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Defer projection init

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This commit is contained in:
Artem Pavlenko 2021-03-15 18:09:21 +00:00
parent 6099804559
commit 387d54fe9d
2 changed files with 30 additions and 30 deletions
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8
demo/viewer/mainwindow.cpp
View file

@ -421,11 +421,11 @@ void MainWindow::set_default_extent(double x0,double y0, double x1, double y1)
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);
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\n";
std::cout << "SET DEFAULT EXT:" << default_extent_ << std::endl;
}
}
catch (...) {}

52
demo/viewer/mapwidget.cpp
View file

@ -156,7 +156,7 @@ void MapWidget::mousePressEvent(QMouseEvent* e)
{
QVector<QPair<QString,QString> > info;
projection map_proj(map_->srs()); // map projection
projection map_proj(map_->srs(), true); // map projection
double scale_denom = scale_denominator(map_->scale(),map_proj.is_geographic());
view_transform t(map_->width(),map_->height(),map_->get_current_extent());
@ -170,7 +170,7 @@ void MapWidget::mousePressEvent(QMouseEvent* e)
double x = e->x();
double y = e->y();
std::cout << "query at " << x << "," << y << "\n";
projection layer_proj(layer.srs());
projection layer_proj(layer.srs(), true);
mapnik::proj_transform prj_trans(map_proj,layer_proj);
//std::auto_ptr<mapnik::memory_datasource> data(new mapnik::memory_datasource);
mapnik::featureset_ptr fs = map_->query_map_point(index,x,y);
@ -586,43 +586,43 @@ void MapWidget::updateMap()
try
{
projection prj(map_->srs()); // map projection
box2d<double> ext = map_->get_current_extent();
double x0 = ext.minx();
double y0 = ext.miny();
double x1 = ext.maxx();
double y1 = ext.maxy();
double z = 0;
std::string dest_srs = {"epsg:4326"};
mapnik::proj_transform proj_tr(map_->srs(), dest_srs);
projection prj(map_->srs(), true); // map projection
box2d<double> ext = map_->get_current_extent();
double x0 = ext.minx();
double y0 = ext.miny();
double x1 = ext.maxx();
double y1 = ext.maxy();
double z = 0;
std::string dest_srs = {"epsg:4326"};
mapnik::proj_transform proj_tr(map_->srs(), dest_srs);
proj_tr.forward(x0, y0, z);
proj_tr.forward(x1, y1, z);
std::cout << "MAP SIZE:" << map_->width() << "," << map_->height() << std::endl;
std::cout << "BBOX (WGS84): " << x0 << "," << y0 << "," << x1 << "," << y1 << "\n";
update();
// emit signal to interested widgets
emit mapViewChanged();
}
catch (...)
{
std::cerr << "Unknown exception caught!\n";
}
proj_tr.forward(x0, y0, z);
proj_tr.forward(x1, y1, z);
std::cout << "MAP SIZE:" << map_->width() << "," << map_->height() << std::endl;
std::cout << "BBOX (WGS84): " << x0 << "," << y0 << "," << x1 << "," << y1 << "\n";
update();
// emit signal to interested widgets
emit mapViewChanged();
}
catch (...)
{
std::cerr << "Unknown exception caught!\n";
}
}
}
std::shared_ptr<Map> MapWidget::getMap()
{
return map_;
return map_;
}
void MapWidget::setMap(std::shared_ptr<Map> map)
{
map_ = map;
map_ = map;
}
void MapWidget::layerSelected(int index)
{
selectedLayer_ = index;
selectedLayer_ = index;
}