除夕用不同的语言编写绚丽的烟花_jgdabc

网络投稿 02-07 676

不同语言编写的绚丽烟花一：简单Html先来一个简单的形象实现烟花（绝对绚丽）二：HTML+Canvas(内含js)三：js烟花效果四：用python实现的烟花（可以选择背景）

一：简单Html先来一个简单的形象实现烟花（绝对绚丽）

先看效果源码

<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>html5 canvas除夕烟花</title><base target="_blank" /> <link rel="stylesheet" type="text/css" href="http://hovertree.com/texiao/html5/43/css/normalize.css" /> <link rel="stylesheet" type="text/css" href="http://hovertree.com/texiao/html5/43/css/hovertree.css"> </head> <body> <div class="hovertree"></div> <script type="text/javascript" src="http://down.hovertree.com/jquery/jquery-1.11.0.min.js"></script> <script type="text/javascript" src="http://hovertree.com/texiao/html5/43/js/jquery.fireworks.js"></script> <script type="text/javascript"> $('.hovertree').fireworks({ sound: true, // sound effect opacity: 0.9, width: '100%', height: '100%' }); </script> <div style="width:340px;position:fixed;z-index:99;"><a href="http://hovertree.com/"></a> <a href="http://hovertree.com/h/bjag/me34x8fk.htm"></a></div> </body> </html> 二：HTML+Canvas(内含js)

