Python的爱心动效

基于 Python 实现的爱心动效，类似电视剧《点燃我温暖你》中展示的视觉效果，可调整窗口大小。

使用以下的技术

tkinter 界面库

效果

实践

import random
from math import sin, cos, pi, log
import time
from tkinter import *CANVAS_WIDTH = 1080  # 画布的宽(X)
CANVAS_HEIGHT = 720  # 画布的高(Y)
CANVAS_CENTER_X = CANVAS_WIDTH / 2  # 画布中心的X坐标
CANVAS_CENTER_Y = CANVAS_HEIGHT / 2  # 画布中心的Y坐标def heart_function(t, cx=CANVAS_CENTER_X, cy=CANVAS_CENTER_Y, ratio=10):"""爱心生成器:param t: 参数:param cx: 中心x坐标:param cy: 中心y坐标:param ratio: 放大比例:return: 坐标"""# 心形线函数x = 17 * (sin(t)**3)y = -(16 * cos(t) - 5 * cos(2 * t) - 2 * cos(3 * t) - cos(3 * t))# 放大x *= ratioy *= ratio# 移到画布中央x += cxy += cyreturn int(x), int(y)def scatter_inside(x, y, cx=CANVAS_CENTER_X, cy=CANVAS_CENTER_Y, beta=0.15):"""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 - cx)dy = ratio_y * (y - cy)return x - dx, y - dydef rhythmic(p):"""调整跳动周期:param p: 参数:return: 正弦"""return 2 * (2 * sin(4 * p)) / (2 * pi)class Heart:def __init__(self,w=CANVAS_WIDTH,h=CANVAS_HEIGHT,cx=CANVAS_CENTER_X,cy=CANVAS_CENTER_Y,generate_frame=60):self._edge_points = set()self._edge_diffusion_points = set()self._points = set()self.all_frame_points = {}self.w = wself.h = hself.cx = cxself.cy = cyself.build(3000)  # 生成基础的点坐标self.generate_frame = generate_framefor frame in range(generate_frame):self.get_frame(frame)def build(self, number):for _ in range(number):t = random.uniform(0, 2 * pi)x, y = heart_function(t, self.cx, self.cy, 10)self._edge_points.add((x, y))for _x, _y in list(self._edge_points):for _ in range(5):x, y = scatter_inside(_x, _y, self.cx, self.cy, 0.1)self._edge_diffusion_points.add((x, y))point_list = list(self._edge_points)for _ in range(10000):x, y = random.choice(point_list)x, y = scatter_inside(x, y, self.cx, self.cy, 0.3)self._points.add((x, y))@staticmethoddef shrink_position_1st(x,y,cx=CANVAS_CENTER_X,cy=CANVAS_CENTER_Y,ratio=10):force = 1 / (((x - cx)**2 + (y - cy)**2)**0.45)dx = ratio * force * (x - cx) + random.randint(-1, 1)dy = ratio * force * (y - cy) + random.randint(-1, 1)return x - dx, y - dy@staticmethoddef shrink_position_2st(x,y,cx=CANVAS_CENTER_X,cy=CANVAS_CENTER_Y,ratio=10):force = -1 / (((x - cx)**2 + (y - cy)**2)**0.6)dx = ratio * force * (x - cx)dy = ratio * force * (y - cy)return x - dx, y - dydef get_frame(self, generate_frame):all_kind_points = {"heart_edge": [],"heart_edge_diffusion": [],"heart": [],"heart_halo": []}ratio = 15 * rhythmic(generate_frame / 10 * pi)  # 周期性的缩放系数# 动态变化的爱心轮廓for x, y in self._edge_points:x, y = self.shrink_position_1st(x, y, self.cx, self.cy, ratio)size = random.randint(1, 2)all_kind_points["heart_edge"].append((x, y, size))# 动态变化的扩散的爱心轮廓for x, y in self._edge_diffusion_points:x, y = self.shrink_position_1st(x, y, self.cx, self.cy, ratio)size = random.randint(1, 2)all_kind_points["heart_edge_diffusion"].append((x, y, size))# 动态变化的爱心for x, y in self._points:x, y = self.shrink_position_1st(x, y, self.cx, self.cy, ratio)size = random.randint(1, 2)all_kind_points["heart"].append((x, y, size))# 固定大小的爱心光晕halo_radius = int(4 + 6 * (1 + rhythmic(generate_frame / 10 * pi)))halo_number = int(4000 + 6000 *(1 + rhythmic(generate_frame / 10 * pi)))heart_halo_point = set()for _ in range(halo_number):t = random.uniform(0, 2 * pi)x, y = heart_function(t, self.cx, self.cy, ratio=10)x, y = self.shrink_position_2st(x, y, self.cx, self.cy,halo_radius)if (x, y) not in heart_halo_point:heart_halo_point.add((x, y))x += random.randint(-40, 40)y += random.randint(-40, 40)size = random.choice((1, 2, 1))all_kind_points["heart_halo"].append((x, y, size))all_kind_points["heart_halo"].append((x + 20, y + 20, size))all_kind_points["heart_halo"].append((x - 20, y - 20, size))all_kind_points["heart_halo"].append((x + 20, y - 20, size))all_kind_points["heart_halo"].append((x - 20, y + 20, size))self.all_frame_points[generate_frame] = all_kind_pointsdef render(self, canvas, current_frame):for x, y, size in self.all_frame_points[current_frame % self.generate_frame]["heart_edge"]:canvas.create_rectangle(x,y,x + size,y + size,width=0,fill="#ef7a82")for x, y, size in self.all_frame_points[current_frame % self.generate_frame]["heart_edge_diffusion"]:canvas.create_rectangle(x,y,x + size,y + size,width=0,fill="#ef7a82")for x, y, size in self.all_frame_points[current_frame %self.generate_frame]["heart"]:canvas.create_rectangle(x,y,x + size,y + size,width=0,fill="#ff2d51")for x, y, size in self.all_frame_points[current_frame % self.generate_frame]["heart_halo"]:canvas.create_rectangle(x,y,x + size,y + size,width=0,fill="#ff2d51")def draw(winer: Tk,w=CANVAS_WIDTH,h=CANVAS_HEIGHT,cx=CANVAS_CENTER_X,cy=CANVAS_CENTER_Y,current_frame=0):global canvasglobal heartif current_frame == 0:canvas = Canvas(winer, bg='black', bd=0, width=w, height=h)canvas.pack()heart = Heart(w=w, h=h, cx=cx, cy=cy, generate_frame=60)if current_frame != 0:if winer.winfo_width() != w + 6 or winer.winfo_height() != h + 6:w = winer.winfo_width() - 6h = winer.winfo_height() - 6cx = w / 2cy = h / 2canvas.destroy()winer.update()time.sleep(0.03)canvas = Canvas(winer, bg='black', bd=0, width=w, height=h)canvas.pack()heart = Heart(w=w, h=h, cx=cx, cy=cy, generate_frame=60)canvas.delete('all')heart.render(canvas, current_frame)winer.after(int(1000 / 60), draw, winer, w, h, cx, cy, current_frame + 1)if __name__ == '__main__':# 创建窗口事件root = Tk()root.title("跳动的心")# 在窗口中定义绘制draw(winer=root,w=CANVAS_WIDTH,h=CANVAS_HEIGHT,cx=CANVAS_CENTER_X,cy=CANVAS_CENTER_Y,current_frame=0)# 执行窗口事件root.mainloop()print("运行完成")

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