void agg_renderer<T>::process(line_pattern_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
typedef agg::conv_clip_polyline<geometry_type> clipped_geometry_type;
typedef coord_transform2<CoordTransform,clipped_geometry_type> path_type;
typedef agg::line_image_pattern<agg::pattern_filter_bilinear_rgba8> pattern_type;
typedef agg::renderer_base<agg::pixfmt_rgba32_plain> renderer_base;
typedef agg::renderer_outline_image<renderer_base, pattern_type> renderer_type;
typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type;
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
agg::pixfmt_rgba32_plain pixf(buf);
std::string filename = path_processor_type::evaluate( *sym.get_filename(), *feature);
boost::optional<marker_ptr> mark = marker_cache::instance()->find(filename,true);
if (!mark) return;
if (!(*mark)->is_bitmap())
{
std::clog << "### Warning only images (not '" << filename << "') are supported in the line_pattern_symbolizer\n";
return;
}
boost::optional<image_ptr> pat = (*mark)->get_bitmap_data();
if (!pat) return;
box2d<double> ext = query_extent_ * 1.1;
renderer_base ren_base(pixf);
agg::pattern_filter_bilinear_rgba8 filter;
pattern_source source(*(*pat));
pattern_type pattern (filter,source);
renderer_type ren(ren_base, pattern);
// TODO - should be sensitive to buffer size
ren.clip_box(0,0,width_,height_);
rasterizer_type ras(ren);
//metawriter_with_properties writer = sym.get_metawriter();
for (unsigned i=0;i<feature->num_geometries();++i)
{
geometry_type & geom = feature->get_geometry(i);
if (geom.num_points() > 1)
{
clipped_geometry_type clipped(geom);
clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy());
path_type path(t_,clipped,prj_trans);
ras.add_path(path);
//if (writer.first) writer.first->add_line(path, *feature, t_, writer.second);
}
}
}
void grid_renderer<T>::process(shield_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
box2d<double> query_extent;
shield_symbolizer_helper<face_manager<freetype_engine>,
label_collision_detector4> helper(
sym, *feature, prj_trans,
width_, height_,
scale_factor_,
t_, font_manager_, detector_, query_extent);
bool placement_found = false;
text_renderer<T> ren(pixmap_, font_manager_, *(font_manager_.get_stroker()));
text_placement_info_ptr placement;
while (helper.next()) {
placement_found = true;
placements_type &placements = helper.placements();
for (unsigned int ii = 0; ii < placements.size(); ++ii)
{
render_marker(feature, pixmap_.get_resolution(),
helper.get_marker_position(placements[ii]),
helper.get_marker(), helper.get_transform(),
sym.get_opacity());
ren.prepare_glyphs(&(placements[ii]));
ren.render_id(feature->id(), placements[ii].center, 2);
}
}
if (placement_found)
pixmap_.add_feature(feature);
}
void grid_renderer<T>::process(line_pattern_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
typedef coord_transform2<CoordTransform,geometry_type> path_type;
typedef agg::renderer_base<mapnik::pixfmt_gray16> ren_base;
typedef agg::renderer_scanline_bin_solid<ren_base> renderer;
agg::scanline_bin sl;
grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
mapnik::pixfmt_gray16 pixf(buf);
ren_base renb(pixf);
renderer ren(renb);
ras_ptr->reset();
// TODO - actually handle image dimensions
int stroke_width = 2;
for (unsigned i=0;i<feature->num_geometries();++i)
{
geometry_type const& geom = feature->get_geometry(i);
if (geom.num_points() > 1)
{
path_type path(t_,geom,prj_trans);
agg::conv_stroke<path_type> stroke(path);
stroke.generator().miter_limit(4.0);
stroke.generator().width(stroke_width * scale_factor_);
ras_ptr->add_path(stroke);
}
}
