新春快乐
- 一： `C语言` -- 烟花
- 二：`Python` -- 春联
- 三：`Python` -- 烟花
- 四：`HTML` -- 烟花
一： C语言 – 烟花
运行效果：
#include <graphics.h>
#include <math.h>
#include <time.h>
#include <stdio.h>
#define MAXNUM 15
#define WIDTH 640
#define HEIGHT 480
#define PI 3.1415926
struct Fire
{
int nowx;
int nowy;
int endy;
int radio;
int explode;
int rgb[3];
COLORREF color;
}fire[MAXNUM];
void Init()
{
for (int i = 0; i < MAXNUM; i++)
{
fire[i].nowx = rand() % WIDTH;
fire[i].nowy = HEIGHT + rand() % 250 + 50;
fire[i].endy = rand() % 100 + 10;
fire[i].radio = rand() % 50 + 120;
fire[i].explode = 0;
int c[][3] = { {255, 0, 0}, {210, 190, 255}, {255, 120, 0}, {255, 0, 150}, {255, 240, 100}, {10, 255, 255}, {160, 10, 255}, {255, 200, 60} };
int n = rand() % 8;
fire[i].color = RGB(c[n][0], c[n][1], c[n][2]);
fire[i].rgb[0] = c[n][0];
fire[i].rgb[1] = c[n][1];
fire[i].rgb[2] = c[n][2];
}
}
void Draw()
{
for (int i = 0; i < MAXNUM; i++)
{
if (fire[i].nowy > fire[i].endy)
{
for (int size = 5; size > 0; size--)
{
int temp[] = { fire[i].rgb[0], fire[i].rgb[1], fire[i].rgb[2] };
for (int k = 0; k < 3; k++)
{
temp[k] += 50 * (5 - size);
if (temp[k] > 255) temp[k] = 255;
}
setfillcolor(RGB(temp[0], temp[1], temp[2]));
solidcircle(fire[i].nowx, fire[i].nowy + 15 * (10 - size), size);
}
}
else
{
for (int a = 0; a < 360; a += 30)
{
for (int size = 5; size > 0; size--)
{
int x = cos(a * PI / 180.0) * (fire[i].explode + size * 10) + fire[i].nowx;
int y = sin(a * PI / 180.0) * (fire[i].explode + size * 10) + fire[i].nowy + fire[i].radio / 2;
int temp[] = { fire[i].rgb[0], fire[i].rgb[1], fire[i].rgb[2] };
for (int k = 0; k < 3; k++)
{
temp[k] += 50 * (5 - size);
if (temp[k] > 255) temp[k] = 255;
}
setfillcolor(RGB(temp[0], temp[1], temp[2]));
solidcircle(x, y + (HEIGHT - y) * 0.1 + size * (size - 2), size);
}
}
}
}
}
void Move()
{
for (int i = 0; i < MAXNUM; i++)
{
if (fire[i].nowy > fire[i].endy)
{
fire[i].nowy -= 3;
}
else
{
if (fire[i].explode >= fire[i].radio)
{
fire[i].nowx = rand() % WIDTH;
fire[i].nowy = HEIGHT + rand() % 250 + 50;
fire[i].endy = rand() % 100 + 10;
fire[i].radio = rand() % 50 + 120;
fire[i].explode = 0;
int c[][3] = { {255, 0, 0}, {210, 190, 255}, {255, 120, 0}, {255, 0, 150}, {255, 240, 100}, {10, 255, 255}, {160, 10, 255}, {255, 200, 60} };
int n = rand() % 8;
fire[i].color = RGB(c[n][0], c[n][1], c[n][2]);
fire[i].rgb[0] = c[n][0];
fire[i].rgb[1] = c[n][1];
fire[i].rgb[2] = c[n][2];
}
else fire[i].explode++;
}
}
}
int main()
{
srand(time(NULL));
initgraph(640, 480);
Init();
BeginBatchDraw();
while (true)
{
cleardevice();
Draw();
Move();
FlushBatchDraw();
Sleep(2);
}
EndBatchDraw();
closegraph();
return 0;
}
二：Python – 春联
运行效果：
from distutils.core import setup
from turtle import *
bgcolor("#FFFF00")
pensize(5)
setup(1000, 1000)
update()
fillcolor("red")
pencolor("firebrick2")
pu()
goto(-330, 250)
seth(0)
pd()
begin_fill()
for i in range(2):
fd(360)
left(90)
fd(100)
left(90)
end_fill()
pencolor("black")
pu()
texts = ["常", "乐", "安", "宁"]
for text in texts:
fd(72)
write(text, align="center", font=("华文行楷", 60, "normal"))
pencolor("firebrick2")
goto(-380, 200)
seth(180)
pd()
begin_fill()
for i in range(2):
fd(100)
left(90)
fd(560)
left(90)
end_fill()
pu()
goto(-430, 200)
pencolor("black")
seth(-90)
texts = "常怀欣喜心常乐"
for text in texts:
fd(80)
write(text, align="center", font=("华文行楷", 60, "normal"))
pencolor("firebrick2")
goto(180, 200)
seth(180)
pd()
begin_fill()
for i in range(2):
fd(100)
left(90)
fd(560)
left(90)
end_fill()
pu()
goto(130, 200)
pencolor("black")
seth(-90)
texts = "欣悦四季心安宁"
for text in texts:
fd(80)
