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+ update shield-symbolizer to use 'transformed' label extent (#808)

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This commit is contained in:
Artem Pavlenko 2011-09-25 17:58:13 +00:00
parent 12072606d6
commit a88a49960d
1 changed files with 28 additions and 12 deletions
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40
src/agg/process_shield_symbolizer.cpp
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@ -91,8 +91,28 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
marker.reset(boost::make_shared<mapnik::marker>());
}
if (text.length() > 0 && marker)
{
int w = (*marker)->width();
int h = (*marker)->height();
double px0 = - 0.5 * w;
double py0 = - 0.5 * h;
double px1 = 0.5 * w;
double py1 = 0.5 * h;
double px2 = px1;
double py2 = py0;
double px3 = px0;
double py3 = py1;
tr.transform(&px0,&py0);
tr.transform(&px1,&py1);
tr.transform(&px2,&py2);
tr.transform(&px3,&py3);
box2d<double> label_ext (px0, py0, px1, py1);
label_ext.expand_to_include(px2, py2);
label_ext.expand_to_include(px3, py3);
face_set_ptr faces;
if (sym.get_fontset().size() > 0)
@ -121,9 +141,6 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
faces->get_string_info(info);
int w = (*marker)->width();
int h = (*marker)->height();
metawriter_with_properties writer = sym.get_metawriter();
for (unsigned i = 0; i < feature.num_geometries(); ++i)
@ -175,8 +192,7 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
double y = floor(text_placement.placements[0].starting_y);
int px;
int py;
box2d<double> label_ext;
if( !sym.get_unlock_image() )
{
// center image at text center position
@ -185,15 +201,15 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
double ly = y - boost::get<1>(pos);
px=int(floor(lx - (0.5 * w))) + 1;
py=int(floor(ly - (0.5 * h))) + 1;
label_ext.init( floor(lx - 0.5 * w), floor(ly - 0.5 * h), ceil (lx + 0.5 * w), ceil (ly + 0.5 * h) );
label_ext.re_center(lx,ly);
}
else
{ // center image at reference location
px=int(floor(label_x - 0.5 * w));
py=int(floor(label_y - 0.5 * h));
label_ext.init( floor(label_x - 0.5 * w), floor(label_y - 0.5 * h), ceil (label_x + 0.5 * w), ceil (label_y + 0.5 * h));
label_ext.re_center(label_x,label_y);
}
if ( sym.get_allow_overlap() || detector_.has_placement(label_ext) )
{
render_marker(px,py,**marker,tr,sym.get_opacity());
@ -203,7 +219,7 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
detector_.insert(label_ext);
finder.update_detector(text_placement);
if (writer.first) {
writer.first->add_box(box2d<double>(px,py,px+w,py+h), feature, t_, writer.second);
writer.first->add_box(label_ext, feature, t_, writer.second);
writer.first->add_text(text_placement, faces, feature, t_, writer.second);
}
}
@ -213,8 +229,8 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
else if (geom.num_points() > 1 && how_placed == LINE_PLACEMENT)
{
placement text_placement(info, sym, scale_factor_, w, h, true);
placement text_placement(info, sym, scale_factor_, label_ext.width(), label_ext.height(), true);
text_placement.avoid_edges = sym.get_avoid_edges();
finder.find_point_placements<path_type>(text_placement, placement_options, path);
@ -231,7 +247,7 @@ void agg_renderer<T>::process(shield_symbolizer const& sym,
render_marker(px,py,**marker,tr,sym.get_opacity());
if (writer.first) writer.first->add_box(box2d<double>(px,py,px+w,py+h), feature, t_, writer.second);
if (writer.first) writer.first->add_box(label_ext, feature, t_, writer.second);
box2d<double> dim = ren.prepare_glyphs(&text_placement.placements[ii]);
ren.render(x,y);