pixi+tinycolor实现canvas高空瀑布动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：pixi+tinycolor实现canvas高空瀑布动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
<style>
    body {
  background: #222;
  color: white;
}

#container {
  box-shadow: inset 0 1px 0 #444, 0 -1px 0 #000;
  height: 100vh;
  width: 100vw;
  position: absolute;
  left: 0;
  top: 0;
  margin: 0;
  will-change: transform;
  -webkit-transform: translateZ(0);
          transform: translateZ(0);
}

canvas#waterfall {
  display: block;
  margin: 0 auto;
  width: 30%;
  height: 55%;
  will-change: transform;
  -webkit-transform: translateZ(0);
          transform: translateZ(0);
}

.emma {
  height: 100vh;
  width: 100%;
  position: absolute;
  left: 0;
  top: 0;
  margin: 0;
}

h1 {
  color: #0af;
  font-size: 30vw;
}

canvas#surface {
  -webkit-animation: fade-in 3000ms forwards;
          animation: fade-in 3000ms forwards;
  display: block;
  left: 0;
  position: absolute;
  top: 0;
  z-index: -1;
}

@-webkit-keyframes fade-in {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes fade-in {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
</style>
</head>

<body>
    <div id="container">
        <canvas id="waterfall"></canvas> <div class="emma flex">
            <div>
            </div>
        </div>
    </div>
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/pixi.min.js"></script>
    <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/tinycolor.min.js"></script>

    <script>
        +!~-(function(PIXI, window, document, undefined) {
            var waterfallCanvas = function(c, cw, ch) {
                var _this = this;
                this.c = c;
                this.ctx = c.getContext('2d');
                this.cw = cw;
                this.ch = ch;
                this.particles = [];
                this.particleRate = 6;
                this.gravity = 0.15;
                this.init = function() {
                    this.loop();
                };
                this.reset = function() {
                    this.ctx.clearRect(0, 0, this.cw, this.ch);
                    this.particles = [];
                };
                this.rand = function(rMi, rMa) {
                    return ~~((Math.random() * (rMa - rMi + 1)) + rMi);
                };
                this.Particle = function() {
                    var newWidth = _this.rand(1, 20);
                    var newHeight = _this.rand(1, 45);
                    this.x = _this.rand(10 + (newWidth / 2), _this.cw - 10 - (newWidth / 2));
                    this.y = -newHeight;
                    this.vx = 0;
                    this.vy = 0;
                    this.width = newWidth;
                    this.height = newHeight;
                    this.hue = _this.rand(200, 220);
                    this.saturation = _this.rand(30, 60);
                    this.lightness = _this.rand(30, 60);
                };
                this.Particle.prototype.update = function(i) {
                    this.vx += this.vx;
                    this.vy += _this.gravity;
                    this.x += this.vx;
                    this.y += this.vy;
                };
                this.Particle.prototype.render = function() {
                    _this.ctx.strokeStyle = 'hsla(' + this.hue + ', ' + this.saturation + '%, ' + this.lightness + '%, .05)';
                    _this.ctx.beginPath();
                    _this.ctx.moveTo(this.x, this.y);
                    _this.ctx.lineTo(this.x, this.y + this.height);
                    _this.ctx.lineWidth = this.width / 2;
                    _this.ctx.lineCap = 'round';
                    _this.ctx.stroke();
                };
                this.Particle.prototype.renderBubble = function() {
                    _this.ctx.fillStyle = 'hsla(' + this.hue + ', 40%, 40%, 1)';
                    _this.ctx.fillStyle = 'hsla(' + this.hue + ', ' + this.saturation + '%, ' + this.lightness + '%, .3)';
                    _this.ctx.beginPath();
                    _this.ctx.arc(this.x + this.width / 2, _this.ch - 20 - _this.rand(0, 10), _this.rand(1, 8), 0, Math.PI * 2, false);
                    _this.ctx.fill();
                };
                this.createParticles = function() {
                    var i = this.particleRate;
                    while (i--) {
                        this.particles.push(new this.Particle());
                    }
                };
                this.removeParticles = function() {
                    var i = this.particleRate;
                    while (i--) {
                        var p = this.particles[i];
                        if (p.y > _this.ch - 20 - p.height) {
                            p.renderBubble();
                            _this.particles.splice(i, 1);
                        }
                    }
                };
                this.updateParticles = function() {
                    var i = this.particles.length;
                    while (i--) {
                        var p = this.particles[i];
                        p.update(i);
                    }
                };
                this.renderParticles = function() {
                    var i = this.particles.length;
                    while (i--) {
                        var p = this.particles[i];
                        p.render();
                    }
                };
                this.clearCanvas = function() {
                    this.ctx.globalCompositeOperation = 'destination-out';
                    this.ctx.fillStyle = 'rgba(255,255,255,.06)';
                    this.ctx.fillRect(0, 0, this.cw, this.ch);
                    this.ctx.globalCompositeOperation = 'lighter';
                };
                this.loop = function() {
                    var loopIt = function() {
                        requestAnimationFrame(loopIt, _this.c);
                        _this.clearCanvas();
                        _this.createParticles();
                        _this.updateParticles();
                        _this.renderParticles();
                        _this.removeParticles();
                    };
                    loopIt();
                };
            };
            var isCanvasSupported = function() {
                var elem = document.createElement('canvas');
                return !!(elem.getContext && elem.getContext('2d'));
            };
            var setupRAF = function() {
                var lastTime = 0;
                var vendors = ['ms',
                    'moz',
                    'webkit',
                    'o'];
                for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
                    window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
                    window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] || window[vendors[x] + 'CancelRequestAnimationFrame'];
                }
                if (!window.requestAnimationFrame) {
                    window.requestAnimationFrame = function(callback, element) {
                        var currTime = new Date().getTime();
                        var timeToCall =.........完整代码请登录后点击上方下载按钮下载查看