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260 lines
13 KiB
C++
260 lines
13 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2011 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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/*
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porting notes -->
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- rasterizer -> grid_rasterizer
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- current_buffer_ -> pixmap_
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- agg::rendering_buffer -> grid_renderering_buffer
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- no gamma
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- agg::scanline_bin sl
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- grid_rendering_buffer
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- agg::renderer_scanline_bin_solid
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- TODO - clamp sizes to > 4 pixels of interactivity
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- svg_renderer.render_id
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- only encode feature if placements are found:
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if (placed)
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{
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pixmap_.add_feature(feature);
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}
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*/
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// mapnik
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#include <mapnik/feature.hpp>
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#include <mapnik/grid/grid_rasterizer.hpp>
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#include <mapnik/grid/grid_renderer.hpp>
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#include <mapnik/grid/grid_renderer_base.hpp>
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#include <mapnik/grid/grid.hpp>
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#include <mapnik/grid/grid_marker_helpers.hpp>
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#include <mapnik/debug.hpp>
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#include <mapnik/geom_util.hpp>
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#include <mapnik/vertex_converters.hpp>
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#include <mapnik/marker.hpp>
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#include <mapnik/marker_cache.hpp>
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#include <mapnik/marker_helpers.hpp>
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#include <mapnik/svg/svg_renderer_agg.hpp>
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#include <mapnik/svg/svg_storage.hpp>
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#include <mapnik/svg/svg_path_adapter.hpp>
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#include <mapnik/svg/svg_path_attributes.hpp>
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#include <mapnik/markers_symbolizer.hpp>
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#include <mapnik/parse_path.hpp>
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// agg
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#include "agg_basics.h"
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#include "agg_rendering_buffer.h"
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#include "agg_rasterizer_scanline_aa.h"
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// boost
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#include <boost/optional.hpp>
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// stl
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#include <algorithm>
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namespace mapnik {
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template <typename T>
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void grid_renderer<T>::process(markers_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans)
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{
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typedef grid_rendering_buffer buf_type;
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typedef typename grid_renderer_base_type::pixfmt_type pixfmt_type;
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typedef agg::renderer_scanline_bin_solid<grid_renderer_base_type> renderer_type;
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typedef label_collision_detector4 detector_type;
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typedef boost::mpl::vector<clip_poly_tag,transform_tag,smooth_tag> conv_types;
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std::string filename = path_processor_type::evaluate(*sym.get_filename(), feature);
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if (!filename.empty())
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{
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boost::optional<marker_ptr> mark = mapnik::marker_cache::instance().find(filename, true);
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if (mark && *mark)
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{
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ras_ptr->reset();
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agg::trans_affine geom_tr;
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evaluate_transform(geom_tr, feature, sym.get_transform(), scale_factor_);
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agg::trans_affine tr = agg::trans_affine_scaling(scale_factor_*(1.0/pixmap_.get_resolution()));
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if ((*mark)->is_vector())
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{
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using namespace mapnik::svg;
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typedef agg::pod_bvector<path_attributes> svg_attribute_type;
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typedef svg_renderer_agg<svg_path_adapter,
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svg_attribute_type,
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renderer_type,
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pixfmt_type > svg_renderer_type;
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typedef vector_markers_rasterizer_dispatch_grid<buf_type,
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svg_renderer_type,
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grid_rasterizer,
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detector_type,
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mapnik::grid > dispatch_type;
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boost::optional<svg_path_ptr> const& stock_vector_marker = (*mark)->get_vector_data();
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expression_ptr const& width_expr = sym.get_width();
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expression_ptr const& height_expr = sym.get_height();
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// special case for simple ellipse markers
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// to allow for full control over rx/ry dimensions
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if (filename == "shape://ellipse"
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&& (width_expr || height_expr))
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{
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svg_storage_type marker_ellipse;
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vertex_stl_adapter<svg_path_storage> stl_storage(marker_ellipse.source());
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svg_path_adapter svg_path(stl_storage);
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// TODO - clamping to >= 4 pixels
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build_ellipse(sym, feature, marker_ellipse, svg_path);
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svg_attribute_type attributes;
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bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
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svg_renderer_type svg_renderer(svg_path, result ? attributes : (*stock_vector_marker)->attributes());
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evaluate_transform(tr, feature, sym.get_image_transform());
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box2d<double> bbox = marker_ellipse.bounding_box();
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coord2d center = bbox.center();
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agg::trans_affine_translation recenter(-center.x, -center.y);
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agg::trans_affine marker_trans = recenter * tr;
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buf_type render_buf(pixmap_.raw_data(), width_, height_, width_);
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dispatch_type rasterizer_dispatch(render_buf,
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svg_renderer,
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*ras_ptr,
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bbox,
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marker_trans,
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sym,
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*detector_,
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scale_factor_,
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feature,
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pixmap_);
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vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
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CoordTransform, proj_transform, agg::trans_affine, conv_types>
