--- ray/src/hd/rhdisp.c	1997/12/18 18:14:15	3.16
+++ ray/src/hd/rhdisp.c	1999/03/08 17:31:49	3.41
@@ -1,4 +1,4 @@
-/* Copyright (c) 1997 Silicon Graphics, Inc. */
+/* Copyright (c) 1999 Silicon Graphics, Inc. */
 
 #ifndef lint
 static char SCCSid[] = "$SunId$ SGI";
@@ -18,16 +18,34 @@ static char SCCSid[] = "$SunId$ SGI";
 #define VIEWHISTLEN	4	/* number of remembered views */
 #endif
 
+#ifndef FSIZDEF
+#define FSIZDEF		0.125	/* default focus frame size */
+#endif
+
 HOLO	*hdlist[HDMAX+1];	/* global holodeck list */
 
+char	*hdgfn[HDMAX];		/* holodeck section geometry list */
+char	*hdpfn[HDMAX];		/* section portal list */
+
 char	cmdlist[DC_NCMDS][8] = DC_INIT;
 
 int	imm_mode = 0;		/* bundles are being delivered immediately */
 
+int	do_outside = 0;		/* render from outside sections */
+
+double	eyesepdist = 1;		/* eye separation distance */
+
 char	*progname;		/* global argv[0] */
 
