/***************************************************************************** * * 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 * *****************************************************************************/ // mapnik #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include // boost #include // agg #include "agg_trans_affine.h" namespace mapnik { template grid_renderer::grid_renderer(Map const& m, T & pixmap, double scale_factor, unsigned offset_x, unsigned offset_y) : feature_style_processor(m, scale_factor), pixmap_(pixmap), width_(pixmap_.width()), height_(pixmap_.height()), scale_factor_(scale_factor), // NOTE: can change this to m dims instead of pixmap_ if render-time // resolution support is dropped from grid_renderer python interface t_(pixmap_.width(),pixmap_.height(),m.get_current_extent(),offset_x,offset_y), font_engine_(), font_manager_(font_engine_), detector_(std::make_shared(box2d(-m.buffer_size(), -m.buffer_size(), m.width() + m.buffer_size() ,m.height() + m.buffer_size()))), ras_ptr(new grid_rasterizer) { setup(m); } template grid_renderer::grid_renderer(Map const& m, request const& req, T & pixmap, double scale_factor, unsigned offset_x, unsigned offset_y) : feature_style_processor(m, scale_factor), pixmap_(pixmap), width_(pixmap_.width()), height_(pixmap_.height()), scale_factor_(scale_factor), // NOTE: can change this to m dims instead of pixmap_ if render-time // resolution support is dropped from grid_renderer python interface t_(pixmap_.width(),pixmap_.height(),req.extent(),offset_x,offset_y), font_engine_(), font_manager_(font_engine_), detector_(std::make_shared(box2d(-req.buffer_size(), -req.buffer_size(), req.width() + req.buffer_size() ,req.height() + req.buffer_size()))), ras_ptr(new grid_rasterizer) { setup(m); } template void grid_renderer::setup(Map const& m) { MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: Scale=" << m.scale(); // nothing to do for grids yet on setup } template grid_renderer::~grid_renderer() {} template void grid_renderer::start_map_processing(Map const& m) { MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: Start map processing bbox=" << m.get_current_extent(); ras_ptr->clip_box(0,0,width_,height_); } template void grid_renderer::end_map_processing(Map const& /*m*/) { MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: End map processing"; } template void grid_renderer::start_layer_processing(layer const& lay, box2d const& query_extent) { MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: Start processing layer=" << lay.name(); MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: datasource=" << lay.datasource().get(); MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: query_extent = " << query_extent; if (lay.clear_label_cache()) { detector_->clear(); } query_extent_ = query_extent; boost::optional > const& maximum_extent = lay.maximum_extent(); if (maximum_extent) { query_extent_.clip(*maximum_extent); } } template void grid_renderer::end_layer_processing(layer const&) { MAPNIK_LOG_DEBUG(grid_renderer) << "grid_renderer: End layer processing"; } template void grid_renderer::render_marker(mapnik::feature_impl & feature, unsigned int step, pixel_position const& pos, marker const& marker, agg::trans_affine const& tr, double opacity, composite_mode_e /*comp_op*/) { if (marker.is_vector()) { typedef typename grid_renderer_base_type::pixfmt_type pixfmt_type; typedef agg::renderer_scanline_bin_solid renderer_type; agg::scanline_bin sl; grid_rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_); pixfmt_type pixf(buf); grid_renderer_base_type renb(pixf); renderer_type ren(renb); ras_ptr->reset(); box2d const& bbox = (*marker.get_vector_data())->bounding_box(); coord c = bbox.center(); // center the svg marker on '0,0' agg::trans_affine mtx = agg::trans_affine_translation(-c.x,-c.y); // apply symbol transformation to get to map space mtx *= tr; mtx *= agg::trans_affine_scaling(scale_factor_*(1.0/step)); // render the marker at the center of the marker box mtx.translate(pos.x, pos.y); using namespace mapnik::svg; vertex_stl_adapter stl_storage((*marker.get_vector_data())->source()); svg_path_adapter svg_path(stl_storage); svg_renderer_agg, renderer_type, pixfmt_type> svg_renderer(svg_path, (*marker.get_vector_data())->attributes()); svg_renderer.render_id(*ras_ptr, sl, renb, feature.id(), mtx, opacity, bbox); } else { image_data_32 const& data = **marker.get_bitmap_data(); double width = data.width(); double height = data.height(); double cx = 0.5 * width; double cy = 0.5 * height; if (step == 1 && (std::fabs(1.0 - scale_factor_) < 0.001 && tr.is_identity())) { // TODO - support opacity pixmap_.set_rectangle(feature.id(), data, boost::math::iround(pos.x - cx), boost::math::iround(pos.y - cy)); } else { // TODO - remove support for step != or add support for agg scaling with opacity double ratio = (1.0/step); image_data_32 target(ratio * data.width(), ratio * data.height()); mapnik::scale_image_agg(target, data, SCALING_NEAR, ratio, ratio, 0.0, 0.0, 1.0); // TODO: is 1.0 a valid default here, and do we even care in grid_renderer what the image looks like? pixmap_.set_rectangle(feature.id(), target, boost::math::iround(pos.x - cx), boost::math::iround(pos.y - cy)); } } pixmap_.add_feature(feature); } template class grid_renderer; }