Method expand

src/fl/math/geometry.h:457–457

    bool empty() const FL_NOEXCEPT { return (mMin.x == mMax.x && mMin.y == mMax.y); }

    void expand(const vec2<T> &p) FL_NOEXCEPT { expand(p.x, p.y); }

    void expand(const rect &r) FL_NOEXCEPT {
        expand(r.mMin);