 FILE	*sstdin, *sstdout;	/* server's standard input and output */
 
+#ifdef DEBUG
+extern time_t	time();
+static time_t	tmodesw;
+static time_t	timm, tadd;
+static long	nimmrays, naddrays;
+#endif
+
 #define RDY_SRV		01
 #define RDY_DEV		02
 #define RDY_SIN		04
@@ -53,25 +71,33 @@ char	*argv[];
 		sstdin = fdopen(inp, "r");
 					/* set command error vector */
 	erract[COMMAND].pf = eputs;
+#ifdef DEBUG
+	tmodesw = time(NULL);
+#endif
 					/* enter main loop */
 	do {
 		rdy = disp_wait();
+		if (rdy & RDY_SRV) {		/* process server result */
+			res = serv_result();
+			if (pause && res != DS_SHUTDOWN) {
+				serv_request(DR_ATTEN, 0, NULL);
+				while ((res = serv_result()) != DS_ACKNOW &&
+						res != DS_SHUTDOWN)
+					;
+			}
+		}
 		if (rdy & RDY_DEV) {		/* user input from driver */
 			inp = dev_input();
 			if (inp & DFL(DC_SETVIEW))
 				new_view(&odev.v);
-			if (inp & DFL(DC_GETVIEW))
-				printview();
-			if (inp & DFL(DC_LASTVIEW))
+			else if (inp & DFL(DC_LASTVIEW))
 				new_view(NULL);
-			if (inp & DFL(DC_RESUME)) {
-				serv_request(DR_NOOP, 0, NULL);
-				pause = 0;
-			}
-			if (inp & DFL(DC_PAUSE))
-				pause = 1;
 			if (inp & DFL(DC_REDRAW))
-				imm_mode = beam_sync() > 0;
+				imm_mode = beam_sync(1) > 0;
+			if (inp & DFL(DC_GETVIEW))
+				printview();
+			if (inp & DFL(DC_FOCUS))
+				set_focus(odev_args);
 			if (inp & DFL(DC_KILL)) {
 				serv_request(DR_KILL, 0, NULL);
 				pause = 0;
@@ -82,10 +108,16 @@ char	*argv[];
 				serv_request(DR_RESTART, 0, NULL);
 				pause = 0;
 			}
+			if (inp & DFL(DC_RESUME)) {
+				serv_request(DR_NOOP, 0, NULL);
+				pause = 0;
+			}
+			if (inp & DFL(DC_PAUSE))
+				pause = 1;
 			if (inp & DFL(DC_QUIT))
 				serv_request(DR_SHUTDOWN, 0, NULL);
 		}
-		if (rdy & RDY_SIN)		/* user input from sstdin */
+		if (rdy & RDY_SIN && !imm_mode)	/* user input from sstdin */
 			switch (usr_input()) {
 			case DC_PAUSE:
 				pause = 1;
@@ -98,16 +130,17 @@ char	*argv[];
 				pause = 0;
 				break;
 			}
-		if (rdy & RDY_SRV) {		/* process server result */
-			res = serv_result();
-			if (pause && res != DS_SHUTDOWN) {
-				serv_request(DR_ATTEN, 0, NULL);
-				while ((res = serv_result()) != DS_ACKNOW &&
-						res != DS_SHUTDOWN)
-					;
-			}
-		}
 	} while (res != DS_SHUTDOWN);
+#ifdef DEBUG
+	if (timm && nimmrays)
+		fprintf(stderr,
+			"%s: %.1f rays recalled/second (%ld rays total)\n",
+				progname, (double)nimmrays/timm, nimmrays);
+	if (tadd && naddrays)
+		fprintf(stderr,
+			"%s: %.1f rays calculated/second (%ld rays total)\n",
+				progname, (double)naddrays/tadd, naddrays);
+#endif
 					/* all done */
 	quit(0);
 }
@@ -121,13 +154,20 @@ disp_wait()			/* wait for more input */
 	int	n;
 	register int	i;
 				/* see if we can avoid select call */
+	if (hdlist[0] == NULL)
+		return(RDY_SRV);	/* initialize first */
+	flgs = 0;		/* flag what's ready already */
 	if (imm_mode || stdin->_cnt > 0)
-		return(RDY_SRV);
+		flgs |= RDY_SRV;
 	if (sstdin != NULL && sstdin->_cnt > 0)
-		return(RDY_SIN);
-	if (dev_flush())
+		flgs |= RDY_SIN;
+	if (odev.inpready)
+		flgs |= RDY_DEV;
+	if (flgs)		/* got something? */
+		return(flgs);
+	if (dev_flush())	/* else flush output & check keyboard+mouse */
 		return(RDY_DEV);
-				/* make the call */
+				/* if nothing, we need to call select */
 	FD_ZERO(&readset); FD_ZERO(&errset);
 	FD_SET(0, &readset);
 	FD_SET(0, &errset);
@@ -136,6 +176,7 @@ disp_wait()			/* wait for more input */
 	n = odev.ifd+1;
 	if (sstdin != NULL) {
 		FD_SET(fileno(sstdin), &readset);
+		FD_SET(fileno(sstdin), &errset);
 		if (fileno(sstdin) >= n)
 			n = fileno(sstdin) + 1;
 	}
@@ -145,21 +186,23 @@ disp_wait()			/* wait for more input */
 			return(0);
 		error(SYSTEM, "select call failure in disp_wait");
 	}
-	flgs = 0;		/* flag what's ready */
 	if (FD_ISSET(0, &readset) || FD_ISSET(0, &errset))
 		flgs |= RDY_SRV;
 	if (FD_ISSET(odev.ifd, &readset) || FD_ISSET(odev.ifd, &errset))
 		flgs |= RDY_DEV;
-	if (sstdin != NULL && FD_ISSET(fileno(sstdin), &readset))
+	if (sstdin != NULL && (FD_ISSET(fileno(sstdin), &readset) ||
+				FD_ISSET(fileno(sstdin), &errset)))
 		flgs |= RDY_SIN;
 	return(flgs);
 }
 