我们先看实现效果

源码如下，一共三百多行

<!doctype html> <html> <head> <meta charset="utf-8"> <title>除夕炫彩</title> <style> html,body{ margin:0px; width:100%; height:100%; overflow:hidden; background:#000; } </style> </head> <body> <canvas id="canvas" style="position:absolute;width:100%;height:100%;z-index:8888"></canvas> <canvas style="position:absolute;width:100%;height:100%;z-index:9999" class="canvas" ></canvas> <div class="overlay"> <div class="tabs"> <div class="tabs-labels"><span class="tabs-label">Commands</span><span class="tabs-label">Info</span><span class="tabs-label">Share</span></div> <div class="tabs-panels"> <ul class="tabs-panel commands"> </ul> </div> </div> </div> <script> function initVars(){ pi=Math.PI; ctx=canvas.getContext("2d"); canvas.width=canvas.clientWidth; canvas.height=canvas.clientHeight; cx=canvas.width/2; cy=canvas.height/2; playerZ=-25; playerX=playerY=playerVX=playerVY=playerVZ=pitch=yaw=pitchV=yawV=0; scale=600; seedTimer=0;seedInterval=5,seedLife=100;gravity=.02; seeds=new Array(); sparkPics=new Array(); s="https://cantelope.org/NYE/"; for(i=1;i<=10;++i){ sparkPic=new Image(); sparkPic.src=s+"spark"+i+".png"; sparkPics.push(sparkPic); } sparks=new Array(); pow1=new Audio(s+"pow1.ogg"); pow2=new Audio(s+"pow2.ogg"); pow3=new Audio(s+"pow3.ogg"); pow4=new Audio(s+"pow4.ogg"); frames = 0; } function rasterizePoint(x,y,z){ var p,d; x-=playerX; y-=playerY; z-=playerZ; p=Math.atan2(x,z); d=Math.sqrt(x*x+z*z); x=Math.sin(p-yaw)*d; z=Math.cos(p-yaw)*d; p=Math.atan2(y,z); d=Math.sqrt(y*y+z*z); y=Math.sin(p-pitch)*d; z=Math.cos(p-pitch)*d; var rx1=-1000,ry1=1,rx2=1000,ry2=1,rx3=0,ry3=0,rx4=x,ry4=z,uc=(ry4-ry3)*(rx2-rx1)-(rx4-rx3)*(ry2-ry1); if(!uc) return {x:0,y:0,d:-1}; var ua=((rx4-rx3)*(ry1-ry3)-(ry4-ry3)*(rx1-rx3))/uc; var ub=((rx2-rx1)*(ry1-ry3)-(ry2-ry1)*(rx1-rx3))/uc; if(!z)z=.000000001; if(ua>0&&ua<1&&ub>0&&ub<1){ return { x:cx+(rx1+ua*(rx2-rx1))*scale, y:cy+y/z*scale, d:Math.sqrt(x*x+y*y+z*z) }; }else{ return { x:cx+(rx1+ua*(rx2-rx1))*scale, y:cy+y/z*scale, d:-1 }; } } function spawnSeed(){ seed=new Object(); seed.x=-50+Math.random()*100; seed.y=25; seed.z=-50+Math.random()*100; seed.vx=.1-Math.random()*.2; seed.vy=-1.5;//*(1+Math.random()/2); seed.vz=.1-Math.random()*.2; seed.born=frames; seeds.push(seed); } function splode(x,y,z){ t=5+parseInt(Math.random()*150); sparkV=1+Math.random()*2.5; type=parseInt(Math.random()*3); switch(type){ case 0: pic1=parseInt(Math.random()*10); break; case 1: pic1=parseInt(Math.random()*10); do{ pic2=parseInt(Math.random()*10); }while(pic2==pic1); break; case 2: pic1=parseInt(Math.random()*10); do{ pic2=parseInt(Math.random()*10); }while(pic2==pic1); do{ pic3=parseInt(Math.random()*10); }while(pic3==pic1 || pic3==pic2); break; } for(m=1;m<t;++m){ spark=new Object(); spark.x=x; spark.y=y; spark.z=z; p1=pi*2*Math.random(); p2=pi*Math.random(); v=sparkV*(1+Math.random()/6) spark.vx=Math.sin(p1)*Math.sin(p2)*v; spark.vz=Math.cos(p1)*Math.sin(p2)*v; spark.vy=Math.cos(p2)*v; switch(type){ case 0: spark.img=sparkPics[pic1]; break; case 1: spark.img=sparkPics[parseInt(Math.random()*2)?pic1:pic2]; break; case 2: switch(parseInt(Math.random()*3)){ case 0: spark.img=sparkPics[pic1]; break; case 1: spark.img=sparkPics[pic2]; break; case 2: spark.img=sparkPics[pic3]; break; } break; } spark.radius=25+Math.random()*50; spark.alpha=1; spark.trail=new Array(); sparks.push(spark); } switch(parseInt(Math.random()*4)){ case 0: pow=new Audio(s+"pow1.ogg"); break; case 1: pow=new Audio(s+"pow2.ogg"); break; case 2: pow=new Audio(s+"pow3.ogg"); break; case 3: pow=new Audio(s+"pow4.ogg"); break; } d=Math.sqrt((x-playerX)*(x-playerX)+(y-playerY)*(y-playerY)+(z-playerZ)*(z-playerZ)); pow.volume=1.5/(1+d/10); pow.play(); } function doLogic(){ if(seedTimer<frames){ seedTimer=frames+seedInterval*Math.random()*10; spawnSeed(); } for(i=0;i<seeds.length;++i){ seeds[i].vy+=gravity; seeds[i].x+=seeds[i].vx; seeds[i].y+=seeds[i].vy; seeds[i].z+=seeds[i].vz; if(frames-seeds[i].born>seedLife){ splode(seeds[i].x,seeds[i].y,seeds[i].z); seeds.splice(i,1); } } for(i=0;i<sparks.length;++i){ if(sparks[i].alpha>0 && sparks[i].radius>5){ sparks[i].alpha-=.01; sparks[i].radius/=1.02; sparks[i].vy+=gravity; point=new Object(); point.x=sparks[i].x; point.y=sparks[i].y; point.z=sparks[i].z; if(sparks[i].trail.length){ x=sparks[i].trail[sparks[i].trail.length-1].x; y=sparks[i].trail[sparks[i].trail.length-1].y; z=sparks[i].trail[sparks[i].trail.length-1].z; d=((point.x-x)*(point.x-x)+(point.y-y)*(point.y-y)+(point.z-z)*(point.z-z)); if(d>9){ sparks[i].trail.push(point); } }else{ sparks[i].trail.push(point); } if(sparks[i].trail.length>5)sparks[i].trail.splice(0,1); sparks[i].x+=sparks[i].vx; sparks[i].y+=sparks[i].vy; sparks[i].z+=sparks[i].vz; sparks[i].vx/=1.075; sparks[i].vy/=1.075; sparks[i].vz/=1.075; }else{ sparks.splice(i,1); } } p=Math.atan2(playerX,playerZ); d=Math.sqrt(playerX*playerX+playerZ*playerZ); d+=Math.sin(frames/80)/1.25; t=Math.sin(frames/200)/40; playerX=Math.sin(p+t)*d; playerZ=Math.cos(p+t)*d; yaw=pi+p+t; } function rgb(col){ var r = parseInt((.5+Math.sin(col)*.5)*16); var g = parseInt((.5+Math.cos(col)*.5)*16); var b = parseInt((.5-Math.sin(col)*.5)*16); return "#"+r.toString(16)+g.toString(16)+b.toString(16); } function draw(){ ctx.clearRect(0,0,cx*2,cy*2); ctx.fillStyle="#ff8"; for(i=-100;i<100;i+=3){ for(j=-100;j<100;j+=4){ x=i;z=j;y=25; point=rasterizePoint(x,y,z); if(point.d!=-1){ size=250/(1+point.d); d = Math.sqrt(x * x + z * z); a = 0.75 - Math.pow(d / 100, 6) * 0.75; if(a>0){ ctx.globalAlpha = a; ctx.fillRect(point.x-size/2,point.y-size/2,size,size); } } } } ctx.globalAlpha=1; for(i=0;i<seeds.length;++i){ point=rasterizePoint(seeds[i].x,seeds[i].y,seeds[i].z); if(point.d!=-1){ size=200/(1+point.d); ctx.fillRect(point.x-size/2,point.y-size/2,size,size); } } point1=new Object(); for(i=0;i<sparks.length;++i){ point=rasterizePoint(sparks[i].x,sparks[i].y,sparks[i].z); if(point.d!=-1){ size=sparks[i].radius*200/(1+point.d); if(sparks[i].alpha<0)sparks[i].alpha=0; if(sparks[i].trail.length){ point1.x=point.x; point1.y=point.y; switch(sparks[i].img){ case sparkPics[0]:ctx.strokeStyle="#f84";break; case sparkPics[1]:ctx.strokeStyle="#84f";break; case sparkPics[2]:ctx.strokeStyle="#8ff";break; case sparkPics[3]:ctx.strokeStyle="#fff";break; case sparkPics[4]:ctx.strokeStyle="#4f8";break; case sparkPics[5]:ctx.strokeStyle="#f44";break; case sparkPics[6]:ctx.strokeStyle="#f84";break; case sparkPics[7]:ctx.strokeStyle="#84f";break; case sparkPics[8]:ctx.strokeStyle="#fff";break; case sparkPics[9]:ctx.strokeStyle="#44f";break; } for(j=sparks[i].trail.length-1;j>=0;--j){ point2=rasterizePoint(sparks[i].trail[j].x,sparks[i].trail[j].y,sparks[i].trail[j].z); if(point2.d!=-1){ ctx.globalAlpha=j/sparks[i].trail.length*sparks[i].alpha/2; ctx.beginPath(); ctx.moveTo(point1.x,point1.y); ctx.lineWidth=1+sparks[i].radius*10/(sparks[i].trail.length-j)/(1+point2.d); ctx.lineTo(point2.x,point2.y); ctx.stroke(); point1.x=point2.x; point1.y=point2.y; } } } ctx.globalAlpha=sparks[i].alpha; ctx.drawImage(sparks[i].img,point.x-size/2,point.y-size/2,size,size); } } } function frame(){ if(frames>100000){ seedTimer=0; frames=0; } frames++; draw(); doLogic(); requestAnimationFrame(frame); } window.addEventListener("resize",()=>{ canvas.width=canvas.clientWidth; canvas.height=canvas.clientHeight; cx=canvas.width/2; cy=canvas.height/2; }); initVars(); frame(); </script> <script src="js/index.js"></script> </body> </html>

