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- #ifndef REGION_H
- #define REGION_H
- typedef struct Region Region;
- typedef struct RegData RegData;
- struct RegData {
- int size; /* # of rects it can hold */
- int nrects; /* # used */
- Rectangle * rects;
- };
- struct Region {
- Rectangle extents; /* the bounding box */
- RegData;
- };
- #define REGION_EMPTY(reg) ((reg)->nrects == 0)
- extern void region_init(Region *);
- extern void region_union(Region *, Rectangle, Rectangle);
- extern void region_reset(Region *);
- extern void region_copy(Region *, Region *);
- #endif /* !REGION_H */
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