opencv -多段线和矩形交点

import cv2
import numpy as np

# 创建矩形
rect = (100, 100, 200, 200)  # (x, y, width, height)

# 创建多段线
pts = np.array([[150, 50], [250, 50], [250, 150], [150, 150]], np.int32)
pts = pts.reshape((-1, 1, 2))

# 创建空白图像
img = np.zeros((300, 300, 3), np.uint8)

# 绘制矩形和多段线
cv2.rectangle(img, (rect[0], rect[1]), (rect[0]+rect[2], rect[1]+rect[3]), (0, 255, 0), 2)
cv2.polylines(img, [pts], True, (0, 0, 255), 2)

# 计算交点
intersection = cv2.clipLine(rect, pts[0][0], pts[1][0])

# 绘制交点
if intersection:
    cv2.circle(img, intersection, 5, (255, 0, 0), -1)

# 显示图像
cv2.imshow("Intersection", img)
cv2.waitKey(0)
cv2.destroyAllWindows()