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cdef extern from "region.h":
ctypedef enum region_type "RegionType":
EMTPY
SPECIAL
RECTANGEL
POLYGON
MASK
ctypedef struct region_bounds:
float top
float bottom
float left
float right
ctypedef struct region_rectangle:
float x
float y
float width
float height
# ctypedef struct region_mask:
# int x
# int y
# int width
# int height
# char *data
ctypedef struct region_polygon:
int count
float *x
float *y
ctypedef union region_container_data:
region_rectangle rectangle
region_polygon polygon
# region_mask mask
int special
ctypedef struct region_container:
region_type type
region_container_data data
# ctypedef struct region_overlap:
# float overlap
# float only1
# float only2
# region_overlap region_compute_overlap(const region_container* ra, const region_container* rb, region_bounds bounds)
float compute_polygon_overlap(const region_polygon* p1, const region_polygon* p2, float *only1, float *only2, region_bounds bounds)
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