Method flush

src/fl/fx/2d/wave.cpp.hpp:50–59

@brief Process all accumulated entries and update LEDs Performs a single gradient fill operation for all accumulated alphas, then writes the resulting colors to their corresponding LEDs. Clears the batch after processing.

    /// alphas, then writes the resulting colors to their corresponding LEDs.
    /// Clears the batch after processing.
    void flush() {
        span<const u8> alphas(mAlphas);
        CRGB rgb[kMaxBatchSize] = {};
        mGradient->fill(mAlphas, rgb);
        for (size_t i = 0; i < mIndices.size(); i++) {
            mLeds[mIndices[i]] = rgb[i];
        }
        mAlphas.clear();
        mIndices.clear();
    }

    static const size_t kMaxBatchSize = 32;  ///< Maximum batch size before forced flush
    using ArrayIndices = fl::FixedVector<fl::u32, kMaxBatchSize>;