1 |
gregl |
3.1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#endif |
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/* |
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* Holodeck display process. |
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*/ |
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#include "rholo.h" |
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#include "rhdisp.h" |
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#include "rhdriver.h" |
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#include "selcall.h" |
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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 |
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21 |
gregl |
3.1 |
HOLO *hdlist[HDMAX+1]; /* global holodeck list */ |
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23 |
gregl |
3.10 |
char cmdlist[DC_NCMDS][8] = DC_INIT; |
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25 |
gregl |
3.1 |
int imm_mode = 0; /* bundles are being delivered immediately */ |
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27 |
gregl |
3.20 |
int do_outside = 0; /* render from outside sections */ |
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29 |
gregl |
3.1 |
char *progname; /* global argv[0] */ |
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gregl |
3.10 |
FILE *sstdin, *sstdout; /* server's standard input and output */ |
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gregl |
3.1 |
|
33 |
gregl |
3.21 |
#ifdef DEBUG |
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#include <sys/types.h> |
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extern time_t time(); |
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static time_t tmodesw; |
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static time_t timm, tadd; |
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static long nimmrays, naddrays; |
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#endif |
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41 |
gregl |
3.10 |
#define RDY_SRV 01 |
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#define RDY_DEV 02 |
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#define RDY_SIN 04 |
44 |
gregl |
3.1 |
|
45 |
gregl |
3.10 |
|
46 |
gregl |
3.1 |
main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
50 |
gregl |
3.10 |
extern int eputs(); |
51 |
gregl |
3.3 |
int rdy, inp, res = 0, pause = 0; |
52 |
gregl |
3.1 |
|
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progname = argv[0]; |
54 |
gregl |
3.10 |
if (argc < 3) |
55 |
gregl |
3.1 |
error(USER, "bad command line arguments"); |
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/* open our device */ |
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dev_open(argv[1]); |
58 |
gregl |
3.10 |
/* open server process i/o */ |
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sstdout = fdopen(atoi(argv[2]), "w"); |
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if (argc < 4 || (inp = atoi(argv[3])) < 0) |
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sstdin = NULL; |
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else |
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sstdin = fdopen(inp, "r"); |
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/* set command error vector */ |
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erract[COMMAND].pf = eputs; |
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gregl |
3.21 |
#ifdef DEBUG |
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tmodesw = time(NULL); |
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#endif |
69 |
gregl |
3.1 |
/* enter main loop */ |
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do { |
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rdy = disp_wait(); |
72 |
gregl |
3.19 |
if (rdy & RDY_SRV) { /* process server result */ |
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res = serv_result(); |
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if (pause && res != DS_SHUTDOWN) { |
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serv_request(DR_ATTEN, 0, NULL); |
76 |
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while ((res = serv_result()) != DS_ACKNOW && |
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res != DS_SHUTDOWN) |
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; |
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} |
80 |
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} |
81 |
gregl |
3.10 |
if (rdy & RDY_DEV) { /* user input from driver */ |
82 |
gregl |
3.3 |
inp = dev_input(); |