 
-add_holo(hdg)			/* register a new holodeck section */
+add_holo(hdg, gfn, pfn)		/* register a new holodeck section */
 HDGRID	*hdg;
+char	*gfn, *pfn;
 {
 	VIEW	nv;
+	double	d;
 	register int	hd;
 
 	for (hd = 0; hd < HDMAX && hdlist[hd] != NULL; hd++)
@@ -171,6 +214,8 @@ HDGRID	*hdg;
 		error(SYSTEM, "out of memory in add_holo");
 	bcopy((char *)hdg, (char *)hdlist[hd], sizeof(HDGRID));
 	hdcompgrid(hdlist[hd]);
+	hdgfn[hd] = savestr(gfn);
+	hdpfn[hd] = pfn && *pfn ? savestr(pfn) : (char *)NULL;
 	if (hd)
 		return;
 					/* set initial viewpoint */
@@ -180,6 +225,12 @@ HDGRID	*hdg;
 	VSUM(nv.vp, nv.vp, hdlist[0]->xv[2], 0.5);
 	fcross(nv.vdir, hdlist[0]->xv[1], hdlist[0]->xv[2]);
 	VCOPY(nv.vup, hdlist[0]->xv[2]);
+	if (do_outside) {
+		normalize(nv.vdir);
+		d = VLEN(hdlist[0]->xv[1]);
+		d += VLEN(hdlist[0]->xv[2]);
+		VSUM(nv.vp, nv.vp, nv.vdir, -d);
+	}
 	new_view(&nv);
 }
 
@@ -200,9 +251,16 @@ register PACKHEAD	*p;
 	for (i = p->nr; i--; ) {
 		hdray(ro, rd, hdlist[p->hd], gc, packra(p)[i].r);
 		d = hddepth(hdlist[p->hd], packra(p)[i].d);
-		VSUM(wp, ro, rd, d);		/* might be behind viewpoint */
-		dev_value(packra(p)[i].v, wp, rd);
+		if (d < .99*FHUGE) {
+			VSUM(wp, ro, rd, d);	/* might be behind viewpoint */
+			dev_value(packra(p)[i].v, rd, wp);
+		} else
+			dev_value(packra(p)[i].v, rd, NULL);
 	}
+#ifdef DEBUG
+	if (imm_mode) nimmrays += p->nr;
+	else naddrays += p->nr;
+#endif
 }
 
 
@@ -211,6 +269,9 @@ register VIEW	*v;
 {
 	static VIEW	viewhist[VIEWHISTLEN];
 	static unsigned	nhist;
+	VIEW	*dv;
+	int	i, res[2];
+	int2	*slist;
 	char	*err;
 				/* restore previous view? */
 	if (v == NULL) {
@@ -220,20 +281,36 @@ register VIEW	*v;
 			while (nhist < VIEWHISTLEN && viewhist[nhist].type)
 				nhist++;
 		v = viewhist + ((nhist-1)%VIEWHISTLEN);
-	} else if ((err = setview(v)) != NULL) {
+	} else
+again:
+	if ((err = setview(v)) != NULL) {
 		error(COMMAND, err);
 		return;
 	}
-again:
+	if (!dev_view(v))	/* notify display driver */
+		goto again;
 	if (v->type == VT_PAR) {
 		error(COMMAND, "cannot handle parallel views");
 		return;
 	}
-	if (!dev_view(v))	/* update display driver */
-		goto again;
-	dev_flush();		/* update screen */
-	if (!beam_view(v))	/* update beam list */
-		goto again;
+	beam_init(odev.firstuse);	/* compute new beam set */
+	for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++) {
+		if ((slist = beam_view(dv, res[0], res[1])) == NULL) {
+			if (!nhist) {
+				error(COMMAND, "invalid starting view");
+				return;
+			}
+			copystruct(v, viewhist + ((nhist-1)%VIEWHISTLEN));
+			goto again;	/* poss. overloading dev_section()? */
+		}
+		DCHECK(*slist < 0, WARNING, "no visible sections in new_view");
+		for ( ; *slist >= 0; slist++)
+			dev_section(hdgfn[*slist], hdpfn[*slist]);
+	}
+	dev_section(NULL,NULL);	/* end section list */
+	dev_flush();		/* update display */
+				/* update server */
+	imm_mode = beam_sync(odev.firstuse) > 0;
 				/* record new view */
 	if (v < viewhist || v >= viewhist+VIEWHISTLEN) {
 		copystruct(viewhist + (nhist%VIEWHISTLEN), v);
@@ -242,30 +319,92 @@ again:
 }
 