write(text, align="center", font=("华文行楷", 60, "normal"))
ht()
done()
三：Python – 烟花
运行效果：
import pygame
from random import randint
from random import uniform
from random import choice
import math
vector = pygame.math.Vector2
# 重力变量
gravity = vector(0, 0.3)
# 控制窗口的大小
DISPLAY_WIDTH = DISPLAY_HEIGHT = 800
# 颜色选项
trail_colours = [(45, 45, 45), (60, 60, 60), (75, 75, 75), (125, 125, 125), (150, 150, 150)]
dynamic_offset = 1
static_offset = 3
class Firework:
def __init__(self):
# 随机颜色
self.colour = (randint(0, 255), randint(0, 255), randint(0, 255))
self.colours = (
(randint(0, 255), randint(0, 255), randint(0, 255)),
(randint(0, 255), randint(0, 255), randint(0, 255)),
(randint(0, 255), randint(0, 255), randint(0, 255)))
self.firework = Particle(randint(0, DISPLAY_WIDTH), DISPLAY_HEIGHT, True,
self.colour)
self.exploded = False
self.particles = []
self.min_max_particles = vector(100, 225)
def update(self, win): # 每帧调用
if not self.exploded:
self.firework.apply_force(gravity)
self.firework.move()
for tf in self.firework.trails:
tf.show(win)
self.show(win)
if self.firework.vel.y >= 0:
self.exploded = True
self.explode()
else:
for particle in self.particles:
particle.apply_force(vector(gravity.x + uniform(-1, 1) / 20, gravity.y / 2 + (randint(1, 8) / 100)))
particle.move()
for t in particle.trails:
t.show(win)
particle.show(win)
def explode(self):
# amount 数量
amount = randint(self.min_max_particles.x, self.min_max_particles.y)
for i in range(amount):
self.particles.append(Particle(self.firework.pos.x, self.firework.pos.y, False, self.colours))
def show(self, win):
pygame.draw.circle(win, self.colour, (int(self.firework.pos.x), int(self.firework.pos.y)), self.firework.size)
def remove(self):
if self.exploded:
for p in self.particles:
if p.remove is True:
self.particles.remove(p)
if len(self.particles) == 0:
return True
else:
return False
class Particle:
def __init__(self, x, y, firework, colour):
self.firework = firework
self.pos = vector(x, y)
self.origin = vector(x, y)
self.radius = 20
self.remove = False
self.explosion_radius = randint(5, 18)
self.life = 0
self.acc = vector(0, 0)
self.trails = []
self.prev_posx = [-10] * 10
self.prev_posy = [-10] * 10
if self.firework:
self.vel = vector(0, -randint(17, 20))
self.size = 5
self.colour = colour
for i in range(5):
self.trails.append(Trail(i, self.size, True))
else:
self.vel = vector(uniform(-1, 1), uniform(-1, 1))
self.vel.x *= randint(7, self.explosion_radius + 2)
self.vel.y *= randint(7, self.explosion_radius + 2)
# 向量
self.size = randint(2, 4)
self.colour = choice(colour)
# 5 个 tails总计
for i in range(5):
self.trails.append(Trail(i, self.size, False))
def apply_force(self, force):
self.acc += force
def move(self):
if not self.firework:
self.vel.x *= 0.8
self.vel.y *= 0.8
self.vel += self.acc
self.pos += self.vel
self.acc *= 0
if self.life == 0 and not self.firework: # 检查粒子的爆炸范围
distance = math.sqrt((self.pos.x - self.origin.x) ** 2 + (self.pos.y - self.origin.y) ** 2)
if distance > self.explosion_radius:
self.remove = True
self.decay()
self.trail_update()
self.life += 1
def show(self, win):
pygame.draw.circle(win, (self.colour[0], self.colour[1], self.colour[2], 0), (int(self.pos.x), int(self.pos.y)),
self.size)
def decay(self): # random decay of the particles
if 50 > self.life > 10: # early stage their is a small chance of decay
ran = randint(0, 30)
if ran == 0:
self.remove = True
elif self.life > 50:
ran = randint(0, 5)
if ran == 0:
self.remove = True
def trail_update(self):
self.prev_posx.pop()
self.prev_posx.insert(0, int(self.pos.x))
self.prev_posy.pop()