// render id
ren.color(mapnik::gray16(feature->id()));
agg::render_scanlines(*ras_ptr, sl, ren);
// add feature properties to grid cache
pixmap_.add_feature(feature);
}
void agg_renderer<T>::process(raster_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
raster_ptr const& source=feature->get_raster();
if (source)
{
// If there's a colorizer defined, use it to color the raster in-place
raster_colorizer_ptr colorizer = sym.get_colorizer();
if (colorizer)
colorizer->colorize(source,*feature);
box2d<double> target_ext = box2d<double>(source->ext_);
prj_trans.backward(target_ext, PROJ_ENVELOPE_POINTS);
box2d<double> ext=t_.forward(target_ext);
int start_x = (int)ext.minx();
int start_y = (int)ext.miny();
int end_x = (int)ceil(ext.maxx());
int end_y = (int)ceil(ext.maxy());
int raster_width = end_x - start_x;
int raster_height = end_y - start_y;
double err_offs_x = ext.minx() - start_x;
double err_offs_y = ext.miny() - start_y;
if (raster_width > 0 && raster_height > 0)
{
double scale_factor = ext.width() / source->data_.width();
image_data_32 target_data(raster_width,raster_height);
raster target(target_ext, target_data);
reproject_raster(target, *source, prj_trans, err_offs_x, err_offs_y,
sym.get_mesh_size(),
sym.calculate_filter_factor(),
scale_factor,
sym.get_scaling());
composite(current_buffer_->data(), target.data_, sym.comp_op(), sym.get_opacity(), start_x, start_y, false, false);
}
}
}
void occi_featureset::convert_ordinates(mapnik::feature_ptr feature,
const mapnik::geometry_type::types& geom_type,
const std::vector<Number>& elem_info,
const std::vector<Number>& ordinates,
const int dimensions,
const bool is_single_geom,
const bool is_point_geom)
{
const int elem_size = elem_info.size();
const int ord_size = ordinates.size();
if (elem_size >= 0)
{
int offset = elem_info[0];
int etype = elem_info[1];
int interp = elem_info[2];
if (! is_single_geom && elem_size > SDO_ELEM_INFO_SIZE)
{
geometry_type* geom = new geometry_type(geom_type);
for (int i = SDO_ELEM_INFO_SIZE; i < elem_size; i+=3)
{
int next_offset = elem_info[i];
int next_etype = elem_info[i + 1];
int next_interp = elem_info[i + 2];
bool is_linear_element = true;
bool is_unknown_etype = false;
mapnik::geometry_type::types gtype = mapnik::geometry_type::types::Point;
switch (etype)
{
case SDO_ETYPE_POINT:
if (interp == SDO_INTERPRETATION_POINT) {}
if (interp > SDO_INTERPRETATION_POINT) {}
gtype = mapnik::geometry_type::types::Point;
break;
case SDO_ETYPE_LINESTRING:
if (interp == SDO_INTERPRETATION_STRAIGHT) {}
if (interp == SDO_INTERPRETATION_CIRCULAR) {}
gtype = mapnik::geometry_type::types::LineString;
break;
case SDO_ETYPE_POLYGON:
case SDO_ETYPE_POLYGON_INTERIOR:
if (interp == SDO_INTERPRETATION_STRAIGHT) {}
if (interp == SDO_INTERPRETATION_CIRCULAR) {}
if (interp == SDO_INTERPRETATION_RECTANGLE) {}
if (interp == SDO_INTERPRETATION_CIRCLE) {}
gtype = mapnik::geometry_type::types::Polygon;
break;
case SDO_ETYPE_COMPOUND_LINESTRING:
case SDO_ETYPE_COMPOUND_POLYGON:
case SDO_ETYPE_COMPOUND_POLYGON_INTERIOR:
// interp = next ETYPE to consider
is_linear_element = false;
gtype = mapnik::geometry_type::types::Polygon;
break;
case SDO_ETYPE_UNKNOWN: // unknown
default:
is_unknown_etype = true;
break;
}
if (is_unknown_etype)
{
break;
}
if (is_linear_element)
{
if (geom)
{
feature->add_geometry(geom);
}
geom = new geometry_type(gtype);
fill_geometry_type(geom,
offset - 1,
next_offset - 1,
ordinates,
dimensions,
is_point_geom);
}
offset = next_offset;
etype = next_etype;
interp = next_interp;
}
if (geom)
{
feature->add_geometry(geom);
geom = 0;
}
}
else
{
