void grid_renderer<T>::process(polygon_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
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())
{
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Only images (not '" << filename << "') are supported in the line_pattern_symbolizer";
return;
}
boost::optional<image_ptr> pat = (*mark)->get_bitmap_data();
if (!pat) return;
ras_ptr->reset();
agg::trans_affine tr;
evaluate_transform(tr, feature, sym.get_transform());
typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,smooth_tag> conv_types;
vertex_converter<box2d<double>, grid_rasterizer, polygon_pattern_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(query_extent_,*ras_ptr,sym,t_,prj_trans,tr,scale_factor_);
if (prj_trans.equal() && sym.clip()) converter.set<clip_poly_tag>(); //optional clip (default: true)
converter.set<transform_tag>(); //always transform
converter.set<affine_transform_tag>();
if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter
for ( geometry_type & geom : feature.paths())
{
if (geom.size() > 2)
{
converter.apply(geom);
}
}
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;
grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
pixfmt_type pixf(buf);
grid_renderer_base_type renb(pixf);
renderer_type ren(renb);
// render id
ren.color(color_type(feature.id()));
agg::scanline_bin sl;
ras_ptr->filling_rule(agg::fill_even_odd);
agg::render_scanlines(*ras_ptr, sl, ren);
// add feature properties to grid cache
pixmap_.add_feature(feature);
}
void agg_renderer<T0,T1>::process(debug_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
debug_symbolizer_mode_enum mode = get<debug_symbolizer_mode_enum>(sym, keys::mode, feature, common_.vars_, DEBUG_SYM_MODE_COLLISION);
ras_ptr->reset();
if (gamma_method_ != GAMMA_POWER || gamma_ != 1.0)
{
ras_ptr->gamma(agg::gamma_power());
gamma_method_ = GAMMA_POWER;
gamma_ = 1.0;
}
if (mode == DEBUG_SYM_MODE_RINGS)
{
RingRenderer<buffer_type> renderer(*ras_ptr,*current_buffer_,common_.t_,prj_trans);
render_ring_visitor<buffer_type> apply(renderer);
mapnik::util::apply_visitor(apply,feature.get_geometry());
}
else if (mode == DEBUG_SYM_MODE_COLLISION)
{
for (auto const& n : *common_.detector_)
{
draw_rect(pixmap_, n.get().box);
}
}
else if (mode == DEBUG_SYM_MODE_VERTEX)
{
using apply_vertex_mode = apply_vertex_mode<buffer_type>;
apply_vertex_mode apply(pixmap_, common_.t_, prj_trans);
util::apply_visitor(geometry::vertex_processor<apply_vertex_mode>(apply), feature.get_geometry());
}
}
void start_tile_feature(mapnik::feature_impl const& feature)
{
current_feature_ = current_layer_->add_features();
x_ = y_ = 0;
// TODO - encode as sint64: (n << 1) ^ ( n >> 63)
// test current behavior with negative numbers
current_feature_->set_id(feature.id());
feature_kv_iterator itr = feature.begin();
feature_kv_iterator end = feature.end();
for ( ;itr!=end; ++itr)
{
std::string const& name = MAPNIK_GET<0>(*itr);
mapnik::value const& val = MAPNIK_GET<1>(*itr);
if (!val.is_null())
{
// Insert the key index
keys_container::const_iterator key_itr = keys_.find(name);
if (key_itr == keys_.end())
{
// The key doesn't exist yet in the dictionary.
current_layer_->add_keys(name.c_str(), name.length());
size_t index = keys_.size();
keys_.insert(keys_container::value_type(name, index));
current_feature_->add_tags(index);
}
else
{
current_feature_->add_tags(key_itr->second);
}
// Insert the value index
values_container::const_iterator val_itr = values_.find(val);
if (val_itr == values_.end())
{
// The value doesn't exist yet in the dictionary.
to_tile_value visitor(current_layer_->add_values());
#if MAPNIK_VERSION >= 300000
MAPNIK_APPLY_VISITOR(visitor, val);
#else
MAPNIK_APPLY_VISITOR(visitor, val.base());
#endif
size_t index = values_.size();
values_.insert(values_container::value_type(val, index));
current_feature_->add_tags(index);
}
else
{
current_feature_->add_tags(val_itr->second);
}
}
}
}
void grid_renderer<T>::process(building_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
using pixfmt_type = typename grid_renderer_base_type::pixfmt_type;
using color_type = typename grid_renderer_base_type::pixfmt_type::color_type;
using renderer_type = agg::renderer_scanline_bin_solid<grid_renderer_base_type>;
using transform_path_type = transform_path_adapter<view_transform, vertex_adapter>;
agg::scanline_bin sl;
grid_rendering_buffer buf(pixmap_.raw_data(), common_.width_, common_.height_, common_.width_);
pixfmt_type pixf(buf);
grid_renderer_base_type renb(pixf);
renderer_type ren(renb);
ras_ptr->reset();
double height = get<value_double>(sym, keys::height, feature, common_.vars_, 0.0);
render_building_symbolizer(
feature, height,
[&](path_type const& faces)
{
vertex_adapter va(faces);
transform_path_type faces_path (common_.t_,va,prj_trans);
ras_ptr->add_path(faces_path);
ren.color(color_type(feature.id()));
agg::render_scanlines(*ras_ptr, sl, ren);
ras_ptr->reset();
},
[&](path_type const& frame)
{
vertex_adapter va(frame);
transform_path_type path(common_.t_,va,prj_trans);
agg::conv_stroke<transform_path_type> stroke(path);
ras_ptr->add_path(stroke);
ren.color(color_type(feature.id()));
agg::render_scanlines(*ras_ptr, sl, ren);
ras_ptr->reset();
},
[&](path_type const& roof)
{
vertex_adapter va(roof);
transform_path_type roof_path (common_.t_,va,prj_trans);
ras_ptr->add_path(roof_path);
ren.color(color_type(feature.id()));
agg::render_scanlines(*ras_ptr, sl, ren);
});
