----------------------------------------------------------------------- function : size @brief return the size of the range @return size ------------

<b>Effects</b>: Assigns the n copies of val to *this. <b>Throws</b>: If memory allocation throws or T's copy constructor throws. <b>Complexity</b>:

returns the explanatory string

p_min = upper-left, p_max = lower-right Note we don't render 1 pixels sized rectangles properly.

return iterator end (needed for range-based for)