |
flgs |= RDY_SIN; |
192 |
gregl |
3.1 |
return(flgs); |
193 |
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} |
194 |
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195 |
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196 |
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add_holo(hdg) /* register a new holodeck section */ |
197 |
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HDGRID *hdg; |
198 |
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{ |
199 |
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VIEW nv; |
200 |
gregl |
3.20 |
double d; |
201 |
gregl |
3.1 |
register int hd; |
202 |
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203 |
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for (hd = 0; hd < HDMAX && hdlist[hd] != NULL; hd++) |
204 |
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; |
205 |
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if (hd >= HDMAX) |
206 |
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error(INTERNAL, "too many holodeck sections in add_holo"); |
207 |
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hdlist[hd] = (HOLO *)malloc(sizeof(HOLO)); |
208 |
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if (hdlist[hd] == NULL) |
209 |
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error(SYSTEM, "out of memory in add_holo"); |
210 |
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bcopy((char *)hdg, (char *)hdlist[hd], sizeof(HDGRID)); |
211 |
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hdcompgrid(hdlist[hd]); |
212 |
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if (hd) |
213 |
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return; |
214 |
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/* set initial viewpoint */ |
215 |
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copystruct(&nv, &odev.v); |
216 |
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VSUM(nv.vp, hdlist[0]->orig, hdlist[0]->xv[0], 0.5); |
217 |
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VSUM(nv.vp, nv.vp, hdlist[0]->xv[1], 0.5); |
218 |
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VSUM(nv.vp, nv.vp, hdlist[0]->xv[2], 0.5); |
219 |
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fcross(nv.vdir, hdlist[0]->xv[1], hdlist[0]->xv[2]); |
220 |
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VCOPY(nv.vup, hdlist[0]->xv[2]); |
221 |
gregl |
3.20 |
if (do_outside) { |
222 |
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normalize(nv.vdir); |
223 |
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d = VLEN(hdlist[0]->xv[1]); |
224 |
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d += VLEN(hdlist[0]->xv[2]); |
225 |
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VSUM(nv.vp, nv.vp, nv.vdir, -d); |
226 |
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} |
227 |
gregl |
3.1 |
new_view(&nv); |
228 |
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} |
229 |
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230 |
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231 |
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disp_bundle(p) /* display a ray bundle */ |
232 |
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register PACKHEAD *p; |
233 |
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{ |
234 |
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GCOORD gc[2]; |
235 |
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FVECT ro, rd, wp; |
236 |
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double d; |
237 |
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register int i; |
238 |
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/* get beam coordinates */ |
239 |
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if (p->hd < 0 | p->hd >= HDMAX || hdlist[p->hd] == NULL) |
240 |
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error(INTERNAL, "bad holodeck number in disp_bundle"); |
241 |
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if (!hdbcoord(gc, hdlist[p->hd], p->bi)) |
