Physics2DPlugin3+gsap实现canvas画布点击扩散动画效果代码-html代码-BFW代码库

Physics2DPlugin3+gsap实现canvas画布点击扩散动画效果代码

代码语言：html

所属分类：动画

代码描述：Physics2DPlugin3+gsap实现canvas画布点击扩散动画效果代码

代码标签： Physics2DPlugin gsap canvas 画布点击扩散动画

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 lang="en" >

<head>
  <meta charset="UTF-8">
  

  
  
<style>
body {
 background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center; 	
	overflow: hidden;
}

canvas {
	min-height: 100vh;
}
</style>


  
</head>

<body translate="no">
  <canvas id="canvas"></canvas>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/gsap.3.12.2.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/Physics2DPlugin3.min.js"></script>
      <script >
gsap.config({trialWarn: false});
console.clear()
let select = s => document.querySelector(s),
		canvas = select('#canvas'),
		ctx = canvas.getContext('2d'),
		particles = [],
		sizeObj = {width: window.innerWidth,
							 height: window.innerHeight
							},
		particleArray = [],
		bigCircleArray = [],
		smallCircleArray = [],
		colorArray = ["fec10e","fe744d","cc9edc","ff4b10","019bd9","a1e8af","979797","83c9f4","5c374c","302f4d"],
		mousePos = {
			x: sizeObj.width/2,
			y: sizeObj.height/2
		},
		particleArea = Math.min(sizeObj.width, sizeObj.height) * 0.2,
		numParticles = 66,
		step = 360/numParticles,
		clickCount = -1,
		oldColor = null,
		currentColor = null

colorArray = colorArray.map(x => Array.from(x)[0] == '#' ? x : `#${x}`);

class Particle {
  constructor(x, y, radius, color, scale, rotation, origin, opacity, duration) {		
   	this.x = x;
   	this.y = y;
   	this.radius = radius;
   	this.color = color;
   	this.scale = scale;
   	this.rotation = rotation;
   	this.origin = origin;
   	this.opacity = opacity;
   	this.duration = duration;
    }  
}

function bigCircleDuration () {
	let mapDuration, duration = 4;
/* 	if(mousePos.x < sizeObj.width * 0.3) {
		duration = gsap.utils.mapRange(0, sizeObj.width * 0.3, 1.5, 4, mousePos.x) 
	} else if(mousePos.x > sizeObj.width * 0.6) {
		duration = gsap.utils.mapRange(sizeObj.width * 0.6, sizeObj.width, 140, 1.5, mousePos.x) 
	} */
	return duration;
}

function removeParticle(particle, subParticleArray) {
	
	//remove the particle from sub array
	var particleIndex = subParticleArray.indexOf(particle);
	if (particleIndex !== -1) {
		subParticleArray.splice(particleIndex, 1);
	}	
	//remove the empty sub array from main particleArray
	if(subParticleArray.length == 0) {
		var subIndex = particleArray.indexOf(subParticleArray);
		if (subIndex !== -1) {
			particleArray.splice(subIndex, 1);
		}			
	}

}
function createAnimation() {
	clickCount++;
	oldColor = currentColor ? currentColor : gsap.utils.wrap(colorArray, clickCount+1);
	currentColor = (gsap.utils.wrap(colorArray, clickCount))
	let subParticleArray = []
	smallCircleArray = [];
	for(let i = 0; i < numParticles; i++) {
		let angle = i * step;
		let radius = gsap.utils.random(3, 12);
		let particleOrigin = [0,0];
		let particleDuration = gsap.utils.random(0.4, 1);
		let point = {
			x: (Math.cos(angle * Math.PI / 180) * gsap.utils.random(particleArea*0.082, particleArea)) + mousePos.x,
			y: (Math.sin(angle * Math.PI / 180) * gsap.utils.random(particleArea*0.082, particleArea)) + mousePos.y
		}
		let p = new Particle(point.x, point.y, radius , oldColor, 1, 0, particl.........完整代码请登录后点击上方下载按钮下载查看