pixmap_.add_feature(feature);
}
void grid_renderer<T>::process(polygon_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
typedef agg::renderer_scanline_bin_solid<grid_renderer_base_type> renderer_type;
typedef typename grid_renderer_base_type::pixfmt_type pixfmt_type;
typedef typename grid_renderer_base_type::pixfmt_type::color_type color_type;
ras_ptr->reset();
agg::trans_affine tr;
evaluate_transform(tr, feature, sym.get_transform(), scale_factor_);
typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,simplify_tag,smooth_tag> conv_types;
vertex_converter<box2d<double>, grid_rasterizer, polygon_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types>
converter(query_extent_,*ras_ptr,sym,t_,prj_trans,tr,scale_factor_);
if (prj_trans.equal() && sym.clip()) converter.set<clip_poly_tag>(); //optional clip (default: true)
converter.set<transform_tag>(); //always transform
converter.set<affine_transform_tag>();
if (sym.simplify_tolerance() > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter
for ( geometry_type & geom : feature.paths())
{
if (geom.size() > 2)
{
converter.apply(geom);
}
}
grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_);
pixfmt_type pixf(buf);
grid_renderer_base_type renb(pixf);
renderer_type ren(renb);
// render id
ren.color(color_type(feature.id()));
agg::scanline_bin sl;
ras_ptr->filling_rule(agg::fill_even_odd);
agg::render_scanlines(*ras_ptr, sl, ren);
// add feature properties to grid cache
pixmap_.add_feature(feature);
}
void cairo_renderer<T>::process(debug_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
cairo_save_restore guard(context_);
debug_symbolizer_mode_enum mode = get<debug_symbolizer_mode_enum>(sym, keys::mode, feature, common_.vars_, DEBUG_SYM_MODE_COLLISION);
context_.set_operator(src_over);
context_.set_color(mapnik::color(255, 0, 0), 1.0);
context_.set_line_join(MITER_JOIN);
context_.set_line_cap(BUTT_CAP);
context_.set_miter_limit(4.0);
context_.set_line_width(1.0);
if (mode == DEBUG_SYM_MODE_COLLISION)
{
for (auto & n : *common_.detector_)
{
render_debug_box(context_, n.get().box);
}
}
else if (mode == DEBUG_SYM_MODE_VERTEX)
{
using apply_vertex_mode = apply_vertex_mode<cairo_context>;
apply_vertex_mode apply(context_, common_.t_, prj_trans);
util::apply_visitor(geometry::vertex_processor<apply_vertex_mode>(apply), feature.get_geometry());
}
}
void grid_renderer<T>::process(text_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
text_symbolizer_helper<face_manager<freetype_engine>,
label_collision_detector4> helper(
sym, feature, prj_trans,
width_, height_,
scale_factor_ * (1.0/pixmap_.get_resolution()),
t_, font_manager_, *detector_,
query_extent_);
bool placement_found = false;
text_renderer<T> ren(pixmap_,
font_manager_,
sym.get_halo_rasterizer(),
sym.comp_op(),
scale_factor_);
while (helper.next()) {
placement_found = true;
placements_type const& placements = helper.placements();
for (unsigned int ii = 0; ii < placements.size(); ++ii)
{
ren.prepare_glyphs(placements[ii]);
ren.render_id(feature.id(), placements[ii].center);
}
}
if (placement_found) pixmap_.add_feature(feature);
}
void render_raster_marker(RendererType ren,
RasterizerType & ras,
image_data_rgba8 & src,
mapnik::feature_impl const& feature,
agg::trans_affine const& marker_tr,
double opacity)
{
using color_type = typename RendererType::color_type;
agg::scanline_bin sl;
double width = src.width();
double height = src.height();
double p[8];
p[0] = 0; p[1] = 0;
p[2] = width; p[3] = 0;
p[4] = width; p[5] = height;
p[6] = 0; p[7] = height;
marker_tr.transform(&p[0], &p[1]);
marker_tr.transform(&p[2], &p[3]);
marker_tr.transform(&p[4], &p[5]);
marker_tr.transform(&p[6], &p[7]);
ras.move_to_d(p[0],p[1]);
ras.line_to_d(p[2],p[3]);
ras.line_to_d(p[4],p[5]);
ras.line_to_d(p[6],p[7]);
ren.color(color_type(feature.id()));
agg::render_scanlines(ras, sl, ren);
}
void grid_renderer<T>::process(text_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
agg::trans_affine tr;
auto transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (transform) evaluate_transform(tr, feature, common_.vars_, *transform, common_.scale_factor_);
text_symbolizer_helper helper(
sym, feature, common_.vars_, prj_trans,
common_.width_, common_.height_,
common_.scale_factor_ * (1.0/pixmap_.get_resolution()),
common_.t_, common_.font_manager_, *common_.detector_,
common_.query_extent_, tr);
bool placement_found = false;
composite_mode_e comp_op = get<composite_mode_e>(sym, keys::comp_op, feature, common_.vars_, src_over);
grid_text_renderer<T> ren(pixmap_,
comp_op,
common_.scale_factor_);
placements_list const& placements = helper.get();
value_integer feature_id = feature.id();
for (glyph_positions_ptr glyphs : placements)
{
ren.render(*glyphs, feature_id);
placement_found = true;
}
if (placement_found)
{
pixmap_.add_feature(feature);
}
}
void agg_renderer<T>::process(raster_symbolizer const& sym,
mapnik::feature_impl & 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 = static_cast<int>(ext.minx());
int start_y = static_cast<int>(ext.miny());
int end_x = static_cast<int>(ceil(ext.maxx()));
int end_y = static_cast<int>(ceil(ext.maxy()));
int raster_width = end_x - start_x;
int raster_height = end_y - start_y;
if (raster_width > 0 && raster_height > 0)
{
image_data_32 target_data(raster_width,raster_height);
raster target(target_ext, target_data);
scaling_method_e scaling_method = sym.get_scaling_method();
