113 lines
3 KiB
C++
113 lines
3 KiB
C++
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#ifndef SVGTOOLS_HPP
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#define SVGTOOLS_HPP
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <libnest2d.h>
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#include <libnest2d/geometries_io.hpp>
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namespace libnest2d { namespace svg {
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class SVGWriter {
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public:
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enum OrigoLocation {
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TOPLEFT,
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BOTTOMLEFT
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};
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struct Config {
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OrigoLocation origo_location;
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Coord mm_in_coord_units;
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double width, height;
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Config():
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origo_location(BOTTOMLEFT), mm_in_coord_units(1000000),
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width(500), height(500) {}
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};
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private:
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Config conf_;
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std::vector<std::string> svg_layers_;
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bool finished_ = false;
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public:
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SVGWriter(const Config& conf = Config()):
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conf_(conf) {}
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void setSize(const Box& box) {
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conf_.height = static_cast<double>(box.height()) /
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conf_.mm_in_coord_units;
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conf_.width = static_cast<double>(box.width()) /
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conf_.mm_in_coord_units;
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}
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void writeItem(const Item& item) {
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if(svg_layers_.empty()) addLayer();
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Item tsh(item.transformedShape());
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if(conf_.origo_location == BOTTOMLEFT)
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for(unsigned i = 0; i < tsh.vertexCount(); i++) {
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auto v = tsh.vertex(i);
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setY(v, -getY(v) + conf_.height*conf_.mm_in_coord_units);
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tsh.setVertex(i, v);
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}
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currentLayer() += ShapeLike::serialize<Formats::SVG>(tsh.rawShape(),
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1.0/conf_.mm_in_coord_units) + "\n";
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}
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void writePackGroup(const PackGroup& result) {
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for(auto r : result) {
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addLayer();
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for(Item& sh : r) {
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writeItem(sh);
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}
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finishLayer();
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}
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}
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void addLayer() {
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svg_layers_.emplace_back(header());
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finished_ = false;
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}
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void finishLayer() {
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currentLayer() += "\n</svg>\n";
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finished_ = true;
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}
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void save(const std::string& filepath) {
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unsigned lyrc = svg_layers_.size() > 1? 1 : 0;
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unsigned last = svg_layers_.size() > 1? svg_layers_.size() : 0;
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for(auto& lyr : svg_layers_) {
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std::fstream out(filepath + (lyrc > 0? std::to_string(lyrc) : "") +
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".svg", std::fstream::out);
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if(out.is_open()) out << lyr;
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if(lyrc == last && !finished_) out << "\n</svg>\n";
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out.flush(); out.close(); lyrc++;
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};
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}
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private:
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std::string& currentLayer() { return svg_layers_.back(); }
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const std::string header() const {
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std::string svg_header =
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R"raw(<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
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<svg height=")raw";
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svg_header += std::to_string(conf_.height) + "\" width=\"" + std::to_string(conf_.width) + "\" ";
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svg_header += R"raw(xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">)raw";
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return svg_header;
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}
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};
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}
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}
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#endif // SVGTOOLS_HPP
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