geometry_type * geom = new geometry_type(geom_type);
fill_geometry_type(geom,
offset - 1,
ord_size,
ordinates,
dimensions,
is_point_geom);
feature->add_geometry(geom);
}
}
}
void agg_renderer<T>::process(point_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
std::string filename = path_processor_type::evaluate(*sym.get_filename(), *feature);
boost::optional<mapnik::marker_ptr> marker;
if ( !filename.empty() )
{
marker = marker_cache::instance()->find(filename, true);
}
else
{
marker.reset(boost::make_shared<mapnik::marker>());
}
if (marker)
{
double w = (*marker)->width();
double h = (*marker)->height();
agg::trans_affine tr;
boost::array<double,6> const& m = sym.get_transform();
tr.load_from(&m[0]);
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);
for (unsigned i=0; i<feature->num_geometries(); ++i)
{
geometry_type const& geom = feature->get_geometry(i);
double x;
double y;
double z=0;
if (sym.get_point_placement() == CENTROID_POINT_PLACEMENT)
geom.label_position(&x, &y);
else
geom.label_interior_position(&x, &y);
prj_trans.backward(x,y,z);
t_.forward(&x,&y);
label_ext.re_center(x,y);
if (sym.get_allow_overlap() ||
detector_->has_placement(label_ext))
{
render_marker(pixel_position(x - 0.5 * w, y - 0.5 * h) ,**marker,tr, sym.get_opacity());
if (!sym.get_ignore_placement())
detector_->insert(label_ext);
metawriter_with_properties writer = sym.get_metawriter();
if (writer.first) writer.first->add_box(label_ext, *feature, t_, writer.second);
}
}
}
}
void agg_renderer<T>::process(polygon_pattern_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
typedef agg::conv_clip_polygon<geometry_type> clipped_geometry_type;
typedef coord_transform2<CoordTransform,clipped_geometry_type> path_type;
typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base;
typedef agg::wrap_mode_repeat wrap_x_type;
typedef agg::wrap_mode_repeat wrap_y_type;
typedef agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32_plain,
agg::row_accessor<agg::int8u>, agg::pixel32_type> rendering_buffer;
typedef agg::image_accessor_wrap<rendering_buffer,
wrap_x_type,
wrap_y_type> img_source_type;
typedef agg::span_pattern_rgba<img_source_type> span_gen_type;
typedef agg::renderer_scanline_aa<ren_base,
agg::span_allocator<agg::rgba8>,
span_gen_type> renderer_type;
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
agg::pixfmt_rgba32_plain pixf(buf);
ren_base renb(pixf);
agg::scanline_u8 sl;
ras_ptr->reset();
set_gamma_method(sym,ras_ptr);
std::string filename = path_processor_type::evaluate( *sym.get_filename(), *feature);
boost::optional<mapnik::marker_ptr> marker;
if ( !filename.empty() )
{
marker = marker_cache::instance()->find(filename, true);
}
else
{
std::clog << "### Warning: file not found: " << filename << "\n";
}
if (!marker) return;
if (!(*marker)->is_bitmap())
{
std::clog << "### Warning only images (not '" << filename << "') are supported in the polygon_pattern_symbolizer\n";
return;
}
boost::optional<image_ptr> pat = (*marker)->get_bitmap_data();
if (!pat) return;
unsigned w=(*pat)->width();
unsigned h=(*pat)->height();
agg::row_accessor<agg::int8u> pattern_rbuf((agg::int8u*)(*pat)->getBytes(),w,h,w*4);
agg::span_allocator<agg::rgba8> sa;
agg::pixfmt_alpha_blend_rgba<agg::blender_rgba32_plain,
agg::row_accessor<agg::int8u>, agg::pixel32_type> pixf_pattern(pattern_rbuf);
img_source_type img_src(pixf_pattern);
unsigned num_geometries = feature->num_geometries();
pattern_alignment_e align = sym.get_alignment();
unsigned offset_x=0;
unsigned offset_y=0;
if (align == LOCAL_ALIGNMENT)
{
double x0=0,y0=0;
if (num_geometries>0) // FIXME: hmm...?