下面是引用的js源码，js渲染需要比较多的代码。

如果你不希望有ui界面上的文字，要纯的烟花，可以在js文件中将 S.UI.simulate(‘除夕节日快乐’);进行注释。

三：js烟花效果

还是先看效果，录制的效果不太好，自己可以去尝试，也是非常好看的。下面看源码,z这个比较简单，因为没有那么多渲染

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://· = y + "px"; }, setVisible: function(b) { this.p.style.display = b ? "block" : "none"; } } var fireworks = function() { var fires = new Array(); var count = 150; var fl = 250; var vpx = 500; var vpy = 300; var gravity = .5; var floor = 200; var bounce = -.8; var timer; var wind = ((Math.floor(Math.random()*3) + 3)/10)*(Math.random()*2 - 1 > 0 ? 1 : -1)*.25; var wpos = 0; var wcount; return { init: function() { wcount = 50 + Math.floor(Math.random() * 100); for (var i=0; i<count; i++) { var color = 0xFF0000; color = (Math.random() * 0xFFFFFF).toString(16).toString().split(".")[0]; while(color.length < 6) { color = "0" + color; } var fire = new Fire(12, color); fires.push(fire); fire.ypos = -100; fire.vz = Math.random() * 6 - 3; fire.vx = (Math.random()*2 - 1)*2 ; fire.vy = Math.random()*-15 - 15; fire.x = 500 fire.y = 600; fire.append(document.body); } var that = this; timer = setInterval(function() { wpos++; if (wpos >= wcount) { wpos = 0; wcount = 50 + Math.floor(Math.random() * 100); wind = ((Math.floor(Math.random()*3) + 3)/10)*(Math.random()*2 - 1 > 0 ? 1 : -1)*.25; } for (var i=0;i<count; i++) { that.move(fires[i]); } }, 30); }, move: function(fire) { fire.vy += gravity; fire.x += fire.vx; fire.y += fire.vy; fire.vx += wind; fire.setPosition(fire.x, fire.y); if (fire.x < 0 || fire.x >1000 || fire.y < 0 || fire.y > 600) { fire.vx = (Math.random()*2 - 1)*2; fire.vy = Math.random()*-15 - 15; fire.x = 500; fire.y = 600; fire.setPosition(fire.x, fire.y); } } } } fireworks().init(); </script> </html> 四：用python实现的烟花（可以选择背景）

