void operator () (building_symbolizer const& sym) { expression_ptr const& height_expr = sym.height(); if (height_expr) { boost::apply_visitor(f_attr,*height_expr); } collect_transform(sym.get_transform()); }
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 agg_renderer<T>::process(building_symbolizer const& sym, Feature const& feature, proj_transform const& prj_trans) { typedef coord_transform2<CoordTransform,geometry_type> path_type; typedef coord_transform3<CoordTransform,geometry_type> path_type_roof; typedef agg::renderer_base<agg::pixfmt_rgba32_plain> ren_base; typedef agg::renderer_scanline_aa_solid<ren_base> renderer; agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4); agg::pixfmt_rgba32_plain 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_linear()); double height = sym.height() * scale_factor_; for (unsigned i=0;i<feature.num_geometries();++i) { geometry_type const& geom = feature.get_geometry(i); if (geom.num_points() > 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); unsigned cm = geom.vertex(&x0,&y0); for (unsigned j=1;j<geom.num_points();++j) { double x(0); double y(0); cm = geom.vertex(&x,&y); if (cm == SEG_MOVETO) { frame->move_to(x,y); } else if (cm == SEG_LINETO) { frame->line_to(x,y); face_segments.push_back(segment_t(x0,y0,x,y)); } x0 = x; y0 = y; } std::sort(face_segments.begin(),face_segments.end(), y_order); std::deque<segment_t>::const_iterator itr=face_segments.begin(); for (;itr!=face_segments.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 j=0;j<geom.num_points();++j) { double x,y; unsigned cm = geom.vertex(&x,&y); if (cm == SEG_MOVETO) { frame->move_to(x,y+height); roof->move_to(x,y+height); } else if (cm == SEG_LINETO) { frame->line_to(x,y+height); roof->line_to(x,y+height); } } path_type path(t_,*frame,prj_trans); agg::conv_stroke<path_type> stroke(path); ras_ptr->add_path(stroke); ren.color(agg::rgba8(int(r*0.8), int(g*0.8), int(b*0.8), int(255 * 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); } } }