eigen_formatters.hpp

#pragma once
 
#include "Eigen/Geometry"
 
#if FMT_VERSION >= 90000
 
#include <fmt/ostream.h>
 
template <typename Scalar_, int Rows_, int Cols_, int Options_, int MaxRows_,
          int MaxCols_>
struct fmt::formatter<
    Eigen::Matrix<Scalar_, Rows_, Cols_, Options_, MaxRows_, MaxCols_>>
    : ostream_formatter {};
 
template <typename T>
struct fmt::formatter<Eigen::Transpose<T>> : ostream_formatter {};
#endif
 
template <>
struct fmt::formatter<Eigen::Vector3d> {
  template <typename ParseContext>
  // NOLINTNEXTLINE(runtime/references)
  constexpr auto parse(ParseContext& ctx) {
    return ctx.begin();
  }
 
  template <typename FormatContext>
  // NOLINTNEXTLINE(runtime/references)
  auto format(Eigen::Vector3d const& v, FormatContext& ctx) const {
    return fmt::format_to(ctx.out(), "x: {} y: {} z: {}", v.x(), v.y(), v.z());
  }
};