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 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 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);
}
}
}
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 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 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_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);
}
void grid_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_);
if (filename.empty()) return;
std::shared_ptr<mapnik::marker const> mark = marker_cache::instance().find(filename, true);
if (mark->is<mapnik::marker_null>()) return;
if (!mark->is<mapnik::marker_rgba8>())
{
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Only images (not '" << filename << "') are supported in the line_pattern_symbolizer";
return;
}
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_);
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>;
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();
line_pattern_enum pattern = get<line_pattern_enum, keys::line_pattern>(sym, feature, common_.vars_);
std::size_t stroke_width = (pattern == LINE_PATTERN_WARP) ? mark->width() :
get<value_double, keys::stroke_width>(sym, feature, common_.vars_);
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_);
}
box2d<double> clipping_extent = common_.query_extent_;
if (clip)
{
double pad_per_pixel = static_cast<double>(common_.query_extent_.width()/common_.width_);
double pixels = std::ceil(std::max(stroke_width / 2.0 + std::fabs(offset),
(std::fabs(offset) * offset_converter_default_threshold)));
double padding = pad_per_pixel * pixels * common_.scale_factor_;
clipping_extent.pad(padding);
}
// to avoid the complexity of using an agg pattern filter instead
// we create a line_symbolizer in order to fake the pattern
line_symbolizer line;
put<value_double>(line, keys::stroke_width, value_double(stroke_width));
// TODO: really should pass the offset to the fake line too, but
// this wasn't present in the previous version and makes the test
// fail - in this case, probably the test should be updated.
//put<value_double>(line, keys::offset, value_double(offset));
put<value_double>(line, keys::simplify_tolerance, value_double(simplify_tolerance));
put<value_double>(line, keys::smooth, value_double(smooth));
using vertex_converter_type = vertex_converter<clip_line_tag, transform_tag,
affine_transform_tag,
simplify_tag,smooth_tag,
offset_transform_tag,stroke_tag>;
vertex_converter_type converter(clipping_extent,line,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.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
converter.set<stroke_tag>(); //always stroke
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type,grid_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());
// render id
ren.color(color_type(feature.id()));
agg::render_scanlines(*ras_ptr, sl, ren);
// add feature properties to grid cache
pixmap_.add_feature(feature);
}
void agg_renderer<T0,T1>::process(line_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
color const& col = get<color, keys::stroke>(sym, feature, common_.vars_);
unsigned r=col.red();
unsigned g=col.green();
unsigned b=col.blue();
unsigned a=col.alpha();
double gamma = get<value_double, keys::stroke_gamma>(sym, feature, common_.vars_);
gamma_method_enum gamma_method = get<gamma_method_enum, keys::stroke_gamma_method>(sym, feature, common_.vars_);
ras_ptr->reset();
if (gamma != gamma_ || gamma_method != gamma_method_)
{
set_gamma_method(ras_ptr, gamma, gamma_method);
gamma_method_ = gamma_method;
gamma_ = gamma;
}
agg::rendering_buffer buf(current_buffer_->bytes(),current_buffer_->width(),current_buffer_->height(), current_buffer_->row_size());
using color_type = agg::rgba8;
using order_type = agg::order_rgba;
using blender_type = agg::comp_op_adaptor_rgba_pre<color_type, order_type>; // comp blender
using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
using renderer_base = agg::renderer_base<pixfmt_comp_type>;
pixfmt_comp_type pixf(buf);
pixf.comp_op(static_cast<agg::comp_op_e>(get<composite_mode_e, keys::comp_op>(sym, feature, common_.vars_)));
renderer_base renb(pixf);
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_);
box2d<double> clip_box = clipping_extent(common_);
value_bool clip = get<value_bool, keys::clip>(sym, feature, common_.vars_);
value_double width = get<value_double, keys::stroke_width>(sym, feature, common_.vars_);
