44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// mapnik
|
|
#include <mapnik/simplify.hpp>
|
|
|
|
#include <mapnik/warning.hpp>
|
|
MAPNIK_DISABLE_WARNING_PUSH
|
|
#include <mapnik/warning_ignore.hpp>
|
|
#include <boost/assign/list_of.hpp>
|
|
#include <boost/bimap.hpp>
|
|
MAPNIK_DISABLE_WARNING_POP
|
|
|
|
namespace mapnik
|
|
{
|
|
|
|
using simplify_algorithm_lookup_type = boost::bimap<simplify_algorithm_e, std::string>;
|
|
static const simplify_algorithm_lookup_type simplify_lookup = boost::assign::list_of<simplify_algorithm_lookup_type::relation>
|
|
(radial_distance,"radial-distance")
|
|
(douglas_peucker,"douglas-peucker")
|
|
(visvalingam_whyatt,"visvalingam-whyatt")
|
|
(zhao_saalfeld,"zhao-saalfeld")
|
|
;
|
|
|
|
boost::optional<simplify_algorithm_e> simplify_algorithm_from_string(std::string const& name)
|
|
{
|
|
boost::optional<simplify_algorithm_e> algo;
|
|
simplify_algorithm_lookup_type::right_const_iterator right_iter = simplify_lookup.right.find(name);
|
|
if (right_iter != simplify_lookup.right.end())
|
|
{
|
|
algo.reset(right_iter->second);
|
|
}
|
|
return algo;
|
|
}
|
|
|
|
boost::optional<std::string> simplify_algorithm_to_string(simplify_algorithm_e value)
|
|
{
|
|
boost::optional<std::string> algo;
|
|
simplify_algorithm_lookup_type::left_const_iterator left_iter = simplify_lookup.left.find(value);
|
|
if (left_iter != simplify_lookup.left.end())
|
|
{
|
|
algo.reset(left_iter->second);
|
|
}
|
|
return algo;
|
|
}
|
|
|
|
}
|