template.h

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#pragma once
#include <limits>
#include <type_traits>

namespace MySpace
{

template<class T, class S>
auto calculateOffset(T value, T min_val, T max_val, S len, bool clip) -> S
{
  max_val -= min_val;
  value -= min_val;
  S temp;
  if constexpr (std::is_floating_point<T>())
  {
    temp = len * (value / max_val);
  }
  else
  {
    temp = (len * value) / max_val;
  }
  temp = (max_val && value) ? temp : 0;
  // Clip when required.
  if (clip)
  {
    // When the len is a negative value.
    if (len < 0)
    {
      return (temp < len) ? len : (temp > S(0)) ? S(0) : temp;
    }
    return (temp > len) ? len : (temp < S(0)) ? S(0) : temp;
  }
  return temp;
}

template<class T>
inline auto clip(const T value, const T min_val, const T max_val) -> T
{
  return (value < min_val) ? min_val : ((value > max_val) ? max_val : value);
}
 
}// namespace MySpace