还是先看效果源码如下 main.py

import tkinter as tk from PIL import Image, ImageTk from time import time, sleep from random import choice, uniform, randint from particle import Particle # 颜色选项 colors = ['red', 'blue', 'yellow', 'white', 'green', 'orange', 'purple', 'seagreen', 'indigo', 'cornflowerblue'] HEIGHT = 800 WIDTH = 1200 def simulate(cv): """ 循环调用保持不停 """ t = time() explode_points = [] wait_time = randint(10, 100) numb_explode = randint(5, 50) # 创建一个所有粒子同时扩大的二维列表 for point in range(numb_explode): objects = [] x_cordi = randint(0.05 * WIDTH, 0.95 * WIDTH) y_cordi = randint(0.05 * HEIGHT, 0.95 * HEIGHT) speed = uniform(0.2, 2.) size = uniform(0.2, 3) color = choice(colors) explosion_speed = uniform(0.1, 0.5) explosion_radius = randint(5, 15) total_particles = randint(20, 50) for i in range(1, total_particles): r = Particle(cv, idx=i, total=total_particles, explosion_speed=explosion_speed, explosion_radius=explosion_radius, x=x_cordi, y=y_cordi, vx=speed, vy=speed, color=color, size=size, lifespan=abs(uniform(0.2, 1.75))) objects.append(r) explode_points.append(objects) total_time = .0 # 1.8s内一直扩大 while total_time < 1.8: sleep(0.01) tnew = time() t, dt = tnew, tnew - t for point in explode_points: for item in point: item.update(dt) cv.update() total_time += dt # 循环调用 root.after(wait_time, simulate, cv) def close(*ignore): """退出程序、关闭窗口""" global root root.quit() if __name__ == '__main__': root = tk.Tk() cv = tk.Canvas(root, height=HEIGHT, width=WIDTH) image = Image.open("D:\\python\\pydoc\\pystudy\\project1\\fireworks-master\\__pycache__\\g.jpg") photo = ImageTk.PhotoImage(image) cv.create_image(0, 0, image=photo, anchor='nw') cv.pack() root.protocol("WM_DELETE_WINDOW", close) root.after(100, simulate, cv) root.mainloop()

particle.py

from math import sin, cos, radians # 模拟重力 GRAVITY = 0.1 class Particle(object): def __init__(self, cv, idx, total, explosion_speed, explosion_radius=1, x=0., y=0., vx=0., vy=0., size=2., color='red', lifespan=2): """ 粒子在空中随机生成随机，变成一个圈、下坠、消失属性: - id: 粒子的id - x, y: 粒子的坐标 - vx, vy: 在坐标的变化速度 - total: 总数 - age: 粒子存在的时长 - color: 颜色 - cv: 画布 - lifespan: 最高存在时长 """ self.id = idx self.x = x self.y = y self.initial_speed = explosion_speed self.explosion_radius = explosion_radius self.vx = vx self.vy = vy self.total = total self.age = 0 self.color = color self.cv = cv self.cid = self.cv.create_oval( x - size, y - size, x + size, y + size, fill=self.color) self.lifespan = lifespan def update(self, dt): self.age += dt # 粒子范围扩大 if self.alive() and self.expand(): move_x = cos(radians(self.id * 360 / self.total)) * self.initial_speed move_y = sin(radians(self.id * 360 / self.total)) * self.initial_speed self.cv.move(self.cid, move_x * self.explosion_radius, move_y * self.explosion_radius) self.vx = move_x / (float(dt) * 1000) # 以自由落体坠落 elif self.alive(): move_x = cos(radians(self.id * 360 / self.total)) # we technically don't need to update x, y because move will do the job self.cv.move(self.cid, self.vx + move_x, self.vy + GRAVITY * dt) self.vy += GRAVITY * dt # 移除超过最高时长的粒子 elif self.cid is not None: self.cv.delete(self.cid) self.cid = None # 扩大的时间 def expand(self): return self.age <= 1.2 # 粒子是否在最高存在时长内 def alive(self): return self.age <= self.lifespan

然后自己存放一个放置图片的路径即可