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SVGWriter.h
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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
///
/// @author Laurent Aphecetche
#ifndef O2_MCH_CONTOUR_SVGWRITER_H
#define O2_MCH_CONTOUR_SVGWRITER_H
#include "Contour.h"
#include "BBox.h"
#include <ostream>
#include <sstream>
#include "ContourCreator.h"
#include <utility>
#include <boost/format.hpp>
#include <cmath>
namespace o2
{
namespace mch
{
namespace contour
{
class SVGWriter
{
public:
SVGWriter(o2::mch::contour::BBox<double> viewingBox, int size = 1024)
: mSVGBuffer{},
mStyleBuffer{},
mWidth{size},
mHeight{static_cast<int>(std::round(size * viewingBox.height() / viewingBox.width()))},
mViewingBox{viewingBox}
{
}
template <typename T>
SVGWriter& operator<<(T a)
{
mSVGBuffer << a;
return *this;
}
void svgGroupStart(const std::string& classname)
{
mSVGBuffer << R"(<g class=")" << classname << R"(">)"
<< "\n";
}
void svgGroupEnd() { mSVGBuffer << "</g>\n"; }
void box(double x, double y, double w, double h)
{
mSVGBuffer << boost::format(R"(<rect x="%f" y="%f" width="%f" height="%f"/>)") % x % y % w % h << "\n";
}
void text(const std::string& text, double x, double y)
{
mSVGBuffer << boost::format(R"(<text x="%f" y="%f">%s</text>)") % x % y % text.c_str() << "\n";
}
template <typename T>
void polygon(const o2::mch::contour::Polygon<T>& p)
{
mSVGBuffer << R"(<polygon fill="blue" points=")";
auto vertices = getVertices(p);
for (auto j = 0; j < vertices.size(); ++j) {
auto v = vertices[j];
mSVGBuffer << v.x << "," << v.y << ' ';
}
mSVGBuffer << R"("/>)"
<< "\n";
}
template <typename T>
void contour(const o2::mch::contour::Contour<T>& c)
{
for (auto& p : c.getPolygons()) {
polygon(p);
}
}
template <typename T>
void polygon(const o2::mch::contour::Polygon<T>& p, const std::string& fillColor)
{
// modification
mSVGBuffer << R"(<polygon fill=")" << fillColor << R"(" points=")";
auto vertices = getVertices(p);
for (auto j = 0; j < vertices.size(); ++j) {
auto v = vertices[j];
mSVGBuffer << v.x << "," << v.y << ' ';
}
mSVGBuffer << R"("/>)"
<< "\n";
}
template <typename T>
void contour(const o2::mch::contour::Contour<T>& c, const std::string& color)
{
for (auto& p : c.getPolygons()) {
polygon(p, color);
}
}
void points(const std::vector<std::pair<double, double>>& pts, double radius = 0.05)
{
for (auto& p : pts) {
mSVGBuffer << boost::format(R"(<circle cx="%f" cy="%f" r="%f"/>)") % p.first % p.second % radius << "\n";
}
}
void addStyle(const std::string& style) { mStyleBuffer << style << "\n"; }
void writeStyle(std::ostream& os) { os << "<style>\n"
<< mStyleBuffer.str() << "</style>\n"; }
void writeSVG(std::ostream& os)
{
os << boost::format(R"(<svg width="%d" height="%d" viewBox="%f %f %f %f">)") % mWidth %
mHeight % mViewingBox.xmin() % mViewingBox.ymin() % mViewingBox.width() % mViewingBox.height();
os << mSVGBuffer.str();
os << "</svg>";
}
void writeHTML(std::ostream& os)
{
os << "<html>\n";
writeStyle(os);
os << "<body>\n";
writeSVG(os);
os << "</body>\n";
os << "</html>\n";
}
private:
std::stringstream mSVGBuffer;
std::stringstream mStyleBuffer;
int mWidth;
int mHeight;
o2::mch::contour::BBox<double> mViewingBox;
};
} // namespace contour
} // namespace mch
} // namespace o2
#endif