double filter_radius = sym.calculate_filter_factor();
double offset_x = ext.minx() - start_x;
double offset_y = ext.miny() - start_y;
if (!prj_trans.equal())
{
reproject_and_scale_raster(target, *source, prj_trans,
offset_x, offset_y,
sym.get_mesh_size(),
filter_radius,
scaling_method);
}
else
{
if (scaling_method == SCALING_BILINEAR8){
scale_image_bilinear8<image_data_32>(target.data_,source->data_, offset_x, offset_y);
} else {
double scaling_ratio = ext.width() / source->data_.width();
scale_image_agg<image_data_32>(target.data_,
source->data_,
scaling_method,
scaling_ratio,
offset_x,
offset_y,
filter_radius);
}
}
composite(current_buffer_->data(), target.data_, sym.comp_op(), sym.get_opacity(), start_x, start_y, true);
}
}
}
void agg_renderer<T0,T1>::process(dot_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
double width = 0.0;
double height = 0.0;
bool has_width = has_key(sym,keys::width);
bool has_height = has_key(sym,keys::height);
if (has_width && has_height)
{
width = get<double>(sym, keys::width, feature, common_.vars_, 0.0);
height = get<double>(sym, keys::height, feature, common_.vars_, 0.0);
}
else if (has_width)
{
width = height = get<double>(sym, keys::width, feature, common_.vars_, 0.0);
}
else if (has_height)
{
width = height = get<double>(sym, keys::height, feature, common_.vars_, 0.0);
}
double rx = width/2.0;
double ry = height/2.0;
double opacity = get<double>(sym, keys::opacity, feature, common_.vars_, 1.0);
color const& fill = get<mapnik::color>(sym, keys::fill, feature, common_.vars_, mapnik::color(128,128,128));
ras_ptr->reset();
agg::rendering_buffer buf(current_buffer_->raw_data(),current_buffer_->width(),current_buffer_->height(),current_buffer_->width() * 4);
using blender_type = agg::comp_op_adaptor_rgba_pre<agg::rgba8, agg::order_rgba>;
using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
using renderer_base = agg::renderer_base<pixfmt_comp_type>;
using renderer_type = agg::renderer_scanline_aa_solid<renderer_base>;
pixfmt_comp_type pixf(buf);
pixf.comp_op(static_cast<agg::comp_op_e>(get<composite_mode_e>(sym, keys::comp_op, feature, common_.vars_, src_over)));
renderer_base renb(pixf);
renderer_type ren(renb);
agg::scanline_u8 sl;
ren.color(agg::rgba8_pre(fill.red(), fill.green(), fill.blue(), int(fill.alpha() * opacity)));
agg::ellipse el(0,0,rx,ry);
unsigned num_steps = el.num_steps();
for (geometry_type const& geom : feature.paths()) {
double x,y,z = 0;
unsigned cmd = 1;
geom.rewind(0);
while ((cmd = geom.vertex(&x, &y)) != mapnik::SEG_END) {
if (cmd == SEG_CLOSE) continue;
prj_trans.backward(x,y,z);
common_.t_.forward(&x,&y);
el.init(x,y,rx,ry,num_steps);
ras_ptr->add_path(el);
agg::render_scanlines(*ras_ptr, sl, ren);
}
}
}
void hit_grid<T>::add_feature(mapnik::feature_impl const& feature)
{
value_type feature_id = feature.id();
// avoid adding duplicate features (e.g. in the case of both a line symbolizer and a polygon symbolizer)
typename feature_key_type::const_iterator feature_pos = f_keys_.find(feature_id);
if (feature_pos != f_keys_.end())
{
return;
}
if (ctx_->size() == 0)
{
context_type::map_type::const_iterator itr = feature.context()->begin();
context_type::map_type::const_iterator end = feature.context()->end();
for ( ;itr!=end; ++itr)
{
ctx_->add(itr->first,itr->second);
}
}
// NOTE: currently lookup keys must be strings,
// but this should be revisited
lookup_type lookup_value;
if (key_ == id_name_)
{
mapnik::util::to_string(lookup_value,feature_id);
}
else
{
if (feature.has_key(key_))
{
lookup_value = feature.get(key_).to_string();
}
else
{
MAPNIK_LOG_DEBUG(grid) << "hit_grid: Should not get here: key '" << key_ << "' not found in feature properties";
}
}
if (!lookup_value.empty())
{
// TODO - consider shortcutting f_keys if feature_id == lookup_value
// create a mapping between the pixel id and the feature key
f_keys_.emplace(feature_id,lookup_value);
// if extra fields have been supplied, push them into grid memory
if (!names_.empty())
{
// it is ~ 2x faster to copy feature attributes compared
// to building up a in-memory cache of feature_ptrs
// https://github.com/mapnik/mapnik/issues/1198
mapnik::feature_ptr feature2(mapnik::feature_factory::create(ctx_,feature_id));
feature2->set_data(feature.get_data());
features_.emplace(lookup_value,feature2);
}
}
else
{
MAPNIK_LOG_DEBUG(grid) << "hit_grid: Warning - key '" << key_ << "' was blank for " << feature;
}
}
bool svg_renderer<OutputIterator>::process(rule::symbolizers const& syms,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
// svg renderer supports processing of multiple symbolizers.
typedef coord_transform<CoordTransform, geometry_type> path_type;
bool process_path = false;
// process each symbolizer to collect its (path) information.
// path information (attributes from line_ and polygon_ symbolizers)
// is collected with the path_attributes_ data member.
for (symbolizer const& sym : syms)
{
if (is_path_based(sym))
{
process_path = true;
}
boost::apply_visitor(symbol_dispatch(*this, feature, prj_trans), sym);
}
if (process_path)
{
// generate path output for each geometry of the current feature.
for(std::size_t i=0; i<feature.num_geometries(); ++i)
{
geometry_type & geom = feature.get_geometry(i);
if(geom.size() > 0)
{
path_type path(t_, geom, prj_trans);
generator_.generate_path(path, path_attributes_);
}
}
// set the previously collected values back to their defaults
// for the feature that will be processed next.
