如何将点或虚线添加到Python中的PNG？

Question

您好，我想画一条虚线或虚线到PNG，我找不到我该怎么做，有人可以帮忙吗？

im = image.new（'rgb'，（2000,2000），元组（int（hex_color [i：i+2]，16，16），for In（0，2，4）））打印（0，2，4））。 .. saving ...“）im.save（'c：\\ users \\ th3m1s \\ desktop \\ lejant \\'+str（legend_code）+'。png'，质量= 100） 结果是单击此处

Answer 1

您是否考虑过使用垂直线和水平线创建新图像，比原始图像略高略高，更宽，您粘贴了原始图像？
这样，您将有一个虚线的边框，并且适用于各种尺寸。

这可以如下所述完成：

from PIL import Image,ImageDraw
#this is your own image
yourimage = Image.open('/home/vancha/Documenten/python/pillu/square.png', 'r')
img_w, img_h = yourimage.size
border_width = 5
#this is the new image which holds the stripes
borderimage = Image.new('RGBA', (2000+(border_width * 2), 2000+(border_width *2)), (255, 255, 255, 255))


# Draw the lines
draw = ImageDraw.Draw(borderimage)
#starts drawing vertical lines form the very top
start = 0
end = borderimage.height#width or height, doens't matter since the image is square
step_size = border_width*4

#starts from border_width * 2, so that the very top and very left aren't made black with lines
for x in range(border_width*2, borderimage.width, step_size):
    vertical_line = ((x, start), (x, end))
    #the width is the thickness of the "dots" in the border
    draw.line(vertical_line, fill=(0,0,0),width=border_width * 2)

    horizontal_line = ((start,x), (end, x))
    draw.line(horizontal_line, fill=(0,0,0),width=border_width *2)

#for good practice:
del draw


bg_w, bg_h = borderimage.size
#calculate the offset so that the image is centered
offset = ((bg_w - img_w) // 2, (bg_h - img_h) // 2)

#paste your old image over the one with the dots
borderimage.paste(yourimage, offset)

#save it wherever you want :)
borderimage.save('./border.png')

“>在您的情况下， 如果您将自己的图像粘贴在中心，则在2010年将是2010年的新图像，使您在两边都有5px。