/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2011 Artem Pavlenko * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * *****************************************************************************/ //$Id$ // mapnik #include #include #include #include // agg #include "agg_basics.h" #include "agg_rendering_buffer.h" #include "agg_pixfmt_rgba.h" #include "agg_rasterizer_scanline_aa.h" #include "agg_scanline_u.h" #include "agg_renderer_scanline.h" #include "agg_scanline_p.h" #include "agg_conv_stroke.h" #include "agg_conv_dash.h" #include "agg_renderer_outline_aa.h" #include "agg_rasterizer_outline_aa.h" #include "agg_conv_clip_polyline.h" // stl #include namespace mapnik { template void agg_renderer::process(line_symbolizer const& sym, mapnik::feature_ptr const& feature, proj_transform const& prj_trans) { typedef agg::renderer_base ren_base; typedef agg::conv_clip_polyline clipped_geometry_type; typedef coord_transform2 path_type; stroke const& stroke_ = sym.get_stroke(); color const& col = stroke_.get_color(); unsigned r=col.red(); unsigned g=col.green(); unsigned b=col.blue(); unsigned a=col.alpha(); agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4); agg::pixfmt_rgba32_plain pixf(buf); box2d ext = query_extent_ * 1.1; if (sym.get_rasterizer() == RASTERIZER_FAST) { typedef agg::renderer_outline_aa renderer_type; typedef agg::rasterizer_outline_aa rasterizer_type; agg::line_profile_aa profile; profile.width(stroke_.get_width() * scale_factor_); ren_base base_ren(pixf); renderer_type ren(base_ren, profile); ren.color(agg::rgba8(r, g, b, int(a*stroke_.get_opacity()))); //ren.clip_box(0,0,width_,height_); rasterizer_type ras(ren); ras.line_join(agg::outline_miter_accurate_join); ras.round_cap(true); for (unsigned i=0;inum_geometries();++i) { geometry_type & geom = feature->get_geometry(i); if (geom.num_points() > 1) { clipped_geometry_type clipped(geom); clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy()); path_type path(t_,clipped,prj_trans); ras.add_path(path); } } } else { typedef agg::renderer_scanline_aa_solid renderer; agg::scanline_p8 sl; ren_base renb(pixf); renderer ren(renb); ras_ptr->reset(); set_gamma_method(stroke_, ras_ptr); //metawriter_with_properties writer = sym.get_metawriter(); for (unsigned i=0;inum_geometries();++i) { geometry_type & geom = feature->get_geometry(i); if (geom.num_points() > 1) { if (stroke_.has_dash()) { clipped_geometry_type clipped(geom); clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy()); path_type path(t_,clipped,prj_trans); agg::conv_dash dash(path); dash_array const& d = stroke_.get_dash_array(); dash_array::const_iterator itr = d.begin(); dash_array::const_iterator end = d.end(); for (;itr != end;++itr) { dash.add_dash(itr->first * scale_factor_, itr->second * scale_factor_); } agg::conv_stroke > stroke(dash); line_join_e join=stroke_.get_line_join(); if ( join == MITER_JOIN) stroke.generator().line_join(agg::miter_join); else if( join == MITER_REVERT_JOIN) stroke.generator().line_join(agg::miter_join); else if( join == ROUND_JOIN) stroke.generator().line_join(agg::round_join); else stroke.generator().line_join(agg::bevel_join); line_cap_e cap=stroke_.get_line_cap(); if (cap == BUTT_CAP) stroke.generator().line_cap(agg::butt_cap); else if (cap == SQUARE_CAP) stroke.generator().line_cap(agg::square_cap); else stroke.generator().line_cap(agg::round_cap); stroke.generator().miter_limit(4.0); stroke.generator().width(stroke_.get_width() * scale_factor_); ras_ptr->add_path(stroke); } else { clipped_geometry_type clipped(geom); clipped.clip_box(ext.minx(),ext.miny(),ext.maxx(),ext.maxy()); path_type path(t_,clipped,prj_trans); agg::conv_stroke stroke(path); line_join_e join=stroke_.get_line_join(); if ( join == MITER_JOIN) stroke.generator().line_join(agg::miter_join); else if( join == MITER_REVERT_JOIN) stroke.generator().line_join(agg::miter_join); else if( join == ROUND_JOIN) stroke.generator().line_join(agg::round_join); else stroke.generator().line_join(agg::bevel_join); line_cap_e cap=stroke_.get_line_cap(); if (cap == BUTT_CAP) stroke.generator().line_cap(agg::butt_cap); else if (cap == SQUARE_CAP) stroke.generator().line_cap(agg::square_cap); else stroke.generator().line_cap(agg::round_cap); stroke.generator().miter_limit(4.0); stroke.generator().width(stroke_.get_width() * scale_factor_); ras_ptr->add_path(stroke); //if (writer.first) writer.first->add_line(path, *feature, t_, writer.second); } } } ren.color(agg::rgba8(r, g, b, int(a*stroke_.get_opacity()))); agg::render_scanlines(*ras_ptr, sl, ren); } } template void agg_renderer::process(line_symbolizer const&, mapnik::feature_ptr const&, proj_transform const&); }