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 render_vector_marker(cairo_context & context, svg::svg_path_adapter & svg_path,
agg::pod_bvector<svg::path_attributes> const & attributes,
box2d<double> const& bbox, agg::trans_affine const& tr,
double opacity)
{
using namespace mapnik::svg;
agg::trans_affine transform;
for(unsigned i = 0; i < attributes.size(); ++i)
{
mapnik::svg::path_attributes const& attr = attributes[i];
if (!attr.visibility_flag)
continue;
cairo_save_restore guard(context);
transform = attr.transform;
transform *= tr;
// TODO - this 'is_valid' check is not used in the AGG renderer and also
// appears to lead to bogus results with
// tests/data/good_maps/markers_symbolizer_lines_file.xml
//if (transform.is_valid() && !transform.is_identity())
if (!transform.is_identity())
{
double m[6];
transform.store_to(m);
cairo_matrix_t matrix;
cairo_matrix_init(&matrix,m[0],m[1],m[2],m[3],m[4],m[5]);
context.transform(matrix);
}
if (attr.fill_flag || attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
{
context.add_agg_path(svg_path,attr.index);
if (attr.even_odd_flag)
{
context.set_fill_rule(CAIRO_FILL_RULE_EVEN_ODD);
}
else
{
context.set_fill_rule(CAIRO_FILL_RULE_WINDING);
}
if(attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
{
cairo_gradient g(attr.fill_gradient,attr.fill_opacity * attr.opacity * opacity);
context.set_gradient(g,bbox);
context.fill();
}
else if(attr.fill_flag)
{
double fill_opacity = attr.fill_opacity * attr.opacity * opacity * attr.fill_color.opacity();
context.set_color(attr.fill_color.r/255.0,attr.fill_color.g/255.0,
attr.fill_color.b/255.0, fill_opacity);
context.fill();
}
}
if (attr.stroke_gradient.get_gradient_type() != NO_GRADIENT || attr.stroke_flag)
{
context.add_agg_path(svg_path,attr.index);
if(attr.stroke_gradient.get_gradient_type() != NO_GRADIENT)
{
context.set_line_width(attr.stroke_width);
context.set_line_cap(line_cap_enum(attr.line_cap));
context.set_line_join(line_join_enum(attr.line_join));
context.set_miter_limit(attr.miter_limit);
cairo_gradient g(attr.stroke_gradient,attr.fill_opacity * attr.opacity * opacity);
context.set_gradient(g,bbox);
context.stroke();
}
else if (attr.stroke_flag)
{
double stroke_opacity = attr.stroke_opacity * attr.opacity * opacity * attr.stroke_color.opacity();
context.set_color(attr.stroke_color.r/255.0,attr.stroke_color.g/255.0,
attr.stroke_color.b/255.0, stroke_opacity);
context.set_line_width(attr.stroke_width);
context.set_line_cap(line_cap_enum(attr.line_cap));
context.set_line_join(line_join_enum(attr.line_join));
context.set_miter_limit(attr.miter_limit);
context.stroke();
}
}
}
}