220 lines
6.7 KiB
C++
220 lines
6.7 KiB
C++
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#include <mapnik.hpp>
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#include <iostream>
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using namespace mapnik;
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int main ( int argc , char** argv)
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{
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if (argc != 2)
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{
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std::cout << "usage: ./rundemo <plugins_dir>\n";
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return EXIT_SUCCESS;
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}
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std::cout << " running demo ... \n";
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datasource_cache::instance()->register_datasources(argv[1]);
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freetype_engine::instance()->register_font("/usr/share/fonts/bitstream-vera/Vera.ttf");
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Map m(800,600);
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m.setBackground(color_factory::from_string("white"));
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// create styles
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// Provinces (polygon)
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feature_type_style provpoly_style;
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rule_type provpoly_rule_on;
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provpoly_rule_on.set_filter(create_filter("[NAME_EN] = 'Ontario'"));
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provpoly_rule_on.append(polygon_symbolizer(Color(250, 190, 183)));
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provpoly_style.add_rule(provpoly_rule_on);
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rule_type provpoly_rule_qc;
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provpoly_rule_qc.set_filter(create_filter("[NAME_EN] = 'Quebec'"));
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provpoly_rule_qc.append(polygon_symbolizer(Color(217, 235, 203)));
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provpoly_style.add_rule(provpoly_rule_qc);
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m.insert_style("provinces",provpoly_style);
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// Provinces (polyline)
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feature_type_style provlines_style;
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stroke provlines_stk (Color(0,0,0),1.0);
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provlines_stk.add_dash(8, 4);
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provlines_stk.add_dash(2, 2);
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provlines_stk.add_dash(2, 2);
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rule_type provlines_rule;
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provlines_rule.append(line_symbolizer(provlines_stk));
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provlines_style.add_rule(provlines_rule);
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m.insert_style("provlines",provlines_style);
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// Drainage
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feature_type_style qcdrain_style;
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rule_type qcdrain_rule;
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qcdrain_rule.set_filter(create_filter("[HYC] = 8"));
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qcdrain_rule.append(polygon_symbolizer(Color(153, 204, 255)));
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qcdrain_style.add_rule(qcdrain_rule);
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m.insert_style("drainage",qcdrain_style);
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// Roads 3 and 4 (The "grey" roads)
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feature_type_style roads34_style;
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rule_type roads34_rule;
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roads34_rule.set_filter(create_filter("[CLASS] = 3 or [CLASS] = 4"));
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stroke roads34_rule_stk(Color(171,158,137),2.0);
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roads34_rule_stk.set_line_cap(ROUND_CAP);
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roads34_rule_stk.set_line_join(ROUND_JOIN);
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roads34_rule.append(line_symbolizer(roads34_rule_stk));
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roads34_style.add_rule(roads34_rule);
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m.insert_style("smallroads",roads34_style);
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// Roads 2 (The thin yellow ones)
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feature_type_style roads2_style_1;
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rule_type roads2_rule_1;
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roads2_rule_1.set_filter(create_filter("[CLASS] = 2"));
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stroke roads2_rule_stk_1(Color(171,158,137),4.0);
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roads2_rule_stk_1.set_line_cap(ROUND_CAP);
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roads2_rule_stk_1.set_line_join(ROUND_JOIN);
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roads2_rule_1.append(line_symbolizer(roads2_rule_stk_1));
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roads2_style_1.add_rule(roads2_rule_1);
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m.insert_style("road-border", roads2_style_1);
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feature_type_style roads2_style_2;
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rule_type roads2_rule_2;
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roads2_rule_2.set_filter(create_filter("[CLASS] = 2"));
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stroke roads2_rule_stk_2(Color(255,250,115),2.0);
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roads2_rule_stk_2.set_line_cap(ROUND_CAP);
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roads2_rule_stk_2.set_line_join(ROUND_JOIN);
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roads2_rule_2.append(line_symbolizer(roads2_rule_stk_2));
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roads2_style_2.add_rule(roads2_rule_2);
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m.insert_style("road-fill", roads2_style_2);
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// Roads 1 (The big orange ones, the highways)
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feature_type_style roads1_style_1;
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rule_type roads1_rule_1;
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roads1_rule_1.set_filter(create_filter("[CLASS] = 1"));
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stroke roads1_rule_stk_1(Color(188,149,28),7.0);
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roads1_rule_stk_1.set_line_cap(ROUND_CAP);
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roads1_rule_stk_1.set_line_join(ROUND_JOIN);
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roads1_rule_1.append(line_symbolizer(roads1_rule_stk_1));
