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demo viewer - fix bounding box reprojection

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This commit is contained in:
Artem Pavlenko 2024-11-25 14:19:41 +00:00
parent 9a1ab13ecb
commit f58e7ed04b
1 changed files with 12 additions and 6 deletions
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18
demo/viewer/mainwindow.cpp
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@ -42,6 +42,7 @@
#include <mapnik/load_map.hpp>
#include <mapnik/save_map.hpp>
#include <mapnik/projection.hpp>
#include <mapnik/proj_transform.hpp>
#include <mapnik/util/timer.hpp>
#endif
@ -408,12 +409,17 @@ void MainWindow::set_default_extent(double x0, double y0, double x1, double y1)
std::shared_ptr<mapnik::Map> map_ptr = mapWidget_->getMap();
if (map_ptr)
{
mapnik::projection prj(map_ptr->srs());
prj.forward(x0, y0);
prj.forward(x1, y1);
default_extent_ = mapnik::box2d<double>(x0, y0, x1, y1);
mapWidget_->zoomToBox(default_extent_);
std::cout << "SET DEFAULT EXT:" << default_extent_ << std::endl;
mapnik::projection wgs84("epsg:4326");
mapnik::projection map_proj(map_ptr->srs());
std::cerr << map_ptr->srs() << std::endl;
mapnik::proj_transform tr(wgs84, map_proj);
auto bbox = mapnik::box2d<double>(x0, y0, x1, y1);
if (tr.forward(bbox))
{
default_extent_ = bbox;
mapWidget_->zoomToBox(default_extent_);
std::cout << "SET DEFAULT EXT:" << default_extent_ << std::endl;
}
}
}
catch (...)