import random
from math import sin, cos, pi, log
from tkinter import *
CANVAS_WIDTH = 640
CANVAS_HEIGHT = 640
CANVAS_CENTER_X = CANVAS_WIDTH / 2
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2
IMAGE_ENLARGE = 11
HEART_COLOR = "#Fd798f" # 粉:Fd798f
def heart_function(t, shrink_ratio: float = IMAGE_ENLARGE):
# 爱心的宽度
x = 16 * (sin(t) ** 3)
# 爱心的长度(高度,心头)
y = -(15 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(3 * t))
# y =﹣(13* cos ( t )-5* cos (2* t )-3* cos (3* t )- cos (4* t ))
# 放大
x *= shrink_ratio # 收缩率
y *= shrink_ratio
# 移到画布中央
x += CANVAS_CENTER_X
y += CANVAS_CENTER_Y
return int(x), int(y)
# 散射_侧面
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
# 收缩
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
# 曲线
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
self._center_diffusion_points = set() # 中心扩散效果
self.all_points = {} # 每帧动态点坐标
self.build(2000)
# 随机光晕1000
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) # 0.2
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, 0.3) # 0.2
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, 0.2) # 0.2
self._center_diffusion_points.add((x, y))
@staticmethod
# 计算位置
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(-2, 2)
dy = ratio * force * (y - CANVAS_CENTER_Y) + random.randint(-2, 2)
return x - dx, y - dy
def calc(self, generate_frame):
ratio = 15 * curve(generate_frame / 15 * pi)
halo_radius = int(4 + 6 * (1 + curve(generate_frame / 15 * pi)))
halo_number = int(
3000 + 4000 * abs(curve(generate_frame / 15 * 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=11.5)
x, y = shrink(x, y, halo_radius)
if (x, y) not in heart_halo_point:
heart_halo_point.add((x, y))
x += random.randint(-16, 16)
y += random.randint(-16, 16)
# 点的太小
size = random.choice((2, 2, 1)) # 122
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, 2)
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("怦怦~是心动呀~") # 展示框的标题
canvas = Canvas(root, bg='black', height=CANVAS_HEIGHT, width=CANVAS_WIDTH)
canvas.pack()
heart = Heart()
draw(root, canvas, heart)
root.mainloop()
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