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converter(query_extent_, rasterizer_dispatch, sym,t_,prj_trans,tr,scale_factor_);
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if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
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{
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geometry_type::types type = feature.paths()[0].type();
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if (type == geometry_type::types::Polygon)
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converter.template set<clip_poly_tag>();
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// line clipping disabled due to https://github.com/mapnik/mapnik/issues/1426
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//else if (type == LineString)
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// converter.template set<clip_line_tag>();
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// don't clip if type==Point
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}
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converter.template set<transform_tag>(); //always transform
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if (sym.smooth() > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
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apply_markers_multi(feature, converter, sym);
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}
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else
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{
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box2d<double> const& bbox = (*mark)->bounding_box();
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setup_transform_scaling(tr, bbox.width(), bbox.height(), feature, sym);
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evaluate_transform(tr, feature, sym.get_image_transform());
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// TODO - clamping to >= 4 pixels
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coord2d center = bbox.center();
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agg::trans_affine_translation recenter(-center.x, -center.y);
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agg::trans_affine marker_trans = recenter * tr;
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vertex_stl_adapter<svg_path_storage> stl_storage((*stock_vector_marker)->source());
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svg_path_adapter svg_path(stl_storage);
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svg_attribute_type attributes;
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bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
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svg_renderer_type svg_renderer(svg_path, result ? attributes : (*stock_vector_marker)->attributes());
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buf_type render_buf(pixmap_.raw_data(), width_, height_, width_);
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dispatch_type rasterizer_dispatch(render_buf,
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svg_renderer,
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*ras_ptr,
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bbox,
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marker_trans,
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sym,
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*detector_,
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scale_factor_,
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feature,
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pixmap_);
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vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
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CoordTransform, proj_transform, agg::trans_affine, conv_types>
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converter(query_extent_, rasterizer_dispatch, sym,t_,prj_trans,tr,scale_factor_);
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if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
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{
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geometry_type::types type = feature.paths()[0].type();
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if (type == geometry_type::types::Polygon)
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converter.template set<clip_poly_tag>();
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// line clipping disabled due to https://github.com/mapnik/mapnik/issues/1426
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//else if (type == LineString)
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// converter.template set<clip_line_tag>();
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// don't clip if type==Point
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}
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converter.template set<transform_tag>(); //always transform
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if (sym.smooth() > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
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apply_markers_multi(feature, converter, sym);
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}
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}
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else // raster markers
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{
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setup_transform_scaling(tr, (*mark)->width(), (*mark)->height(), feature, sym);
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evaluate_transform(tr, feature, sym.get_image_transform());
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box2d<double> const& bbox = (*mark)->bounding_box();
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// - clamp sizes to > 4 pixels of interactivity
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coord2d center = bbox.center();
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agg::trans_affine_translation recenter(-center.x, -center.y);
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agg::trans_affine marker_trans = recenter * tr;
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boost::optional<mapnik::image_ptr> marker = (*mark)->get_bitmap_data();
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typedef raster_markers_rasterizer_dispatch_grid<buf_type,
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grid_rasterizer,
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pixfmt_type,
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grid_renderer_base_type,
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renderer_type,
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detector_type,
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mapnik::grid > dispatch_type;
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buf_type render_buf(pixmap_.raw_data(), width_, height_, width_);
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dispatch_type rasterizer_dispatch(render_buf,
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*ras_ptr,
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**marker,
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marker_trans,
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sym,
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*detector_,
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scale_factor_,
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feature,
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pixmap_);
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vertex_converter<box2d<double>, dispatch_type, markers_symbolizer,
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CoordTransform, proj_transform, agg::trans_affine, conv_types>
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converter(query_extent_, rasterizer_dispatch, sym,t_,prj_trans,tr,scale_factor_);
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if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
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{
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geometry_type::types type = feature.paths()[0].type();
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if (type == geometry_type::types::Polygon)
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converter.template set<clip_poly_tag>();
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// line clipping disabled due to https://github.com/mapnik/mapnik/issues/1426
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//else if (type == LineString)
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// converter.template set<clip_line_tag>();
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// don't clip if type==Point
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}
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converter.template set<transform_tag>(); //always transform
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if (sym.smooth() > 0.0) converter.template set<smooth_tag>(); // optional smooth converter
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apply_markers_multi(feature, converter, sym);
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}
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}
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}
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}
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template void grid_renderer<grid>::process(markers_symbolizer const&,
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mapnik::feature_impl &,
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proj_transform const&);
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}
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