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鸽子
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850天前import random |
from math import sin, cos, pi, log |
from tkinter import * |
CANVAS_WIDTH = 640 # 画布的宽 |
CANVAS_HEIGHT = 480 # 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 = "pink" # 心的颜色 |
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 |
""" |
return 4 * (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) |
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) |
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(-11, 11) |
y += random.randint(-11, 11) |
size = random.choice((1, 2, 2))#控制外围粒子的大小 |
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._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 |
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() |
