翻译这段代码：def distance_to_line(self, point1, point2, point): # Calculate the distance between the vehicle and the lookahead point x_diff = point2[0] - point1[0] y_diff = point2[1] - point1[1] u = ((point[0] - point1[0]) * x_diff + (point[1] - point1[1]) * y_diff) / \ (x_diff**2 + y_diff**2) x_intersect = point1[0] + u * x_diff y_intersect = point1[1] + u * y_diff dx = x_intersect - point[0] dy = y_intersect - point[1] dist = np.sqrt(dx**2 + dy**2) return dist

这段代码定义了一个名为distance_to_line的方法，该方法计算了一个点到一条直线的距离。该方法有三个参数：point1、point2和point，分别表示直线上的两个点和需要计算距离的点。具体实现如下：

- 计算直线的斜率和截距。
- 计算该点到直线的垂线的交点坐标。
- 计算该点与交点之间的距离。
- 返回距离。

其中，斜率和截距的计算使用了两个点的坐标差值，即x_diff和y_diff。交点的计算使用了垂线的定义，即通过斜率、截距和该点坐标计算得出。距离的计算使用了勾股定理，即该点与交点之间的水平距离和垂直距离的平方和的平方根。最后，将距离作为该方法的返回值。

相关问题

Point::distance(Point &p2)

otherPoint) calculates the Euclidean distance between the current point and the point specified by the otherPoint parameter.

Here's an implementation in Python:

import math

class Point:
    def __init__(self, x, y):
        self.x = x
        self.y = y

    def distance(self, otherPoint):
        dx = self.x - otherPoint.x
        dy = self.y - otherPoint.y
        return math.sqrt(dx**2 + dy**2)

This implementation uses the math module to calculate the square root of the sum of the squared differences between the x and y coordinates of the two points.