利用距离公式来计算距离
import numpy as np def get_distance_from_point_to_line(point, line_point1, line_point2): #对于两点坐标为同一点时,返回点与点的距离 if line_point1 == line_point2: point_array = np.array(point ) point1_array = np.array(line_point1) return np.linalg.norm(point_array -point1_array ) #计算直线的三个参数 A = line_point2[1] - line_point1[1] B = line_point1[0] - line_point2[0] C = (line_point1[1] - line_point2[1]) * line_point1[0] + \ (line_point2[0] - line_point1[0]) * line_point1[1] #根据点到直线的距离公式计算距离 distance = np.abs(A * point[0] + B * point[1] + C) / (np.sqrt(A**2 + B**2)) return distance
利用向量计算点到直线的距离
import numpy as np def point_distance_line(point,line_point1,line_point2): #计算向量 vec1 = line_point1 - point vec2 = line_point2 - point distance = np.abs(np.cross(vec1,vec2)) / np.linalg.norm(line_point1-line_point2) return distance point = np.array([5,2]) line_point1 = np.array([2,2]) line_point2 = np.array([3,3]) print(get_distance_from_point_to_line(point,line_point1,line_point2)) print(point_distance_line(point,line_point1,line_point2))