path_attributes_.reset();
}
return true;
}
void grid_renderer<T>::process(shield_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
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_,
sym.get_halo_rasterizer(),
sym.comp_op(),
scale_factor_);
text_placement_info_ptr placement;
while (helper.next())
{
placement_found = true;
placements_type const& placements = helper.placements();
for (unsigned int ii = 0; ii < placements.size(); ++ii)
{
// get_marker_position returns (minx,miny) corner position,
// while (currently only) agg_renderer::render_marker newly
// expects center position;
// until all renderers and shield_symbolizer_helper are
// modified accordingly, we must adjust the position here
pixel_position pos = helper.get_marker_position(placements[ii]);
pos.x += 0.5 * helper.get_marker_width();
pos.y += 0.5 * helper.get_marker_height();
render_marker(feature,
pixmap_.get_resolution(),
pos,
helper.get_marker(),
helper.get_image_transform(),
sym.get_opacity(),
sym.comp_op());
ren.prepare_glyphs(placements[ii]);
ren.render_id(feature.id(), placements[ii].center);
}
}
if (placement_found)
pixmap_.add_feature(feature);
}
void cairo_renderer<T>::process(debug_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
using detector_type = label_collision_detector4;
cairo_save_restore guard(context_);
debug_symbolizer_mode_enum mode = get<debug_symbolizer_mode_enum>(sym, keys::mode, feature, common_.vars_, DEBUG_SYM_MODE_COLLISION);
context_.set_operator(src_over);
context_.set_color(mapnik::color(255, 0, 0), 1.0);
context_.set_line_join(MITER_JOIN);
context_.set_line_cap(BUTT_CAP);
context_.set_miter_limit(4.0);
context_.set_line_width(1.0);
if (mode == DEBUG_SYM_MODE_COLLISION)
{
typename detector_type::query_iterator itr = common_.detector_->begin();
typename detector_type::query_iterator end = common_.detector_->end();
for ( ;itr!=end; ++itr)
{
render_debug_box(context_, itr->box);
}
}
else if (mode == DEBUG_SYM_MODE_VERTEX)
{
for (auto const& geom : feature.paths())
{
double x;
double y;
double z = 0;
geom.rewind(0);
unsigned cmd = 1;
while ((cmd = geom.vertex(&x, &y)) != mapnik::SEG_END)
{
if (cmd == SEG_CLOSE) continue;
prj_trans.backward(x,y,z);
common_.t_.forward(&x,&y);
context_.move_to(std::floor(x) - 0.5, std::floor(y) + 0.5);
context_.line_to(std::floor(x) + 1.5, std::floor(y) + 0.5);
context_.move_to(std::floor(x) + 0.5, std::floor(y) - 0.5);
context_.line_to(std::floor(x) + 0.5, std::floor(y) + 1.5);
context_.stroke();
}
}
}
}
void grid_renderer<T>::process(shield_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
agg::trans_affine tr;
auto transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (transform) evaluate_transform(tr, feature, common_.vars_, *transform, common_.scale_factor_);
text_symbolizer_helper helper(
sym, feature, common_.vars_, prj_trans,
common_.width_, common_.height_,
common_.scale_factor_,
common_.t_, common_.font_manager_, *common_.detector_,
common_.query_extent_, tr);
bool placement_found = false;
composite_mode_e comp_op = get<composite_mode_e>(sym, keys::comp_op, feature, common_.vars_, src_over);
double opacity = get<double>(sym, keys::opacity, feature, common_.vars_, 1.0);
grid_text_renderer<T> ren(pixmap_,
comp_op,
common_.scale_factor_);
placements_list const& placements = helper.get();
value_integer feature_id = feature.id();
for (auto const& glyphs : placements)
{
marker_info_ptr mark = glyphs->get_marker();
if (mark)
{
render_marker(feature,
glyphs->marker_pos(),
*mark->marker_,
mark->transform_,
opacity, comp_op);
}
ren.render(*glyphs, feature_id);
placement_found = true;
}
if (placement_found)
{
pixmap_.add_feature(feature);
}
}
void grid_renderer<T>::process(text_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
box2d<double> clip_box = clipping_extent(common_);
agg::trans_affine tr;
auto transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (transform) evaluate_transform(tr, feature, common_.vars_, *transform, common_.scale_factor_);
text_symbolizer_helper helper(
sym, feature, common_.vars_, prj_trans,
common_.width_, common_.height_,
common_.scale_factor_,
common_.t_, common_.font_manager_, *common_.detector_,
clip_box, tr, common_.symbol_cache_);
bool placement_found = false;
composite_mode_e comp_op = get<composite_mode_e>(sym, keys::comp_op, feature, common_.vars_, src_over);
grid_text_renderer<T> ren(pixmap_,
comp_op,
common_.scale_factor_);
auto halo_transform = get_optional<transform_type>(sym, keys::halo_transform);
if (halo_transform)
{
agg::trans_affine halo_affine_transform;
evaluate_transform(halo_affine_transform, feature, common_.vars_, *halo_transform, common_.scale_factor_);
ren.set_halo_transform(halo_affine_transform);
}
placements_list const& placements = helper.get();
value_integer feature_id = feature.id();
for (auto const& glyphs : placements)
{
ren.render(*glyphs, feature_id);
placement_found = true;
}
if (placement_found)
{
pixmap_.add_feature(feature);
}
}
void render_building_symbolizer(mapnik::feature_impl const& feature,
double height,
F1 face_func, F2 frame_func, F3 roof_func)
{
auto const& geom = feature.get_geometry();
if (geom.is<geometry::polygon<double> >())
{
auto const& poly = geom.get<geometry::polygon<double> >();
detail::make_building(poly, height, face_func, frame_func, roof_func);
}
else if (geom.is<geometry::multi_polygon<double> >())
{
auto const& multi_poly = geom.get<geometry::multi_polygon<double> >();
for (auto const& poly : multi_poly)
{
detail::make_building(poly, height, face_func, frame_func, roof_func);
}
}
}
void grid_renderer<T>::process(shield_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
text_symbolizer_helper helper(
sym, feature, common_.vars_, prj_trans,
common_.width_, common_.height_,