242 |
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error(INTERNAL, "bad beam index in disp_bundle"); |
243 |
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/* display each ray */ |
244 |
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for (i = p->nr; i--; ) { |
245 |
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hdray(ro, rd, hdlist[p->hd], gc, packra(p)[i].r); |
246 |
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d = hddepth(hdlist[p->hd], packra(p)[i].d); |
247 |
gwlarson |
3.29 |
if (d < .99*FHUGE) { |
248 |
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VSUM(wp, ro, rd, d); /* might be behind viewpoint */ |
249 |
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dev_value(packra(p)[i].v, rd, wp); |
250 |
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} else |
251 |
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dev_value(packra(p)[i].v, rd, NULL); |
252 |
gregl |
3.1 |
} |
253 |
gregl |
3.21 |
#ifdef DEBUG |
254 |
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if (imm_mode) nimmrays += p->nr; |
255 |
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else naddrays += p->nr; |
256 |
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#endif |
257 |
gregl |
3.1 |
} |
258 |
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259 |
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260 |
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new_view(v) /* change view parameters */ |
261 |
gregl |
3.12 |
register VIEW *v; |
262 |
gregl |
3.1 |
{ |
263 |
gregl |
3.12 |
static VIEW viewhist[VIEWHISTLEN]; |
264 |
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static unsigned nhist; |
265 |
gwlarson |
3.24 |
VIEW *dv; |
266 |
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int i, res[2]; |
267 |
gregl |
3.1 |
char *err; |
268 |
gregl |
3.12 |
/* restore previous view? */ |
269 |
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if (v == NULL) { |
270 |
gregl |
3.16 |
if (nhist > 1) /* get one before last setting */ |
271 |
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nhist--; |
272 |
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else /* else go to end of list */ |
273 |
|
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while (nhist < VIEWHISTLEN && viewhist[nhist].type) |
274 |
|
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nhist++; |
275 |
gregl |
3.12 |
v = viewhist + ((nhist-1)%VIEWHISTLEN); |
276 |
gregl |
3.17 |
} else |
277 |
|
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again: |
278 |
|
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if ((err = setview(v)) != NULL) { |
279 |
gregl |
3.12 |
error(COMMAND, err); |
280 |
|
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return; |
281 |
|
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} |
282 |
|
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if (v->type == VT_PAR) { |
283 |
|
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error(COMMAND, "cannot handle parallel views"); |
284 |
|
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return; |
285 |
|
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} |
286 |
gwlarson |
3.24 |
if (!dev_view(v)) /* notify display driver */ |
287 |
gregl |
3.12 |
goto again; |
288 |
|
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dev_flush(); /* update screen */ |
289 |
gwlarson |
3.27 |
beam_init(0); /* compute new beam set */ |
290 |
gwlarson |
3.24 |
for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
291 |
|
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if (!beam_view(dv, res[0], res[1])) { |
292 |
|
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if (!nhist) { |
293 |
|
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error(COMMAND, "invalid starting view"); |
294 |
|
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return; |
295 |
|
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} |
296 |
|
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copystruct(v, viewhist + ((nhist-1)%VIEWHISTLEN)); |
297 |
