Method add

renderers/agg/include/agg_blur.h:271–276

        }

        template<class ArgT> AGG_INLINE void add(const ArgT& v)
        {
            r += v.r;
            g += v.g;
            b += v.b;
        }

        template<class ArgT> AGG_INLINE void add(const ArgT& v, unsigned k)
        {