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

js实现材质球在槽中流动动画背景效果代码

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);
  .........完整代码请登录后点击上方下载按钮下载查看