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expose a get_pixel method on mapnik::grid (for testing purposes)

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This commit is contained in:
Dane Springmeyer 2012-06-06 16:34:45 -07:00
parent 76211243a4
commit c29c18e8df
1 changed files with 13 additions and 0 deletions
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13
bindings/python/mapnik_grid.cpp
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@ -39,6 +39,18 @@ bool painted(mapnik::grid const& grid)
return grid.painted(); return grid.painted();
} }
int get_pixel(mapnik::grid const& grid, int x, int y)
{
if (x < grid.width() && y < grid.height())
{
mapnik::grid::value_type const * row = grid.getRow(y);
mapnik::grid::value_type const pixel = row[x];
return pixel;
}
PyErr_SetString(PyExc_IndexError, "invalid x,y for grid dimensions");
boost::python::throw_error_already_set();
}
void export_grid() void export_grid()
{ {
class_<mapnik::grid,boost::shared_ptr<mapnik::grid> >( class_<mapnik::grid,boost::shared_ptr<mapnik::grid> >(
@ -52,6 +64,7 @@ void export_grid()
.def("width",&mapnik::grid::width) .def("width",&mapnik::grid::width)
.def("height",&mapnik::grid::height) .def("height",&mapnik::grid::height)
.def("view",&mapnik::grid::get_view) .def("view",&mapnik::grid::get_view)
.def("get_pixel",&get_pixel)
.def("encode",encode, .def("encode",encode,
( boost::python::arg("encoding")="utf", boost::python::arg("features")=true,boost::python::arg("resolution")=4 ), ( boost::python::arg("encoding")="utf", boost::python::arg("features")=true,boost::python::arg("resolution")=4 ),
"Encode the grid as as optimized json\n" "Encode the grid as as optimized json\n"