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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 (...) {}

6
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);
@ -586,7 +586,7 @@ void MapWidget::updateMap()
try
{
projection prj(map_->srs()); // map projection
projection prj(map_->srs(), true); // map projection
box2d<double> ext = map_->get_current_extent();
double x0 = ext.minx();
double y0 = ext.miny();