for _,shape in ipairs(line.shapes) do

      for i,shape in ipairs(line.shapes) do
        assert(shape)

        table.insert(lines.current.shapes, lines.current.pending)

        local j = insert_point(lines.current.points, coord(x-16), coord(y-lines.current.y))
        lines.current.pending.p2 = j

        local mx,my = coord(x-16), coord(y-lines.current.y)
        if mx >= 0 and mx < 256 and my >= 0 and my < lines.current.h then
          local j = insert_point(lines.current.points, mx,my)
          lines.current.pending.p2 = j
          table.insert(lines.current.shapes, lines.current.pending)
        end

        if math.abs(mx-p1.x) > math.abs(my-p1.y) then
          local j = insert_point(lines.current.points, mx, p1.y)
          lines.current.pending.p2 = j
        else
          local j = insert_point(lines.current.points, p1.x, my)
          lines.current.pending.p2 = j

        if mx >= 0 and mx < 256 and my >= 0 and my < lines.current.h then
          if math.abs(mx-p1.x) > math.abs(my-p1.y) then
            local j = insert_point(lines.current.points, mx, p1.y)
            lines.current.pending.p2 = j
          else
            local j = insert_point(lines.current.points, p1.x, my)
            lines.current.pending.p2 = j
          end
          local p2 = lines.current.points[lines.current.pending.p2]
          love.mouse.setPosition(16+pixels(p2.x), lines.current.y+pixels(p2.y))
          table.insert(lines.current.shapes, lines.current.pending)

        local p2 = lines.current.points[lines.current.pending.p2]
        love.mouse.setPosition(16+pixels(p2.x), lines.current.y+pixels(p2.y))

      table.insert(lines.current.shapes, lines.current.pending)

    love.graphics.line(pixels(p1.x)+left,pixels(p1.y)+top, love.mouse.getX(),love.mouse.getY())

    local mx,my = coord(love.mouse.getX()-16), coord(love.mouse.getY()-drawing.y)
    if mx < 0 or mx >= 256 or my < 0 or my >= drawing.h then
      return
    end
    love.graphics.line(pixels(p1.x)+left,pixels(p1.y)+top, pixels(mx)+left,pixels(my)+top)

    if mx < 0 or mx >= 256 or my < 0 or my >= drawing.h then
      return
    end

          assert(shape)