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root/Development/ray/src/rt/rv3.c
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Comparing ray/src/rt/rv3.c (file contents):
Revision 1.12 by greg, Fri Jan 19 00:00:31 1990 UTC vs.
Revision 1.15 by greg, Thu Mar 8 10:28:29 1990 UTC

# Line 18 | Line 18 | static char SCCSid[] = "$SunId$ LBL";
18  
19   #include  "random.h"
20  
21 + #ifndef WFLUSH
22 + #define WFLUSH          30              /* flush after this many rays */
23 + #endif
24  
25 +
26   getrect(s, r)                           /* get a box */
27   char  *s;
28   register RECT  *r;
# Line 130 | Line 134 | paint(p, xmin, ymin, xmax, ymax)       /* compute and paint
134   register PNODE  *p;
135   int  xmin, ymin, xmax, ymax;
136   {
137 +        extern long  nrays;
138 +        static long  lastflush = 0;
139          static RAY  thisray;
140          double  h, v;
141          register int  i;
# Line 141 | Line 147 | int  xmin, ymin, xmax, ymax;
147                  return;
148          }
149                                                  /* jitter ray direction */
150 <        p->x = h = xmin + (xmax-xmin)*frandom();
151 <        h /= hresolu;
146 <        p->y = v = ymin + (ymax-ymin)*frandom();
147 <        v /= vresolu;
150 >        h = xmin + (xmax-xmin)*frandom();
151 >        v = ymin + (ymax-ymin)*frandom();
152          
153 <        viewray(thisray.rorg, thisray.rdir, &ourview, h, v);
150 <
153 >        viewray(thisray.rorg, thisray.rdir, &ourview, h/hresolu, v/vresolu);
154          rayorigin(&thisray, NULL, PRIMARY, 1.0);
152 –        
155          rayvalue(&thisray);
156  
157 +        p->x = h;
158 +        p->y = v;
159          copycolor(p->v, thisray.rcol);
156 –
160          scalecolor(p->v, exposure);
161  
162          (*dev->paintr)(greyscale?greyof(p->v):p->v, xmin, ymin, xmax, ymax);
163 +
164 +        if (dev->flush != NULL && nrays - lastflush >= WFLUSH) {
165 +                lastflush = nrays;
166 +                (*dev->flush)();
167 +        }
168   }
169  
170  
# Line 349 | Line 357 | register VIEW  *vp;
357          } else if (bcmp((char *)vp, (char *)&ourview, sizeof(VIEW))) {
358                  copystruct(&oldview, &ourview);
359                  copystruct(&ourview, vp);
360 <                newimage();             /* newimage() calls with vp=&ourview! */
360 >                newimage();
361          }
362   }
363  

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