Method ToRGB

examples/LuminescentGrand/shared/color.cpp:129–151

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Color3i ColorHSV::ToRGB() const {
  typedef double FloatT;
  FloatT r = 0;
  FloatT g = 0;
  FloatT b = 0;

  int i = int(h_ * 6);
  FloatT f = h_ * 6.0 - static_cast<FloatT>(i);
  FloatT p = v_ * (1.0 - s_);
  FloatT q = v_ * (1.0 - f * s_);
  FloatT t = v_ * (1.0 - (1.0 - f) * s_);

  switch(i % 6){
    case 0: r = v_, g = t, b = p; break;
    case 1: r = q, g = v_, b = p; break;
    case 2: r = p, g = v_, b = t; break;
    case 3: r = p, g = q, b = v_; break;
    case 4: r = t, g = p, b = v_; break;
    case 5: r = v_, g = p, b = q; break;
  }

  return Color3i(round(r * 255), round(g * 255), round(b * 255));
}