webgl实现时光穿梭星际旅行动画效果代码
代码语言:html
所属分类:动画
代码描述:webgl实现时光穿梭星际旅行动画效果代码
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>
<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 >
window.onload = init
function init() {.........完整代码请登录后点击上方下载按钮下载查看
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