common_.scale_factor_,
common_.t_, common_.font_manager_, *common_.detector_,
common_.query_extent_);
bool placement_found = false;
composite_mode_e comp_op = get<composite_mode_e>(sym, keys::comp_op, feature, common_.vars_, src_over);
double opacity = get<double>(sym, keys::opacity, feature, common_.vars_, 1.0);
grid_text_renderer<T> ren(pixmap_,
comp_op,
common_.scale_factor_);
placements_list const& placements = helper.get();
value_integer feature_id = feature.id();
for (glyph_positions_ptr glyphs : placements)
{
if (glyphs->marker())
{
render_marker(feature,
pixmap_.get_resolution(),
glyphs->marker_pos(),
*(glyphs->marker()->marker),
glyphs->marker()->transform,
opacity, comp_op);
}
ren.render(*glyphs, feature_id);
placement_found = true;
}
if (placement_found)
{
pixmap_.add_feature(feature);
}
}
void grid_renderer<T>::process(polygon_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
using renderer_type = agg::renderer_scanline_bin_solid<grid_renderer_base_type>;
using pixfmt_type = typename grid_renderer_base_type::pixfmt_type;
using color_type = typename grid_renderer_base_type::pixfmt_type::color_type;
using vertex_converter_type = vertex_converter<transform2_tag,
clip_poly_tag,
transform_tag,
affine_transform_tag,
simplify_tag,
smooth_tag,
contour_tag>;
ras_ptr->reset();
grid_rendering_buffer buf(pixmap_.raw_data(), common_.width_, common_.height_, common_.width_);
render_polygon_symbolizer<vertex_converter_type>(
sym, feature, prj_trans, common_, common_.query_extent_, *ras_ptr,
[&](color const &, double) {
pixfmt_type pixf(buf);
grid_renderer_base_type renb(pixf);
renderer_type ren(renb);
// render id
ren.color(color_type(feature.id()));
agg::scanline_bin sl;
ras_ptr->filling_rule(agg::fill_non_zero);
agg::render_scanlines(*ras_ptr, sl, ren);
// add feature properties to grid cache
pixmap_.add_feature(feature);
});
}
bool svg_renderer<OutputIterator>::process(rule::symbolizers const& syms,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
// svg renderer supports processing of multiple symbolizers.
using path_type = transform_path_adapter<view_transform, geometry_type>;
bool process_path = false;
// process each symbolizer to collect its (path) information.
// path information (attributes from line_ and polygon_ symbolizers)
// is collected with the path_attributes_ data member.
for (auto const& sym : syms)
{
if (is_path_based(sym))
{
process_path = true;
}
util::apply_visitor(symbolizer_dispatch<svg_renderer<OutputIterator>>(*this, feature, prj_trans), sym);
}
if (process_path)
{
// generate path output for each geometry of the current feature.
for (auto & geom : feature.paths())
{
if(geom.size() > 0)
{
path_type path(common_.t_, geom, prj_trans);
generate_path(generator_.output_iterator_, path, path_attributes_);
}
}
// set the previously collected values back to their defaults
// for the feature that will be processed next.
path_attributes_.reset();
}
return true;
}
void cairo_renderer<T>::process(line_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
composite_mode_e comp_op = get<composite_mode_e, keys::comp_op>(sym, feature, common_.vars_);
value_bool clip = get<value_bool, keys::clip>(sym, feature, common_.vars_);
value_double offset = get<value_double, keys::offset>(sym, feature, common_.vars_);
value_double simplify_tolerance = get<value_double, keys::simplify_tolerance>(sym, feature, common_.vars_);
value_double smooth = get<value_double, keys::smooth>(sym, feature, common_.vars_);
color stroke = get<color, keys::stroke>(sym, feature, common_.vars_);
value_double stroke_opacity = get<value_double, keys::stroke_opacity>(sym, feature, common_.vars_);
line_join_enum stroke_join = get<line_join_enum, keys::stroke_linejoin>(sym, feature, common_.vars_);
line_cap_enum stroke_cap = get<line_cap_enum, keys::stroke_linecap>(sym, feature, common_.vars_);
value_double miterlimit = get<value_double, keys::stroke_miterlimit>(sym, feature, common_.vars_);
value_double width = get<value_double, keys::stroke_width>(sym, feature, common_.vars_);
auto dash = get_optional<dash_array>(sym, keys::stroke_dasharray, feature, common_.vars_);
cairo_save_restore guard(context_);
context_.set_operator(comp_op);
context_.set_color(stroke, stroke_opacity);
context_.set_line_join(stroke_join);
context_.set_line_cap(stroke_cap);
context_.set_miter_limit(miterlimit);
context_.set_line_width(width * common_.scale_factor_);
if (dash)
{
context_.set_dash(*dash, common_.scale_factor_);
}
agg::trans_affine tr;
auto geom_transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (geom_transform) { evaluate_transform(tr, feature, common_.vars_, *geom_transform, common_.scale_factor_); }
box2d<double> clipping_extent = common_.query_extent_;
if (clip)
{
double padding = (double)(common_.query_extent_.width()/common_.width_);
double half_stroke = width/2.0;
if (half_stroke > 1)
padding *= half_stroke;
if (std::fabs(offset) > 0)
padding *= std::fabs(offset) * 1.2;
padding *= common_.scale_factor_;
clipping_extent.pad(padding);
}
using vertex_converter_type = vertex_converter<clip_line_tag,
clip_poly_tag,
transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag>;
vertex_converter_type converter(clipping_extent,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip)
{
geometry::geometry_types type = geometry::geometry_type(feature.get_geometry());
if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
converter.template set<clip_poly_tag>();
else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
converter.template set<clip_line_tag>();
}
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (smooth > 0.0) converter.set<smooth_tag>(); // optional smooth converter
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type, cairo_context>;
