src/hd/rhpict.c

#ifndef lint
static const char       RCSid[] = "$Id: rhpict.c,v 3.15 2003/10/20 16:01:55 greg Exp $";
#endif
/*
 * Radiance holodeck picture generator
 */

#include <string.h>

#include "platform.h"
#include "rholo.h"
#include "view.h"

char    *progname;              /* our program name */
char    *hdkfile;               /* holodeck file name */
char    gargc;                  /* global argc */
char    **gargv;                /* global argv */

VIEW    myview = STDVIEW;       /* current output view */
int     xres = 512, yres = 512; /* max. horizontal and vertical resolution */
char    *outspec = NULL;        /* output file specification */
double  randfrac = -1.;         /* random resampling fraction */
double  pixaspect = 1.;         /* pixel aspect ratio */
int     seqstart = 0;           /* sequence start frame */
double  expval = 1.;            /* exposure value */

COLOR   *mypixel;               /* pixels being rendered */
float   *myweight;              /* weights (used to compute final pixels) */
float   *mydepth;               /* depth values (visibility culling) */
int     hres, vres;             /* current horizontal and vertical res. */

extern int      nowarn;         /* turn warnings off? */


main(argc, argv)
int     argc;
char    *argv[];
{
        int     i, rval;

        gargc = argc; gargv = argv;
        progname = argv[0];                     /* get arguments */
        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
                rval = getviewopt(&myview, argc-i, argv+i);
                if (rval >= 0) {                /* view option */
                        i += rval;
                        continue;
                }
                switch (argv[i][1]) {
                case 'w':                       /* turn off warnings */
                        nowarn++;
                        break;
                case 'p':                       /* pixel aspect/exposure */
                        if (badarg(argc-i-1,argv+i+1,"f"))
                                goto userr;
                        if (argv[i][2] == 'a')
                                pixaspect = atof(argv[++i]);
                        else if (argv[i][2] == 'e') {
                                expval = atof(argv[++i]);
                                if ((argv[i][0] == '-') | (argv[i][0] == '+'))
                                        expval = pow(2., expval);
                        } else
                                goto userr;
                        break;
                case 'x':                       /* horizontal resolution */
                        if (badarg(argc-i-1,argv+i+1,"i"))
                                goto userr;
                        xres = atoi(argv[++i]);
                        break;
                case 'y':                       /* vertical resolution */
                        if (badarg(argc-i-1,argv+i+1,"i"))
                                goto userr;
                        yres = atoi(argv[++i]);
                        break;
                case 'o':                       /* output file specificaiton */
                        if (badarg(argc-i-1,argv+i+1,"s"))
                                goto userr;
                        outspec = argv[++i];
                        break;
                case 'r':                       /* random sampling */
                        if (badarg(argc-i-1,argv+i+1,"f"))
                                goto userr;
                        randfrac = atof(argv[++i]);
                        break;
                case 's':                       /* smooth sampling */
                        randfrac = -1.;
                        break;
                case 'S':                       /* sequence start */
                        if (badarg(argc-i-1,argv+i+1,"i"))
                                goto userr;
                        seqstart = atoi(argv[++i]);
                        break;
                case 'v':                       /* view file */
                        if (argv[i][2]!='f' || badarg(argc-i-1,argv+i+1,"s"))
                                goto userr;
                        rval = viewfile(argv[++i], &myview, NULL);
                        if (rval < 0) {
                                sprintf(errmsg, "cannot open view file \"%s\"",
                                                argv[i]);
                                error(SYSTEM, errmsg);
                        } else if (rval == 0) {
                                sprintf(errmsg, "bad view file \"%s\"",
                                                argv[i]);
                                error(USER, errmsg);
                        }
                        break;
                default:
                        goto userr;
                }
        }
                                                /* open holodeck file */
        if (i != argc-1)
                goto userr;
        hdkfile = argv[i];
        initialize();
                                                /* render picture(s) */
        if (seqstart <= 0)
                dopicture(0);
        else
                while (nextview(&myview, stdin) != EOF)
                        dopicture(seqstart++);
        quit(0);                                /* all done! */
userr:
        fprintf(stderr,
"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
                        progname);
        quit(1);
}