 
+set_focus(args)			/* set focus frame */
+char	*args;
+{
+	double	hcent, vcent, hsiz, vsiz;
+	VIEW	*dv, vwfocus;
+	int	i, res[2];
+
+	i = sscanf(args, "%lf %lf %lf %lf", &hcent, &vcent, &hsiz, &vsiz);
+	if (i < 2 || hcent < 0 || hcent > 1 || vcent < 0 || vcent > 1) {
+		beam_init(0);				/* restore view */
+		for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++)
+			beam_view(dv, res[0], res[1]);
+		beam_sync(0);				/* update server */
+		return;
+	}
+	if (i < 4 || hsiz <= hcent || hsiz > 1 || vsiz <= vcent || vsiz > 1)
+		hsiz = vsiz = FSIZDEF;			/* gave center only */
+	else {
+		hsiz -= hcent; hcent += 0.5*hsiz;	/* gave min and max */
+		vsiz -= vcent; vcent += 0.5*vsiz;
+	}
+	beam_init(0);					/* add basic views */
+	for (i = 0; (dv = dev_auxview(i, res)) != NULL; i++)
+		beam_view(dv, res[0]>>4, res[1]>>4);
+	copystruct(&vwfocus, &odev.v);			/* add focus view */
+	switch (odev.v.type) {
+	case VT_PER:
+		vwfocus.horiz = 2.*180./PI*atan(
+				hsiz * tan(PI/180./2.*odev.v.horiz) );
+		vwfocus.vert = 2.*180./PI*atan(
+				vsiz * tan(PI/180./2.*odev.v.vert) );
+		break;
+	case VT_PAR:
+	case VT_ANG:
+		vwfocus.horiz = hsiz * odev.v.horiz;
+		vwfocus.vert = vsiz * odev.v.vert;
+		break;
+	case VT_HEM:
+		vwfocus.horiz = 2.*180./PI*asin(
+				hsiz * sin(PI/180./2.*odev.v.horiz) );
+		vwfocus.vert = 2.*180./PI*asin(
+				vsiz * sin(PI/180./2.*odev.v.vert) );
+		break;
+	case VT_CYL:
+		vwfocus.horiz = hsiz * odev.v.horiz;
+		vwfocus.vert = 2.*180./PI*atan(
+				vsiz * tan(PI/180./2.*odev.v.vert) );
+		break;
+	default:
+		error(INTERNAL, "bad view type in set_focus");
+	}
+	vwfocus.hoff = (odev.v.hoff + hcent - 0.5)/hsiz;
+	vwfocus.voff = (odev.v.voff + vcent - 0.5)/vsiz;
+	setview(&vwfocus);
+	beam_view(&vwfocus, (int)(3*odev.hres*hsiz)+100,
+			(int)(3*odev.vres*vsiz)+100);
+	beam_sync(0);					/* update server */
+}
+
+
 int
 usr_input()			/* get user input and process it */
 {
 	VIEW	vparams;
-	char	cmd[128];
+	char	cmd[256];
 	register char	*args;
 	register int	i;
 
