python：女生节礼物，怎么用代码写一个玫瑰+一个心

原创

于 2018-03-08 18:36:53 发布 · 9.3k 阅读

CC 4.0 BY-SA版权

这个Python脚本通过ROS（Robot Operating System）发布激光扫描消息，创建了一个模拟的激光雷达数据，数据经过处理形成类似玫瑰和心形的图形。通过四个定时回调函数Timer_CB1至Timer_CB4，分别绘制了不同形状的花瓣和心形轮廓，展示了将数学与编程结合的艺术创作。

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#!/usr/bin/env python
#coding=utf-8
#女生节礼物

import rospy
from sensor_msgs.msg import LaserScan
import numpy
import copy

node_name = "Test_Maker"

class Test_Maker():
    def __init__(self):
        self.Define()
        rospy.Timer(rospy.Duration(0.5), self.Timer_CB1)
        rospy.Timer(rospy.Duration(0.5), self.Timer_CB2)
        rospy.Timer(rospy.Duration(0.5), self.Timer_CB3)
        rospy.Timer(rospy.Duration(0.5), self.Timer_CB4)
        rospy.spin()

    def Define(self):
        self.pub_scan1 = rospy.Publisher('test/test_scan1', LaserScan, queue_size=1)
        self.pub_scan2 = rospy.Publisher('test/test_scan2', LaserScan, queue_size=1)
        self.pub_scan3 = rospy.Publisher('test/test_scan3', LaserScan, queue_size=1)
        #慎用！！！！
        self.pub_scan4 = rospy.Publisher('test/test_scan4', LaserScan, queue_size=1)

    def Timer_CB1(self, e):
        data = LaserScan()
        data.header.frame_id = "base_link"
        data.angle_min =