void operator () (markers_symbolizer const& sym)
{
expression_ptr const& height_expr = sym.get_height();
if (height_expr)
{
boost::apply_visitor(f_attr,*height_expr);
}
expression_ptr const& width_expr = sym.get_width();
if (width_expr)
{
boost::apply_visitor(f_attr,*width_expr);
}
collect_transform(sym.get_image_transform());
collect_transform(sym.get_transform());
}
void operator () (markers_symbolizer const& sym)
{
expression_ptr const& height_expr = sym.get_height();
if (height_expr)
{
boost::apply_visitor(f_attr,*height_expr);
}
expression_ptr const& width_expr = sym.get_width();
if (width_expr)
{
boost::apply_visitor(f_attr,*width_expr);
}
path_expression_ptr const& filename_expr = sym.get_filename();
if (filename_expr)
{
path_processor_type::collect_attributes(*filename_expr,names_);
}
collect_transform(sym.get_image_transform());
collect_transform(sym.get_transform());
}
void grid_renderer<T>::process(markers_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
typedef grid_rendering_buffer buf_type;
typedef typename grid_renderer_base_type::pixfmt_type pixfmt_type;
typedef typename grid_renderer_base_type::pixfmt_type::color_type color_type;
typedef agg::renderer_scanline_bin_solid<grid_renderer_base_type> renderer_type;
typedef label_collision_detector4 detector_type;
typedef boost::mpl::vector<clip_line_tag,clip_poly_tag,transform_tag,smooth_tag> conv_types;
std::string filename = path_processor_type::evaluate(*sym.get_filename(), feature);
if (!filename.empty())
{
boost::optional<marker_ptr> mark = mapnik::marker_cache::instance().find(filename, true);
if (mark && *mark)
{
ras_ptr->reset();
agg::trans_affine geom_tr;
evaluate_transform(geom_tr, feature, sym.get_transform());
agg::trans_affine tr = agg::trans_affine_scaling(scale_factor_*(1.0/pixmap_.get_resolution()));
if ((*mark)->is_vector())
{
using namespace mapnik::svg;
typedef agg::pod_bvector<path_attributes> svg_attribute_type;
typedef svg_renderer_agg<svg_path_adapter,
svg_attribute_type,
renderer_type,
pixfmt_type > svg_renderer_type;
typedef vector_markers_rasterizer_dispatch_grid<buf_type,
svg_renderer_type,
grid_rasterizer,
detector_type,
mapnik::grid > dispatch_type;
boost::optional<svg_path_ptr> const& stock_vector_marker = (*mark)->get_vector_data();
expression_ptr const& width_expr = sym.get_width();
expression_ptr const& height_expr = sym.get_height();
// special case for simple ellipse markers
// to allow for full control over rx/ry dimensions
if (filename == "shape://ellipse"
&& (width_expr || height_expr))
{
svg_storage_type marker_ellipse;
vertex_stl_adapter<svg_path_storage> stl_storage(marker_ellipse.source());
svg_path_adapter svg_path(stl_storage);
// TODO - clamping to >= 4 pixels
build_ellipse(sym, feature, marker_ellipse, svg_path);
svg_attribute_type attributes;
bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
svg_renderer_type svg_renderer(svg_path, result ? attributes : (*stock_vector_marker)->attributes());
evaluate_transform(tr, feature, sym.get_image_transform());
box2d<double> bbox = marker_ellipse.bounding_box();
coord2d center = bbox.center();
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine marker_trans = recenter * tr;
buf_type render_buf(pixmap_.raw_data(), width_, height_, width_);
dispatch_type rasterizer_dispatch(render_buf,
svg_renderer,
*ras_ptr,
bbox,
marker_trans,
sym,
*detector_,
scale_factor_,
feature,
pixmap_);
vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(query_extent_, rasterizer_dispatch, sym,t_,prj_trans,tr,scale_factor_);
if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
{
eGeomType type = feature.paths()[0].type();
if (type == Polygon)
converter.template set<clip_poly_tag>();
// line clipping disabled due to https://github.com/mapnik/mapnik/issues/1426
//else if (type == LineString)
// converter.template set<clip_line_tag>();
// don't clip if type==Point
}
converter.template set<transform_tag>(); //always transform
if (sym.smooth() > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
apply_markers_multi(feature, converter, sym);
}
else
{
box2d<double> const& bbox = (*mark)->bounding_box();
setup_transform_scaling(tr, bbox.width(), bbox.height(), feature, sym);
evaluate_transform(tr, feature, sym.get_image_transform());
// TODO - clamping to >= 4 pixels
coord2d center = bbox.center();
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine marker_trans = recenter * tr;
vertex_stl_adapter<svg_path_storage> stl_storage((*stock_vector_marker)->source());
svg_path_adapter svg_path(stl_storage);
svg_attribute_type attributes;
bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
svg_renderer_type svg_renderer(svg_path, result ? attributes : (*stock_vector_marker)->attributes());
buf_type render_buf(pixmap_.raw_data(), width_, height_, width_);
dispatch_type rasterizer_dispatch(render_buf,
svg_renderer,
*ras_ptr,
bbox,
marker_trans,
sym,
*detector_,
scale_factor_,
feature,
pixmap_);
vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(query_extent_, rasterizer_dispatch, sym,t_,prj_trans,tr,scale_factor_);
if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
{
eGeomType type = feature.paths()[0].type();
if (type == Polygon)
converter.template set<clip_poly_tag>();
// line clipping disabled due to https://github.com/mapnik/mapnik/issues/1426
//else if (type == LineString)
// converter.template set<clip_line_tag>();
// don't clip if type==Point
}
converter.template set<transform_tag>(); //always transform
if (sym.smooth() > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
apply_markers_multi(feature, converter, sym);
}
}
else // raster markers
{
setup_transform_scaling(tr, (*mark)->width(), (*mark)->height(), feature, sym);
evaluate_transform(tr, feature, sym.get_image_transform());
box2d<double> const& bbox = (*mark)->bounding_box();
// - clamp sizes to > 4 pixels of interactivity
coord2d center = bbox.center();
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine marker_trans = recenter * tr;
boost::optional<mapnik::image_ptr> marker = (*mark)->get_bitmap_data();
typedef raster_markers_rasterizer_dispatch_grid<buf_type,
grid_rasterizer,
pixfmt_type,
grid_renderer_base_type,
renderer_type,
detector_type,
mapnik::grid > dispatch_type;
buf_type render_buf(pixmap_.raw_data(), width_, height_, width_);
dispatch_type rasterizer_dispatch(render_buf,
*ras_ptr,
**marker,
marker_trans,
sym,
*detector_,
scale_factor_,
feature,
pixmap_);
vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(query_extent_, rasterizer_dispatch, sym,t_,prj_trans,tr,scale_factor_);
if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
{
eGeomType type = feature.paths()[0].type();
if (type == Polygon)
converter.template set<clip_poly_tag>();
// line clipping disabled due to https://github.com/mapnik/mapnik/issues/1426
//else if (type == LineString)
// converter.template set<clip_line_tag>();
// don't clip if type==Point
}
converter.template set<transform_tag>(); //always transform
if (sym.smooth() > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
apply_markers_multi(feature, converter, sym);
}
}
}
}