{
clipped_geometry_type clipped(feature->get_geometry(0));
clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy());
path_type path(t_,clipped,prj_trans);
path.vertex(&x0,&y0);
}
offset_x = unsigned(width_-x0);
offset_y = unsigned(height_-y0);
}
span_gen_type sg(img_src, offset_x, offset_y);
renderer_type rp(renb,sa, sg);
//metawriter_with_properties writer = sym.get_metawriter();
for (unsigned i=0;i<num_geometries;++i)
{
geometry_type & geom = feature->get_geometry(i);
if (geom.num_points() > 2)
{
clipped_geometry_type clipped(geom);
clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy());
path_type path(t_,clipped,prj_trans);
ras_ptr->add_path(path);
//if (writer.first) writer.first->add_polygon(path, *feature, t_, writer.second);
}
}
agg::render_scanlines(*ras_ptr, sl, rp);
}
void grid_renderer<T>::process(line_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
typedef coord_transform2<CoordTransform,geometry_type> path_type;
typedef agg::renderer_base<mapnik::pixfmt_gray16> ren_base;
typedef agg::renderer_scanline_bin_solid<ren_base> renderer;
agg::scanline_bin sl;
grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
mapnik::pixfmt_gray16 pixf(buf);
ren_base renb(pixf);
renderer ren(renb);
ras_ptr->reset();
stroke const& stroke_ = sym.get_stroke();
for (unsigned i=0;i<feature->num_geometries();++i)
{
geometry_type & geom = feature->get_geometry(i);
if (geom.num_points() > 1)
{
path_type path(t_,geom,prj_trans);
if (stroke_.has_dash())
{
agg::conv_dash<path_type> dash(path);
dash_array const& d = stroke_.get_dash_array();
dash_array::const_iterator itr = d.begin();
dash_array::const_iterator end = d.end();
for (;itr != end;++itr)
{
dash.add_dash(itr->first * scale_factor_,
itr->second * scale_factor_);
}
agg::conv_stroke<agg::conv_dash<path_type > > stroke(dash);
line_join_e join=stroke_.get_line_join();
if ( join == MITER_JOIN)
stroke.generator().line_join(agg::miter_join);
else if( join == MITER_REVERT_JOIN)
stroke.generator().line_join(agg::miter_join);
else if( join == ROUND_JOIN)
stroke.generator().line_join(agg::round_join);
else
stroke.generator().line_join(agg::bevel_join);
line_cap_e cap=stroke_.get_line_cap();
if (cap == BUTT_CAP)
stroke.generator().line_cap(agg::butt_cap);
else if (cap == SQUARE_CAP)
stroke.generator().line_cap(agg::square_cap);
else
stroke.generator().line_cap(agg::round_cap);
stroke.generator().miter_limit(4.0);
stroke.generator().width(stroke_.get_width() * scale_factor_);
ras_ptr->add_path(stroke);
}
else
{
agg::conv_stroke<path_type> stroke(path);
line_join_e join=stroke_.get_line_join();
if ( join == MITER_JOIN)
stroke.generator().line_join(agg::miter_join);
else if( join == MITER_REVERT_JOIN)
stroke.generator().line_join(agg::miter_join);
else if( join == ROUND_JOIN)
stroke.generator().line_join(agg::round_join);
else
stroke.generator().line_join(agg::bevel_join);
line_cap_e cap=stroke_.get_line_cap();
if (cap == BUTT_CAP)
stroke.generator().line_cap(agg::butt_cap);
else if (cap == SQUARE_CAP)
stroke.generator().line_cap(agg::square_cap);
else
stroke.generator().line_cap(agg::round_cap);
stroke.generator().miter_limit(4.0);
stroke.generator().width(stroke_.get_width() * scale_factor_);
ras_ptr->add_path(stroke);
}
}
}
// render id
ren.color(mapnik::gray16(feature->id()));
