# | Line 67 | Line 67 | extern CUBE thescene; /* the main scene */ | |
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67 | #define OT_EMPTY 0 | |
68 | #define OT_FULL 1 | |
69 | #define OT_TREE 2 | |
70 | + | /* return values for surface functions */ |
71 | + | #define O_MISS 0 /* no intersection */ |
72 | + | #define O_HIT 1 /* intersection */ |
73 | + | #define O_IN 2 /* cube contained entirely */ |
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