math::StdArrayVecAccessTag Struct Reference

Tag dispatch for vector coordinates to be accessed with a temporary std::array<> object. More...

#include <mathtools/vec_traits.h>

Inheritance diagram for math::StdArrayVecAccessTag:

Detailed Description

Tag dispatch for vector coordinates to be accessed with a temporary std::array<> object.

When none of the other tags can be used, then StdArrayVecAccessTag is the fallback access to vector coordinates. It has the penality of the creation of a temporary std::array<> object that will store the vector coordinates.

Example :

struct MyVector2D
{
  double x;
  double y;
};

namespace math {
  template<> struct VecAccess<MyVector2D>
  {
    // Optional: required only for mutating algorithms
    static void assign(MyVector2D& vec, const std::array<double, 2>& array)
    {
      vec.x = array.at(0);
      vec.y = array.at(1);
    }

    static std::array<double, 2> stdarray(const MyVector2D& vec)
    {
      const std::array<double, 2> array = { vec.x, vec.y };
      return array;
    }
  };
}

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The documentation for this struct was generated from the following file:

• vec_traits.h