https://docs.singtown.com/micropython/zh/latest/openmvcam/library/omv.image.html#line
line2.line()是直线元组(x1, y1, x2, y2) 。
x1 = line2.x1() + 59
y1 = line2.y1()
x2 = line2.x2()
y2 = line2.y2()
img.draw_line( [x1,y1,x2,y2], color = 50)
如果想简单一点：
img.draw_line(line2.line()+[59,0,0,0], color = 50)