83 |
gregl |
3.13 |
if (inp & DFL(DC_SETVIEW)) |
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new_view(&odev.v); |
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if (inp & DFL(DC_GETVIEW)) |
86 |
gregl |
3.10 |
printview(); |
87 |
gregl |
3.13 |
if (inp & DFL(DC_LASTVIEW)) |
88 |
gregl |
3.12 |
new_view(NULL); |
89 |
gregl |
3.13 |
if (inp & DFL(DC_RESUME)) { |
90 |
gregl |
3.3 |
serv_request(DR_NOOP, 0, NULL); |
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pause = 0; |
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} |
93 |
gregl |
3.15 |
if (inp & DFL(DC_PAUSE)) |
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pause = 1; |
95 |
gregl |
3.13 |
if (inp & DFL(DC_REDRAW)) |
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imm_mode = beam_sync() > 0; |
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 |
gregl |
3.13 |
if (inp & DFL(DC_QUIT)) |
108 |
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serv_request(DR_SHUTDOWN, 0, NULL); |
109 |
gregl |
3.3 |
} |
110 |
gregl |
3.10 |
if (rdy & RDY_SIN) /* user input from sstdin */ |
111 |
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switch (usr_input()) { |
112 |
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case DC_PAUSE: |
113 |
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pause = 1; |
114 |
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break; |
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case DC_RESUME: |
116 |
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serv_request(DR_NOOP, 0, NULL); |
117 |
gregl |
3.15 |
/* fall through */ |
118 |
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case DC_KILL: |
119 |
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case DC_RESTART: |
120 |
gregl |
3.10 |
pause = 0; |
121 |
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break; |
122 |
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} |
123 |
gregl |
3.1 |
} while (res != DS_SHUTDOWN); |
124 |
gregl |
3.21 |
#ifdef DEBUG |
125 |
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if (timm && nimmrays) |
126 |
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fprintf(stderr, |
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"%s: %.1f rays recalled/second (%ld rays total)\n", |
128 |
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progname, (double)nimmrays/timm, nimmrays); |
129 |
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if (tadd && naddrays) |
130 |
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fprintf(stderr, |
131 |
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"%s: %.1f rays calculated/second (%ld rays total)\n", |
132 |
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progname, (double)naddrays/tadd, naddrays); |
133 |
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#endif |
134 |
gregl |
3.1 |
/* all done */ |
135 |
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quit(0); |
136 |
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} |
137 |
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138 |
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139 |
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int |
140 |
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disp_wait() /* wait for more input */ |
141 |
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{ |
142 |
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fd_set readset, errset; |
143 |
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int flgs; |
144 |
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int n; |
145 |
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register int i; |
146 |
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/* see if we can avoid select call */ |
147 |
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if (imm_mode || stdin->_cnt > 0) |
148 |
gregl |
3.4 |
return(RDY_SRV); |
149 |
gregl |
3.10 |
if (sstdin != NULL && sstdin->_cnt > 0) |
150 |
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return(RDY_SIN); |
151 |
gregl |
3.1 |
if (dev_flush()) |
152 |
gregl |
3.4 |
return(RDY_DEV); |
153 |
gregl |
3.1 |
/* make the call */ |
154 |
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FD_ZERO(&readset); FD_ZERO(&errset); |
155 |
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FD_SET(0, &readset); |
156 |
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FD_SET(0, &errset); |
157 |
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FD_SET(odev.ifd, &readset); |
158 |
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FD_SET(odev.ifd, &errset); |
159 |
gregl |
3.10 |
n = odev.ifd+1; |