value_double opacity = get<value_double,keys::stroke_opacity>(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_);
line_rasterizer_enum rasterizer_e = get<line_rasterizer_enum, keys::line_rasterizer>(sym, feature, common_.vars_);
if (clip)
{
double padding = static_cast<double>(common_.query_extent_.width()/pixmap_.width());
double half_stroke = 0.5 * width;
if (half_stroke > 1)
{
padding *= half_stroke;
}
if (std::fabs(offset) > 0)
{
padding *= std::fabs(offset) * 1.2;
}
padding *= common_.scale_factor_;
clip_box.pad(padding);
// debugging
//box2d<double> inverse = query_extent_;
//inverse.pad(-padding);
//draw_geo_extent(inverse,mapnik::color("red"));
}
if (rasterizer_e == RASTERIZER_FAST)
{
using renderer_type = agg::renderer_outline_aa<renderer_base>;
using rasterizer_type = agg::rasterizer_outline_aa<renderer_type>;
agg::line_profile_aa profile(width * common_.scale_factor_, agg::gamma_power(gamma));
renderer_type ren(renb, profile);
ren.color(agg::rgba8_pre(r, g, b, int(a * opacity)));
rasterizer_type ras(ren);
set_join_caps_aa(sym, ras, feature, common_.vars_);
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(clip_box,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());
}
else
{
using vertex_converter_type = vertex_converter<clip_line_tag, transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag,
dash_tag, stroke_tag>;
vertex_converter_type converter(clip_box, 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
if (has_key(sym, keys::stroke_dasharray))
converter.set<dash_tag>();
converter.set<stroke_tag>(); //always stroke
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());
using renderer_type = agg::renderer_scanline_aa_solid<renderer_base>;
renderer_type ren(renb);
ren.color(agg::rgba8_pre(r, g, b, int(a * opacity)));
agg::scanline_u8 sl;
ras_ptr->filling_rule(agg::fill_non_zero);
agg::render_scanlines(*ras_ptr, sl, ren);
}
}
void render_point_symbolizer(point_symbolizer const &sym,
mapnik::feature_impl &feature,
proj_transform const &prj_trans,
RendererType &common,
F render_marker)
{
std::string filename = get<std::string>(sym, keys::file, feature, common.vars_);
boost::optional<mapnik::marker_ptr> marker = filename.empty()
? std::make_shared<mapnik::marker>()
: marker_cache::instance().find(filename, true);
if (marker)
{
double opacity = get<double>(sym,keys::opacity,feature, common.vars_, 1.0);
bool allow_overlap = get<bool>(sym, keys::allow_overlap, feature, common.vars_, false);
bool ignore_placement = get<bool>(sym, keys::ignore_placement, feature, common.vars_, false);
point_placement_enum placement= get<point_placement_enum>(sym, keys::point_placement_type, feature, common.vars_, CENTROID_POINT_PLACEMENT);
box2d<double> const& bbox = (*marker)->bounding_box();
coord2d center = bbox.center();
agg::trans_affine tr;
auto image_transform = get_optional<transform_type>(sym, keys::image_transform);
if (image_transform) evaluate_transform(tr, feature, common.vars_, *image_transform);
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine recenter_tr = recenter * tr;
box2d<double> label_ext = bbox * recenter_tr * agg::trans_affine_scaling(common.scale_factor_);
for (std::size_t i=0; i<feature.num_geometries(); ++i)
{
geometry_type const& geom = feature.get_geometry(i);
double x;
double y;
double z=0;
if (placement == CENTROID_POINT_PLACEMENT)
{
if (!label::centroid(geom, x, y))
return;
}
else
{
if (!label::interior_position(geom ,x, y))
return;
}
prj_trans.backward(x,y,z);
common.t_.forward(&x,&y);
label_ext.re_center(x,y);
if (allow_overlap ||
common.detector_->has_placement(label_ext))
{
render_marker(pixel_position(x, y),
**marker,
tr,
opacity);
if (!ignore_placement)
common.detector_->insert(label_ext);
}
}
}
}
void agg_renderer<T>::process(building_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
typedef coord_transform<CoordTransform,geometry_type> path_type;
typedef agg::renderer_base<agg::pixfmt_rgba32> ren_base;
typedef agg::renderer_scanline_aa_solid<ren_base> renderer;
agg::rendering_buffer buf(current_buffer_->raw_data(),width_,height_, width_ * 4);
agg::pixfmt_rgba32 pixf(buf);
ren_base renb(pixf);
color const& fill_ = sym.get_fill();
unsigned r=fill_.red();
unsigned g=fill_.green();
unsigned b=fill_.blue();
unsigned a=fill_.alpha();
renderer ren(renb);
agg::scanline_u8 sl;
ras_ptr->reset();
ras_ptr->gamma(agg::gamma_power());
double height = 0.0;
expression_ptr height_expr = sym.height();
if (height_expr)
{
value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature), *height_expr);
