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Added the possibility to use custom unit factors. Similar to the
classic +to_meter parameter the conversion factor is related to meters,
i.e. the factor for conversion from kilometers meters is 1000. The
custom unit factors is given using the existing xy_in, xy_out, z_in and
z_out parameters, for example:
proj=unitconvert xy_in=4.5 +xy_out=mm
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Having non-const variables of static lifetime or even global scope is
usually a bad idea. These variables are inherently constants, and this
should be enforced.
This required marking some functions as not modifying input parameters
and marking some pointers as pointers to const.
One advantage is that the compiler usually puts const static variables
in a read-only code segment, so they can't be modified physically.
This can be verified with `nm` (on POSIX systems).
To avoid changes to the public API, functions returning non-const
pointers to data tables were left intact, but the returned data may not
be modified. Internally we prefer using the proj_list_* functions over
the pj_get_*_ref functions, because the former return const pointers.
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For sufficiently large values of modified julian date the
mjd_to_yyyymmdd function would integer overflow in the calculation of
the return value. This is fixed by implicit type conversion.
Credit to OSS-Fuzz.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4658 and
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4667
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Add time unit yyyymmdd to unitconvert operation
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Increase the focus on PJ_COORD as primary datatype: Eliminate use of PJ_TRIPLET etc.
Trim proj.h by removing material that has become unnecessary.
Improve constness
Make proj_factors work in proj.h space, by providing a trimmed down PJ_FACTORS (which even has more meaningful field names)
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* Removed remaining traces of the builtin selftest system. Moved all functionality to test/gie
* Updated Appveyor and Travis build scripts
* Another appveyor script update
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CONVERSIONS that are not PROJECTIONS
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PJ_OBS eliminated, API adjusted to reflect that we now have only one 4D data type.
2 new API functions added to determine output types of a PJ.
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Introduce a default destructor for PJ objects
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In most cases memory deallocation is completely removed from the
code since it can be handled by the default destructor. In a few
special cases a local destructor overrides the default destructor
and makes sure that locally allocated memored is cleaned up correctly.
Move all deallocation from pj_free to pj_default_destructor
Rename pj_latlong.c to fit with the conventional format PJ_latlong.c - freeup was missed here due to wrong naming
Clean up pj_init to avoid double deallocation; Also resolve #576 by adding z_0 and t_0 options in pj_init, while cleaning
Add a prototype for dealloc_params
Added missing errno.h include in pj_ctx.c
Temporarily removing ob_tran from testvarious, to be sure that is where the trouble is
Make PJ_ob_tran.c use proper initialization for the chained projection
proj=ob_tran: make it clear, that we disallow ellipsoidal projections, and, for improved backwards compatibility, turns off default settings, which could inject unwanted ellipsoid definitions
... then also remove the ellipsoid definition from the testvarious test case - which is probably buggy anyway
Work around cs2cs spherical init bug in testvarious; Forbid defs for ob_tran in pj_init
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3449. Credit to OSS Fuzz
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Fix for #566.
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3288. Credit to OSS Fuzz
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* obs_api revision and improvements: new namespace etc.
* Minor corrections: use unused functions, add missing prototype, added fwd/invcoord to PJ
* Minor correction: MSVC barfs on va_arg type specification. Trying once more with added parens
* Reverting paren correction, which appears to be a non-solution
* Significant improvements to the OBS_API, plus a number of corrections, mostly in test code, to reflect API changes
* Added two missing prototypes
* Adding the proj_transform function and some related checks
* Improvements to proj_transform etc. based on suggestions from Even Rouault
* Reducing the libc include footprint of proj.h - again based on suggestions from Even Rouault
* A few minor corrections
* Eliminate a MSVC warning about non-initialized usage. Not an actual issue, as another check has locked the path, but at least this should calm down MSVC
* Improved support for the errno reset/restore paradigm
* Introduced the internal header proj_internal.h; Moved most non-API stuff from pj_obs_api.c to pj_internal.c
* Adding proj_internal.h to HEADERS_LIBPROJ to solve build problems
* Correcting a few pj...proj blunders in PJ_pipeline.c
* Correcting a few additional blunders in PJ_pipeline.c
* Changed angle-brackets to quotation marks in includes of proj_internal.h
* Some minor build system repairs
* Some PJ_CONTEXT usage simplifications following suggestions by Kristian Evers @kbevers
* Added version numbering to proj.h - Fixes #529
* remove proj_errno_restore macro, provide function implementation
* Add proj_get_definition. Fixes #538
* Added library specific deallocator proj_buffer_free, eliminating a potential cross heap issues on Windows. Thx to Even Rouault for spotting this
* Got rid of a meaningless cast in proj_buffer_free
* Added some missing functions to proj.def (again spotted by @rouault); removed some not-yet-implemented material from proj.h
* Renamed proj_get_definition/proj_buffer_free to proj_definition_create/proj_definition_destroy, for symmetry and clarity
* Renaming the definition handlers to proj_definition_retrieve / proj_free
* Renaming proj_free to proj_release
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A pseudo-projection that can be used to convert units of input and
output data. Primarily useful in pipelines.
Unit conversion is performed by means of a pivot unit. The pivot unit
for distance units are the meter and for time we use the modified julian
date. A time unit conversion is performed like
Unit A -> Modified Julian date -> Unit B
distance units are converted in the same manner, with meter being the
central unit.
The modified Julian date is chosen as the pivout unit since it has a
fairly high precision, goes sufficiently long backwards in time, has no
danger of hitting the upper limit in the near future and it is a fairly
common time unit in astronomy and geodesy. Note that we are using the
Julian date and not day. The difference being that the latter is defined
as an integer and is thus limited to days in resolution. This approach
has been extended wherever it makes sense, e.g. the GPS week unit also
has a fractional part that makes it possible to determine the day, hour
and minute of an observation.
In- and output units are controlled with the parameters
+xy_in, +xy_out, +z_in, +z_out, +t_in and +t_out
where xy denotes horizontal units, z vertical units and t time units.
Distance units are converted similar to what is already in use in PROJ.4.
To ease usage of the already defined conversion factors a new column
with the factors defined as doubles has been added to the pj_units array.
This simplifies the code significantly, since parsing the defined strings
can be avoided.
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