twgljs实现webgl canvas文字圈圈闪烁动画效果代码-html代码-BFW代码库

twgljs实现webgl canvas文字圈圈闪烁动画效果代码

代码语言：html

所属分类：动画

代码描述：twgljs实现webgl canvas文字圈圈闪烁动画效果代码

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">
  

  
  
  
  
<style>
html {
  height: 100%;
}
body {
  background: #333;
  overflow: hidden;
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
}
canvas {
  height: 100%;
  width: 100%;
  margin: auto;
}
</style>

  
  
</head>

<body translate="no">
  <canvas id="canvas"></canvas>
<!-- VertexShader code here -->
<script id="vertexShader" type="x-shader/x-vertex">#version 300 es
precision highp float;
  in vec4 position;

  void main() {
    gl_Position = vec4( position );
  }
</script>

<!-- FragmentShader code here -->
<script id="fragmentShader" type="x-shader/x-fragment">#version 300 es
precision highp float;
out vec4 fragColor;
uniform vec2 u_resolution;
uniform float u_time;
uniform vec4 u_mouse;
  
#define R           u_resolution
#define T           u_time
#define M           u_mouse

#define PI          3.141592653
#define PI2         6.283185307

#define MIN_DIST    1e-4
#define MAX_DIST    55.

// constants
const float sz = .425;
const float hf = sz/2.;

const vec4 bz = vec4(.075,.055,.035,.0);
const vec4 bo = vec4(.175,.15,.075,.025);
const vec2 oa = vec2(.15,.1);

vec3 hue(float t){ return .55 + .45*cos(PI2*t*(vec3(.95,.97,.98)+vec3(1,.5,.2))); }
float hash21(vec2 p){return fract(sin(dot(p,vec2(27.619,57.583)))*4358.5453);}
mat2 rot(float a){return mat2(cos(a),sin(a),-sin(a),cos(a)); }

float box( in vec2 p, in vec2 b ){
    vec2 d = abs(p)-b;
    return length(max(d,0.))+min(max(d.x,d.y),0.);
}

float rbox( in vec2 p, in vec2 b, in vec4 r ) {
    r.xy = (p.x>0.)?r.xy : r.zw;
    r.x  = (p.y>0.)?r.x  : r.y;
    vec2 q = abs(p)-b+r.x;
    return min(max(q.x,q.y),0.)+length(max(q,0.))-r.x;
}
// special
float getdp(vec2 p) {
    float bt = length(p)-.075;
    return bt;
}
// number
float get3(vec2 p) {
    vec2 of = vec2(0,.075);
    float bt = max(
    rbox(p-of,oa,bz.xxww),
    -rbox(p-of+vec2(.05,0),vec2(.15,.05),bz.z.........完整代码请登录后点击上方下载按钮下载查看