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+add pickle support to projection class - see #345

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This commit is contained in:
Dane Springmeyer 2009-05-24 06:02:33 +00:00
parent 8b854a1bb2
commit def1c709ce
1 changed files with 14 additions and 2 deletions
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16
bindings/python/mapnik_projection.cpp
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@ -25,6 +25,18 @@
#include <mapnik/coord.hpp>
#include <mapnik/projection.hpp>
using mapnik::projection;
struct projection_pickle_suite : boost::python::pickle_suite
{
static boost::python::tuple
getinitargs(const projection& p)
{
using namespace boost::python;
return boost::python::make_tuple(p.params());
}
};
namespace {
mapnik::coord2d forward_pt(mapnik::coord2d const& pt,
mapnik::projection const& prj)
@ -73,9 +85,9 @@ namespace {
void export_projection ()
{
using namespace boost::python;
using mapnik::projection;
class_<projection>("Projection", init<optional<std::string const&> >())
.def_pickle(projection_pickle_suite())
.def ("params", make_function(&projection::params,
return_value_policy<copy_const_reference>()))
.add_property ("geographic",&projection::is_geographic)