160 |
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if (sstdin != NULL) { |
161 |
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FD_SET(fileno(sstdin), &readset); |
162 |
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if (fileno(sstdin) >= n) |
163 |
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n = fileno(sstdin) + 1; |
164 |
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} |
165 |
gregl |
3.1 |
n = select(n, &readset, NULL, &errset, NULL); |
166 |
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if (n < 0) { |
167 |
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if (errno == EINTR) |
168 |
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return(0); |
169 |
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error(SYSTEM, "select call failure in disp_wait"); |
170 |
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} |
171 |
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flgs = 0; /* flag what's ready */ |
172 |
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if (FD_ISSET(0, &readset) || FD_ISSET(0, &errset)) |
173 |
gregl |
3.4 |
flgs |= RDY_SRV; |
174 |
gregl |
3.1 |
if (FD_ISSET(odev.ifd, &readset) || FD_ISSET(odev.ifd, &errset)) |
175 |
gregl |
3.4 |
flgs |= RDY_DEV; |
176 |
gregl |
3.10 |
if (sstdin != NULL && FD_ISSET(fileno(sstdin), &readset)) |
177 |
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flgs |= RDY_SIN; |
178 |
gregl |
3.1 |
return(flgs); |
179 |
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} |
180 |
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181 |
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182 |
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add_holo(hdg) /* register a new holodeck section */ |
183 |
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HDGRID *hdg; |
184 |
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{ |
185 |
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VIEW nv; |
186 |
gregl |
3.20 |
double d; |
187 |
gregl |
3.1 |
register int hd; |
188 |
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189 |
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for (hd = 0; hd < HDMAX && hdlist[hd] != NULL; hd++) |
190 |
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; |
191 |
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if (hd >= HDMAX) |
192 |
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error(INTERNAL, "too many holodeck sections in add_holo"); |
193 |
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hdlist[hd] = (HOLO *)malloc(sizeof(HOLO)); |
194 |
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if (hdlist[hd] == NULL) |
195 |
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error(SYSTEM, "out of memory in add_holo"); |
196 |
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bcopy((char *)hdg, (char *)hdlist[hd], sizeof(HDGRID)); |
197 |
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hdcompgrid(hdlist[hd]); |
198 |
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if (hd) |
199 |
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return; |
200 |
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/* set initial viewpoint */ |
201 |
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copystruct(&nv, &odev.v); |
202 |
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VSUM(nv.vp, hdlist[0]->orig, hdlist[0]->xv[0], 0.5); |
203 |
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VSUM(nv.vp, nv.vp, hdlist[0]->xv[1], 0.5); |
204 |
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VSUM(nv.vp, nv.vp, hdlist[0]->xv[2], 0.5); |
205 |
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fcross(nv.vdir, hdlist[0]->xv[1], hdlist[0]->xv[2]); |
206 |
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VCOPY(nv.vup, hdlist[0]->xv[2]); |
207 |
gregl |
3.20 |
if (do_outside) { |
208 |
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normalize(nv.vdir); |
209 |
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d = VLEN(hdlist[0]->xv[1]); |
210 |
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d += VLEN(hdlist[0]->xv[2]); |
211 |
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VSUM(nv.vp, nv.vp, nv.vdir, -d); |
212 |
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} |
213 |
gregl |
3.1 |
new_view(&nv); |
214 |
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} |
215 |
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216 |
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217 |
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disp_bundle(p) /* display a ray bundle */ |
218 |
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register PACKHEAD *p; |