dopicture(fn)                   /* render view from holodeck */
int     fn;
{
        char    *err;
        int     rval;
        BEAMLIST        blist;

        if ((err = setview(&myview)) != NULL) {
                sprintf(errmsg, "%s -- skipping frame %d", err, fn);
                error(WARNING, errmsg);
                return;
        }
        startpicture(fn);               /* open output picture */
                                        /* determine relevant beams */
        viewbeams(&myview, hres, vres, &blist);
                                        /* render image */
        if (blist.nb > 0) {
                render_frame(blist.bl, blist.nb);
                free((void *)blist.bl);
        } else {
                sprintf(errmsg, "no section visible in frame %d", fn);
                error(WARNING, errmsg);
        }
        rval = endpicture();            /* write pixel values */
        if (rval < 0) {
                sprintf(errmsg, "error writing frame %d", fn);
                error(SYSTEM, errmsg);
        }
#ifdef DEBUG
        if (blist.nb > 0 & rval > 0) {
                sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)",
                                rval, fn, 100.*rval/(hres*vres));
                error(WARNING, errmsg);
        }
#endif
}


render_frame(bl, nb)            /* render frame from beam values */
register PACKHEAD       *bl;
int     nb;
{
        extern void     pixBeam();
        register HDBEAMI        *bil;
        register int    i;

        if (nb <= 0) return;
        if ((bil = (HDBEAMI *)malloc(nb*sizeof(HDBEAMI))) == NULL)
                error(SYSTEM, "out of memory in render_frame");
        for (i = nb; i--; ) {
                bil[i].h = hdlist[bl[i].hd];
                bil[i].b = bl[i].bi;
        }
        hdloadbeams(bil, nb, pixBeam);
        pixFinish(randfrac);
        free((void *)bil);
}


startpicture(fn)                /* initialize picture for rendering & output */
int     fn;
{
        extern char     VersionID[];
        double  pa = pixaspect;
        char    fname[256];
                                /* compute picture resolution */
        hres = xres; vres = yres;
        normaspect(viewaspect(&myview), &pa, &hres, &vres);
                                /* prepare output */
        if (outspec != NULL) {
                sprintf(fname, outspec, fn);
                if (freopen(fname, "w", stdout) == NULL) {
                        sprintf(errmsg, "cannot open output \"%s\"", fname);
                        error(SYSTEM, errmsg);
                }
        }
                                /* write header */
        newheader("RADIANCE", stdout);
        printf("SOFTWARE= %s\n", VersionID);
        printargs(gargc, gargv, stdout);
        if (fn)
                printf("FRAME=%d\n", fn);
        fputs(VIEWSTR, stdout);
        fprintview(&myview, stdout);
        fputc('\n', stdout);
        if ((pa < 0.99) | (pa > 1.01))
                fputaspect(pa, stdout);
        if ((expval < 0.99) | (expval > 1.01))
                fputexpos(expval, stdout);
        fputformat(COLRFMT, stdout);
        fputc('\n', stdout);
                                /* write resolution (standard order) */
        fprtresolu(hres, vres, stdout);
                                /* prepare image buffers */
        memset((char *)mypixel, '\0', hres*vres*sizeof(COLOR));
        memset((char *)myweight, '\0', hres*vres*sizeof(float));
        memset((char *)mydepth, '\0', hres*vres*sizeof(float));
}


