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+ print bbox in Lat/Lon wgs84 to stdout

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This commit is contained in:
Artem Pavlenko 2010-06-03 12:34:37 +00:00
parent 6cc6eac442
commit 68a620576f
1 changed files with 25 additions and 15 deletions
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40
demo/viewer/mapwidget.cpp
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@ -98,7 +98,7 @@ void MapWidget::paintEvent(QPaintEvent*)
unsigned height = end_y_-start_y_; unsigned height = end_y_-start_y_;
painter.drawPixmap(QPoint(0, 0),pix_); painter.drawPixmap(QPoint(0, 0),pix_);
painter.setPen(pen_); painter.setPen(pen_);
painter.setBrush(QColor(200,200,255,128)); painter.setBrush(QColor(200,200,255,128));
painter.drawRect(start_x_,start_y_,width,height); painter.drawRect(start_x_,start_y_,width,height);
} }
else if (cur_tool_ == Pan) else if (cur_tool_ == Pan)
@ -160,7 +160,7 @@ void MapWidget::mousePressEvent(QMouseEvent* e)
mapnik::proj_transform prj_trans(map_proj,layer_proj); mapnik::proj_transform prj_trans(map_proj,layer_proj);
//std::auto_ptr<mapnik::memory_datasource> data(new mapnik::memory_datasource); //std::auto_ptr<mapnik::memory_datasource> data(new mapnik::memory_datasource);
mapnik::featureset_ptr fs = map_->query_map_point(index,x,y); mapnik::featureset_ptr fs = map_->query_map_point(index,x,y);
if (fs) if (fs)
{ {
feature_ptr feat = fs->next(); feature_ptr feat = fs->next();
@ -223,7 +223,7 @@ void MapWidget::mousePressEvent(QMouseEvent* e)
} }
} }
else if (e->button()==Qt::RightButton) else if (e->button()==Qt::RightButton)
{ {
//updateMap(); //updateMap();
} }
} }
@ -249,7 +249,7 @@ void MapWidget::mouseReleaseEvent(QMouseEvent* e)
drag_=false; drag_=false;
if (map_) if (map_)
{ {
CoordTransform t(map_->getWidth(),map_->getHeight(),map_->getCurrentExtent()); CoordTransform t(map_->getWidth(),map_->getHeight(),map_->getCurrentExtent());
box2d<double> box = t.backward(box2d<double>(start_x_,start_y_,end_x_,end_y_)); box2d<double> box = t.backward(box2d<double>(start_x_,start_y_,end_x_,end_y_));
map_->zoomToBox(box); map_->zoomToBox(box);
updateMap(); updateMap();
@ -456,23 +456,33 @@ void MapWidget::updateMap()
try try
{ {
mapnik::agg_renderer<image_32> ren(*map_,buf); mapnik::agg_renderer<image_32> ren(*map_,buf);
ren.apply(); ren.apply();
QImage image((uchar*)buf.raw_data(),width,height,QImage::Format_ARGB32); QImage image((uchar*)buf.raw_data(),width,height,QImage::Format_ARGB32);
pix_=QPixmap::fromImage(image.rgbSwapped()); pix_=QPixmap::fromImage(image.rgbSwapped());
update(); update();
// emit signal to interested widgets // emit signal to interested widgets
emit mapViewChanged(); emit mapViewChanged();
std::cout << map_->getCurrentExtent() << "\n";
projection prj(map_->srs()); // map projection
box2d<double> ext = map_->getCurrentExtent();
double x0 = ext.minx();
double y0 = ext.miny();
double x1 = ext.maxx();
double y1 = ext.maxy();
prj.inverse(x0,y0);
prj.inverse(x1,y1);
std::cout << "BBOX (WGS84): " << x0 << "," << y0 << "," << x1 << "," << y1 << "\n";
} }
catch (mapnik::config_error & ex) catch (mapnik::config_error & ex)
{ {
std::cerr << ex.what() << std::endl; std::cerr << ex.what() << std::endl;
} }
catch (...) catch (...)
{ {
std::cerr << "Unknown exception caught!\n"; std::cerr << "Unknown exception caught!\n";
} }
} }
} }