column.""" free_stripes = [] # y-value pairs wrapping a free area stripe # intersecting images: block complete intersecting column stripe col_imgs = [(b.y0, b.y1) for b in IMG_RECTS if abs(b & column) > col_imgs: # an image stripe if y0 > s_y0 + FONTSIZE: # image starts below last free btm value free_stripes.append((s_y0, y0)) # store as free stripe s_y0 = y1 # start of next free stripe if s_y0 + FONTSIZE -1 if content did not fit, else >= 0. It is the height of the unused (still available) rectangle stripe. Positive only if scale = 1 (no down-scaling happened). • scale: down-scaling factor, 0 < scale