Method font_size

source/matplot/axes_objects/surface.cpp:778–784

    }

    float surface::font_size() const {
        if (font_size_) {
            return *font_size_;
        } else {
            return parent_->font_size();
        }
    }

    class surface &surface::font_size(const float &font_size) {
        font_size_ = font_size;