|
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goto again; |
298 |
gwlarson |
3.34 |
} |
299 |
|
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/* update server */ |
300 |
|
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imm_mode = beam_sync(0) > 0; |
301 |
gregl |
3.12 |
/* record new view */ |
302 |
|
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if (v < viewhist || v >= viewhist+VIEWHISTLEN) { |
303 |
|
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copystruct(viewhist + (nhist%VIEWHISTLEN), v); |
304 |
|
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nhist++; |
305 |
|
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} |
306 |
gregl |
3.10 |
} |
307 |
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308 |
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|
309 |
gwlarson |
3.36 |
set_focus(args) /* set focus frame */ |
310 |
|
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char *args; |
311 |
|
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{ |
312 |
|
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double hcent, vcent, hsiz, vsiz; |
313 |
|
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VIEW *dv, vwfocus; |
314 |
|
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int i, res[2]; |
315 |
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|
316 |
|
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i = sscanf(args, "%lf %lf %lf %lf", &hcent, &vcent, &hsiz, &vsiz); |
317 |
|
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if (i < 2 || hcent < 0 || hcent > 1 || vcent < 0 || vcent > 1) { |
318 |
|
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beam_init(0); /* restore view */ |
319 |
|
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for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
320 |
|
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beam_view(dv, res[0], res[1]); |
321 |
|
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beam_sync(0); /* update server */ |
322 |
|
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return; |
323 |
|
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} |
324 |
|
|
if (i < 4 || hsiz <= hcent || hsiz > 1 || vsiz <= vcent || vsiz > 1) |
325 |
|
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hsiz = vsiz = FSIZDEF; /* gave center only */ |
326 |
|
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else { |
327 |
|
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hsiz -= hcent; hcent += 0.5*hsiz; /* gave min and max */ |
328 |
|
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vsiz -= vcent; vcent += 0.5*vsiz; |
329 |
|
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} |
330 |
|
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beam_init(0); /* add basic views */ |
331 |
|
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for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
332 |
|
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beam_view(dv, res[0]>>4, res[1]>>4); |
333 |
|
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copystruct(&vwfocus, &odev.v); /* add focus view */ |
334 |
|
|
switch (odev.v.type) { |
335 |
|
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case VT_PER: |
336 |
|
|
vwfocus.horiz = 2.*180./PI*atan( |
337 |
|
|
hsiz * tan(PI/180./2.*odev.v.horiz) ); |
338 |
|
|
vwfocus.vert = 2.*180./PI*atan( |
339 |
|
|
vsiz * tan(PI/180./2.*odev.v.vert) ); |
340 |
|
|
break; |
341 |
|
|
case VT_PAR: |
342 |
|
|
case VT_ANG: |
343 |
|
|
vwfocus.horiz = hsiz * odev.v.horiz; |
344 |
|
|
vwfocus.vert = vsiz * odev.v.vert; |
345 |
|
|
break; |
346 |
|
|
case VT_HEM: |
347 |
|
|
vwfocus.horiz = 2.*180./PI*asin( |
348 |
|
|
hsiz * sin(PI/180./2.*odev.v.horiz) ); |
349 |
|
|
vwfocus.vert = 2.*180./PI*asin( |
350 |
|
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vsiz * sin(PI/180./2.*odev.v.vert) ); |
351 |
|
|
break; |
352 |
|
|
case VT_CYL: |
353 |
|
|
vwfocus.horiz = hsiz * odev.v.horiz; |
354 |
|
|
vwfocus.vert = 2.*180./PI*atan( |
355 |
|
|
vsiz * tan(PI/180./2.*odev.v.vert) ); |