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roads1_style_1.add_rule(roads1_rule_1);
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m.insert_style("highway-border", roads1_style_1);
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feature_type_style roads1_style_2;
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rule_type roads1_rule_2;
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roads1_rule_2.set_filter(create_filter("[CLASS] = 1"));
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stroke roads1_rule_stk_2(Color(242,191,36),5.0);
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roads1_rule_stk_2.set_line_cap(ROUND_CAP);
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roads1_rule_stk_2.set_line_join(ROUND_JOIN);
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roads1_rule_2.append(line_symbolizer(roads1_rule_stk_2));
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roads1_style_2.add_rule(roads1_rule_2);
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m.insert_style("highway-fill", roads1_style_2);
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// Populated Places
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feature_type_style popplaces_style;
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rule_type popplaces_rule;
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text_symbolizer popplaces_text_symbolizer("GEONAME",10,Color(0,0,0));
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popplaces_text_symbolizer.set_halo_fill(Color(255,255,200));
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popplaces_text_symbolizer.set_halo_radius(1);
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popplaces_rule.append(popplaces_text_symbolizer);
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popplaces_style.add_rule(popplaces_rule);
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m.insert_style("popplaces",popplaces_style );
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// Layers
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// Provincial polygons
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{
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parameters p;
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p["name"]="Provinces";
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p["type"]="shape";
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p["file"]="../data/boundaries";
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Layer lyr(p);
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lyr.add_style("provinces");
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m.addLayer(lyr);
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}
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// Drainage
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{
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parameters p;
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p["name"]="Quebec Hydrography";
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p["type"]="shape";
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p["file"]="../data/qcdrainage";
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Layer lyr(p);
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lyr.add_style("drainage");
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m.addLayer(lyr);
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}
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{
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parameters p;
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p["name"]="Ontario Hydrography";
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p["type"]="shape";
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p["file"]="../data/ontdrainage";
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Layer lyr(p);
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lyr.add_style("drainage");
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m.addLayer(lyr);
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}
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// Provincial boundaries
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{
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parameters p;
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p["name"]="Provincial borders";
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p["type"]="shape";
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p["file"]="../data/boundaries_l";
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Layer lyr(p);
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lyr.add_style("provlines");
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m.addLayer(lyr);
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}
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// Roads
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{
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parameters p;
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p["name"]="Roads";
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p["type"]="shape";
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p["file"]="../data/roads";
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Layer lyr(p);
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lyr.add_style("smallroads");
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lyr.add_style("road-border");
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lyr.add_style("road-fill");
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lyr.add_style("highway-border");
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lyr.add_style("highway-fill");
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m.addLayer(lyr);
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}
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// popplaces
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{
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parameters p;
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p["name"]="Populated Places";
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p["type"]="shape";
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p["file"]="../data/popplaces";
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Layer lyr(p);
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lyr.add_style("popplaces");
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m.addLayer(lyr);
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}
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m.zoomToBox(Envelope<double>(1405120.04127408,-247003.813399447,1706357.31328276,-25098.593149577));
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Image32 buf(m.getWidth(),m.getHeight());
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agg_renderer<Image32> ren(m,buf);
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ren.apply();
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ImageUtils::save_to_file("demo.jpg","jpeg",buf);
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ImageUtils::save_to_file("demo.png","png",buf);
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std::cout << "Two maps have been rendered in the current directory:\n"
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"- demo.jpg\n"
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"- demo.png\n"
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"Have a look!\n";
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return EXIT_SUCCESS;
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}
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