int
endpicture()                    /* finish and write out pixels */
{
        int     lastr = -1, nunrend = 0;
        int32   lastp, lastrp;
        register int32  p;
        register double d;
                                /* compute final pixel values */
        for (p = hres*vres; p--; ) {
                if (myweight[p] <= FTINY) {
                        if (lastr >= 0) {
                                if (p/hres == lastp/hres)
                                        copycolor(mypixel[p], mypixel[lastp]);
                                else
                                        copycolor(mypixel[p], mypixel[lastrp]);
                        }
                        nunrend++;
                        continue;
                }
                d = expval/myweight[p];
                scalecolor(mypixel[p], d);
                if ((lastp=p)/hres != lastr)
                        lastr = (lastrp=p)/hres;
        }
                                /* write each scanline */
        for (p = vres; p--; )
                if (fwritescan(mypixel+p*hres, hres, stdout) < 0)
                        return(-1);
        if (fflush(stdout) == EOF)
                return(-1);
        return(nunrend);
}


initialize()                    /* initialize holodeck and buffers */
{
        int     fd;
        FILE    *fp;
        int     n;
        int32   nextloc;
                                        /* open holodeck file */
        if ((fp = fopen(hdkfile, "r")) == NULL) {
                sprintf(errmsg, "cannot open \"%s\" for reading", hdkfile);
                error(SYSTEM, errmsg);
        }
                                        /* check header format */
        checkheader(fp, HOLOFMT, NULL);
                                        /* check magic number */
        if (getw(fp) != HOLOMAGIC) {
                sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
                                hdkfile);
                error(USER, errmsg);
        }
        nextloc = ftell(fp);                    /* get stdio position */
        fd = dup(fileno(fp));                   /* dup file descriptor */
        fclose(fp);                             /* done with stdio */
        for (n = 0; nextloc > 0L; n++) {        /* initialize each section */
                lseek(fd, (off_t)nextloc, SEEK_SET);
                read(fd, (char *)&nextloc, sizeof(nextloc));
                hdinit(fd, NULL);
        }
                                        /* allocate picture buffer */
        mypixel = (COLOR *)bmalloc(xres*yres*sizeof(COLOR));
        myweight = (float *)bmalloc(xres*yres*sizeof(float));
        mydepth = (float *)bmalloc(xres*yres*sizeof(float));
        if ((mypixel == NULL) | (myweight == NULL) | (mydepth == NULL))
                error(SYSTEM, "out of memory in initialize");
}


void
eputs(s)                        /* put error message to stderr */
register char  *s;
{
        static int  midline = 0;

