js实现材质球在槽中流动动画背景效果代码-html代码-BFW代码库

代码语言：html

所属分类：背景

代码描述：js实现材质球在槽中流动动画背景效果代码

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%;
}
img {
  display: none;
}
body {
  background: #000;
  overflow: hidden;
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  text-align: center;
}

canvas {
  height: 100%;
  width: 100%;
  margin: auto;
}
</style>


</head>

<body>
  <!-- VertexShader code here -->
<script id="vertexShader" type="x-shader/x-vertex">#version 300 es
precision highp float;
in vec4 vPosition;
void main() {
	gl_Position = vPosition;
}
</script>
<!-- FragmentShader code here -->
<script id="fragmentShader" type="x-shader/x-fragment">#version 300 es
precision highp float;
out vec4 fragColor;
  
uniform vec4 mouse;
uniform vec2 resolution;
uniform float time;
#define R          resolution
#define M          mouse
#define T          time
#define PI         3.14159265359
#define PI2        6.28318530718
#define SQ3        1.732

mat2 rot(float a)
{
    return mat2(cos(a),sin(a),-sin(a),cos(a));
}

float hash21(vec2 p)
{
    return fract(sin(dot(p, vec2(27.609, 57.583)))*43758.5453);
}

vec3 hue(float t)
{ 
    vec3 d = vec3(0.725,0.153,0.153);
    return .55 + .45*cos(PI2*t*(vec3(.85,.97,.98)*d)); 
}

vec4 hexGrid(vec2 uv, float scale)
{
    uv*=scale;
    const vec2 s = vec2(SQ3, 1.);
    vec4 hC = floor(vec4(uv, uv - vec2(1, .5))/s.xyxy) + .5;
    vec4 h4 = vec4(uv - hC.xy*s, uv - (hC.zw + .5)*s);
    return dot(h4.xy, h4.xy) < dot(h4.zw, h4.zw) ? vec4(h4.xy, hC.xy) : vec4(h4.zw, hC.zw + .5);
}

void main( )
{
    vec3 C = vec3(0);
    vec2 uv = gl_FragCoord.xy/max(R.x,R.y);
    uv.x+=T*.015;
    uv.y+=T*.045;
  
    vec4 hex = hexGrid(uv,6.);
    vec2 id = hex.zw;
    vec2 p  = hex.xy;
    
    float check = mod(id.y + id.x,2.) * 2. - 1.;
    float rnd = hash21(id);
    float dir =  -1.;
    
    if(rnd>.5) {
        p *= rot(60.*PI/180.);
        p.y=-p.y;
    } 
    
    float rdx = .2875;
    
    // set vectors
    vec2 p0 = p - vec2(-.5/SQ3, .5);
    vec2 p1 = p - vec2(.8660254*2./3., 0);
    vec2 p2 = p - vec2(-.5/SQ3, -.5);
    
    // find closest point
    vec3 d3 = vec3(length(p0), length(p1), length(p2));
    vec2 pp = vec2(0);

    if(d3.x>d3.y) pp = p1;
    if(d3.y>d3.z) pp = p2;
    if(d3.z>d3.x && d3.y>d3.x) pp = p0;

    // draw truchet path
    float circle = length(pp)-rdx;
    circle=abs(circle)-.1;
    float cntr = circle;
    float cntrShade = circle;
    cntr = smoothstep(.03,.02,cntr);
    circle=abs(circle)-.001;
    circle=smoothstep(.01,.00,circle);
    float amt = 12.;

    // hex background
    float tileform = max(abs(hex.x)*.8660254 + abs(hex.y)*.5, abs(hex.y)) - .5;
    
    float edges = abs(tileform);
    
    edges=abs(abs(edges)-.02)-.01;
    edges=smoothstep(.03, .02, edges);

    float cells=smoothstep(.051, .05, tileform);
    float cellshadow = (rnd>.5) ? 1.-d3.x : d3.x; 
 
    //animation
    //d3 = abs(d3 - SQ3/6.) - .125;
    vec3 a3=vec3(atan(p0.x, p0.y),atan(p1.x, p1.y),atan(p2.x, p2.y));
    
    vec2 da = vec2(0);
    if(d3.x>d3.y) da = vec2(d3.y, a3.y);
    if(d3.y>d3.z) da = vec2(d3.z, a3.z);
    if(d3.z>d3.x && d3.y>d3.x) da = vec2(d3.x, a3.x);
    
    float speed = T;
    // make coords on truchet path
    float d = length(pp);
    float pathMotion = da.y/ PI2* (amt) + speed;
    float x = fract(pathMotion) - .5;
    float y = d-rdx;
    
    //cid.x isn't correct - unsure
    //trying to find right math to 
    //fix id's for each ball
    vec2 cid = vec2(
       floor(d),
       floor(pathMotion)-.5
    );
    
    cid=mod(cid,4.);

    //vector and compress coords
    vec2 tu = vec2(x,y)*vec2(1.45,10.);
    float path = length(tu)-.44;
    //if(mod(cid.y,4.)<3.) path=abs(path)-.001;
    //if(mod(cid.y,4.)<1.) path=1.;
    path=smoothstep(.11,.1,path);

    vec2 vu =rot(.60)*uv;
    float sd = mod(floor(vu.y * 555.), 2.);
    vec3 stripe = (sd<1.) ? vec3(.9) : vec3(.75);
    
    //mixdowns and stuff
    vec3 baseHue = hue(rnd*.5);
    vec3 topHue = hue(hash21(cid)*13.);
    C = mix(C, baseHue*stripe*(cellshadow), min(cells,1.-cntr));
    C = mix(C, baseHue*(1.5-cellshadow),min(edges,1.-cntr)); 
    C = mix(C, vec3(stripe*.15), cntr);
    C = mix(C, vec3(.35), max(circle,-edges));
    C = mix(C, topHue,path);

    // Output to screen
    fragColor = vec4(C,1.0);
}
</script>
<div id="container" ></div>


  
      <script >
// karlikpj 2021
// Boostrap for WebGL and Attaching Shaders //
// Fragment & Vertex Shaders in HTML window //
class Render {
  constructor() {
    this.start = Date.now();
    this.umouse = [0.0, 0.0, 0.0, 0.0];
    this.tmouse = [0.0, 0.0, 0.0, 0.0];
    // Setup WebGL canvas and surface object //
    // Make Canvas and get WebGl2 Context //
    let width = (this.width = ~~(document.documentElement.clientWidth,
    window.innerWidth || 0));
    let height = (this.height = ~~(document.documentElement.clientHeight,
    window.innerHeight || 0));
    co.........完整代码请登录后点击上方下载按钮下载查看