356 |
|
|
break; |
357 |
|
|
default: |
358 |
|
|
error(INTERNAL, "bad view type in set_focus"); |
359 |
|
|
} |
360 |
|
|
vwfocus.hoff = (odev.v.hoff + hcent - 0.5)/hsiz; |
361 |
|
|
vwfocus.voff = (odev.v.voff + vcent - 0.5)/vsiz; |
362 |
|
|
setview(&vwfocus); |
363 |
|
|
beam_view(&vwfocus, (int)(3*odev.hres*hsiz)+100, |
364 |
|
|
(int)(3*odev.vres*vsiz)+100); |
365 |
|
|
beam_sync(0); /* update server */ |
366 |
|
|
} |
367 |
|
|
|
368 |
|
|
|
369 |
gregl |
3.10 |
int |
370 |
|
|
usr_input() /* get user input and process it */ |
371 |
|
|
{ |
372 |
|
|
VIEW vparams; |
373 |
gregl |
3.23 |
char cmd[256]; |
374 |
gregl |
3.10 |
register char *args; |
375 |
gregl |
3.11 |
register int i; |
376 |
gregl |
3.10 |
|
377 |
gregl |
3.23 |
if (fgets(cmd, sizeof(cmd), sstdin) == NULL) { |
378 |
|
|
fclose(sstdin); |
379 |
|
|
sstdin = NULL; |
380 |
gwlarson |
3.26 |
return(-1); |
381 |
gregl |
3.23 |
} |
382 |
gwlarson |
3.31 |
if (*cmd == '\n') |
383 |
gwlarson |
3.26 |
return(DC_RESUME); |
384 |
gregl |
3.10 |
for (args = cmd; *args && !isspace(*args); args++) |
385 |
|
|
; |
386 |
|
|
while (isspace(*args)) |
387 |
|
|
*args++ = '\0'; |
388 |
gregl |
3.11 |
if (*args && args[i=strlen(args)-1] == '\n') |
389 |
|
|
args[i] = '\0'; |
390 |
|
|
for (i = 0; i < DC_NCMDS; i++) |
391 |
|
|
if (!strcmp(cmd, cmdlist[i])) |
392 |
gregl |
3.10 |
break; |
393 |
gregl |
3.11 |
if (i >= DC_NCMDS) { |
394 |
gwlarson |
3.26 |
dev_auxcom(cmd, args); |
395 |
gregl |
3.10 |
return(-1); |
396 |
|
|
} |
397 |
gregl |
3.11 |
switch (i) { |
398 |
gregl |
3.10 |
case DC_SETVIEW: /* set the view */ |
399 |
|
|
copystruct(&vparams, &odev.v); |
400 |
|
|
if (!sscanview(&vparams, args)) |
401 |
|
|
error(COMMAND, "missing view options"); |
402 |
|
|
else |
403 |
|
|
new_view(&vparams); |
404 |
|
|
break; |
405 |
|
|
case DC_GETVIEW: /* print the current view */ |
406 |
|
|
printview(); |
407 |
gregl |
3.12 |
break; |
408 |
|
|
case DC_LASTVIEW: /* restore previous view */ |
409 |
|
|
new_view(NULL); |
410 |
gwlarson |
3.36 |
break; |
411 |
|
|
case DC_FOCUS: /* set focus frame */ |
412 |
|
|
set_focus(args); |
413 |
gregl |
3.10 |
break; |
414 |
|
|
case DC_PAUSE: /* pause the current calculation */ |
415 |
|
|
case DC_RESUME: /* resume the calculation */ |
416 |
|
|
/* handled in main() */ |
417 |
gregl |
3.13 |
break; |
418 |
|
|
case DC_REDRAW: /* redraw from server */ |
419 |
gwlarson |
3.24 |
imm_mode = beam_sync(1) > 0; |
420 |
gregl |
3.22 |
dev_clear(); |
421 |
gregl |
3.14 |
break; |
422 |
|
|
case DC_KILL: /* kill rtrace process(es) */ |
423 |
|
|
serv_request(DR_KILL, 0, NULL); |
424 |
|
|
break; |
425 |
|
|
case DC_CLOBBER: /* clobber holodeck */ |
426 |
|
|
serv_request(DR_CLOBBER, 0, NULL); |
427 |
|
|
break; |
428 |
|
|
case DC_RESTART: /* restart rtrace */ |
429 |
|
|
serv_request(DR_RESTART, 0, NULL); |
430 |
gregl |
3.10 |
break; |
431 |
|
|
case DC_QUIT: /* quit request */ |
432 |
|
|
serv_request(DR_SHUTDOWN, 0, NULL); |
433 |
|
|
break; |
434 |
|
|
default: |
435 |
|
|
error(CONSISTENCY, "bad command id in usr_input"); |
436 |
|
|
} |
437 |
gregl |
3.11 |
return(i); |
438 |
gregl |
3.10 |
} |
439 |
|
|
|
440 |
|
|
|
441 |
|
|
printview() /* print our current view to server stdout */ |
442 |
|
|
{ |
443 |
|
|
fputs(VIEWSTR, sstdout); |
444 |
|
|
fprintview(&odev.v, sstdout); |
445 |
|
|
fputc('\n', sstdout); |
446 |
|
|
fflush(sstdout); |
447 |
gregl |
3.1 |
} |
448 |
|
|
|
449 |
|
|
|
450 |
|
|
int |
451 |
|
|
serv_result() /* get next server result and process it */ |
452 |
|
|
{ |
453 |
|
|
static char *buf = NULL; |
454 |
|
|
static int bufsiz = 0; |
455 |
|
|
MSGHEAD msg; |
456 |
|
|
int n; |
457 |
|
|
/* read message header */ |
458 |
|
|
if (fread((char *)&msg, sizeof(MSGHEAD), 1, stdin) != 1) |
459 |
|
|
goto readerr; |
460 |
|
|
if (msg.nbytes > 0) { /* get the message body */ |
461 |
|
|
if (msg.nbytes > bufsiz) { |
462 |
|
|
if (buf == NULL) |
463 |
|
|
buf = (char *)malloc(bufsiz=msg.nbytes); |
464 |
|
|
else |
465 |
|
|
buf = (char *)realloc(buf, bufsiz=msg.nbytes); |