height = result.to_double() * scale_factor_;
}
for (unsigned i=0;i<feature.num_geometries();++i)
{
geometry_type const& geom = feature.get_geometry(i);
if (geom.size() > 2)
{
boost::scoped_ptr<geometry_type> frame(new geometry_type(LineString));
boost::scoped_ptr<geometry_type> roof(new geometry_type(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 || cm == SEG_CLOSE)
{
frame->line_to(x,y);
face_segments.push_back(segment_t(x0,y0,x,y));
}
x0 = x;
y0 = y;
}
std::sort(face_segments.begin(),face_segments.end(), y_order);
std::deque<segment_t>::const_iterator itr=face_segments.begin();
std::deque<segment_t>::const_iterator end=face_segments.end();
for (; itr!=end; ++itr)
{
boost::scoped_ptr<geometry_type> faces(new geometry_type(Polygon));
faces->move_to(itr->get<0>(),itr->get<1>());
faces->line_to(itr->get<2>(),itr->get<3>());
faces->line_to(itr->get<2>(),itr->get<3>() + height);
faces->line_to(itr->get<0>(),itr->get<1>() + height);
path_type faces_path (t_,*faces,prj_trans);
ras_ptr->add_path(faces_path);
ren.color(agg::rgba8(int(r*0.8), int(g*0.8), int(b*0.8), int(a * sym.get_opacity())));
agg::render_scanlines(*ras_ptr, sl, ren);
ras_ptr->reset();
//
frame->move_to(itr->get<0>(),itr->get<1>());
frame->line_to(itr->get<0>(),itr->get<1>()+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 || cm == SEG_CLOSE)
{
frame->line_to(x,y+height);
roof->line_to(x,y+height);
}
}
path_type path(t_,*frame,prj_trans);
agg::conv_stroke<path_type> stroke(path);
stroke.width(scale_factor_);
ras_ptr->add_path(stroke);
ren.color(agg::rgba8(int(r*0.8), int(g*0.8), int(b*0.8), int(a * sym.get_opacity())));
agg::render_scanlines(*ras_ptr, sl, ren);
ras_ptr->reset();
path_type roof_path (t_,*roof,prj_trans);
ras_ptr->add_path(roof_path);
ren.color(agg::rgba8(r, g, b, int(a * sym.get_opacity())));
agg::render_scanlines(*ras_ptr, sl, ren);
}
}
}
void render_point_symbolizer(point_symbolizer const &sym,
mapnik::feature_impl &feature,
proj_transform const &prj_trans,
RendererType &common,
F render_marker)
{
std::string filename = get<std::string,keys::file>(sym,feature, common.vars_);
std::shared_ptr<mapnik::marker const> mark = filename.empty()
? std::make_shared<mapnik::marker const>(mapnik::marker_rgba8())
: marker_cache::instance().find(filename, true);
if (!mark->is<mapnik::marker_null>())
{
value_double opacity = get<value_double,keys::opacity>(sym, feature, common.vars_);
value_bool allow_overlap = get<value_bool, keys::allow_overlap>(sym, feature, common.vars_);
value_bool ignore_placement = get<value_bool, keys::ignore_placement>(sym, feature, common.vars_);
point_placement_enum placement= get<point_placement_enum, keys::point_placement_type>(sym, feature, common.vars_);
box2d<double> const& bbox = mark->bounding_box();
coord2d center = bbox.center();
agg::trans_affine tr;
auto image_transform = get_optional<transform_type>(sym, keys::image_transform);
if (image_transform) evaluate_transform(tr, feature, common.vars_, *image_transform, common.scale_factor_);
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine recenter_tr = recenter * tr;
box2d<double> label_ext = bbox * recenter_tr * agg::trans_affine_scaling(common.scale_factor_);
mapnik::geometry::geometry<double> const& geometry = feature.get_geometry();
mapnik::geometry::point<double> pt;
geometry::geometry_types type = geometry::geometry_type(geometry);
if (placement == CENTROID_POINT_PLACEMENT ||
type == geometry::geometry_types::Point ||
type == geometry::geometry_types::MultiPoint)
{
if (!geometry::centroid(geometry, pt)) return;
}
else if (type == mapnik::geometry::geometry_types::Polygon)
{
auto const& poly = mapnik::util::get<geometry::polygon<double> >(geometry);
geometry::polygon_vertex_adapter<double> va(poly);
if (!label::interior_position(va ,pt.x, pt.y))
return;
}
else
{
MAPNIK_LOG_WARN(point_symbolizer) << "TODO: unhandled geometry type for point symbolizer";
return;
}
double x = pt.x;
double y = pt.y;
double z = 0;
prj_trans.backward(x,y,z);
common.t_.forward(&x,&y);
label_ext.re_center(x,y);
if (allow_overlap ||
common.detector_->has_placement(label_ext))
{
render_marker(pixel_position(x, y),
*mark,
tr,
opacity);
if (!ignore_placement)
common.detector_->insert(label_ext);
}
}
}
void agg_renderer<T>::process(point_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<mapnik::marker_ptr> marker;
if ( !filename.empty() )
{
marker = marker_cache::instance()->find(filename, true);
}
else
{
marker.reset(boost::make_shared<mapnik::marker>());
}
