CONST_BasePath is split into separate configuration variables
for binaries, libraries and data. These variables as well as
the installation path are now set in the executable directly and
no longer configurable via project settings.
This is the first step towards an installable software. The
executables should know per installation where to find their
necessary data to execute. Project configuration needs to be
restricted to settings that really concern the specific Nominatim
installation.
There are two places where the website URL is still used:
for icons, replace the URL with a link to the icon repository
of the UI repo. The more URL now builds the link from the
server info.
Just make cmake install a small stub that includes
the settings from the build directory and then the
script from the source directory. Remove executable
rights from php files in utils/ so that they cannot
be accidentally executed.
These functions take care of type conversion and check that
the parameters contain legal values. The API now returns a
Bad Request error if the format is wrong.
Executables (including websites) need to be installed in the
build directory, so that they can find the right settings.php.
settings now defines build and source dir.
Don't run the simplification function if no threshold was given
(or in case of a negative one). Also process the query string
parameter in case of html out format.
New query string parameter polygon_threshold=<0.0..1> is introduced.
The float value of this parameter (defaults to 0) is passed to
ST_SimplifyPreserveTopology() on geometry we're about to output in
one (or many) requested formats such as GeoJSON, KML, etc.
This is useful when getting border polygons for whole countries, but
rendering them at large scale, when most of the high resolution details
cannot be seen anyway. For example, the unsimplified polygon data for
Germany in GeoJSON format currently makes for about 3 MB response body.
With use of this new parameter, the application can greatly reduce the
amount of downloaded data and server response time while providing its
users with the same picture. On a typical laptop screen resolution,
zooming out to fit the whole country borders on screen, only 1/100 amount
of details could be well enough.
