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- /*
- * overlap.h - Test for overlaps
- *
- * Written 2009, 2010 by Werner Almesberger
- * Copyright 2009, 2010 by Werner Almesberger
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
- #ifndef OVERLAP_H
- #define OVERLAP_H
- enum allow_overlap {
- ao_none,
- ao_touch,
- ao_any,
- };
- /*
- * Avoid inst.h -> layer.h -> overlay.h -> inst.h loop
- */
- struct inst;
- /*
- * "inside" returns 1 if "a" is completely enclosed by "b". If "a" == "b",
- * that also counts as "a" being inside "b".
- */
- int inside(const struct inst *a, const struct inst *b);
- /*
- * "overlap" returns 1 if "a" and "b" have at least one point in common.
- */
- int overlap(const struct inst *a, const struct inst *b,
- enum allow_overlap allow);
- #endif /* !OVERLAP_H */
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