Python教程38：使用turtle画动态粒子爱心+文字爱心

Turtle库是Python语言中的一个标准库，它提供了一种有趣的方式来介绍编程和图形绘制的基本概念。Turtle库使用一个虚拟的“海龟”来绘制图形。你可以控制海龟的方向、速度和位置，通过向前移动、向左转或向右转等命令来绘制线条、圆弧多边形等图形。
---------------turtle源码集合---------------

Python教程36：海龟画图turtle写春联

Python源码35：海龟画图turtle画中国结

Python源码31：海龟画图turtle画七道彩虹

Python源码30：海龟画图turtle画紫色的小熊

Python源码29：海龟画图turtle画太极图

Python源码28：海龟画图turtle画熊猫

Python源码27：海龟画图turtle画动态圆舞曲

Python源码26：海龟画图turtle画向日葵

Python源码25：海龟画图turtle画小猪佩奇

Python源码24：使用海龟画图turtle画滑板

Python源码23：使用海龟画图turtle画小狗狗

Python源码22：使用海龟画图turtle画今天日期

Python源码21：使用海龟画图turtle画太阳，云朵，房子，绿树

Python源码20：使用海龟画图turtle画一个会动的星空

Python源码19：海龟画图turtle画螺旋的彩色的逐渐放大的文字

Python源码18：使用海龟画图turtle画捂脸表情

Python源码17：使用海龟画图turtle画五星红旗

Python源码16：使用海龟画图turtle画会动的时钟

Python源码15：使用海龟画图turtle画小黄人

Python源码14：使用海龟画图turtle画我的城堡

Python源码分享13：使用海龟画图turtle画一个会眨眼的皮卡丘

Python源码分享12：使用turtle画彩色六边形

Python源码分享11：使用海龟画图turtle画航天火箭

Python源码分享10：使用海龟画图turtle画哆啦A梦

Python源代码分享：02海龟画图五角星

Python源代码分享：03画一个奥运五环图

Python源代码分享：05使用turtle模块绘制一个彩色螺旋图案

Python源代码分享：07画满天繁星

Python源码分享08：使用turtle画一朵玫瑰花

Python源码分享10：使用海龟画图turtle画哆啦A梦

Python源码分享11：使用海龟画图turtle画航天火箭

Python源码分享12：使用turtle画彩色六边形

import random
from math import sin, cos, pi, log
from tkinter import *

CANVAS_WIDTH = 640
CANVAS_HEIGHT = 480
CANVAS_CENTER_X = CANVAS_WIDTH / 2
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2
IMAGE_ENLARGE = 11
HEART_COLOR = "#FF99CC"


def center_window(root, width, height):
    screenwidth = root.winfo_screenwidth()  # 获取显示屏宽度
    screenheight = root.winfo_screenheight()  # 获取显示屏高度
    size = '%dx%d+%d+%d' % (width, height, (screenwidth - width) /
                            2, (screenheight - height) / 2)  # 设置窗口居中参数
    root.geometry(size)  # 让窗口居中显示


def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):
    x = 16 * (sin(t) ** 3)
    y = -(13 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(4 * t))
    # 放大
    x *= shrink_ratio
    y *= shrink_ratio
    # 移到画布中央
    x += CANVAS_CENTER_X
    y += CANVAS_CENTER_Y
    return int(x), int(y)


def scatter_inside(x, y, beta=0.15):
    ratio_x = - beta * log(random.random())
    ratio_y = - beta * log(random.random())
    dx = ratio_x * (x - CANVAS_CENTER_X)
    dy = ratio_y * (y - CANVAS_CENTER_Y)
    return x - dx, y - dy


def shrink(x, y, ratio):
    force = -1 / (((x - CANVAS_CENTER_X) ** 2 +
                   (y - CANVAS_CENTER_Y) ** 2) ** 0.6)
    dx = ratio * force * (x - CANVAS_CENTER_X)
    dy = ratio * force * (y - CANVAS_CENTER_Y)
    return x - dx, y - dy


def curve(p):
    return 2 * (2 * sin(4 * p)) / (2 * pi)