using vertex_processor_type = geometry::vertex_processor<apply_vertex_converter_type>;
apply_vertex_converter_type apply(converter, context_);
mapnik::util::apply_visitor(vertex_processor_type(apply),feature.get_geometry());
// stroke
context_.set_fill_rule(CAIRO_FILL_RULE_WINDING);
context_.stroke();
}
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);
}
}
}
}
void grid_renderer<T>::render_marker(mapnik::feature_impl & feature, unsigned int step, pixel_position const& pos, marker const& marker, agg::trans_affine const& tr, double opacity, composite_mode_e comp_op)
{
if (marker.is_vector())
{
typedef coord_transform<CoordTransform,geometry_type> path_type;
typedef agg::renderer_base<mapnik::pixfmt_gray32> 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_gray32 pixf(buf);
ren_base renb(pixf);
renderer ren(renb);
ras_ptr->reset();
box2d<double> const& bbox = (*marker.get_vector_data())->bounding_box();
coord<double,2> c = bbox.center();
// center the svg marker on '0,0'
agg::trans_affine mtx = agg::trans_affine_translation(-c.x,-c.y);
// apply symbol transformation to get to map space
mtx *= tr;
mtx *= agg::trans_affine_scaling(scale_factor_*(1.0/step));
// render the marker at the center of the marker box
mtx.translate(pos.x, pos.y);
using namespace mapnik::svg;
vertex_stl_adapter<svg_path_storage> stl_storage((*marker.get_vector_data())->source());
svg_path_adapter svg_path(stl_storage);
svg_renderer_agg<svg_path_adapter,
agg::pod_bvector<path_attributes>,
renderer,
mapnik::pixfmt_gray32> svg_renderer(svg_path,
(*marker.get_vector_data())->attributes());
svg_renderer.render_id(*ras_ptr, sl, renb, feature.id(), mtx, opacity, bbox);
}
else
{
image_data_32 const& data = **marker.get_bitmap_data();
double width = data.width();
double height = data.height();
double cx = 0.5 * width;
double cy = 0.5 * height;
if (step == 1 && (std::fabs(1.0 - scale_factor_) < 0.001 && tr.is_identity()))
{
// TODO - support opacity
pixmap_.set_rectangle(feature.id(), data,
boost::math::iround(pos.x - cx),
boost::math::iround(pos.y - cy));
}
else
{
// TODO - remove support for step != or add support for agg scaling with opacity
double ratio = (1.0/step);
image_data_32 target(ratio * data.width(), ratio * data.height());
mapnik::scale_image_agg<image_data_32>(target,data, SCALING_NEAR,
scale_factor_, 0.0, 0.0, 1.0, ratio);
pixmap_.set_rectangle(feature.id(), target,
boost::math::iround(pos.x - cx),
boost::math::iround(pos.y - cy));
}
}
pixmap_.add_feature(feature);
}
void render_building_symbolizer(mapnik::feature_impl &feature,
double height,
F1 face_func, F2 frame_func, F3 roof_func)
{
for (auto const& geom : feature.paths())
{
if (geom.size() > 2)
{
const std::unique_ptr<geometry_type> frame(new geometry_type(geometry_type::types::LineString));
const std::unique_ptr<geometry_type> roof(new geometry_type(geometry_type::types::Polygon));
std::deque<segment_t> face_segments;
double x0 = 0;
double y0 = 0;
double x,y;
geom.rewind(0);
for (unsigned cm = geom.vertex(&x, &y); cm != SEG_END;
cm = geom.vertex(&x, &y))
{
if (cm == SEG_MOVETO)
{
frame->move_to(x,y);
}
else if (cm == SEG_LINETO)
{
frame->line_to(x,y);
face_segments.push_back(segment_t(x0,y0,x,y));
}
else if (cm == SEG_CLOSE)
{
frame->close_path();
}
x0 = x;
y0 = y;
}
std::sort(face_segments.begin(),face_segments.end(), y_order);
for (auto const& seg : face_segments)
{
const std::unique_ptr<geometry_type> faces(new geometry_type(geometry_type::types::Polygon));
faces->move_to(std::get<0>(seg),std::get<1>(seg));
faces->line_to(std::get<2>(seg),std::get<3>(seg));
faces->line_to(std::get<2>(seg),std::get<3>(seg) + height);
faces->line_to(std::get<0>(seg),std::get<1>(seg) + height);
face_func(*faces);
//
frame->move_to(std::get<0>(seg),std::get<1>(seg));
frame->line_to(std::get<0>(seg),std::get<1>(seg)+height);
}
geom.rewind(0);
for (unsigned cm = geom.vertex(&x, &y); cm != SEG_END;
cm = geom.vertex(&x, &y))
{
if (cm == SEG_MOVETO)
{
frame->move_to(x,y+height);
roof->move_to(x,y+height);
}
else if (cm == SEG_LINETO)
{
frame->line_to(x,y+height);
roof->line_to(x,y+height);
}
else if (cm == SEG_CLOSE)
{
frame->close_path();
roof->close_path();
}
}
frame_func(*frame);
roof_func(*roof);
}
}
}
void cairo_renderer<T>::process(polygon_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
composite_mode_e comp_op = get<composite_mode_e, keys::comp_op>(sym, feature, common_.vars_);
std::string filename = get<std::string, keys::file>(sym, feature, common_.vars_);
value_bool clip = get<value_bool, keys::clip>(sym, feature, common_.vars_);
value_double simplify_tolerance = get<value_double, keys::simplify_tolerance>(sym, feature, common_.vars_);
value_double smooth = get<value_double, keys::smooth>(sym, feature, common_.vars_);
value_double opacity = get<value_double, keys::opacity>(sym, feature, common_.vars_);
agg::trans_affine image_tr = agg::trans_affine_scaling(common_.scale_factor_);
auto image_transform = get_optional<transform_type>(sym, keys::image_transform);
if (image_transform) evaluate_transform(image_tr, feature, common_.vars_, *image_transform);
cairo_save_restore guard(context_);
context_.set_operator(comp_op);
boost::optional<mapnik::marker_ptr> marker = mapnik::marker_cache::instance().find(filename,true);
if (!marker || !(*marker)) return;
unsigned offset_x=0;
unsigned offset_y=0;
box2d<double> const& clip_box = clipping_extent(common_);
pattern_alignment_enum alignment = get<pattern_alignment_enum, keys::alignment>(sym, feature, common_.vars_);
if (alignment == LOCAL_ALIGNMENT)
{
double x0 = 0.0;
double y0 = 0.0;
if (feature.num_geometries() > 0)
{
using clipped_geometry_type = agg::conv_clip_polygon<geometry_type>;