466 |
|
|
if (buf == NULL) |
467 |
|
|
error(SYSTEM, "out of memory in serv_result"); |
468 |
|
|
} |
469 |
|
|
if (fread(buf, 1, msg.nbytes, stdin) != msg.nbytes) |
470 |
|
|
goto readerr; |
471 |
|
|
} |
472 |
|
|
switch (msg.type) { /* process results */ |
473 |
|
|
case DS_BUNDLE: |
474 |
|
|
if (msg.nbytes < sizeof(PACKHEAD) || |
475 |
|
|
msg.nbytes != packsiz(((PACKHEAD *)buf)->nr)) |
476 |
|
|
error(INTERNAL, "bad display packet from server"); |
477 |
|
|
disp_bundle((PACKHEAD *)buf); |
478 |
|
|
break; |
479 |
|
|
case DS_ADDHOLO: |
480 |
|
|
if (msg.nbytes != sizeof(HDGRID)) |
481 |
|
|
error(INTERNAL, "bad holodeck record from server"); |
482 |
|
|
add_holo((HDGRID *)buf); |
483 |
gregl |
3.20 |
break; |
484 |
|
|
case DS_OUTSECT: |
485 |
|
|
do_outside = 1; |
486 |
gwlarson |
3.28 |
goto noargs; |
487 |
gwlarson |
3.25 |
case DS_EYESEP: |
488 |
|
|
if (msg.nbytes <= 1 || (eyesepdist = atof(buf)) <= FTINY) |
489 |
|
|
error(INTERNAL, "bad eye separation from server"); |
490 |
gregl |
3.1 |
break; |
491 |
|
|
case DS_STARTIMM: |
492 |
|
|
case DS_ENDIMM: |
493 |
gregl |
3.21 |
#ifdef DEBUG |
494 |
gwlarson |
3.35 |
{ |
495 |
gregl |
3.21 |
time_t tnow = time(NULL); |
496 |
gwlarson |
3.35 |
if (msg.type==DS_STARTIMM) tadd += tnow - tmodesw; |
497 |
|
|
else timm += tnow - tmodesw; |
498 |
gregl |
3.21 |
tmodesw = tnow; |
499 |
|
|
} |
500 |
|
|
#endif |
501 |
gwlarson |
3.34 |
if (!(imm_mode = msg.type==DS_STARTIMM)) |
502 |
|
|
dev_flush(); |
503 |
gwlarson |
3.28 |
goto noargs; |
504 |
gregl |
3.1 |
case DS_ACKNOW: |
505 |
|
|
case DS_SHUTDOWN: |
506 |
gwlarson |
3.28 |
goto noargs; |
507 |
gregl |
3.1 |
default: |
508 |
|
|
error(INTERNAL, "unrecognized result from server process"); |
509 |
|
|
} |
510 |
|
|
return(msg.type); /* return message type */ |
511 |
gwlarson |
3.28 |
noargs: |
512 |
|
|
if (msg.nbytes) { |
513 |
|
|
sprintf(errmsg, "unexpected body with server message %d", |
514 |
|
|
msg.type); |
515 |
|
|
error(INTERNAL, errmsg); |
516 |
|
|
} |
517 |
|
|
return(msg.type); |
518 |
gregl |
3.1 |
readerr: |
519 |
|
|
if (feof(stdin)) |
520 |
|
|
error(SYSTEM, "server process died"); |
521 |
|
|
error(SYSTEM, "error reading from server process"); |
522 |
|
|
} |
523 |
|
|
|
524 |
|
|
|
525 |
|
|
serv_request(type, nbytes, p) /* send a request to the server process */ |
526 |
|
|
int type, nbytes; |
527 |
|
|
char *p; |
528 |
|
|
{ |
529 |
|
|
MSGHEAD msg; |
530 |
|
|
int m; |
531 |
gwlarson |
3.33 |
/* consistency checks */ |
532 |
|
|
#ifdef DEBUG |
533 |
|
|
if (nbytes < 0 || nbytes > 0 & p == NULL) |
534 |
|
|
error(CONSISTENCY, "bad buffer handed to serv_request"); |
535 |
|
|
#endif |
536 |
gregl |
3.1 |
/* get server's attention for big request */ |
537 |
|
|
if (nbytes >= BIGREQSIZ-sizeof(MSGHEAD)) { |
538 |
|
|
serv_request(DR_ATTEN, 0, NULL); |
539 |
|
|
while ((m = serv_result()) != DS_ACKNOW) |
540 |
|
|
if (m == DS_SHUTDOWN) /* the bugger quit on us */ |
541 |
|
|
quit(0); |
542 |
|
|
} |
543 |
|
|
msg.type = type; /* write and flush the message */ |
544 |
|
|
msg.nbytes = nbytes; |
545 |
|
|
fwrite((char *)&msg, sizeof(MSGHEAD), 1, stdout); |
546 |
|
|
if (nbytes > 0) |
547 |
|
|
fwrite(p, 1, nbytes, stdout); |
548 |
|
|
if (fflush(stdout) < 0) |
549 |
|
|
error(SYSTEM, "write error in serv_request"); |
550 |
gregl |
3.2 |
} |
551 |
|
|
|
552 |
|
|
|
553 |
|
|
eputs(s) /* put error message to stderr */ |
554 |
|
|
register char *s; |
555 |
|
|
{ |
556 |
|
|
static int midline = 0; |
557 |
|
|
|
558 |
|
|
if (!*s) |
559 |
|
|
return; |
560 |
|
|
if (!midline++) { /* prepend line with program name */ |
561 |
|
|
fputs(progname, stderr); |
562 |
|
|
fputs(": ", stderr); |
563 |
|
|
} |
564 |
|
|
fputs(s, stderr); |
565 |
|
|
if (s[strlen(s)-1] == '\n') { |
566 |
|
|
fflush(stderr); |
567 |
|
|
midline = 0; |
568 |
|
|
} |
569 |
gregl |
3.1 |
} |
570 |
|
|
|
571 |
|
|
|
572 |
|
|
quit(code) /* clean up and exit */ |
573 |
|
|
int code; |
574 |
|
|
{ |
575 |
|
|
if (odev.v.type) |
576 |
|
|
dev_close(); |
577 |
|
|
exit(code); |
578 |
|
|
} |