misc.h

#pragma once
 
#include <algorithm>
#include <cmath>
 
namespace rmb::math {
 
template <typename T> inline bool withinRange(T n, T lo, T hi) {
  if (hi < lo)
    std::swap(lo, hi);
 
  return n > lo && n < hi;
}
 
template <typename T>
inline T map(T n, T start1, T stop1, T start2, T stop2,
             bool withinBounds = true) {
  const T newval = (n - start1) / (stop1 - start1) * (stop2 - start2) + start2;
  if (!withinBounds) {
    return newval;
  }
  if (start2 < stop2) {
    return std::clamp(newval, start2, stop2);
  } else {
    return std::clamp(newval, stop2, start2);
  }
}
} // namespace rmb::math