class Heart:
    def __init__(self, generate_frame=20):
        self._points = set()  # 原始爱心坐标集合
        self._edge_diffusion_points = set()  # 边缘扩散效果点坐标集合
        self._center_diffusion_points = set()  # 中心扩散效果点坐标集合
        self.all_points = {}  # 每帧动态点坐标
        self.build(2000)
        self.random_halo = 1000
        self.generate_frame = generate_frame
        for frame in range(generate_frame):
            self.calc(frame)

    def build(self, number):
        for _ in range(number):
            t = random.uniform(0, 2 * pi)
            x, y = heart_function(t)
            self._points.add((x, y))
        # 爱心内扩散
        for _x, _y in list(self._points):
            for _ in range(3):
                x, y = scatter_inside(_x, _y, 0.05)
                self._edge_diffusion_points.add((x, y))
        # 爱心内再次扩散
        point_list = list(self._points)
        for _ in range(4000):
            x, y = random.choice(point_list)
            x, y = scatter_inside(x, y, 0.17)
            self._center_diffusion_points.add((x, y))

    @staticmethod
    def calc_position(x, y, ratio):
        force = 1 / (((x - CANVAS_CENTER_X) ** 2 +
                      (y - CANVAS_CENTER_Y) ** 2) ** 0.520)
        dx = ratio * force * (x - CANVAS_CENTER_X) + random.randint(-1, 1)
        dy = ratio * force * (y - CANVAS_CENTER_Y) + random.randint(-1, 1)
        return x - dx, y - dy

    def calc(self, generate_frame):
        ratio = 10 * curve(generate_frame / 10 * pi)
        halo_radius = int(4 + 6 * (1 + curve(generate_frame / 10 * pi)))
        halo_number = int(
            3000 + 4000 * abs(curve(generate_frame / 10 * pi) ** 2))
        all_points = []
        # 光环
        heart_halo_point = set()
        for _ in range(halo_number):
            t = random.uniform(0, 2 * pi)
            x, y = heart_function(t, shrink_ratio=11.6)
            x, y = shrink(x, y, halo_radius)
            if (x, y) not in heart_halo_point:
                heart_halo_point.add((x, y))
                x += random.randint(-14, 14)
                y += random.randint(-14, 14)
                size = random.choice((1, 2, 2))
                all_points.append((x, y, size))
        # 轮廓
        for x, y in self._points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 3)
            all_points.append((x, y, size))
        # 内容
        for x, y in self._edge_diffusion_points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 2)
            all_points.append((x, y, size))
        self.all_points[generate_frame] = all_points
        for x, y in self._center_diffusion_points:
            x, y = self.calc_position(x, y, ratio)
            size = random.randint(1, 2)
            all_points.append((x, y, size))
        self.all_points[generate_frame] = all_points

    def render(self, render_canvas, render_frame):
        for x, y, size in self.all_points[render_frame % self.generate_frame]:
            render_canvas.create_rectangle(
                x, y, x + size, y + size, width=0, fill=HEART_COLOR)


def draw(main: Tk, render_canvas: Canvas, render_heart: Heart, render_frame=0):
    render_canvas.delete('all')
    render_heart.render(render_canvas, render_frame)
    main.after(160, draw, main, render_canvas, render_heart, render_frame + 1)


if __name__ == '__main__':
    root = Tk()
    root.title("爱心粒子")
    center_window(root, CANVAS_WIDTH, CANVAS_HEIGHT)  # 窗口居中显示
    canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)
    canvas.pack()
    heart = Heart()
    draw(root, canvas, heart)
    Label(root, text="我爱你", bg="black", fg="#FF99CC", font="Helvetic 20 bold").place(
        relx=.5, rely=.5, anchor=CENTER)
    root.mainloop()

文字版爱心

import time
y = 2.5
while y>=-1.6:
    x = -3.0
    while x<=4.0:
        if (x*x+y*y-1)**3<=3.6*x*x*y*y*y or (x>-2.4 and x<-2.1 and y<1.5 and y>-1) or (((x<2.5 and x>2.2)or(x>3.4 and x<3.7)) and y>-1 and y<1.5) or (y>-1 and y<-0.6 and x<3.7 and x>2.2):
            print(' ',end="")
        else:
            print('*',end="")
        x += 0.1
    print()
    time.sleep(0.25)
    y -= 0.2

完毕！！感谢您的收看

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