-	if (fgets(cmd, sizeof(cmd), sstdin) == NULL)
-		return(DC_QUIT);
+	if (fgets(cmd, sizeof(cmd), sstdin) == NULL) {
+		fclose(sstdin);
+		sstdin = NULL;
+		return(-1);
+	}
+	if (*cmd == '\n')
+		return(DC_RESUME);
 	for (args = cmd; *args && !isspace(*args); args++)
 		;
 	while (isspace(*args))
 		*args++ = '\0';
-	if (!*cmd)
-		return(DC_RESUME);
 	if (*args && args[i=strlen(args)-1] == '\n')
 		args[i] = '\0';
 	for (i = 0; i < DC_NCMDS; i++)
 		if (!strcmp(cmd, cmdlist[i]))
 			break;
 	if (i >= DC_NCMDS) {
-		sprintf(errmsg, "unknown command: %s", cmd);
-		error(COMMAND, errmsg);
+		dev_auxcom(cmd, args);
 		return(-1);
 	}
 	switch (i) {
@@ -282,12 +421,16 @@ usr_input()			/* get user input and process it */
 	case DC_LASTVIEW:		/* restore previous view */
 		new_view(NULL);
 		break;
+	case DC_FOCUS:			/* set focus frame */
+		set_focus(args);
+		break;
 	case DC_PAUSE:			/* pause the current calculation */
 	case DC_RESUME:			/* resume the calculation */
 		/* handled in main() */
 		break;
 	case DC_REDRAW:			/* redraw from server */
-		imm_mode = beam_sync() > 0;
+		imm_mode = beam_sync(1) > 0;
+		dev_clear();
 		break;
 	case DC_KILL:			/* kill rtrace process(es) */
 		serv_request(DR_KILL, 0, NULL);
@@ -347,29 +490,45 @@ serv_result()			/* get next server result and process 
 		disp_bundle((PACKHEAD *)buf);
 		break;
 	case DS_ADDHOLO:
-		if (msg.nbytes != sizeof(HDGRID))
+		if (msg.nbytes < sizeof(HDGRID)+2)
 			error(INTERNAL, "bad holodeck record from server");
-		add_holo((HDGRID *)buf);
+		add_holo((HDGRID *)buf, buf+sizeof(HDGRID),
+			buf+sizeof(HDGRID)+strlen(buf+sizeof(HDGRID))+1);
 		break;
+	case DS_OUTSECT:
+		do_outside = 1;
+		goto noargs;
+	case DS_EYESEP:
+		if (msg.nbytes <= 1 || (eyesepdist = atof(buf)) <= FTINY)
+			error(INTERNAL, "bad eye separation from server");
+		break;
 	case DS_STARTIMM:
 	case DS_ENDIMM:
-		imm_mode = msg.type==DS_STARTIMM;
-		if (msg.type == DS_ENDIMM)
-			dev_flush();		/* update display NOW */
-		/* fall through */
+		if (!(imm_mode = msg.type==DS_STARTIMM))
+			dev_flush();
+#ifdef DEBUG
+		{
+			time_t	tnow = time(NULL);
+			if (msg.type==DS_STARTIMM) tadd += tnow - tmodesw;
+			else timm += tnow - tmodesw;
+			tmodesw = tnow;
+		}
+#endif
+		goto noargs;
 	case DS_ACKNOW:
 	case DS_SHUTDOWN:
-		if (msg.nbytes) {
-			sprintf(errmsg,
-				"unexpected body with server message %d",
-					msg.type);
-			error(INTERNAL, errmsg);
-		}
-		break;
+		goto noargs;
 	default:
 		error(INTERNAL, "unrecognized result from server process");
 	}
 	return(msg.type);		/* return message type */
+noargs:
+	if (msg.nbytes) {
+		sprintf(errmsg, "unexpected body with server message %d",
+				msg.type);
+		error(INTERNAL, errmsg);
+	}
+	return(msg.type);
 readerr:
 	if (feof(stdin))
 		error(SYSTEM, "server process died");
@@ -383,6 +542,9 @@ char	*p;
 {
 	MSGHEAD	msg;
 	int	m;
+				/* consistency checks */
+	DCHECK(nbytes < 0 || nbytes > 0 & p == NULL,
+			CONSISTENCY, "bad buffer handed to serv_request");
 				/* get server's attention for big request */
 	if (nbytes >= BIGREQSIZ-sizeof(MSGHEAD)) {
 		serv_request(DR_ATTEN, 0, NULL);
@@ -422,7 +584,9 @@ register char  *s;
 quit(code)			/* clean up and exit */
 int	code;
 {
+	if (code)
+		exit(code);
 	if (odev.v.type)
 		dev_close();
-	exit(code);
+	exit(0);
 }