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31#define LARGE_DISTANCE 100000
32#define MIN_BLOB_SIZE 10
33#define MAX_ASPECT_RATIO 2.5
44#define same_point(p1, p2) \
45 ((abs(p1.x - p2.x) < chop_same_distance) && (abs(p1.y - p2.y) < chop_same_distance))
54#define dist_square(p1, p2) ((p2.x - p1.x) * (p2.x - p1.x) + (p2.y - p1.y) * (p2.y - p1.y))
63#define closest(test_p, p1, p2) \
64 (p1 ? (p2 ? ((dist_square(test_p->pos, p1->pos) < dist_square(test_p->pos, p2->pos)) ? p1 : p2) \
74#define edgept_dist(p1, p2) (dist_square((p1)->pos, (p2)->pos))
83#define is_exterior_point(edge, point) \
84 (same_point(edge->prev->pos, point->pos) || same_point(edge->next->pos, point->pos) || \
85 (angle_change(edge->prev, edge, edge->next) - angle_change(edge->prev, edge, point) > 20))
93#define is_equal(p1, p2) (((p1).x == (p2).x) && ((p1).y == (p2).y))
103#define is_on_line(p, p0, p1) \
104 (within_range((p).x, (p0).x, (p1).x) && within_range((p).y, (p0).y, (p1).y))
113#define within_range(x, x0, x1) (((x0 <= x) && (x <= x1)) || ((x1 <= x) && (x <= x0)))