diff options
Diffstat (limited to 'docs/source/development')
| -rw-r--r-- | docs/source/development/reference/datatypes.rst | 7 | ||||
| -rw-r--r-- | docs/source/development/reference/functions.rst | 49 |
2 files changed, 49 insertions, 7 deletions
diff --git a/docs/source/development/reference/datatypes.rst b/docs/source/development/reference/datatypes.rst index 25e7ffd2..18bd7efd 100644 --- a/docs/source/development/reference/datatypes.rst +++ b/docs/source/development/reference/datatypes.rst @@ -60,11 +60,12 @@ Transformation objects .. c:type:: PJ_AREA + .. versionadded:: 6.0.0 + Opaque object describing an area in which a transformation is performed. - .. note:: This object is not fully implemented yet. It is to be used with - :c:func:`proj_create_crs_to_crs` to select the best transformation - between the two input coordinate reference systems. + It is used with :c:func:`proj_create_crs_to_crs` to select the best transformation + between the two input coordinate reference systems. 2 dimensional coordinates -------------------------------------------------------------------------------- diff --git a/docs/source/development/reference/functions.rst b/docs/source/development/reference/functions.rst index aa548664..87271117 100644 --- a/docs/source/development/reference/functions.rst +++ b/docs/source/development/reference/functions.rst @@ -127,10 +127,10 @@ paragraph for more details. The returned :c:type:`PJ`-pointer should be deallocated with :c:func:`proj_destroy`. :param PJ_CONTEXT* ctx: Threading context. - :param `srid_from`: Source SRID. - :type `srid_from`: const char* - :param `srid_to`: Destination SRID. - :type `srid_to`: const char* + :param `source_crs`: Source CRS. + :type `source_crs`: const char* + :param `target_crs`: Destination SRS. + :type `target_crs`: const char* :param `area`: Descriptor of the desired area for the transformation. :type `area`: PJ_AREA :returns: :c:type:`PJ*` @@ -142,6 +142,45 @@ paragraph for more details. :param PJ* P: :returns: :c:type:`PJ*` +Area of interest +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + +.. versionadded:: 6.0.0 + + +.. c:function:: PJ_AREA* proj_area_create(void) + + Create an area of use. + + Such an area of use is to be passed to :c:func:`proj_create_crs_to_crs` to + specify the area of use for the choice of relevant coordinate operations. + + :returns: :c:type:`PJ_AREA*` to be deallocated with :c:func:`proj_area_destroy` + + +.. c:function:: void proj_area_set_bbox(PJ_AREA *area, double west_lon_degree, double south_lat_degree, double east_lon_degree, double north_lat_degree) + + Set the bounding box of the area of use + + Such an area of use is to be passed to :c:func:`proj_create_crs_to_crs` to + specify the area of use for the choice of relevant coordinate operations. + + In the case of an area of use crossing the antimeridian (longitude +/- 180 degrees), + `west_lon_degree` will be greater than `east_lon_degree`. + + :param `area`: Pointer to an object returned by :c:func:`proj_area_create`. + :param `west_lon_degree`: West longitude, in degrees. In [-180,180] range. + :param `south_lat_degree`: South latitude, in degrees. In [-90,90] range. + :param `east_lon_degree`: East longitude, in degrees. In [-180,180] range. + :param `north_lat_degree`: North latitude, in degrees. In [-90,90] range. + +.. c:function:: void proj_area_destroy(PJ_AREA* area) + + Deallocate a :c:type:`PJ_AREA` object. + + :param PJ_AREA* area + + .. _coord_trans_functions: Coordinate transformation @@ -604,6 +643,8 @@ Various C API for ISO-19111 functionality +++++++++++++++++++++++++++++++++ +.. versionadded:: 6.0.0 + The PJ* objects returned by :c:func:`proj_create_from_wkt`, :c:func:`proj_create_from_database` and other functions in that section will have generally minimal interaction with the functions declared in the |