219 |
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{ |
220 |
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GCOORD gc[2]; |
221 |
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FVECT ro, rd, wp; |
222 |
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double d; |
223 |
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register int i; |
224 |
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/* get beam coordinates */ |
225 |
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if (p->hd < 0 | p->hd >= HDMAX || hdlist[p->hd] == NULL) |
226 |
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error(INTERNAL, "bad holodeck number in disp_bundle"); |
227 |
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if (!hdbcoord(gc, hdlist[p->hd], p->bi)) |
228 |
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error(INTERNAL, "bad beam index in disp_bundle"); |
229 |
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/* display each ray */ |
230 |
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for (i = p->nr; i--; ) { |
231 |
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hdray(ro, rd, hdlist[p->hd], gc, packra(p)[i].r); |
232 |
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d = hddepth(hdlist[p->hd], packra(p)[i].d); |
233 |
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VSUM(wp, ro, rd, d); /* might be behind viewpoint */ |
234 |
gregl |
3.9 |
dev_value(packra(p)[i].v, wp, rd); |
235 |
gregl |
3.1 |
} |
236 |
gregl |
3.21 |
#ifdef DEBUG |
237 |
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if (imm_mode) nimmrays += p->nr; |
238 |
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else naddrays += p->nr; |
239 |
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#endif |
240 |
gregl |
3.1 |
} |
241 |
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242 |
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243 |
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new_view(v) /* change view parameters */ |
244 |
gregl |
3.12 |
register VIEW *v; |
245 |
gregl |
3.1 |
{ |
246 |
gregl |
3.12 |
static VIEW viewhist[VIEWHISTLEN]; |
247 |
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static unsigned nhist; |
248 |
gregl |
3.1 |
char *err; |
249 |
gregl |
3.12 |
/* restore previous view? */ |
250 |
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if (v == NULL) { |
251 |
gregl |
3.16 |
if (nhist > 1) /* get one before last setting */ |
252 |
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nhist--; |
253 |
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else /* else go to end of list */ |
254 |
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while (nhist < VIEWHISTLEN && viewhist[nhist].type) |
255 |
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nhist++; |
256 |
gregl |
3.12 |
v = viewhist + ((nhist-1)%VIEWHISTLEN); |
257 |
gregl |
3.17 |
} else |
258 |
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again: |
259 |
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if ((err = setview(v)) != NULL) { |
260 |
gregl |
3.12 |
error(COMMAND, err); |
261 |
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return; |
262 |
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} |
263 |
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if (v->type == VT_PAR) { |
264 |
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error(COMMAND, "cannot handle parallel views"); |
265 |
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return; |
266 |
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} |
267 |
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if (!dev_view(v)) /* update display driver */ |
268 |
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goto again; |
269 |
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dev_flush(); /* update screen */ |
270 |
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if (!beam_view(v)) /* update beam list */ |
271 |
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goto again; |
272 |
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/* record new view */ |
273 |
|
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if (v < viewhist || v >= viewhist+VIEWHISTLEN) { |
274 |
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copystruct(viewhist + (nhist%VIEWHISTLEN), v); |
275 |
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nhist++; |
276 |
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} |
277 |
gregl |
3.10 |
} |
278 |
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279 |
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280 |
