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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* Holodeck display process. |
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*/ |
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#include <string.h> |
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#include <ctype.h> |
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|
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#include "rterror.h" |
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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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#include <ctype.h> |
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|
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#ifndef VIEWHISTLEN |
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#define VIEWHISTLEN 4 /* number of remembered views */ |
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#define FSIZDEF 0.125 /* default focus frame size */ |
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#endif |
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|
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#if defined(freebsd) |
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#define fbufcnt(f) ((f)->_r) |
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#elif defined(__GNUC__) |
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#define fbufcnt(f) ((f)->_IO_read_end - (f)->_IO_read_ptr) |
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#else |
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#define fbufcnt(f) ((f)->_cnt) |
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#endif |
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|
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HOLO *hdlist[HDMAX+1]; /* global holodeck list */ |
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|
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char *hdgfn[HDMAX]; /* holodeck section geometry list */ |
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FILE *sstdin, *sstdout; /* server's standard input and output */ |
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|
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#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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#define RDY_DEV 02 |
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#define RDY_SIN 04 |
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|
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static int disp_wait(void); |
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static void add_holo(HDGRID *hdg, char *gfn, char *pfn); |
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static void disp_bundle(PACKHEAD *p); |
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static void new_view(register VIEW *v); |
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static void set_focus(char *args); |
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static int usr_input(void); |
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static void printview(void); |
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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|
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int |
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main( |
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int argc, |
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char *argv[] |
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) |
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{ |
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extern int eputs(); |
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int rdy, inp, res = 0, pause = 0; |
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|
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progname = argv[0]; |
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#endif |
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/* all done */ |
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quit(0); |
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return 0; /* pro forma return */ |
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} |
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int |
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disp_wait() /* wait for more input */ |
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static int |
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disp_wait(void) /* wait for more input */ |
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{ |
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fd_set readset, errset; |
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int flgs; |
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int n; |
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register int i; |
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/* see if we can avoid select call */ |
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if (hdlist[0] == NULL) |
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return(RDY_SRV); /* initialize first */ |
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flgs = 0; /* flag what's ready already */ |
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if (imm_mode || stdin->_cnt > 0) |
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if (imm_mode || fbufcnt(stdin) > 0) |
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flgs |= RDY_SRV; |
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if (sstdin != NULL && sstdin->_cnt > 0) |
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if (sstdin != NULL && fbufcnt(sstdin) > 0) |
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flgs |= RDY_SIN; |
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if (odev.inpready) |
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flgs |= RDY_DEV; |
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} |
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add_holo(hdg, gfn, pfn) /* register a new holodeck section */ |
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HDGRID *hdg; |
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char *gfn, *pfn; |
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static void |
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add_holo( /* register a new holodeck section */ |
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HDGRID *hdg, |
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char *gfn, |
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char *pfn |
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) |
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{ |
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VIEW nv; |
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double d; |
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hdlist[hd] = (HOLO *)malloc(sizeof(HOLO)); |
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if (hdlist[hd] == NULL) |
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error(SYSTEM, "out of memory in add_holo"); |
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bcopy((char *)hdg, (char *)hdlist[hd], sizeof(HDGRID)); |
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memcpy((void *)hdlist[hd], (void *)hdg, sizeof(HDGRID)); |
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hdcompgrid(hdlist[hd]); |
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hdgfn[hd] = savestr(gfn); |
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hdpfn[hd] = pfn && *pfn ? savestr(pfn) : (char *)NULL; |
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if (hd) |
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return; |
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/* set initial viewpoint */ |
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copystruct(&nv, &odev.v); |
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nv = odev.v; |
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VSUM(nv.vp, hdlist[0]->orig, hdlist[0]->xv[0], 0.5); |
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VSUM(nv.vp, nv.vp, hdlist[0]->xv[1], 0.5); |
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VSUM(nv.vp, nv.vp, hdlist[0]->xv[2], 0.5); |
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} |
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disp_bundle(p) /* display a ray bundle */ |
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register PACKHEAD *p; |
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static void |
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disp_bundle( /* display a ray bundle */ |
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register PACKHEAD *p |
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) |
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{ |
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GCOORD gc[2]; |
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FVECT ro, rd, wp; |
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double d; |
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register int i; |
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/* get beam coordinates */ |
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if (p->hd < 0 | p->hd >= HDMAX || hdlist[p->hd] == NULL) |
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if ((p->hd < 0) | (p->hd >= HDMAX) || hdlist[p->hd] == NULL) |
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error(INTERNAL, "bad holodeck number in disp_bundle"); |
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if (!hdbcoord(gc, hdlist[p->hd], p->bi)) |
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error(INTERNAL, "bad beam index in disp_bundle"); |
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} |
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new_view(v) /* change view parameters */ |
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register VIEW *v; |
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static void |
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new_view( /* change view parameters */ |
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register VIEW *v |
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) |
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{ |
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static VIEW viewhist[VIEWHISTLEN]; |
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static unsigned nhist; |
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VIEW *dv; |
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int i, res[2]; |
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int2 *slist; |
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int16 *slist; |
