webgl实现canvas光速穿越飞行动画效果代码-html代码-BFW代码库

webgl实现canvas光速穿越飞行动画效果代码

代码语言：html

所属分类：动画

代码描述：webgl实现canvas光速穿越飞行动画效果代码

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 float time;
uniform vec2 resolution;
#define FC gl_FragCoord.xy
#define R resolution
#define T time
#define hue(a) (.6+.6*cos(6.3*(a)+vec3(0,83,21)))
float rnd(float a) {
	vec2 p=fract(a*vec2(12.9898,78.233));	p+=dot(p,p*345.);
	return fract(p.x*p.y);
}
vec3 pattern(vec2 uv) {
	vec3 col=vec3(0);
	for (float i=.0; i++<20.;) {
		float a=rnd(i);
		vec2 n=vec2(a,fract(a*34.56)), p=sin(n*(T+7.)+T*.5);
		float d=dot(uv-p,uv-p);
		col+=.00125/d*hue(dot(uv,uv)+i*.125+T);
	}
	return col;
}
void main(void) {
	vec2 uv=(FC-.5*R)/min(R.x,R.y);
	vec3 col=vec3(0);
	float s=2.4,
	a=atan(uv.x,uv.y),
	b=length(uv);
	uv=vec2(a*5./6.28318,.05/tan(b)+T);
	uv=fract(uv)-.5;
	col+=pattern(uv*s);
	O=vec4(col,1);
}</script>
  
      <script id="rendere.........完整代码请登录后点击上方下载按钮下载查看