sphere.js

document.addEventListener("DOMContentLoaded", function () {
  const settings = {
    speed: 0.2,
    density: 1.5,
    strength: 0.2,
    frequency: 3.0,
    amplitude: 6.0,
    intensity: 7.0,
    phase: 0.1,
  };

  window.blobSettings = settings;

  const noise = `
      // GLSL textureless classic 3D noise "cnoise",
      // with an RSL-style periodic variant "pnoise".
      // Author:  Stefan Gustavson (stefan.gustavson@liu.se)
      // Version: 2011-10-11
      //
      // Many thanks to Ian McEwan of Ashima Arts for the
      // ideas for permutation and gradient selection.
      //
      // Copyright (c) 2011 Stefan Gustavson. All rights reserved.
      // Distributed under the MIT license. See LICENSE file.
      // https://github.com/ashima/webgl-noise
      //
    
      vec3 mod289(vec3 x)
      {
        return x - floor(x * (1.0 / 289.0)) * 289.0;
      }
    
      vec4 mod289(vec4 x)
      {
        return x - floor(x * (1.0 / 289.0)) * 289.0;
      }
    
      vec4 permute(vec4 x)
      {
        return mod289(((x*34.0)+1.0)*x);
      }
    
      vec4 taylorInvSqrt(vec4 r)
      {
        return 1.79284291400159 - 0.85373472095314 * r;
      }
    
      vec3 fade(vec3 t) {
        return t*t*t*(t*(t*6.0-15.0)+10.0);
      }
    
      // Classic Perlin noise, periodic variant
      float pnoise(vec3 P, vec3 rep)
      {
        vec3 Pi0 = mod(floor(P), rep); // Integer part, modulo period
        vec3 Pi1 = mod(Pi0 + vec3(1.0), rep); // Integer part + 1, mod period
        Pi0 = mod289(Pi0);
        Pi1 = mod289(Pi1);
        vec3 Pf0 = fract(P); // Fractional part for interpolation
        vec3 Pf1 = Pf0 - vec3(1.0); // Fractional part - 1.0
        vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x);
        vec4 iy = vec4(Pi0.yy, Pi1.yy);
        vec4 iz0 = Pi0.zzzz;
        vec4 iz1 = Pi1.zzzz;
    
        vec4 ixy = permute(permute(ix) + iy);
        vec4 ixy0 = permute(ixy + iz0);
        vec4 ixy1 = permute(ixy + iz1);
    
        vec4 gx0 = ixy0 * (1.0 / 7.0);
        vec4 gy0 = fract(floor(gx0) * (1.0 / 7.0)) - 0.5;
        gx0 = fract(gx0);
        vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0);
        vec4 sz0 = step(gz0, vec4(0.0));
        gx0 -= sz0 * (step(0.0, gx0) - 0.5);
        gy0 -= sz0 * (step(0.0, gy0) - 0.5);
    
        vec4 gx1 = ixy1 * (1.0 / 7.0);
        vec4 gy1 = fract(floor(gx1) * (1.0 / 7.0)) - 0.5;
        gx1 = fract(gx1);
        vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1);
        vec4 sz1 = step(gz1, vec4(0.0));
        gx1 -= sz1 * (step(0.0, gx1) - 0.5);
        gy1 -= sz1 * (step(0.0, gy1) - 0.5);
    
        vec3 g000 = vec3(gx0.x,gy0.x,gz0.x);
        vec3 g100 = vec3(gx0.y,gy0.y,gz0.y);
        vec3 g010 = vec3(gx0.z,gy0.z,gz0.z);
        vec3 g110 = vec3(gx0.w,gy0.w,gz0.w);
        vec3 g001 = vec3(gx1.x,gy1.x,gz1.x);
        vec3 g101 = vec3(gx1.y,gy1.y,gz1.y);
        vec3 g011 = vec3(gx1.z,gy1.z,gz1.z);
        vec3 g111 = vec3(gx1.w,gy1.w,gz1.w);
    
        vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110)));
        g000 *= norm0.x;
        g010 *= norm0.y;
        g100 *= norm0.z;
        g110 *= norm0.w;
        vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111)));
        g001 *= norm1.x;
        g011 *= norm1.y;
        g101 *= norm1.z;
        g111 *= norm1.w;
    
        float n000 = dot(g000, Pf0);
        float n100 = dot(g100, vec3(Pf1.x, Pf0.yz));
        float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z));
        float n110 = dot(g110, vec3(Pf1.xy, Pf0.z));
        float n001 = dot(g001, vec3(Pf0.xy, Pf1.z));
        float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z));
        float n011 = dot(g011, vec3(Pf0.x, Pf1.yz));
        float n111 = dot(g111, Pf1);
    
        vec3 fade_xyz = fade(Pf0);
        vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z);
        vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y);
        float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x);
        return 2.2 * n_xyz;
      }
    `;

  const rotation = `
      mat3 rotation3dY(float angle) {
        float s = sin(angle);
        float c = cos(angle);
    
        return mat3(
          c, 0.0, -s,
          0.0, 1.0, 0.0,
          s, 0.0, c
        );
      }
      
      vec3 rotateY(vec3 v, float angle) {
        return rotation3dY(angle) * v;
      }  
    `;

  const vertexShader = `  
      varying vec2 vUv;
      varying float vDistort;
      
      uniform float uTime;
      uniform float uSpeed;
      uniform float uNoiseDensity;
      uniform float uNoiseStrength;
      uniform float uFrequency;
      uniform float uAmplitude;
      
