# -*- coding: utf-8 -*-
import random


def __ease_out_expo(x):
    if x == 1:
        return 1
    else:
        return 1 - pow(2, -10 * x)
def get_track(distance):
    if not isinstance(distance, int) or distance < 0:
        raise ValueError(f"distance类型必须是大于等于0的整数: distance: {distance}, type: {type(distance)}")
    # 初始化轨迹列表
    slide_track = [[random.randint(20, 60), random.randint(10, 40), 0]]
    # 共记录count次滑块位置信息
    count = 30 + int(distance / 2)
    # 初始化滑动时间
    t = random.randint(50, 100)
    # 记录上一次滑动的距离
    _x = 0
    _y = 0
    for i in range(count):
        # 已滑动的横向距离
        x = round(__ease_out_expo(i / count) * distance)
        # 滑动过程消耗的时间
        t = random.randint(10, 20)
        if x == _x:
            continue
        slide_track.append([x - _x, _y, t])
        _x = x
    slide_track.append([0, 0, random.randint(200, 300)])
    return slide_track