Python教程38:使用turtle画动态粒子爱心+文字爱心

2024-01-09 22:13:19

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
在这里插入图片描述


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
在这里插入图片描述

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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在这里插入图片描述

文章来源:https://blog.csdn.net/gxz888/article/details/135487718
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