agg::render_scanlines(*ras_ptr, sl, ren);
// add feature properties to grid cache
pixmap_.add_feature(feature);
}
void grid_renderer<T>::process(markers_symbolizer const& sym,
mapnik::feature_ptr const& feature,
proj_transform const& prj_trans)
{
typedef coord_transform2<CoordTransform,geometry_type> path_type;
typedef agg::renderer_base<mapnik::pixfmt_gray16> ren_base;
typedef agg::renderer_scanline_bin_solid<ren_base> renderer;
agg::scanline_bin sl;
grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
mapnik::pixfmt_gray16 pixf(buf);
ren_base renb(pixf);
renderer ren(renb);
ras_ptr->reset();
agg::trans_affine tr;
boost::array<double,6> const& m = sym.get_transform();
tr.load_from(&m[0]);
tr = agg::trans_affine_scaling(scale_factor_*(1.0/pixmap_.get_resolution())) * tr;
std::string filename = path_processor_type::evaluate(*sym.get_filename(), *feature);
marker_placement_e placement_method = sym.get_marker_placement();
marker_type_e marker_type = sym.get_marker_type();
if (!filename.empty())
{
boost::optional<marker_ptr> mark = mapnik::marker_cache::instance()->find(filename, true);
if (mark && *mark && (*mark)->is_vector())
{
boost::optional<path_ptr> marker = (*mark)->get_vector_data();
box2d<double> const& bbox = (*marker)->bounding_box();
double x1 = bbox.minx();
double y1 = bbox.miny();
double x2 = bbox.maxx();
double y2 = bbox.maxy();
agg::trans_affine recenter = agg::trans_affine_translation(-0.5*(x1+x2),-0.5*(y1+y2));
tr.transform(&x1,&y1);
tr.transform(&x2,&y2);
box2d<double> extent(x1,y1,x2,y2);
using namespace mapnik::svg;
vertex_stl_adapter<svg_path_storage> stl_storage((*marker)->source());
svg_path_adapter svg_path(stl_storage);
svg_renderer<svg_path_adapter,
agg::pod_bvector<path_attributes>,
renderer,
mapnik::pixfmt_gray16 > svg_renderer(svg_path,(*marker)->attributes());
bool placed = false;
for (unsigned i=0; i<feature->num_geometries(); ++i)
{
geometry_type & geom = feature->get_geometry(i);
if (geom.num_points() <= 1)
{
std::clog << "### Warning svg markers not supported yet for points within markers_symbolizer\n";
continue;
}
path_type path(t_,geom,prj_trans);
markers_placement<path_type, label_collision_detector4> placement(path, extent, detector_,
sym.get_spacing() * scale_factor_,
sym.get_max_error(),
sym.get_allow_overlap());
double x, y, angle;
while (placement.get_point(&x, &y, &angle))
{
placed = true;
agg::trans_affine matrix = recenter * tr *agg::trans_affine_rotation(angle) * agg::trans_affine_translation(x, y);
svg_renderer.render_id(*ras_ptr, sl, renb, feature->id(), matrix, sym.get_opacity(),bbox);
}
}
if (placed)
pixmap_.add_feature(feature);
}
}
else
{
stroke const& stroke_ = sym.get_stroke();
double strk_width = stroke_.get_width();
double w;
double h;
unsigned int res = pixmap_.get_resolution();
if (res != 1) {
// clamp to at least 4 px otherwise interactive pixels can be too small
double min = static_cast<double>(4/pixmap_.get_resolution());
w = std::max(sym.get_width()/res,min);
h = std::max(sym.get_height()/res,min);
} else {
w = sym.get_width()/res;
h = sym.get_height()/res;
}
arrow arrow_;
box2d<double> extent;
double dx = w + (2*strk_width);
double dy = h + (2*strk_width);
if (marker_type == ARROW)
{
extent = arrow_.extent();
double x1 = extent.minx();
double y1 = extent.miny();
double x2 = extent.maxx();
