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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| #include <string> | ||
| #include <boost/format.hpp> | ||
| #include <memory> | ||
| #include "geometry.hpp" | ||
| #include "bg_helpers.hpp" | ||
| #include "svg_writer.hpp" | ||
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|
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| using std::string; | ||
| using std::unique_ptr; | ||
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| svg_writer::svg_writer(string filename, box_type_fp bounding_box) : | ||
| output_file(filename), | ||
| bounding_box(bounding_box) | ||
| { | ||
| const coordinate_type_fp width = | ||
| (bounding_box.max_corner().x() - bounding_box.min_corner().x()) * SVG_PIX_PER_IN; | ||
| const coordinate_type_fp height = | ||
| (bounding_box.max_corner().y() - bounding_box.min_corner().y()) * SVG_PIX_PER_IN; | ||
| const coordinate_type_fp viewBox_width = | ||
| (bounding_box.max_corner().x() - bounding_box.min_corner().x()) * SVG_DOTS_PER_IN; | ||
| const coordinate_type_fp viewBox_height = | ||
| (bounding_box.max_corner().y() - bounding_box.min_corner().y()) * SVG_DOTS_PER_IN; | ||
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| //Some SVG readers does not behave well when viewBox is not specified | ||
| const string svg_dimensions = | ||
| str(boost::format("width=\"%1%\" height=\"%2%\" viewBox=\"0 0 %3% %4%\"") % width % height % viewBox_width % viewBox_height); | ||
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| mapper = unique_ptr<bg::svg_mapper<point_type_fp>> | ||
| (new bg::svg_mapper<point_type_fp>(output_file, viewBox_width, viewBox_height, svg_dimensions)); | ||
| mapper->add(bounding_box); | ||
| } | ||
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| template <typename multi_polygon_type_t> | ||
| void svg_writer::add(const multi_polygon_type_t& geometry, double opacity, bool stroke) | ||
| { | ||
| string stroke_str = stroke ? "stroke:rgb(0,0,0);stroke-width:2" : ""; | ||
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| for (const auto& poly : geometry) | ||
| { | ||
| const unsigned int r = rand() % 256; | ||
| const unsigned int g = rand() % 256; | ||
| const unsigned int b = rand() % 256; | ||
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| multi_polygon_type_t new_bounding_box; | ||
| bg::convert(bounding_box, new_bounding_box); | ||
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| mapper->map(poly & new_bounding_box, | ||
| str(boost::format("fill-opacity:%f;fill:rgb(%u,%u,%u);" + stroke_str) % | ||
| opacity % r % g % b)); | ||
| } | ||
| } | ||
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| template void svg_writer::add<multi_polygon_type_fp>(const multi_polygon_type_fp&, double, bool); | ||
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| void svg_writer::add(const multi_linestring_type_fp& mls, coordinate_type_fp width, bool stroke) { | ||
| string stroke_str = stroke ? "stroke:rgb(0,0,0);stroke-width:2" : ""; | ||
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| for (const auto& ls : mls) { | ||
| const unsigned int r = rand() % 256; | ||
| const unsigned int g = rand() % 256; | ||
| const unsigned int b = rand() % 256; | ||
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| add(ls, width, r, g, b); | ||
| } | ||
| } | ||
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| void svg_writer::add(const linestring_type_fp& path, coordinate_type_fp width, unsigned int r, unsigned int g, unsigned int b) { | ||
| // Stroke the width of the path. | ||
| mapper->map(path, | ||
| str(boost::format("stroke:rgb(%u,%u,%u);stroke-width:%f;fill:none;" | ||
| "stroke-opacity:0.5;stroke-linecap:round;stroke-linejoin:round;") % r % g % b % (width * SVG_DOTS_PER_IN))); | ||
| // Stroke the center of the path. | ||
| mapper->map(path, | ||
| "stroke:rgb(0,0,0);stroke-width:1px;fill:none;" | ||
| "stroke-opacity:1;stroke-linecap:round;stroke-linejoin:round;"); | ||
| } | ||
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| void svg_writer::add(const multi_linestring_type_fp& path, coordinate_type_fp width, unsigned int r, unsigned int g, unsigned int b) { | ||
| for (const auto& p : path) { | ||
| add(p, width, r, g, b); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| #ifndef SVG_WRITER_HPP | ||
| #define SVG_WRITER_HPP | ||
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| #include <fstream> | ||
|
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| class svg_writer { | ||
| public: | ||
| svg_writer(std::string filename, box_type_fp bounding_box); | ||
| template <typename multi_polygon_type_t> | ||
| void add(const multi_polygon_type_t& geometry, double opacity, bool stroke); | ||
| void add(const multi_linestring_type_fp& mls, coordinate_type_fp width, bool stroke); | ||
| void add(const std::vector<polygon_type_fp>& geometries, double opacity, | ||
| int r = -1, int g = -1, int b = -1); | ||
| void add(const linestring_type_fp& paths, coordinate_type_fp width, unsigned int r, unsigned int g, unsigned int b); | ||
| void add(const multi_linestring_type_fp& paths, coordinate_type_fp width, unsigned int r, unsigned int g, unsigned int b); | ||
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| protected: | ||
| std::ofstream output_file; | ||
| const box_type_fp bounding_box; | ||
| std::unique_ptr<bg::svg_mapper<point_type_fp> > mapper; | ||
| }; | ||
|
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| #endif //SVG_WRITER_HPP |