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from ctypes import c_char_p, c_int, c_size_t, c_ubyte, c_uint, POINTER
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from django.contrib.gis.geos.libgeos import lgeos, CS_PTR, GEOM_PTR, PREPGEOM_PTR, GEOS_PREPARE
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from django.contrib.gis.geos.libgeos import CS_PTR, GEOM_PTR, PREPGEOM_PTR, GEOS_PREPARE
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from django.contrib.gis.geos.prototypes.errcheck import \
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check_geom, check_minus_one, check_sized_string, check_string, check_zero
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from django.contrib.gis.geos.prototypes.threadsafe import GEOSFunc
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# This is the return type used by binary output (WKB, HEX) routines.
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c_uchar_p = POINTER(c_ubyte)
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### ctypes prototypes ###
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# Deprecated creation routines from WKB, HEX, WKT
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from_hex = bin_constructor(lgeos.GEOSGeomFromHEX_buf)
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from_wkb = bin_constructor(lgeos.GEOSGeomFromWKB_buf)
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from_wkt = geom_output(lgeos.GEOSGeomFromWKT, [c_char_p])
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from_hex = bin_constructor(GEOSFunc('GEOSGeomFromHEX_buf'))
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from_wkb = bin_constructor(GEOSFunc('GEOSGeomFromWKB_buf'))
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from_wkt = geom_output(GEOSFunc('GEOSGeomFromWKT'), [c_char_p])
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to_hex = bin_output(lgeos.GEOSGeomToHEX_buf)
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to_wkb = bin_output(lgeos.GEOSGeomToWKB_buf)
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to_wkt = string_from_geom(lgeos.GEOSGeomToWKT)
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# Deprecated output routines
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to_hex = bin_output(GEOSFunc('GEOSGeomToHEX_buf'))
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to_wkb = bin_output(GEOSFunc('GEOSGeomToWKB_buf'))
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to_wkt = string_from_geom(GEOSFunc('GEOSGeomToWKT'))
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# The GEOS geometry type, typeid, num_coordites and number of geometries
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geos_normalize = int_from_geom(lgeos.GEOSNormalize)
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geos_type = string_from_geom(lgeos.GEOSGeomType)
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geos_typeid = int_from_geom(lgeos.GEOSGeomTypeId)
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get_dims = int_from_geom(lgeos.GEOSGeom_getDimensions, zero=True)
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get_num_coords = int_from_geom(lgeos.GEOSGetNumCoordinates)
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get_num_geoms = int_from_geom(lgeos.GEOSGetNumGeometries)
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geos_normalize = int_from_geom(GEOSFunc('GEOSNormalize'))
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geos_type = string_from_geom(GEOSFunc('GEOSGeomType'))
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geos_typeid = int_from_geom(GEOSFunc('GEOSGeomTypeId'))
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get_dims = int_from_geom(GEOSFunc('GEOSGeom_getDimensions'), zero=True)
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get_num_coords = int_from_geom(GEOSFunc('GEOSGetNumCoordinates'))
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get_num_geoms = int_from_geom(GEOSFunc('GEOSGetNumGeometries'))
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# Geometry creation factories
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create_point = geom_output(lgeos.GEOSGeom_createPoint, [CS_PTR])
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create_linestring = geom_output(lgeos.GEOSGeom_createLineString, [CS_PTR])
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create_linearring = geom_output(lgeos.GEOSGeom_createLinearRing, [CS_PTR])
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create_point = geom_output(GEOSFunc('GEOSGeom_createPoint'), [CS_PTR])
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create_linestring = geom_output(GEOSFunc('GEOSGeom_createLineString'), [CS_PTR])
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create_linearring = geom_output(GEOSFunc('GEOSGeom_createLinearRing'), [CS_PTR])
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# Polygon and collection creation routines are special and will not
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# have their argument types defined.
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create_polygon = geom_output(lgeos.GEOSGeom_createPolygon, None)
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create_collection = geom_output(lgeos.GEOSGeom_createCollection, None)
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create_polygon = geom_output(GEOSFunc('GEOSGeom_createPolygon'), None)
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create_collection = geom_output(GEOSFunc('GEOSGeom_createCollection'), None)
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get_extring = geom_output(lgeos.GEOSGetExteriorRing, [GEOM_PTR])
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get_intring = geom_index(lgeos.GEOSGetInteriorRingN)
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get_nrings = int_from_geom(lgeos.GEOSGetNumInteriorRings)
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get_extring = geom_output(GEOSFunc('GEOSGetExteriorRing'), [GEOM_PTR])
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get_intring = geom_index(GEOSFunc('GEOSGetInteriorRingN'))
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get_nrings = int_from_geom(GEOSFunc('GEOSGetNumInteriorRings'))
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# Collection Routines
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get_geomn = geom_index(lgeos.GEOSGetGeometryN)
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get_geomn = geom_index(GEOSFunc('GEOSGetGeometryN'))
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geom_clone = lgeos.GEOSGeom_clone
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geom_clone = GEOSFunc('GEOSGeom_clone')
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geom_clone.argtypes = [GEOM_PTR]
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geom_clone.restype = GEOM_PTR
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# Destruction routine.
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destroy_geom = lgeos.GEOSGeom_destroy
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destroy_geom = GEOSFunc('GEOSGeom_destroy')
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destroy_geom.argtypes = [GEOM_PTR]
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destroy_geom.restype = None
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geos_get_srid = lgeos.GEOSGetSRID
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geos_get_srid = GEOSFunc('GEOSGetSRID')
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geos_get_srid.argtypes = [GEOM_PTR]
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geos_get_srid.restype = c_int
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geos_set_srid = lgeos.GEOSSetSRID
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geos_set_srid = GEOSFunc('GEOSSetSRID')
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geos_set_srid.argtypes = [GEOM_PTR, c_int]
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geos_set_srid.restype = None