如何在 PIL ImageDraw 中增加多边形的厚度

Question

我正在使用 PIL，我在图像上绘制了贝塞尔曲线，我想增加该曲线的厚度。这是我的代码：

for image in images:
    img = Image.open("/home/ec2-user/virtualenvs/axonator-production/axonator/media/app_data/ax_picture_20150831_213704.png").convert('RGBA')
    for annotation in image["annotations"]:
        xys = []
        frame = annotation["frame"].split(",")
        frame = [int(float(frame[0])),int(float(frame[1])),int(float(frame[2])),int(float(frame[3]))]
        frame_location = (frame[0],frame[1])
        frame_size = (5000 , 5000)
        for point in annotation["path"]:
            pt = point["points"].split(",")
            xys.append((pt[0],pt[1]))
        bezier = make_bezier(xys)
        points = bezier(ts)
        curve = Image.new('RGBA', frame_size)
        import pdb; pdb.set_trace()
        curve_draw = ImageDraw.Draw(curve)
        curve_draw.polygon(points,outline="red")
        curve_draw.text(points[0],str(order))
        order = order + 1
        img.paste(curve,frame_location,mask = curve)
    img.save('out.png')

Answer 1

函数 draw.polygon() 不能像 line() 那样接受 'width' 参数。

除此之外，line() 将采用一系列点并绘制折线。

线尾会很难看，但是在线尾画圆圈，可以让它们变得漂亮！

下面的代码绘制了一个漂亮的粗红色多边形。

from PIL import Image, ImageDraw

points = (
    (30, 40),
    (120, 60),
    (110, 90),
    (20, 110),
    (30, 40),
    )

im = Image.new("RGB", (130, 120))
dr = ImageDraw.Draw(im)
dr.line(points, fill="red", width=9)
for point in points:
    dr.ellipse((point[0] - 4, point[1] - 4, point[0]  + 4, point[1] + 4), fill="red")
im.save("polygon.png")

如何在 PIL ImageDraw 中增加多边形的厚度

How to increase thickness of polygon in PIL ImageDraw

python

python-imaging-library