three+webgl实现晶莹剔透的茶杯旋转效果代码-html代码-BFW代码库

three+webgl实现晶莹剔透的茶杯旋转效果代码

代码语言：html

所属分类：三维

代码描述：three+webgl实现晶莹剔透的茶杯旋转效果代码

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>
body {
  margin: 0;
  padding: 0;
}

#container {
  position: fixed;
  touch-action: none;
}
</style>




</head>

<body >
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.88.js"></script>
<script id="vertexShader" type="x-shader/x-vertex">
    void main() {
        gl_Position = vec4( position, 1.0 );
    }
</script>
<script id="fragmentShader" type="x-shader/x-fragment">
    uniform vec2 u_resolution;
    uniform float u_time;
    uniform vec2 u_mouse;
  uniform sampler2D u_noise;
  
    const int octaves = 2;
    const float seed = 43758.5453123;
    const float seed2 = 73156.8473192;
    // Epsilon value
    const float eps = 0.05;
  
    const vec3 ambientLight = 0.99 * vec3(1.0, 1.0, 1.0);
    const vec3 light1Pos = vec3(10., 5.0, -25.0);
    const vec3 light1Intensity = vec3(0.35);
    const vec3 light2Pos = vec3(-20., -25.0, 85.0);
    const vec3 light2Intensity = vec3(0.2);
  
    // movement variables
    vec3 movement = vec3(.0);

    // Gloable variables for the raymarching algorithm.
    const int maxIterations = 256;
    const int maxIterationsShad = 16;
    const float stepScale = .7;
    const float stopThreshold = 0.001;
  
  vec3 hash33(vec3 p){ 
    return texture2D(u_noise, p.xy * p.z * 256.).rgb;
  }

  float pn( in vec3 p ) {
    vec3 i = floor(p); p -= i; p *= p*(3. - 2.*p);
    p.xy = texture2D(u_noise, (p.xy + i.xy + vec2(37, 17)*i.z + .5)/256., -100.).yx;
    return mix(p.x, p.y, p.z);
  }
  
  // Thanks to Shane for this one.
  // Basic low quality noise consisting of three layers of rotated, mutated 
  // trigonometric functions. Needs work, but sufficient for this example.
  float trigNoise3D(in vec3 p){


      float res = 0., sum = 0.;

      // IQ's cheap, texture-lookup noise function. Very efficient, but still 
      // a little too processor intensive for multiple layer usage in a largish 
      // "for loop" setup. Therefore, just one layer is being used here.
      float n = pn(p*8. + u_time*.5);


      // Two sinusoidal layers. I'm pretty sure you could get rid of one of 
      // the swizzles (I have a feeling the GPU doesn't like them as much), 
      // which I'll try to do later.

      vec3 t = sin(p.yzx*3.14159265 + cos(p.zxy*3.14159265+1.57/2.))*0.5 + 0.5;
      p = p*1.5 + (t - 1.5); //  + u_time*0.1
      res += (dot(t, vec3(0.333)));

      t = sin(p.yzx*3.14159265 + cos(p.zxy*3.14159265+1.57/2.))*0.5 + 0.5;
      res += (dot(t, vec3(0.333)))*0.7071;    

    return ((res/1.7071))*0.85 + n*0.15;
  }
  
  mat4 rotationMatrix(vec3 axis, float angle)
  {
      axis = no.........完整代码请登录后点击上方下载按钮下载查看