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root/radiance/src/common/octree.c
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Comparing src/common/octree.c (file contents):
Revision 2.1 by greg, Tue Nov 12 16:55:14 1991 UTC vs.
Revision 2.8 by greg, Sun Nov 1 04:41:55 2009 UTC

# Line 1 | Line 1
1 – /* Copyright (c) 1986 Regents of the University of California */
2 –
1   #ifndef lint
2 < static char SCCSid[] = "$SunId$ LBL";
2 > static const char       RCSid[] = "$Id$";
3   #endif
6 –
4   /*
5   *  octree.c - routines dealing with octrees and cubes.
9 – *
10 – *     7/28/85
6   */
7  
8 + #include "copyright.h"
9 +
10   #include  "standard.h"
11  
12   #include  "octree.h"
# Line 22 | Line 19 | static OCTREE  treetop = 0;            /* next free node */
19   OCTREE
20   octalloc()                      /* allocate an octree */
21   {
22 <        register OCTREE  freet;
22 >        OCTREE  freet;
23  
24          if ((freet = ofreelist) != EMPTY) {
25                  ofreelist = octkid(freet, 0);
# Line 33 | Line 30 | octalloc()                     /* allocate an octree */
30                  errno = 0;
31                  if (octbi(freet) >= MAXOBLK)
32                          return(EMPTY);
33 <                if ((octblock[octbi(freet)] = (OCTREE *)bmalloc(
34 <                                (unsigned)256*8*sizeof(OCTREE))) == NULL)
33 >                if ((octblock[octbi(freet)] = (OCTREE *)malloc(
34 >                                (unsigned)OCTBLKSIZ*8*sizeof(OCTREE))) == NULL)
35                          return(EMPTY);
36          }
37 <        treetop += 8;
37 >        treetop++;
38          return(freet);
39   }
40  
41  
42 + void
43   octfree(ot)                     /* free an octree */
44 < register OCTREE  ot;
44 > OCTREE  ot;
45   {
46 <        register int  i;
46 >        int  i;
47  
48          if (!istree(ot))
49                  return;
# Line 56 | Line 54 | register OCTREE  ot;
54   }
55  
56  
57 + void
58 + octdone()                       /* free EVERYTHING */
59 + {
60 +        int     i;
61 +
62 +        for (i = 0; i < MAXOBLK; i++) {
63 +                if (octblock[i] == NULL)
64 +                        break;
65 +                free((void *)octblock[i]);
66 +                octblock[i] = NULL;
67 +        }
68 +        ofreelist = EMPTY;
69 +        treetop = 0;
70 + }
71 +
72 +
73   OCTREE
74   combine(ot)                     /* recursively combine nodes */
75 < register OCTREE  ot;
75 > OCTREE  ot;
76   {
77 <        register int  i;
78 <        register OCTREE  ores;
77 >        int  i;
78 >        OCTREE  ores;
79  
80          if (!istree(ot))        /* not a tree */
81                  return(ot);
# Line 77 | Line 91 | register OCTREE  ot;
91   }
92  
93  
94 + void
95   culocate(cu, pt)                /* locate point within cube */
96 < register CUBE  *cu;
97 < register FVECT  pt;
96 > CUBE  *cu;
97 > FVECT  pt;
98   {
99 <        register int  i;
99 >        int  i;
100          int  branch;
101  
102          while (istree(cu->cutree)) {
# Line 97 | Line 112 | register FVECT  pt;
112   }
113  
114  
115 < cucopy(cu1, cu2)                /* copy cu2 into cu1 */
101 < register CUBE  *cu1, *cu2;
102 < {
103 <        cu1->cutree = cu2->cutree;
104 <        cu1->cusize = cu2->cusize;
105 <        VCOPY(cu1->cuorg, cu2->cuorg);
106 < }
107 <
108 <
115 > int
116   incube(cu, pt)                  /* determine if a point is inside a cube */
117 < register CUBE  *cu;
118 < register FVECT  pt;
117 > CUBE  *cu;
118 > FVECT  pt;
119   {
120          if (cu->cuorg[0] > pt[0] || pt[0] >= cu->cuorg[0] + cu->cusize)
121                  return(0);

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