        if (!*s)
                return;
        if (!midline++) {       /* prepend line with program name */
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (s[strlen(s)-1] == '\n') {
                fflush(stderr);
                midline = 0;
        }
}
Revision:	3.16
Committed:	Wed Oct 22 02:06:34 2003 UTC (20 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 3.15:	+2 -2 lines
Log Message:	Fewer complaints if "platform.h" precedes "standard.h"
#	User	Rev	Content
1	gwlarson	3.1	#ifndef lint
2	greg	3.16	static const char RCSid[] = "$Id: rhpict.c,v 3.15 2003/10/20 16:01:55 greg Exp $";
3	gwlarson	3.1	#endif
4			/*
5			* Radiance holodeck picture generator
6			*/
7
8	schorsch	3.11	#include <string.h>
9
10	greg	3.16	#include "platform.h"
11	gwlarson	3.1	#include "rholo.h"
12			#include "view.h"
13
14			char progname; / our program name */
15			char hdkfile; / holodeck file name */
16	gwlarson	3.7	char gargc; /* global argc */
17			char *gargv; / global argv */
18	gwlarson	3.1
19			VIEW myview = STDVIEW; /* current output view */
20			int xres = 512, yres = 512; /* max. horizontal and vertical resolution */
21			char outspec = NULL; / output file specification */
22	gwlarson	3.6	double randfrac = -1.; /* random resampling fraction */
23	gwlarson	3.1	double pixaspect = 1.; /* pixel aspect ratio */
24			int seqstart = 0; /* sequence start frame */
25			double expval = 1.; /* exposure value */
26
27			COLOR mypixel; / pixels being rendered */
28			float myweight; / weights (used to compute final pixels) */
29	gwlarson	3.2	float mydepth; / depth values (visibility culling) */
30	gwlarson	3.1	int hres, vres; /* current horizontal and vertical res. */
31
32			extern int nowarn; /* turn warnings off? */
33
34
35			main(argc, argv)
36			int argc;
37			char *argv[];
38			{
39			int i, rval;
40
41	gwlarson	3.7	gargc = argc; gargv = argv;
42	gwlarson	3.1	progname = argv[0]; /* get arguments */
43			for (i = 1; i < argc && argv[i][0] == '-'; i++) {
44			rval = getviewopt(&myview, argc-i, argv+i);
45			if (rval >= 0) { /* view option */
46			i += rval;
47			continue;
48			}
49			switch (argv[i][1]) {
50			case 'w': /* turn off warnings */
51			nowarn++;
52			break;
53			case 'p': /* pixel aspect/exposure */
54			if (badarg(argc-i-1,argv+i+1,"f"))
55			goto userr;
56	gwlarson	3.3	if (argv[i][2] == 'a')
57	gwlarson	3.1	pixaspect = atof(argv[++i]);
58	gwlarson	3.3	else if (argv[i][2] == 'e') {
59	gwlarson	3.1	expval = atof(argv[++i]);
60	schorsch	3.14	if ((argv[i][0] == '-') \| (argv[i][0] == '+'))
61	gwlarson	3.1	expval = pow(2., expval);
62			} else
63			goto userr;
64			break;
65			case 'x': /* horizontal resolution */
66			if (badarg(argc-i-1,argv+i+1,"i"))
67			goto userr;
68			xres = atoi(argv[++i]);
69			break;
70			case 'y': /* vertical resolution */
71			if (badarg(argc-i-1,argv+i+1,"i"))
72			goto userr;
73			yres = atoi(argv[++i]);
74			break;
75			case 'o': /* output file specificaiton */
76			if (badarg(argc-i-1,argv+i+1,"s"))
77			goto userr;
78			outspec = argv[++i];
79			break;
80	gwlarson	3.5	case 'r': /* random sampling */
81	gwlarson	3.6	if (badarg(argc-i-1,argv+i+1,"f"))
82			goto userr;
83			randfrac = atof(argv[++i]);
84	gwlarson	3.5	break;
85			case 's': /* smooth sampling */
86	gwlarson	3.6	randfrac = -1.;
87	gwlarson	3.5	break;
88	gwlarson	3.1	case 'S': /* sequence start */
89			if (badarg(argc-i-1,argv+i+1,"i"))
90			goto userr;
91			seqstart = atoi(argv[++i]);
92			break;