      ${noise}
      
      ${rotation}
      
      void main() {
        vUv = uv;
  
        
        float t = uTime * uSpeed;
        float distortion = pnoise((normal + t) * uNoiseDensity, vec3(10.0)) * uNoiseStrength;
    
        vec3 pos = position + (normal * distortion);
        float angle = sin(uv.y * uFrequency + t) * uAmplitude;
        pos = rotateY(pos, angle);    
        
        vDistort = distortion;
    
        gl_Position = projectionMatrix * modelViewMatrix * vec4(pos, 1.);
      }  
    `;

  const fragmentShader = `
      varying vec2 vUv;
      varying float vDistort;
      
      uniform float uTime;
      uniform float uIntensity;
      
      vec3 cosPalette(float t, vec3 a, vec3 b, vec3 c, vec3 d) {
        return a + b * cos(6.28318 * (c * t + d));
      }     
      
      void main() {
        float distort = vDistort * uIntensity;
        
        vec3 brightness = vec3(0.2, .35, 0.5);
        vec3 contrast = vec3(0.5, 0.5, 0.5);
        vec3 oscilation = vec3(1.0, 1.0, 1.0);
        vec3 phase = vec3(0.0, ${settings.phase}, 0.2);
      
        vec3 color = cosPalette(distort, brightness, contrast, oscilation, phase);
        
        gl_FragColor = vec4(color, 1.0);
      }  
    `;

  class Scene {
    constructor() {
      this.renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
      this.renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1.5));
      this.renderer.setSize(
        document.getElementById("sphere-container").clientWidth,
        document.getElementById("sphere-container").clientHeight
      );
      this.renderer.setClearColor("black", 0);

      this.camera = new THREE.PerspectiveCamera(
        45,
        document.getElementById("sphere-container").clientWidth /
          document.getElementById("sphere-container").clientHeight,
        0.1,
        1000
      );
      this.camera.position.set(0, 0, 3.8); // Adjust the Z-coordinate based on your design

      this.scene = new THREE.Scene();

      this.clock = new THREE.Clock();
      this.controls = new THREE.OrbitControls(
        this.camera,
        document.getElementById("sphere-container")
      );
      this.controls.enableZoom = false;
      this.controls.autoRotate = true;
      this.controls.enableDamping = true;
      this.init();
      this.animate();
    }

    init() {
      this.addCanvas();
      this.addElements();
      this.addEvents();
    }

    addCanvas() {
      const canvas = this.renderer.domElement;
      canvas.classList.add("webgl");
      document.getElementById("sphere-container").appendChild(canvas);
    }

    addElements() {
      const geometry = new THREE.IcosahedronBufferGeometry(1, 64);
      const material = new THREE.ShaderMaterial({
        vertexShader,
        fragmentShader,
        uniforms: {
          uTime: { value: 0 },
          uSpeed: { value: settings.speed },
          uNoiseDensity: { value: settings.density },
          uNoiseStrength: { value: settings.strength },
          uFrequency: { value: settings.frequency },
          uAmplitude: { value: settings.amplitude },
          uIntensity: { value: settings.intensity },
        },
      });
      this.mesh = new THREE.Mesh(geometry, material);

      this.scene.add(this.mesh);
    }

    addEvents() {
      window.addEventListener("resize", this.resize.bind(this));
    }

    resize() {
      let width = document.getElementById("sphere-container").clientWidth;
      let height = document.getElementById("sphere-container").clientHeight;

      this.camera.aspect = width / height;
      this.renderer.setSize(width, height);

      this.camera.updateProjectionMatrix();
    }

    animate() {
      requestAnimationFrame(this.animate.bind(this));
      this.render();
    }

    render() {
      this.controls.update();

      // Update uniforms
      this.mesh.material.uniforms.uTime.value = this.clock.getElapsedTime();
      this.mesh.material.uniforms.uSpeed.value = settings.speed;
      this.mesh.material.uniforms.uNoiseDensity.value = settings.density;
      this.mesh.material.uniforms.uNoiseStrength.value = settings.strength;
      this.mesh.material.uniforms.uFrequency.value = settings.frequency;
      this.mesh.material.uniforms.uAmplitude.value = settings.amplitude;
      this.mesh.material.uniforms.uIntensity.value = settings.intensity;
      this.renderer.render(this.scene, this.camera);
    }
  }

  let sphereScene = new Scene();
});