double y2 = extent.maxy();
tr.transform(&x1,&y1);
tr.transform(&x2,&y2);
extent.init(x1,y1,x2,y2);
}
else
{
double x1 = -1 *(dx);
double y1 = -1 *(dy);
double x2 = dx;
double y2 = dy;
tr.transform(&x1,&y1);
tr.transform(&x2,&y2);
extent.init(x1,y1,x2,y2);
}
double x;
double y;
double z=0;
for (unsigned i=0; i<feature->num_geometries(); ++i)
{
geometry_type & geom = feature->get_geometry(i);
if (placement_method == MARKER_POINT_PLACEMENT || geom.num_points() <= 1)
{
geom.label_position(&x,&y);
prj_trans.backward(x,y,z);
t_.forward(&x,&y);
int px = int(floor(x - 0.5 * dx));
int py = int(floor(y - 0.5 * dy));
box2d<double> label_ext (px, py, px + dx +1, py + dy +1);
if (sym.get_allow_overlap() ||
detector_.has_placement(label_ext))
{
agg::ellipse c(x, y, w, h);
agg::path_storage marker;
marker.concat_path(c);
ras_ptr->add_path(marker);
// outline
if (strk_width)
{
agg::conv_stroke<agg::path_storage> outline(marker);
outline.generator().width(strk_width * scale_factor_);
ras_ptr->add_path(outline);
}
detector_.insert(label_ext);
}
}
else
{
agg::path_storage marker;
if (marker_type == ARROW)
marker.concat_path(arrow_);
path_type path(t_,geom,prj_trans);
markers_placement<path_type, label_collision_detector4> placement(path, extent, detector_,
sym.get_spacing() * scale_factor_,
sym.get_max_error(),
sym.get_allow_overlap());
double x_t, y_t, angle;
while (placement.get_point(&x_t, &y_t, &angle))
{
agg::trans_affine matrix;
if (marker_type == ELLIPSE)
{
// todo proper bbox - this is buggy
agg::ellipse c(x_t, y_t, w, h);
marker.concat_path(c);
agg::trans_affine matrix;
matrix *= agg::trans_affine_translation(-x_t,-y_t);
matrix *= agg::trans_affine_rotation(angle);
matrix *= agg::trans_affine_translation(x_t,y_t);
marker.transform(matrix);
}
else
{
matrix = tr * agg::trans_affine_rotation(angle) * agg::trans_affine_translation(x_t, y_t);
}
agg::conv_transform<agg::path_storage, agg::trans_affine> trans(marker, matrix);
// fill
ras_ptr->add_path(trans);
// outline
if (strk_width)
{
agg::conv_stroke<agg::conv_transform<agg::path_storage, agg::trans_affine> > outline(trans);
outline.generator().width(strk_width * scale_factor_);
ras_ptr->add_path(outline);
}
}
}
}
ren.color(mapnik::gray16(feature->id()));
agg::render_scanlines(*ras_ptr, sl, ren);
pixmap_.add_feature(feature);
}
}
System::Int64 Feature::Id()
{
return (*_feature)->id();
}
array<System::Double>^ Feature::Extent()
{
return Box2DToArray((*_feature)->envelope());
}
System::Collections::Generic::IDictionary<System::String^, System::Object^>^ Feature::Attributes()
{
System::Collections::Generic::IDictionary<System::String^, System::Object^>^ feat = gcnew System::Collections::Generic::Dictionary<System::String^, System::Object^>();
mapnik::feature_ptr feature = *_feature;
mapnik::feature_impl::iterator itr = feature->begin();
mapnik::feature_impl::iterator end = feature->end();
for (; itr != end; ++itr)
{
System::String^ key = msclr::interop::marshal_as<System::String^>(std::get<0>(*itr));
params_to_object serializer(feat, key);
mapnik::util::apply_visitor(serializer, std::get<1>(*itr));
}
return feat;
}
Geometry^ Feature::Geometry()
{
return gcnew NETMapnik::Geometry(*_feature);
mapnik::feature_ptr next()
{
mapnik::feature_ptr result(feature_);
feature_.reset();
return result;
}