using path_type = transform_path_adapter<view_transform,clipped_geometry_type>;
clipped_geometry_type clipped(feature.get_geometry(0));
clipped.clip_box(clip_box.minx(), clip_box.miny(),
clip_box.maxx(), clip_box.maxy());
path_type path(common_.t_, clipped, prj_trans);
path.vertex(&x0, &y0);
}
offset_x = std::abs(clip_box.width() - x0);
offset_y = std::abs(clip_box.height() - y0);
}
if ((*marker)->is_bitmap())
{
cairo_pattern pattern(**((*marker)->get_bitmap_data()), opacity);
pattern.set_extend(CAIRO_EXTEND_REPEAT);
pattern.set_origin(offset_x, offset_y);
context_.set_pattern(pattern);
}
else
{
mapnik::rasterizer ras;
image_ptr image = render_pattern(ras, **marker, image_tr, 1.0); //
cairo_pattern pattern(*image, opacity);
pattern.set_extend(CAIRO_EXTEND_REPEAT);
pattern.set_origin(offset_x, offset_y);
context_.set_pattern(pattern);
}
agg::trans_affine tr;
auto geom_transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (geom_transform) {
evaluate_transform(tr, feature, common_.vars_, *geom_transform, common_.scale_factor_);
}
vertex_converter<cairo_context,clip_poly_tag,transform_tag,affine_transform_tag,simplify_tag,smooth_tag>
converter(clip_box, context_,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (prj_trans.equal() && clip) converter.set<clip_poly_tag>(); //optional clip (default: true)
converter.set<transform_tag>(); //always transform
converter.set<affine_transform_tag>();
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (smooth > 0.0) converter.set<smooth_tag>(); // optional smooth converter
for ( geometry_type & geom : feature.paths())
{
if (geom.size() > 2)
{
converter.apply(geom);
}
}
// fill polygon
context_.set_fill_rule(CAIRO_FILL_RULE_EVEN_ODD);
context_.fill();
}
coord<unsigned, 2> offset(Sym const & sym,
mapnik::feature_impl const & feature,
proj_transform const & prj_trans,
renderer_common const & common,
box2d<double> const & clip_box)
{
coord<unsigned, 2> off(0, 0);
pattern_alignment_enum alignment = get<pattern_alignment_enum, keys::alignment>(sym, feature, common.vars_);
if (alignment == LOCAL_ALIGNMENT)
{
coord<double, 2> alignment(0, 0);
apply_local_alignment apply(common.t_, prj_trans, clip_box, alignment.x, alignment.y);
util::apply_visitor(geometry::vertex_processor<apply_local_alignment>(apply), feature.get_geometry());
off.x = std::abs(clip_box.width() - alignment.x);
off.y = std::abs(clip_box.height() - alignment.y);
}
return off;
}
void cairo_renderer<T>::process(line_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
composite_mode_e comp_op = get<composite_mode_e, keys::comp_op>(sym, feature, common_.vars_);
value_bool clip = get<value_bool, keys::clip>(sym, feature, common_.vars_);
value_double offset = get<value_double, keys::offset>(sym, feature, common_.vars_);
value_double simplify_tolerance = get<value_double, keys::simplify_tolerance>(sym, feature, common_.vars_);
value_double smooth = get<value_double, keys::smooth>(sym, feature, common_.vars_);
color stroke = get<color, keys::stroke>(sym, feature, common_.vars_);
value_double stroke_opacity = get<value_double, keys::stroke_opacity>(sym, feature, common_.vars_);
line_join_enum stroke_join = get<line_join_enum, keys::stroke_linejoin>(sym, feature, common_.vars_);
line_cap_enum stroke_cap = get<line_cap_enum, keys::stroke_linecap>(sym, feature, common_.vars_);
value_double miterlimit = get<value_double, keys::stroke_miterlimit>(sym, feature, common_.vars_);
value_double width = get<value_double, keys::stroke_width>(sym, feature, common_.vars_);
auto dash = get_optional<dash_array>(sym, keys::stroke_dasharray, feature, common_.vars_);
cairo_save_restore guard(context_);
context_.set_operator(comp_op);
context_.set_color(stroke, stroke_opacity);
context_.set_line_join(stroke_join);
context_.set_line_cap(stroke_cap);
context_.set_miter_limit(miterlimit);
context_.set_line_width(width * common_.scale_factor_);
if (dash)
{
context_.set_dash(*dash, common_.scale_factor_);
}
agg::trans_affine tr;
auto geom_transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (geom_transform) { evaluate_transform(tr, feature, common_.vars_, *geom_transform, common_.scale_factor_); }
box2d<double> clipping_extent = common_.query_extent_;
if (clip)
{
double padding = (double)(common_.query_extent_.width()/common_.width_);
double half_stroke = width/2.0;
if (half_stroke > 1)
padding *= half_stroke;
if (std::fabs(offset) > 0)
padding *= std::fabs(offset) * 1.2;
padding *= common_.scale_factor_;
clipping_extent.pad(padding);
}
vertex_converter<cairo_context,
clip_line_tag,
transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag,
dash_tag, stroke_tag>
converter(clipping_extent,context_,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); // optional clip (default: true)
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (smooth > 0.0) converter.set<smooth_tag>(); // optional smooth converter
for (geometry_type & geom : feature.paths())
{
if (geom.size() > 1)
{
converter.apply(geom);
}
}
// stroke
context_.set_fill_rule(CAIRO_FILL_RULE_WINDING);
context_.stroke();
}
void cairo_renderer<T>::process(line_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
std::string filename = get<std::string, keys::file>(sym, feature, common_.vars_);
composite_mode_e comp_op = get<composite_mode_e, keys::comp_op>(sym, feature, common_.vars_);
value_bool clip = get<value_bool, keys::clip>(sym, feature, common_.vars_);
value_double offset = get<value_double, keys::offset>(sym, feature, common_.vars_);
value_double simplify_tolerance = get<value_double, keys::simplify_tolerance>(sym, feature, common_.vars_);
value_double smooth = get<value_double, keys::smooth>(sym, feature, common_.vars_);
if (filename.empty())
{
return;
}
