©2020-2024 ioDraw All rights reserved
import random from math import sin, cos, pi, log from tkinter import * import
ctypes user32 = ctypes.windll.user32 CANVAS_WIDTH = user32.GetSystemMetrics(0)
# 画布的宽 CANVAS_HEIGHT = user32.GetSystemMetrics(1) # 画布的高 CANVAS_CENTER_X =
CANVAS_WIDTH / 2 # 画布中心的X轴坐标 CANVAS_CENTER_Y = CANVAS_HEIGHT / 2 # 画布中心的Y轴坐标
IMAGE_ENLARGE = 11 # 放大比例 HEART_COLOR = "#c55060" # 心的颜色，这个是中国红 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) # 这个参数... 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 """ #
可以尝试换其他的动态函数，达到更有力量的效果（贝塞尔？） 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 frame in 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, _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): # 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, 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)) 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() # 一个Tk root.attributes('-fullscreen', True) # 全屏
root.attributes('-alpha', 0.9) # 透明度 canvas = Canvas(root, bg='black',
height=CANVAS_HEIGHT, width=CANVAS_WIDTH) canvas.pack() heart = Heart() # 心
draw(root, canvas, heart) # 开始画画~ root.mainloop()
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