webgl实现canvas光柱交叉波动模糊动画效果代码-html代码-BFW代码库

webgl实现canvas光柱交叉波动模糊动画效果代码

代码语言：html

所属分类：动画

代码描述：webgl实现canvas光柱交叉波动模糊动画效果代码

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 lang="en" >

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


  
  
</head>

<body translate="no">
  <script type="x-shader/x-fragment">#version 300 es
/*********
* made by Matthias Hurrle (@atzedent)
*/   
precision highp float;
out vec4 O;
uniform vec2 resolution;
uniform float time;
#define FC gl_FragCoord.xy
#define R resolution
#define T time
#define MN min(R.x,R.y)
#define S smoothstep
#define beat(a) pow(S(.4,.6,sin(3.1415/a*T)*.5+.5),5.)
float rnd(vec2 p) {
	p=fract(p*vec2(12.9898,78.233));
	p+=dot(p,p+34.56);
	return fract(p.x*p.y);
}
float spirals(vec2 uv) {
	float c=.0, d=.0, k=.35;
	for (float i=1.;i<8.;i++) {
		c+=abs(sin(T/i)*.05)/length(vec2(uv.y,sin(uv.y+T*i)*k)-uv.yx);
		vec2 p=uv;
		p.x-=sin(p.y+T*i)*k;
		p.y+=T*1.5;
		p.y=mod(p.y,.5)-.25;
		d+=.008/length(p);
	}
	c*=abs(d);
	return c;
}
vec3 pattern(vec2 uv) {
	float k=4./MN;
	return sqrt(spirals(uv*.95)*vec3(
		spirals(uv-k),
		spirals(uv),
		spirals(uv+k)
	))*.25;
}
void main(){
	vec3 col=vec3(0);
	float
	tt=beat(3.),
	t =beat(6.),
	m =S(1e-3,.5,1./(10.+90.*(1.-tt))),
	n =S(1e-3,.5,1./(7.+93.*tt));
	vec2 uv=(FC-.5*R)/MN;
	if (R.x>R.y) uv=vec2(uv.y,-uv.x);
	uv*=1.5+sqrt(t*.8);
	vec2 p=uv*(1.+.25*sqrt(t));
	uv-=uv*mix(.2,1.,rnd(uv))*n;
	p-=p*mix(.4,.8,rnd(FC))*m;
	col+=vec3(pow(sin(p.x*10.)*cos(p.y*10.),.2))*.2;
	col=max(col,pattern(uv));
	O=vec4(col,1);
}</script>
  
      <script >
window.onload = init
function init() {
  let renderer, canvas
  const dpr = Math.max(1, devicePixelRatio)
  const resize = () => {
    const { innerWidth: width, innerHeight: height } = window
    canvas.width = width * dpr
    canvas.height = height * dpr
    if (renderer) {
      renderer.updateScale(dpr)
    }
  }
  const source = document.querySelector("script[type='x-shader/x-fragment']").textContent
  canvas = document.createElement("canvas")
  document.title = "🌀 Focus Shift"
  document.body.innerHTML = ""
  document.body.appendChild(canvas)
  document.body.style = "margin:0;touch-action:none;overflow:hidden"
  canvas.style.width = "100%"
  canvas.style.height = "auto"
  canvas.style.userSelect = "none"
  renderer = new Re.........完整代码请登录后点击上方下载按钮下载查看