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int |
281 |
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usr_input() /* get user input and process it */ |
282 |
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{ |
283 |
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VIEW vparams; |
284 |
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char cmd[128]; |
285 |
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register char *args; |
286 |
gregl |
3.11 |
register int i; |
287 |
gregl |
3.10 |
|
288 |
|
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if (fgets(cmd, sizeof(cmd), sstdin) == NULL) |
289 |
|
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return(DC_QUIT); |
290 |
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for (args = cmd; *args && !isspace(*args); args++) |
291 |
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; |
292 |
|
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while (isspace(*args)) |
293 |
|
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*args++ = '\0'; |
294 |
|
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if (!*cmd) |
295 |
|
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return(DC_RESUME); |
296 |
gregl |
3.11 |
if (*args && args[i=strlen(args)-1] == '\n') |
297 |
|
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args[i] = '\0'; |
298 |
|
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for (i = 0; i < DC_NCMDS; i++) |
299 |
|
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if (!strcmp(cmd, cmdlist[i])) |
300 |
gregl |
3.10 |
break; |
301 |
gregl |
3.11 |
if (i >= DC_NCMDS) { |
302 |
gregl |
3.10 |
sprintf(errmsg, "unknown command: %s", cmd); |
303 |
|
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error(COMMAND, errmsg); |
304 |
|
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return(-1); |
305 |
|
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} |
306 |
gregl |
3.11 |
switch (i) { |
307 |
gregl |
3.10 |
case DC_SETVIEW: /* set the view */ |
308 |
|
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copystruct(&vparams, &odev.v); |
309 |
|
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if (!sscanview(&vparams, args)) |
310 |
|
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error(COMMAND, "missing view options"); |
311 |
|
|
else |
312 |
|
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new_view(&vparams); |
313 |
|
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break; |
314 |
|
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case DC_GETVIEW: /* print the current view */ |
315 |
|
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printview(); |
316 |
gregl |
3.12 |
break; |
317 |
|
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case DC_LASTVIEW: /* restore previous view */ |
318 |
|
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new_view(NULL); |
319 |
gregl |
3.10 |
break; |
320 |
|
|
case DC_PAUSE: /* pause the current calculation */ |
321 |
|
|
case DC_RESUME: /* resume the calculation */ |
322 |
|
|
/* handled in main() */ |
323 |
gregl |
3.13 |
break; |
324 |
|
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case DC_REDRAW: /* redraw from server */ |
325 |
|
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imm_mode = beam_sync() > 0; |
326 |
gregl |
3.14 |
break; |
327 |
|
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case DC_KILL: /* kill rtrace process(es) */ |
328 |
|
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serv_request(DR_KILL, 0, NULL); |
329 |
|
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break; |
330 |
|
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case DC_CLOBBER: /* clobber holodeck */ |
331 |
|
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serv_request(DR_CLOBBER, 0, NULL); |
332 |
|
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break; |
333 |
|
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case DC_RESTART: /* restart rtrace */ |
334 |
|
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serv_request(DR_RESTART, 0, NULL); |
335 |
gregl |
3.10 |
break; |
336 |
|
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case DC_QUIT: /* quit request */ |
337 |
|
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serv_request(DR_SHUTDOWN, 0, NULL); |
338 |
|
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break; |
339 |
|
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default: |
340 |
|
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error(CONSISTENCY, "bad command id in usr_input"); |
341 |
|
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} |