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char *err; |
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/* restore previous view? */ |
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if (v == NULL) { |
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error(COMMAND, "invalid starting view"); |
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return; |
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} |
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copystruct(v, viewhist + ((nhist-1)%VIEWHISTLEN)); |
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goto again; /* poss. overloading dev_section()? */ |
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*v = *(viewhist + ((nhist-1)%VIEWHISTLEN)); |
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goto again; /* XXX overloading dev_section()? */ |
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} |
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DCHECK(*slist < 0, WARNING, "no visible sections in new_view"); |
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for ( ; *slist >= 0; slist++) |
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imm_mode = beam_sync(odev.firstuse) > 0; |
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/* record new view */ |
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if (v < viewhist || v >= viewhist+VIEWHISTLEN) { |
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copystruct(viewhist + (nhist%VIEWHISTLEN), v); |
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*(viewhist + (nhist%VIEWHISTLEN)) = *v; |
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nhist++; |
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} |
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} |
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set_focus(args) /* set focus frame */ |
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char *args; |
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static void |
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set_focus( /* set focus frame */ |
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char *args |
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) |
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{ |
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double hcent, vcent, hsiz, vsiz; |
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VIEW *dv, vwfocus; |
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beam_init(0); /* add basic views */ |
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for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) |
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beam_view(dv, res[0]>>4, res[1]>>4); |
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copystruct(&vwfocus, &odev.v); /* add focus view */ |
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vwfocus = odev.v; /* add focus view */ |
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switch (odev.v.type) { |
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case VT_PER: |
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vwfocus.horiz = 2.*180./PI*atan( |
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vwfocus.horiz = hsiz * odev.v.horiz; |
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vwfocus.vert = vsiz * odev.v.vert; |
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break; |
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case VT_PLS: |
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vwfocus.horiz = hsiz * sin((PI/180./2.)*odev.v.horiz) / |
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(1.0 + cos((PI/180./2.)*odev.v.horiz)); |
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vwfocus.horiz *= vwfocus.horiz; |
389 |
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vwfocus.horiz = (2.*180./PI)*acos((1. - vwfocus.horiz) / |
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(1. + vwfocus.horiz)); |
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vwfocus.vert = vsiz * sin((PI/180./2.)*odev.v.vert) / |
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(1.0 + cos((PI/180./2.)*odev.v.vert)); |
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vwfocus.vert *= vwfocus.vert; |
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vwfocus.vert = (2.*180./PI)*acos((1. - vwfocus.vert) / |
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(1. + vwfocus.vert)); |
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break; |
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case VT_HEM: |
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vwfocus.horiz = 2.*180./PI*asin( |
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hsiz * sin(PI/180./2.*odev.v.horiz) ); |
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} |
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int |
421 |
< |
usr_input() /* get user input and process it */ |
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> |
static int |
421 |
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usr_input(void) /* get user input and process it */ |
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{ |
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VIEW vparams; |
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char cmd[256]; |
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} |
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switch (i) { |
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case DC_SETVIEW: /* set the view */ |
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< |
copystruct(&vparams, &odev.v); |
450 |
> |
vparams = odev.v; |
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if (!sscanview(&vparams, args)) |
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error(COMMAND, "missing view options"); |
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else |
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} |
490 |
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491 |
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492 |
< |
printview() /* print our current view to server stdout */ |
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> |
static void |
493 |
> |
printview(void) /* print our current view to server stdout */ |
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{ |
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fputs(VIEWSTR, sstdout); |
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fprintview(&odev.v, sstdout); |
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} |
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501 |
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502 |
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int |
503 |
< |
serv_result() /* get next server result and process it */ |
502 |
> |
extern int |
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> |
serv_result(void) /* get next server result and process it */ |
504 |
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{ |
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static char *buf = NULL; |
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static int bufsiz = 0; |
507 |
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MSGHEAD msg; |
470 |
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int n; |
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/* read message header */ |
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if (fread((char *)&msg, sizeof(MSGHEAD), 1, stdin) != 1) |
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goto readerr; |
513 |
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if (buf == NULL) |
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buf = (char *)malloc(bufsiz=msg.nbytes); |
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else |
516 |
< |
buf = (char *)realloc(buf, bufsiz=msg.nbytes); |
516 |
> |
buf = (char *)realloc((void *)buf, |
517 |
> |
bufsiz=msg.nbytes); |
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if (buf == NULL) |
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error(SYSTEM, "out of memory in serv_result"); |
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} |
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break; |
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case DS_STARTIMM: |
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case DS_ENDIMM: |
546 |
< |
if (!(imm_mode = msg.type==DS_STARTIMM)) |
546 |
> |
if (!(imm_mode = (msg.type==DS_STARTIMM))) |
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dev_flush(); |
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#ifdef DEBUG |
549 |
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{ |
572 |
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if (feof(stdin)) |
573 |
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error(SYSTEM, "server process died"); |
574 |
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error(SYSTEM, "error reading from server process"); |
575 |
+ |
return -1; |
576 |
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} |
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578 |
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|
579 |
< |
serv_request(type, nbytes, p) /* send a request to the server process */ |
580 |
< |
int type, nbytes; |
581 |
< |
char *p; |
579 |
> |
extern void |
580 |
> |
serv_request( /* send a request to the server process */ |
581 |
> |
int type, |
582 |
> |
int nbytes, |
583 |
> |
char *p |
584 |
> |
) |
585 |
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{ |
586 |
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MSGHEAD msg; |
587 |
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int m; |
605 |
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} |
606 |
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|
607 |
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|
608 |
< |
eputs(s) /* put error message to stderr */ |
609 |
< |
register char *s; |
608 |
> |
void |
609 |
> |
eputs( /* put error message to stderr */ |
610 |
> |
register char *s |
611 |
> |
) |
612 |
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{ |
613 |
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static int midline = 0; |
614 |
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626 |
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} |
627 |
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628 |
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|
629 |
< |
quit(code) /* clean up and exit */ |
630 |
< |
int code; |
629 |
> |
void |
630 |
> |
quit( /* clean up and exit */ |
631 |
> |
int code |
632 |
> |
) |
633 |
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{ |
634 |
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if (code) |
635 |
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exit(code); |