Function applyWhiteCfg

src/fl/channels/channel.cpp.hpp:35–45

@brief Apply the white-channel selection from ChannelOptions to a CLEDController. The variant alternative chooses RGB-only / RGBW / RGBWW without forcing every call site to duplicate the dispatch.

/// CLEDController. The variant alternative chooses RGB-only / RGBW / RGBWW
/// without forcing every call site to duplicate the dispatch.
inline void applyWhiteCfg(CLEDController& ctrl,
                          const ChannelOptions& options) FL_NOEXCEPT {
    if (auto* p = options.mWhiteCfg.ptr<Rgbww>()) {
        ctrl.setRgbww(*p);
    } else if (auto* p = options.mWhiteCfg.ptr<Rgbw>()) {
        ctrl.setRgbw(*p);
    } else {
        // Empty alternative (or default-constructed) → plain RGB.
        ctrl.clearWhiteChannel();
    }
}

/// @brief Encapsulates pixel iterator construction with optional XYMap reordering
class ReorderingPixelIteratorAny {