self.prev_posy.insert(0, int(self.pos.y))
for n, t in enumerate(self.trails):
if t.dynamic:
t.get_pos(self.prev_posx[n + dynamic_offset], self.prev_posy[n + dynamic_offset])
else:
t.get_pos(self.prev_posx[n + static_offset], self.prev_posy[n + static_offset])
class Trail:
def __init__(self, n, size, dynamic):
self.pos_in_line = n
self.pos = vector(-10, -10)
self.dynamic = dynamic
if self.dynamic:
self.colour = trail_colours[n]
self.size = int(size - n / 2)
else:
self.colour = (255, 255, 200)
self.size = size - 2
if self.size < 0:
self.size = 0
def get_pos(self, x, y):
self.pos = vector(x, y)
def show(self, win):
pygame.draw.circle(win, self.colour, (int(self.pos.x), int(self.pos.y)), self.size)
def update(win, fireworks):
for fw in fireworks:
fw.update(win)
if fw.remove():
fireworks.remove(fw)
pygame.display.update()
def main():
pygame.init()
pygame.font.init()
pygame.display.set_caption("祝您新年快乐") # 标题
background = pygame.image.load("./5.png") # 背景
sound_wav = pygame.mixer.music.load("2.mp3")
pygame.mixer.music.play()
pygame.init()
# 加载背景音乐
'''pygame.mixer.music.load("./res/音乐文件名")
# 循环播放背景音乐
pygame.mixer.music.play(-1)
# 停止背景音乐
pygame.mixer.music.stop()
# 加载音效
boom_sound = pygame.mixer.Sound("./res/音效名")
# 播放音效
boom_sound.play()
boom_sound.stop()
myfont = pygame.font.Font("simkai.TTF", 80)
myfont1 = pygame.font.Font("simkai.ttf", 30)
testsurface = myfont.render("虎虎生威", False, (0, 0, 0), (220, 20, 60))
testsurface1 = myfont1.render("", False, (251, 59, 85))'''
win = pygame.display.set_mode((DISPLAY_WIDTH, DISPLAY_HEIGHT))
clock = pygame.time.Clock()
fireworks = [Firework() for i in range(2)]
running = True
while running:
clock.tick(60)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_1: # 按下 1
fireworks.append(Firework())
if event.key == pygame.K_2: # 按下 2 加入10个烟花
for i in range(10):
fireworks.append(Firework())
if event.key == pygame.K_3: # 按下 3 加入100个烟花
for i in range(100):
fireworks.append(Firework())
win.fill((20, 20, 30))
if randint(0, 20) == 1: # 创建新的烟花
fireworks.append(Firework())
update(win, fireworks)
pygame.quit()
quit()
if __name__ == 'main':
main()
四：HTML – 烟花
运行效果：
<!DOCTYPE html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
<title>夜空烟花</title>
<script type="text/javascript" src="http://g.huceo.com/weixin/qw/jquery.min.js"></script>
<script type="text/javascript">
</script>
<style>
body {
background: #000;
margin: 0;
}
canvas {
cursor: crosshair;
display: block;
}
.STYLE1 {color: #333333}
</style>
</head>
<div style="text-align:center;clear:both">
</div>
<canvas id="canvas"><span class="STYLE1">Open IE effect more perfect </span></canvas>
<script>
window.requestAnimFrame = ( function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
function( callback ) {
window.setTimeout( callback, 1000 / 60 );
};
})();
var canvas = document.getElementById( 'canvas' ),
ctx = canvas.getContext( '2d' ),
cw = window.innerWidth,
ch = window.innerHeight,
fireworks = [],
particles = [],
hue = 120,
limiterTotal = 5,
limiterTick = 0,
timerTotal = 80,
timerTick = 0,
mousedown = false,
mx,
my;
canvas.width = cw;
canvas.height = ch;
function random( min, max ) {
return Math.random() * ( max - min ) + min;
}
function calculateDistance( p1x, p1y, p2x, p2y ) {
var xDistance = p1x - p2x,
yDistance = p1y - p2y;
return Math.sqrt( Math.pow( xDistance, 2 ) + Math.pow( yDistance, 2 ) );
}
function Firework( sx, sy, tx, ty ) {
this.x = sx;
this.y = sy;
this.sx = sx;
this.sy = sy;
this.tx = tx;
this.ty = ty;
this.distanceToTarget = calculateDistance( sx, sy, tx, ty );
this.distanceTraveled = 0;
this.coordinates = [];