std::shared_ptr<mapnik::marker const> marker = marker_cache::instance().find(filename, true);
if (marker->is<mapnik::marker_null>()) return;
unsigned width = marker->width();
unsigned height = marker->height();
cairo_save_restore guard(context_);
context_.set_operator(comp_op);
// TODO - re-implement at renderer level like polygon_pattern symbolizer
cairo_renderer_process_visitor_l visit(common_,
sym,
feature,
width,
height);
std::shared_ptr<cairo_pattern> pattern = util::apply_visitor(visit, *marker);
context_.set_line_width(height);
pattern->set_extend(CAIRO_EXTEND_REPEAT);
pattern->set_filter(CAIRO_FILTER_BILINEAR);
agg::trans_affine tr;
auto geom_transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (geom_transform) { evaluate_transform(tr, feature, common_.vars_, *geom_transform, common_.scale_factor_); }
box2d<double> clipping_extent = common_.query_extent_;
if (clip)
{
double padding = (double)(common_.query_extent_.width()/common_.width_);
double half_stroke = width/2.0;
if (half_stroke > 1)
padding *= half_stroke;
if (std::fabs(offset) > 0)
padding *= std::fabs(offset) * 1.2;
padding *= common_.scale_factor_;
clipping_extent.pad(padding);
}
using rasterizer_type = line_pattern_rasterizer<cairo_context>;
rasterizer_type ras(context_, *pattern, width, height);
using vertex_converter_type = vertex_converter<clip_line_tag, transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag>;
vertex_converter_type converter(clipping_extent,sym, common_.t_, prj_trans, tr, feature, common_.vars_, common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); // optional clip (default: true)
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (smooth > 0.0) converter.set<smooth_tag>(); // optional smooth converter
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type, rasterizer_type>;
using vertex_processor_type = geometry::vertex_processor<apply_vertex_converter_type>;
apply_vertex_converter_type apply(converter, ras);
mapnik::util::apply_visitor(vertex_processor_type(apply), feature.get_geometry());
}
void agg_renderer<T0,T1>::process(polygon_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
std::string filename = get<std::string, keys::file>(sym, feature, common_.vars_);
if (filename.empty()) return;
std::shared_ptr<mapnik::marker const> marker = marker_cache::instance().find(filename, true);
buffer_type & current_buffer = buffers_.top().get();
agg::rendering_buffer buf(current_buffer.bytes(), current_buffer.width(),
current_buffer.height(), current_buffer.row_size());
ras_ptr->reset();
value_double gamma = get<value_double, keys::gamma>(sym, feature, common_.vars_);
gamma_method_enum gamma_method = get<gamma_method_enum, keys::gamma_method>(sym, feature, common_.vars_);
if (gamma != gamma_ || gamma_method != gamma_method_)
{
set_gamma_method(ras_ptr, gamma, gamma_method);
gamma_method_ = gamma_method;
gamma_ = gamma;
}
value_bool clip = get<value_bool, keys::clip>(sym, feature, common_.vars_);
value_double opacity = get<double, keys::opacity>(sym, feature, common_.vars_);
value_double simplify_tolerance = get<value_double, keys::simplify_tolerance>(sym, feature, common_.vars_);
value_double smooth = get<value_double, keys::smooth>(sym, feature, common_.vars_);
using color = agg::rgba8;
using order = agg::order_rgba;
using blender_type = agg::comp_op_adaptor_rgba_pre<color, order>;
using pixfmt_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
using wrap_x_type = agg::wrap_mode_repeat;
using wrap_y_type = agg::wrap_mode_repeat;
using img_source_type = agg::image_accessor_wrap<agg::pixfmt_rgba32_pre,
wrap_x_type,
wrap_y_type>;
using span_gen_type = agg::span_pattern_rgba<img_source_type>;
using ren_base = agg::renderer_base<pixfmt_type>;
using renderer_type = agg::renderer_scanline_aa_alpha<ren_base,
agg::span_allocator<agg::rgba8>,
span_gen_type>;
pixfmt_type pixf(buf);
pixf.comp_op(static_cast<agg::comp_op_e>(get<composite_mode_e, keys::comp_op>(sym, feature, common_.vars_)));
ren_base renb(pixf);
common_pattern_process_visitor<polygon_pattern_symbolizer, rasterizer> visitor(*ras_ptr, common_, sym, feature);
image_rgba8 image(util::apply_visitor(visitor, *marker));
unsigned w = image.width();
unsigned h = image.height();
agg::rendering_buffer pattern_rbuf((agg::int8u*)image.bytes(),w,h,w*4);
agg::pixfmt_rgba32_pre pixf_pattern(pattern_rbuf);
img_source_type img_src(pixf_pattern);
box2d<double> clip_box = clipping_extent(common_);
coord<unsigned, 2> offset(detail::offset(sym, feature, prj_trans, common_, clip_box));
span_gen_type sg(img_src, offset.x, offset.y);
agg::span_allocator<agg::rgba8> sa;
renderer_type rp(renb,sa, sg, unsigned(opacity * 255));
agg::trans_affine tr;
auto transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (transform) evaluate_transform(tr, feature, common_.vars_, *transform, common_.scale_factor_);
using vertex_converter_type = vertex_converter<clip_poly_tag,
transform_tag,
affine_transform_tag,
simplify_tag,
smooth_tag>;
vertex_converter_type converter(clip_box, sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (prj_trans.equal() && clip) converter.set<clip_poly_tag>();
converter.set<transform_tag>(); //always transform
converter.set<affine_transform_tag>(); // optional affine transform
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (smooth > 0.0) converter.set<smooth_tag>(); // optional smooth converter
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type, rasterizer>;
using vertex_processor_type = geometry::vertex_processor<apply_vertex_converter_type>;
apply_vertex_converter_type apply(converter, *ras_ptr);
mapnik::util::apply_visitor(vertex_processor_type(apply),feature.get_geometry());
agg::scanline_u8 sl;
ras_ptr->filling_rule(agg::fill_even_odd);
agg::render_scanlines(*ras_ptr, sl, rp);
}