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2022-12-06在线python复现李寻的爱心

2022-12-06在线python复现李寻的爱心

作者: 汪大山 | 来源:发表于2022-12-05 16:12 被阅读0次

import random

from mathimport sin, cos, pi, log

from tkinterimport *

CANVAS_WIDTH =640 # 宽

CANVAS_HEIGHT =480 # 高

CANVAS_CENTER_X = CANVAS_WIDTH /2

CANVAS_CENTER_Y = CANVAS_HEIGHT /2

IMAGE_ENLARGE =11 # 放大比例

HEART_COLOR ="#FF1493"

def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):

"""

  “爱心函数生成器”

  :param shrink_ratio: 放大比例  :param t: 参数  :return: 坐标"""

  # 基础函数

  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):

"""

  随机内部扩散  :param x: 原x

  :param y: 原y

  :param beta: 强度  :return: 新坐标"""

  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):

"""

  抖动  :param x: 原x

  :param y: 原y

  :param ratio: 比例  :return: 新坐标"""

  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):

"""

  自定义曲线函数,调整跳动周期  :param p: 参数  :return: 正弦"""

  return 2 * (2 * sin(4 * p)) / (2 * pi)

class Heart:

"""

  爱心类"""

  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 framein range(generate_frame):

self.calc(frame)

def build(self, number):

# 爱心

    for _in range(number):

t = random.uniform(0, 2 * pi)# 随机不到的地方造成爱心有缺口

      x, y = heart_function(t)

self._points.add((x, y))

# 爱心内扩散

    for _x, _yin 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):

# 调整缩放比例

    force =1 / (((x - CANVAS_CENTER_X) **2 + (y - CANVAS_CENTER_Y) **2) **0.520)# 魔法参数

    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)# 圆滑的周期的缩放比例

    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()# 光环的点坐标集合

    for _in range(halo_number):

t = random.uniform(0, 2 * pi)# 随机不到的地方造成爱心有缺口

      x, y = heart_function(t, shrink_ratio=11.6)# 魔法参数

      x, y = shrink(x, y, halo_radius)

if (x, y)not in heart_halo_point:

# 处理新的点

        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, yin 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, yin self._edge_diffusion_points:

x, y = self.calc_position(x, y, ratio)

size = random.randint(1, 2)

all_points.append((x, y, size))

for x, yin 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, sizein 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()# 一个Tk

  canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)

canvas.pack()

heart = Heart()# 心

  draw(root, canvas, heart)

canvas.mainloop()

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