this.coordinateCount = 3;
while( this.coordinateCount-- ) {
this.coordinates.push( [ this.x, this.y ] );
}
this.angle = Math.atan2( ty - sy, tx - sx );
this.speed = 2;
this.acceleration = 1.05;
this.brightness = random( 50, 70 );
this.targetRadius = 1;
}
Firework.prototype.update = function( index ) {
this.coordinates.pop();
this.coordinates.unshift( [ this.x, this.y ] );
if( this.targetRadius < 8 ) {
this.targetRadius += 0.3;
} else {
this.targetRadius = 1;
}
this.speed *= this.acceleration;
var vx = Math.cos( this.angle ) * this.speed,
vy = Math.sin( this.angle ) * this.speed;
this.distanceTraveled = calculateDistance( this.sx, this.sy, this.x + vx, this.y + vy );
if( this.distanceTraveled >= this.distanceToTarget ) {
createParticles( this.tx, this.ty );
fireworks.splice( index, 1 );
} else {
this.x += vx;
this.y += vy;
}
}
Firework.prototype.draw = function() {
ctx.beginPath();
ctx.moveTo( this.coordinates[ this.coordinates.length - 1][ 0 ], this.coordinates[ this.coordinates.length - 1][ 1 ] );
ctx.lineTo( this.x, this.y );
ctx.strokeStyle = 'hsl(' + hue + ', 100%, ' + this.brightness + '%)';
ctx.stroke();
ctx.beginPath();
ctx.arc( this.tx, this.ty, this.targetRadius, 0, Math.PI * 2 );
ctx.stroke();
}
function Particle( x, y ) {
this.x = x;
this.y = y;
this.coordinates = [];
this.coordinateCount = 5;
while( this.coordinateCount-- ) {
this.coordinates.push( [ this.x, this.y ] );
}
this.angle = random( 0, Math.PI * 2 );
this.speed = random( 1, 10 );
this.friction = 0.95;
this.gravity = 1;
this.hue = random( hue - 20, hue + 20 );
this.brightness = random( 50, 80 );
this.alpha = 1;
this.decay = random( 0.015, 0.03 );
}
Particle.prototype.update = function( index ) {
this.coordinates.pop();
this.coordinates.unshift( [ this.x, this.y ] );
this.speed *= this.friction;
this.x += Math.cos( this.angle ) * this.speed;
this.y += Math.sin( this.angle ) * this.speed + this.gravity;
this.alpha -= this.decay;
if( this.alpha <= this.decay ) {
particles.splice( index, 1 );
}
}
Particle.prototype.draw = function() {
ctx. beginPath();
ctx.moveTo( this.coordinates[ this.coordinates.length - 1 ][ 0 ], this.coordinates[ this.coordinates.length - 1 ][ 1 ] );
ctx.lineTo( this.x, this.y );
ctx.strokeStyle = 'hsla(' + this.hue + ', 100%, ' + this.brightness + '%, ' + this.alpha + ')';
ctx.stroke();
}
function createParticles( x, y ) {
var particleCount = 30;
while( particleCount-- ) {
particles.push( new Particle( x, y ) );
}
}
function loop() {
requestAnimFrame( loop );
hue += 0.5;
ctx.globalCompositeOperation = 'destination-out';
ctx.fillStyle = 'rgba(0, 0, 0, 0.5)';
ctx.fillRect( 0, 0, cw, ch );
ctx.globalCompositeOperation = 'lighter';
var i = fireworks.length;
while( i-- ) {
fireworks[ i ].draw();
fireworks[ i ].update( i );
}
var i = particles.length;
while( i-- ) {
particles[ i ].draw();
particles[ i ].update( i );
}
if( timerTick >= timerTotal ) {
if( !mousedown ) {
fireworks.push( new Firework( cw / 2, ch, random( 0, cw ), random( 0, ch / 2 ) ) );
timerTick = 0;
}
} else {
timerTick++;
}
if( limiterTick >= limiterTotal ) {
if( mousedown ) {
fireworks.push( new Firework( cw / 2, ch, mx, my ) );
limiterTick = 0;
}
} else {
limiterTick++;
}
}
canvas.addEventListener( 'mousemove', function( e ) {
mx = e.pageX - canvas.offsetLeft;
my = e.pageY - canvas.offsetTop;
});
canvas.addEventListener( 'mousedown', function( e ) {
e.preventDefault();
mousedown = true;
});
canvas.addEventListener( 'mouseup', function( e ) {
e.preventDefault();
mousedown = false;
});
window.onload = loop;
</script>
上述代码复制后即可使用，无素材
轻舟在这里祝大家新年快乐，龙年迎好运！！！
