ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

root/Development/ray/src/rt/rview.c

Comparing ray/src/rt/rview.c (file contents):
Revision 1.13 by greg, Fri May 3 15:43:32 1991 UTC vs.
Revision 1.15 by greg, Tue May 21 17:41:32 1991 UTC

#	Line 10 | Line 10 | static char SCCSid[] = "$SunId$ LBL";
10		*     3/24/87
11		*/
12
13	<	#include  "standard.h"
13	>	#include  "ray.h"
14
15	–	#include  "color.h"
16	–
15		#include  "rpaint.h"
16
17		#include  <signal.h>
18
21	–	#include  <setjmp.h>
22	–
19		#include  <ctype.h>
20
21		VIEW  ourview = STDVIEW;                /* viewing parameters */
22		int  hresolu, vresolu;                  /* image resolution */
23
24	+	int  dimlist[MAXDIM];                   /* sampling dimensions */
25	+	int  ndims = 0;                         /* number of sampling dimensions */
26	+	int  samplendx = 0;                     /* index for this sample */
27	+
28		int  psample = 8;                       /* pixel sample size */
29		double  maxdiff = .15;                  /* max. sample difference */
30
#	Line 57 | Line 57 | PNODE  ptrunk;                         /* the base of our image */
57		RECT  pframe;                           /* current frame boundaries */
58		int  pdepth;                            /* image depth in current frame */
59
60	–	static jmp_buf  mainloop;               /* longjmp back to main loop */
60		static char  *reserve_mem = NULL;       /* pre-allocated reserve memory */
61
62		#define RESERVE_AMT     8192            /* amount of memory to reserve */
#	Line 119 | Line 118 | rview()                                /* do a view */
118		char  buf[32];
119
120		devopen(devname);               /* open device */
121	<	newimage();                     /* set up image */
122	<	setjmp(mainloop);
121	>	newimage();                     /* start image (calls fillreserves) */
122	>
123		for ( ; ; ) {                   /* quit in command() */
124	<	while (hresolu <= 1<<pdepth &&
126	<	vresolu <= 1<<pdepth)
124	>	while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth)
125		command("done: ");
126	<
127	<	if (hresolu <= psample<<pdepth &&
128	<	vresolu <= psample<<pdepth) {
126	>	while (reserve_mem == NULL)
127	>	command("out of memory: ");
128	>	errno = 0;
129	>	if (hresolu <= psample<<pdepth && vresolu <= psample<<pdepth) {
130		sprintf(buf, "%d sampling...\n", 1<<pdepth);
131		(*dev->comout)(buf);
132		rsample();
#	Line 136 | Line 135 | rview()                                /* do a view */
135		(*dev->comout)(buf);
136		refine(&ptrunk, 0, 0, hresolu, vresolu, pdepth+1);
137		}
138	<	if (dev->inpready)
138	>	if (errno == ENOMEM)            /* ran out of memory */
139	>	freereserves();
140	>	else if (dev->inpready)         /* noticed some input */
141		command(": ");
142	<	else
142	>	else                            /* finished this depth */
143		pdepth++;
144		}
145		}
146
147
148	<	memreserve()                    /* fill memory reserves */
148	>	fillreserves()                  /* fill memory reserves */
149		{
150		if (reserve_mem != NULL)
151	<	return;                 /* got some already */
151	>	return;
152		reserve_mem = malloc(RESERVE_AMT);
153		}
154
155
156	<	memerror(detail)                /* try and rescue a memory error */
156	<	char    *detail;
156	>	freereserves()                  /* free memory reserves */
157		{
158	<	if (reserve_mem == NULL) {
159	<	sprintf(errmsg, "out of memory %s", detail);
160	<	error(SYSTEM, errmsg);
161	<	}
158	>	if (reserve_mem == NULL)
159	>	return;
160		free(reserve_mem);
161		reserve_mem = NULL;
164	–	do
165	–	command("out of memory: ");
166	–	while (reserve_mem == NULL);
167	–	longjmp(mainloop, 1);
162		}
163
164
#	Line 300 | Line 294 | rsample()                      /* sample the image */
294		ysiz = (((pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu;
295		rl = (RECT *)malloc(xsiz*sizeof(RECT));
296		if (rl == NULL)
297	<	memerror("in rsample");
297	>	return;
298		pl = (PNODE **)malloc(xsiz*sizeof(PNODE *));
299		if (pl == NULL)
300	<	memerror("in rsample");
300	>	return;
301		/*
302		* Initialize the bottom row.
303		*/
#	Line 390 | Line 384 | int  pd;
384		if (p->kid == NULL) {                   /* subdivide */
385
386		if ((p->kid = newptree()) == NULL)
387	<	memerror("in refine");
387	>	return(growth);
388		/*
389		*  The following paint order can leave a black pixel
390		*  when redraw() is called in (*dev->paintr)().

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines (old)
>	Changed lines (new)