void render(cairo_fill_rule_t fill_rule, cairo_context & context)
{
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, common_.scale_factor_);
}
composite_mode_e comp_op = get<composite_mode_e, keys::comp_op>(sym_, feature_, common_.vars_);
cairo_save_restore guard(context);
context.set_operator(comp_op);
cairo_renderer_process_visitor_p visitor(image_tr, opacity);
cairo_surface_ptr surface(util::apply_visitor(visitor, this->marker_));
coord<double, 2> offset(0, 0);
cairo_rectangle_t pattern_surface_extent;
if (cairo_recording_surface_get_extents(surface.get(), &pattern_surface_extent))
{
offset = pattern_offset(sym_, feature_, prj_trans_, common_,
pattern_surface_extent.width, pattern_surface_extent.height);
}
cairo_pattern pattern(surface);
pattern.set_extend(CAIRO_EXTEND_REPEAT);
pattern.set_origin(-offset.x, -offset.y);
context.set_pattern(pattern);
using apply_vertex_converter_type = detail::apply_vertex_converter<VertexConverter, 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(fill_rule);
context.fill();
}
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(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 apply_markers_multi(feature_impl const& feature, attributes const& vars, Converter & converter, symbolizer_base const& sym)
{
using vertex_converter_type = Converter;
using apply_vertex_converter_type = detail::apply_vertex_converter<vertex_converter_type>;
using vertex_processor_type = geometry::vertex_processor<apply_vertex_converter_type>;
auto const& geom = feature.get_geometry();
geometry::geometry_types type = geometry::geometry_type(geom);
if (type == geometry::geometry_types::Point
|| type == geometry::geometry_types::LineString
|| type == geometry::geometry_types::Polygon)
{
apply_vertex_converter_type apply(converter);
mapnik::util::apply_visitor(vertex_processor_type(apply), geom);
}
else
{
marker_multi_policy_enum multi_policy = get<marker_multi_policy_enum, keys::markers_multipolicy>(sym, feature, vars);
marker_placement_enum placement = get<marker_placement_enum, keys::markers_placement_type>(sym, feature, vars);
if (placement == MARKER_POINT_PLACEMENT &&
multi_policy == MARKER_WHOLE_MULTI)
{
geometry::point<double> pt;
// test if centroid is contained by bounding box
if (geometry::centroid(geom, pt) && converter.disp_.args_.bbox.contains(pt.x, pt.y))
{
// unset any clipping since we're now dealing with a point
converter.template unset<clip_poly_tag>();
geometry::point_vertex_adapter<double> va(pt);
converter.apply(va);
}
}
else if ((placement == MARKER_POINT_PLACEMENT || placement == MARKER_INTERIOR_PLACEMENT) &&
multi_policy == MARKER_LARGEST_MULTI)
{
// Only apply to path with largest envelope area
// TODO: consider using true area for polygon types
if (type == geometry::geometry_types::MultiPolygon)
{
geometry::multi_polygon<double> const& multi_poly = mapnik::util::get<geometry::multi_polygon<double> >(geom);
double maxarea = 0;
geometry::polygon<double> const* largest = 0;
for (geometry::polygon<double> const& poly : multi_poly)
{
box2d<double> bbox = geometry::envelope(poly);
geometry::polygon_vertex_adapter<double> va(poly);
double area = bbox.width() * bbox.height();
if (area > maxarea)
{
maxarea = area;
largest = &poly;
}
}
if (largest)
{
geometry::polygon_vertex_adapter<double> va(*largest);
converter.apply(va);
}
}
else
{
MAPNIK_LOG_WARN(marker_symbolizer) << "TODO: if you get here -> open an issue";
}
}
else
{
if (multi_policy != MARKER_EACH_MULTI && placement != MARKER_POINT_PLACEMENT)
{
MAPNIK_LOG_WARN(marker_symbolizer) << "marker_multi_policy != 'each' has no effect with marker_placement != 'point'";
}
apply_vertex_converter_type apply(converter);
mapnik::util::apply_visitor(vertex_processor_type(apply), geom);
}
}
}
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 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 operator() (marker_svg const& marker) const
{
using color = agg::rgba8;
using order = agg::order_rgba;
using blender_type = agg::comp_op_adaptor_rgba_pre<color, order>;
using pattern_filter_type = agg::pattern_filter_bilinear_rgba8;
using pattern_type = agg::line_image_pattern<pattern_filter_type>;
using pixfmt_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
using renderer_base = agg::renderer_base<pixfmt_type>;
using renderer_type = agg::renderer_outline_image<renderer_base, pattern_type>;
using rasterizer_type = agg::rasterizer_outline_aa<renderer_type>;
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, common_.scale_factor_);
mapnik::box2d<double> const& bbox_image = marker.get_data()->bounding_box() * image_tr;
image_rgba8 image(bbox_image.width(), bbox_image.height());
render_pattern<buffer_type>(*ras_ptr_, marker, image_tr, 1.0, image);
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_);
agg::rendering_buffer buf(current_buffer_->bytes(),current_buffer_->width(),current_buffer_->height(), current_buffer_->row_size());
pixfmt_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 ren_base(pixf);
agg::pattern_filter_bilinear_rgba8 filter;
pattern_source source(image, opacity);
pattern_type pattern (filter,source);
renderer_type ren(ren_base, pattern);
double half_stroke = std::max(marker.width()/2.0,marker.height()/2.0);
int rast_clip_padding = static_cast<int>(std::round(half_stroke));
ren.clip_box(-rast_clip_padding,-rast_clip_padding,common_.width_+rast_clip_padding,common_.height_+rast_clip_padding);
rasterizer_type ras(ren);
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_);
if (clip)
{
double padding = (double)(common_.query_extent_.width()/pixmap_.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);
}
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>();
converter.set<transform_tag>(); //always transform
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform
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 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 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);
}
void operator() (marker_svg const& marker)
{
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);
mapnik::box2d<double> const& bbox_image = marker.get_data()->bounding_box() * image_tr;
mapnik::image_rgba8 image(bbox_image.width(), bbox_image.height());
render_pattern<buffer_type>(*ras_ptr_, marker, image_tr, 1.0, image);
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_);
box2d<double> clip_box = clipping_extent(common_);
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);
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);
pattern_alignment_enum alignment = get<pattern_alignment_enum, keys::alignment>(sym_, feature_, common_.vars_);
unsigned offset_x=0;
unsigned offset_y=0;
if (alignment == LOCAL_ALIGNMENT)
{
double x0 = 0;
double y0 = 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 = unsigned(current_buffer_->width() - x0);
offset_y = unsigned(current_buffer_->height() - y0);
}
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);
}