93			case 'v': /* view file */
94	gwlarson	3.4	if (argv[i][2]!='f' \|\| badarg(argc-i-1,argv+i+1,"s"))
95	gwlarson	3.1	goto userr;
96			rval = viewfile(argv[++i], &myview, NULL);
97			if (rval < 0) {
98			sprintf(errmsg, "cannot open view file \"%s\"",
99			argv[i]);
100			error(SYSTEM, errmsg);
101			} else if (rval == 0) {
102			sprintf(errmsg, "bad view file \"%s\"",
103			argv[i]);
104			error(USER, errmsg);
105			}
106			break;
107			default:
108			goto userr;
109			}
110			}
111			/* open holodeck file */
112	gwlarson	3.3	if (i != argc-1)
113	gwlarson	3.1	goto userr;
114	gwlarson	3.3	hdkfile = argv[i];
115	gwlarson	3.1	initialize();
116			/* render picture(s) */
117			if (seqstart <= 0)
118			dopicture(0);
119			else
120			while (nextview(&myview, stdin) != EOF)
121			dopicture(seqstart++);
122			quit(0); /* all done! */
123			userr:
124			fprintf(stderr,
125	gwlarson	3.6	"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
126	gwlarson	3.1	progname);
127			quit(1);
128			}
129
130
131			dopicture(fn) /* render view from holodeck */
132			int fn;
133			{
134			char *err;
135			int rval;
136			BEAMLIST blist;
137
138			if ((err = setview(&myview)) != NULL) {
139			sprintf(errmsg, "%s -- skipping frame %d", err, fn);
140			error(WARNING, errmsg);
141			return;
142			}
143			startpicture(fn); /* open output picture */
144			/* determine relevant beams */
145			viewbeams(&myview, hres, vres, &blist);
146			/* render image */
147			if (blist.nb > 0) {
148			render_frame(blist.bl, blist.nb);
149	greg	3.8	free((void *)blist.bl);
150	gwlarson	3.1	} else {
151			sprintf(errmsg, "no section visible in frame %d", fn);
152			error(WARNING, errmsg);
153			}
154			rval = endpicture(); /* write pixel values */
155			if (rval < 0) {
156			sprintf(errmsg, "error writing frame %d", fn);
157			error(SYSTEM, errmsg);
158			}
159	gwlarson	3.3	#ifdef DEBUG
160	gwlarson	3.1	if (blist.nb > 0 & rval > 0) {
161	gwlarson	3.3	sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)",
162			rval, fn, 100.rval/(hresvres));
163	gwlarson	3.1	error(WARNING, errmsg);
164			}
165	gwlarson	3.3	#endif
166	gwlarson	3.1	}
167
168
169			render_frame(bl, nb) /* render frame from beam values */
170			register PACKHEAD *bl;
171			int nb;
172			{
173	greg	3.12	extern void pixBeam();
174	gwlarson	3.1	register HDBEAMI *bil;
175			register int i;
176
177			if (nb <= 0) return;
178			if ((bil = (HDBEAMI )malloc(nbsizeof(HDBEAMI))) == NULL)
179			error(SYSTEM, "out of memory in render_frame");
180			for (i = nb; i--; ) {
181			bil[i].h = hdlist[bl[i].hd];
182			bil[i].b = bl[i].bi;
183			}
184	gwlarson	3.2	hdloadbeams(bil, nb, pixBeam);
185	gwlarson	3.6	pixFinish(randfrac);
186	greg	3.8	free((void *)bil);
187	gwlarson	3.1	}
188
189
190			startpicture(fn) /* initialize picture for rendering & output */
191			int fn;
192			{
193			extern char VersionID[];
194			double pa = pixaspect;
195			char fname[256];
196			/* compute picture resolution */
197			hres = xres; vres = yres;
198			normaspect(viewaspect(&myview), &pa, &hres, &vres);
199			/* prepare output */
200			if (outspec != NULL) {
201			sprintf(fname, outspec, fn);
202			if (freopen(fname, "w", stdout) == NULL) {
203			sprintf(errmsg, "cannot open output \"%s\"", fname);
204			error(SYSTEM, errmsg);
205			}
206			}
207			/* write header */
208			newheader("RADIANCE", stdout);
209			printf("SOFTWARE= %s\n", VersionID);
210	gwlarson	3.7	printargs(gargc, gargv, stdout);
