type_mappings.cppm

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//
// Created by castle on 2/22/25.
//
 
export module cydui.interpolation:mappings;
 
import std;
 
export namespace cydui {
  template <typename T>
  struct interp_mapping;
 
  template <typename T>
  concept HasInterpolationMapping = requires(T t) {
    { interp_mapping<T>::to_float(t) } -> std::same_as<float>;
    { interp_mapping<T>::from_float(std::declval<float>()) } -> std::same_as<T>;
  };
 
  template <typename T>
  struct static_cast_interp_mapping {
    static float to_float(const T& val) {
      return static_cast<float>(val);
    }
 
    static T from_float(float val) {
      return static_cast<T>(val);
    }
  };
}
 
export template <>
struct cydui::interp_mapping<int>: cydui::static_cast_interp_mapping<int>{};
 
export template <>
struct cydui::interp_mapping<long>: cydui::static_cast_interp_mapping<long>{};
 
export template <>
struct cydui::interp_mapping<double>: cydui::static_cast_interp_mapping<double>{};