| 15 |  | #include  "octree.h" | 
| 16 |  |  | 
| 17 |  | OCTREE  *octblock[MAXOBLK];             /* our octree */ | 
| 18 | < | static OCTREE  ofreelist = EMPTY;       /* free octree nodes */ | 
| 18 | > | static OCTREE  ofreelist = EMPTY;       /* freed octree nodes */ | 
| 19 |  | static OCTREE  treetop = 0;             /* next free node */ | 
| 20 |  |  | 
| 21 |  |  | 
| 69 |  | for (i = 1; i < 8; i++) | 
| 70 |  | if ((octkid(ot, i) = combine(octkid(ot, i))) != ores) | 
| 71 |  | ores = ot; | 
| 72 | < | if (!istree(ores))      /* all were identical leaves */ | 
| 73 | < | octfree(ot); | 
| 72 | > | if (!istree(ores)) {    /* all were identical leaves */ | 
| 73 | > | octkid(ot, 0) = ofreelist; | 
| 74 | > | ofreelist = ot; | 
| 75 | > | } | 
| 76 |  | return(ores); | 
| 77 |  | } | 
| 78 |  |  |