211	gwlarson	3.1	if (fn)
212			printf("FRAME=%d\n", fn);
213			fputs(VIEWSTR, stdout);
214			fprintview(&myview, stdout);
215			fputc('\n', stdout);
216	schorsch	3.14	if ((pa < 0.99) \| (pa > 1.01))
217	gwlarson	3.1	fputaspect(pa, stdout);
218	schorsch	3.14	if ((expval < 0.99) \| (expval > 1.01))
219	gwlarson	3.1	fputexpos(expval, stdout);
220			fputformat(COLRFMT, stdout);
221			fputc('\n', stdout);
222			/* write resolution (standard order) */
223			fprtresolu(hres, vres, stdout);
224			/* prepare image buffers */
225	schorsch	3.11	memset((char )mypixel, '\0', hresvres*sizeof(COLOR));
226			memset((char )myweight, '\0', hresvres*sizeof(float));
227			memset((char )mydepth, '\0', hresvres*sizeof(float));
228	gwlarson	3.1	}
229
230
231			int
232			endpicture() /* finish and write out pixels */
233			{
234	gwlarson	3.4	int lastr = -1, nunrend = 0;
235	greg	3.10	int32 lastp, lastrp;
236			register int32 p;
237	gwlarson	3.1	register double d;
238			/* compute final pixel values */
239			for (p = hres*vres; p--; ) {
240			if (myweight[p] <= FTINY) {
241	schorsch	3.13	if (lastr >= 0) {
242	gwlarson	3.4	if (p/hres == lastp/hres)
243			copycolor(mypixel[p], mypixel[lastp]);
244			else
245			copycolor(mypixel[p], mypixel[lastrp]);
246	schorsch	3.13	}
247	gwlarson	3.1	nunrend++;
248			continue;
249			}
250			d = expval/myweight[p];
251			scalecolor(mypixel[p], d);
252	gwlarson	3.4	if ((lastp=p)/hres != lastr)
253			lastr = (lastrp=p)/hres;
254	gwlarson	3.1	}
255			/* write each scanline */
256	gwlarson	3.4	for (p = vres; p--; )
257			if (fwritescan(mypixel+p*hres, hres, stdout) < 0)
258	gwlarson	3.1	return(-1);
259			if (fflush(stdout) == EOF)
260			return(-1);
261			return(nunrend);
262			}
263
264
265			initialize() /* initialize holodeck and buffers */
266			{
267			int fd;
268			FILE *fp;
269			int n;
270	greg	3.10	int32 nextloc;
271	gwlarson	3.1	/* open holodeck file */
272			if ((fp = fopen(hdkfile, "r")) == NULL) {
273			sprintf(errmsg, "cannot open \"%s\" for reading", hdkfile);
274			error(SYSTEM, errmsg);
275			}
276			/* check header format */
277			checkheader(fp, HOLOFMT, NULL);
278			/* check magic number */
279			if (getw(fp) != HOLOMAGIC) {
280			sprintf(errmsg, "bad magic number in holodeck file \"%s\"",
281			hdkfile);
282			error(USER, errmsg);
283			}
284			nextloc = ftell(fp); /* get stdio position */
285			fd = dup(fileno(fp)); /* dup file descriptor */
286			fclose(fp); /* done with stdio */
287			for (n = 0; nextloc > 0L; n++) { /* initialize each section */
288	greg	3.15	lseek(fd, (off_t)nextloc, SEEK_SET);
289	gwlarson	3.1	read(fd, (char *)&nextloc, sizeof(nextloc));
290			hdinit(fd, NULL);
291			}
292			/* allocate picture buffer */
293			mypixel = (COLOR )bmalloc(xresyres*sizeof(COLOR));
294			myweight = (float )bmalloc(xresyres*sizeof(float));
295	gwlarson	3.2	mydepth = (float )bmalloc(xresyres*sizeof(float));
296	schorsch	3.14	if ((mypixel == NULL) \| (myweight == NULL) \| (mydepth == NULL))
297	gwlarson	3.1	error(SYSTEM, "out of memory in initialize");
298			}
299
300
301	greg	3.8	void
302	gwlarson	3.1	eputs(s) /* put error message to stderr */
303			register char *s;
304			{
305			static int midline = 0;
306
307			if (!*s)
308			return;
309			if (!midline++) { /* prepend line with program name */
310			fputs(progname, stderr);
311			fputs(": ", stderr);
312			}
313			fputs(s, stderr);
314			if (s[strlen(s)-1] == '\n') {
315			fflush(stderr);
316			midline = 0;
317			}
318			}