Method empty

src/fl/gfx/raster_sparse.h:269–269

    const_iterator end() const { return mSparseGrid.end(); }
    fl::size size() const { return mSparseGrid.size(); }
    bool empty() const { return mSparseGrid.empty(); }

    pair<bool, CRGB> at(u16 x, u16 y) const {
        const CRGB *val = mSparseGrid.find_value(vec2<u16>(x, y));