if (marker)
{
box2d<double> const& bbox = (*marker)->bounding_box();
coord2d center = bbox.center();
agg::trans_affine tr;
evaluate_transform(tr, feature, sym.get_image_transform());
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine recenter_tr = recenter * tr;
box2d<double> label_ext = bbox * recenter_tr;
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)
{
if (!label::centroid(geom, x, y))
return;
}
else
{
if (!label::interior_position(geom ,x, y))
return;
}
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, y),
**marker,
tr,
sym.get_opacity(),
sym.comp_op());
if (!sym.get_ignore_placement())
detector_->insert(label_ext);
}
}
}
}
void grid_renderer<T>::process(line_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>;
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();
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_);
}
box2d<double> clipping_extent = common_.query_extent_;
bool clip = get<value_bool>(sym, keys::clip, feature, common_.vars_, false);
double width = get<value_double>(sym, keys::stroke_width, feature, common_.vars_,1.0);
double offset = get<value_double>(sym, keys::offset, feature, common_.vars_,0.0);
double simplify_tolerance = get<value_double>(sym, keys::simplify_tolerance, feature, common_.vars_,0.0);
double smooth = get<value_double>(sym, keys::smooth, feature, common_.vars_,false);
bool has_dash = has_key(sym, keys::stroke_dasharray);
if (clip)
{
double padding = (double)(common_.query_extent_.width()/pixmap_.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,
dash_tag, stroke_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
if (has_dash) converter.set<dash_tag>();
converter.set<stroke_tag>(); //always stroke
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type, grid_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());
// render id
ren.color(color_type(feature.id()));
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);
}
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);
std::shared_ptr<mapnik::marker const> marker = mapnik::marker_cache::instance().find(filename,true);
if (marker->is<mapnik::marker_null>()) 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;
using apply_local_alignment = detail::apply_local_alignment;
apply_local_alignment apply(common_.t_, prj_trans, clip_box, x0, y0);
util::apply_visitor(geometry::vertex_processor<apply_local_alignment>(apply), feature.get_geometry());
offset_x = std::abs(clip_box.width() - x0);
offset_y = std::abs(clip_box.height() - y0);
}
util::apply_visitor(cairo_renderer_process_visitor_p(context_, image_tr, offset_x, offset_y, opacity), *marker);
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_); }
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>(); //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
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());
// fill polygon
context_.set_fill_rule(CAIRO_FILL_RULE_EVEN_ODD);
context_.fill();
}
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_->bytes(),current_buffer_->width(),current_buffer_->height(),current_buffer_->row_size());
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);
ren.color(agg::rgba8_pre(fill.red(), fill.green(), fill.blue(), int(fill.alpha() * opacity)));
using render_dot_symbolizer_type = detail::render_dot_symbolizer<rasterizer, renderer_type, renderer_common, proj_transform>;
render_dot_symbolizer_type apply(rx, ry, *ras_ptr, ren, common_, prj_trans);
mapnik::util::apply_visitor(geometry::vertex_processor<render_dot_symbolizer_type>(apply), feature.get_geometry());
}
void grid_renderer<T>::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;
mapnik::marker const& mark = marker_cache::instance().find(filename, true);
if (mark.is<mapnik::marker_null>()) return;
if (!mark.is<mapnik::marker_rgba8>())
{
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Only images (not '" << filename << "') are supported in the line_pattern_symbolizer";
return;
}
ras_ptr->reset();
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_);
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,smooth_tag>;
vertex_converter_type converter(common_.query_extent_,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
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type, grid_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());
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>;
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);
// 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);
}
