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find text interior placement after reprojection

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This commit is contained in:
Jiri Drbalek 2017-10-08 14:32:14 +00:00
parent 43d7278352
commit e243e16fd9
1 changed files with 21 additions and 4 deletions
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25
src/text/symbolizer_helpers.cpp
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@ -40,6 +40,10 @@
#include <mapnik/text/placement_finder_impl.hpp> #include <mapnik/text/placement_finder_impl.hpp>
#include <mapnik/text/placements/base.hpp> #include <mapnik/text/placements/base.hpp>
#include <mapnik/text/placements/dummy.hpp> #include <mapnik/text/placements/dummy.hpp>
#include <mapnik/geometry/transform.hpp>
#include <mapnik/geometry/strategy.hpp>
#include <mapnik/proj_strategy.hpp>
#include <mapnik/view_strategy.hpp>
namespace mapnik { namespace mapnik {
namespace geometry { namespace geometry {
@ -286,11 +290,24 @@ void base_symbolizer_helper::initialize_points() const
success = true; success = true;
} }
} }
else if (how_placed == INTERIOR_PLACEMENT && type == geometry::geometry_types::Polygon) else if (type == geometry::geometry_types::Polygon)
{ {
auto const& poly = mapnik::util::get<geometry::polygon<double> >(geom); auto const& poly = util::get<geometry::polygon<double>>(geom);
geometry::polygon_vertex_adapter<double> va(poly); proj_transform backwart_transform(prj_trans_.dest(), prj_trans_.source());
success = label::interior_position(va, label_x, label_y); view_strategy vs(t_);
proj_strategy ps(backwart_transform);
using transform_group_type = geometry::strategy_group<proj_strategy, view_strategy>;
transform_group_type transform_group(ps, vs);
geometry::polygon<double> tranformed_poly(geometry::transform<double>(poly, transform_group));
if (how_placed == INTERIOR_PLACEMENT)
{
geometry::polygon_vertex_adapter<double> va(tranformed_poly);
if (label::interior_position(va, label_x, label_y))
{
points_.emplace_back(label_x, label_y);
}
}
continue;
} }
else else
{ {