342 |
gregl |
3.11 |
return(i); |
343 |
gregl |
3.10 |
} |
344 |
|
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|
345 |
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|
346 |
|
|
printview() /* print our current view to server stdout */ |
347 |
|
|
{ |
348 |
|
|
fputs(VIEWSTR, sstdout); |
349 |
|
|
fprintview(&odev.v, sstdout); |
350 |
|
|
fputc('\n', sstdout); |
351 |
|
|
fflush(sstdout); |
352 |
gregl |
3.1 |
} |
353 |
|
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|
354 |
|
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|
355 |
|
|
int |
356 |
|
|
serv_result() /* get next server result and process it */ |
357 |
|
|
{ |
358 |
|
|
static char *buf = NULL; |
359 |
|
|
static int bufsiz = 0; |
360 |
|
|
MSGHEAD msg; |
361 |
|
|
int n; |
362 |
|
|
/* read message header */ |
363 |
|
|
if (fread((char *)&msg, sizeof(MSGHEAD), 1, stdin) != 1) |
364 |
|
|
goto readerr; |
365 |
|
|
if (msg.nbytes > 0) { /* get the message body */ |
366 |
|
|
if (msg.nbytes > bufsiz) { |
367 |
|
|
if (buf == NULL) |
368 |
|
|
buf = (char *)malloc(bufsiz=msg.nbytes); |
369 |
|
|
else |
370 |
|
|
buf = (char *)realloc(buf, bufsiz=msg.nbytes); |
371 |
|
|
if (buf == NULL) |
372 |
|
|
error(SYSTEM, "out of memory in serv_result"); |
373 |
|
|
} |
374 |
|
|
if (fread(buf, 1, msg.nbytes, stdin) != msg.nbytes) |
375 |
|
|
goto readerr; |
376 |
|
|
} |
377 |
|
|
switch (msg.type) { /* process results */ |
378 |
|
|
case DS_BUNDLE: |
379 |
|
|
if (msg.nbytes < sizeof(PACKHEAD) || |
380 |
|
|
msg.nbytes != packsiz(((PACKHEAD *)buf)->nr)) |
381 |
|
|
error(INTERNAL, "bad display packet from server"); |
382 |
|
|
disp_bundle((PACKHEAD *)buf); |
383 |
|
|
break; |
384 |
|
|
case DS_ADDHOLO: |
385 |
|
|
if (msg.nbytes != sizeof(HDGRID)) |
386 |
|
|
error(INTERNAL, "bad holodeck record from server"); |
387 |
|
|
add_holo((HDGRID *)buf); |
388 |
gregl |
3.20 |
break; |
389 |
|
|
case DS_OUTSECT: |
390 |
|
|
do_outside = 1; |
391 |
gregl |
3.1 |
break; |
392 |
|
|
case DS_STARTIMM: |
393 |
|
|
case DS_ENDIMM: |
394 |
gregl |
3.21 |
#ifdef DEBUG |
395 |
|
|
if (imm_mode != (msg.type==DS_STARTIMM)) { |
396 |
|
|
time_t tnow = time(NULL); |
397 |
|
|
if (imm_mode) timm += tnow - tmodesw; |
398 |
|
|
else tadd += tnow - tmodesw; |
399 |
|
|
tmodesw = tnow; |
400 |
|
|
} |
401 |
|
|
#endif |
402 |
gregl |
3.1 |
imm_mode = msg.type==DS_STARTIMM; |
403 |
|
|
/* fall through */ |
404 |
|
|
case DS_ACKNOW: |
405 |
|
|
case DS_SHUTDOWN: |
406 |
|
|
if (msg.nbytes) { |
407 |
|
|
sprintf(errmsg, |
408 |
|
|
"unexpected body with server message %d", |
409 |
|
|
msg.type); |
410 |
|
|
error(INTERNAL, errmsg); |
411 |
|
|
} |
412 |
|
|
break; |
413 |
|
|
default: |
414 |
|
|
error(INTERNAL, "unrecognized result from server process"); |
415 |
|
|
} |
416 |
|
|
return(msg.type); /* return message type */ |
417 |
|
|
readerr: |
418 |
|
|
if (feof(stdin)) |
419 |
|
|
error(SYSTEM, "server process died"); |
420 |
|
|
error(SYSTEM, "error reading from server process"); |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
|
424 |
|
|
serv_request(type, nbytes, p) /* send a request to the server process */ |
425 |
|
|
int type, nbytes; |
426 |
|
|
char *p; |
427 |
|
|
{ |
428 |
|
|
MSGHEAD msg; |
429 |
|
|
int m; |
430 |
|
|
/* get server's attention for big request */ |
431 |
|
|
if (nbytes >= BIGREQSIZ-sizeof(MSGHEAD)) { |
432 |
|
|
serv_request(DR_ATTEN, 0, NULL); |
433 |
|
|
while ((m = serv_result()) != DS_ACKNOW) |
434 |
|
|
if (m == DS_SHUTDOWN) /* the bugger quit on us */ |
435 |
|
|
quit(0); |
436 |
|
|
} |
437 |
|
|
msg.type = type; /* write and flush the message */ |
438 |
|
|
msg.nbytes = nbytes; |
439 |
|
|
fwrite((char *)&msg, sizeof(MSGHEAD), 1, stdout); |
440 |
|
|
if (nbytes > 0) |
441 |
|
|
fwrite(p, 1, nbytes, stdout); |
442 |
|
|
if (fflush(stdout) < 0) |
443 |
|
|
error(SYSTEM, "write error in serv_request"); |
444 |
gregl |
3.2 |
} |
445 |
|
|
|
446 |
|
|
|
447 |
|
|
eputs(s) /* put error message to stderr */ |
448 |
|
|
register char *s; |
449 |
|
|
{ |
450 |
|
|
static int midline = 0; |
451 |
|
|
|
452 |
|
|
if (!*s) |
453 |
|
|
return; |
454 |
|
|
if (!midline++) { /* prepend line with program name */ |
455 |
|
|
fputs(progname, stderr); |
456 |
|
|
fputs(": ", stderr); |
457 |
|
|
} |
458 |
|
|
fputs(s, stderr); |
459 |
|
|
if (s[strlen(s)-1] == '\n') { |
460 |
|
|
fflush(stderr); |
461 |
|
|
midline = 0; |
462 |
|
|
} |
463 |
gregl |
3.1 |
} |
464 |
|
|
|
465 |
|
|
|
466 |
|
|
quit(code) /* clean up and exit */ |
467 |
|
|
int code; |
468 |
|
|
{ |
469 |
|
|
if (odev.v.type) |
470 |
|
|
dev_close(); |
471 |
|
|
exit(code); |
472 |
|
|
} |