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ENH: Use proj_create_crs_to_crs_from_pj for creating transformer PJ* #800

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ENH: Use proj_create_crs_to_crs_from_pj for creating transformer PJ* #800

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1 change: 1 addition & 0 deletions pyproj/_crs.pxd
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Original file line number Diff line number Diff line change
Expand Up @@ -131,3 +131,4 @@ cdef class _CRS(Base):
cdef readonly object _geodetic_crs
cdef readonly object _coordinate_system
cdef readonly object _coordinate_operation
cdef PJ* get_projobj(self)
3 changes: 3 additions & 0 deletions pyproj/_crs.pyx
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Expand Up @@ -2334,6 +2334,9 @@ cdef class _CRS(Base):
self._set_base_info()
CRSError.clear()

cdef PJ* get_projobj(self):
return self.projobj

@property
def axis_info(self):
"""
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7 changes: 4 additions & 3 deletions pyproj/_transformer.pyx
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Expand Up @@ -366,11 +366,12 @@ cdef class _Transformer(Base):
north_lat_degree,
)
transformer.context = pyproj_context_create()
transformer.projobj = proj_create_crs_to_crs(
transformer.projobj = proj_create_crs_to_crs_from_pj(
transformer.context,
cstrencode(crs_from.srs),
cstrencode(crs_to.srs),
crs_from.get_projobj(),
crs_to.get_projobj(),
pj_area_of_interest,
NULL,
)
finally:
if pj_area_of_interest != NULL:
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8 changes: 7 additions & 1 deletion pyproj/proj.pxi
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Expand Up @@ -130,7 +130,13 @@ cdef extern from "proj.h":
double *t, size_t st, size_t nt
) nogil
ctypedef struct PJ_AREA
PJ *proj_create_crs_to_crs(PJ_CONTEXT *ctx, const char *source_crs, const char *target_crs, PJ_AREA *area)
PJ *proj_create_crs_to_crs_from_pj(
PJ_CONTEXT *ctx,
PJ *source_crs,
PJ *target_crs,
PJ_AREA *area,
const char* const *options,
)

ctypedef enum PJ_COMPARISON_CRITERION:
PJ_COMP_STRICT
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