在平移/缩放/旋转时，将正弦波推动通过一个几何体

Question

这是启动我更大想法的前奏/简单示例。

问题：当立方体缩放，平移或旋转时，如何使用正弦波使立方体的顶点变形。

注意：也许有一些后期处理效果我不知道这一点因此，动画顶点不是最适合这个。

注2：我的最终目标是通过几何/网格推送音乐/音频，以便它具有更多的效果：

只是为了澄清我想要上面这张图片的效果，我也希望它是动画的，并且是一块3d几何体而不是2d光栅图像。

但我担心添加这个音频功能对于一个问题来说太多了。

据说这是一个正在翻译，缩放，旋转的立方体。立方体有一个使用法线和颜色的光源：

var gl,
    shaderProgram,
    vertices,
    matrix = mat4.create(),
    vertexCount,
    indexCount,
    q = quat.create(),
    translate =[-3, 0, -10],
    scale = [1,1,1],
    pivot = [0,0,0];
    
    translate2 = [0, 0, -8],
    scale2 = [3,3,3],
    pivot2 = [1,1,1]


initGL();
createShaders();
createVertices();
draw();

function initGL() 
  var canvas = document.getElementById("canvas");
  gl = canvas.getContext("webgl");
  gl.enable(gl.DEPTH_TEST);
  gl.viewport(0, 0, canvas.width, canvas.height);
  gl.clearColor(1, 1, 1, 1);


function createShaders() 
  var vertexShader = getShader(gl, "shader-vs");
  var fragmentShader = getShader(gl, "shader-fs");

  shaderProgram = gl.createProgram();
  gl.attachShader(shaderProgram, vertexShader);
  gl.attachShader(shaderProgram, fragmentShader);
  gl.linkProgram(shaderProgram);
  gl.useProgram(shaderProgram);


function createVertices() 
vertices = [
  [-1, -1, -1,     1, 0, 0, 1],     // 0
  [ 1, -1, -1,     1, 1, 0, 1],     // 1
  [-1,  1, -1,     0, 1, 1, 1],     // 2
  [ 1,  1, -1,     0, 0, 1, 1],     // 3
  [-1,  1,  1,     1, 0.5, 0, 1],   // 4
  [1,  1,  1,      0.5, 1, 1, 1],   // 5
  [-1, -1,  1,     1, 0, 0.5, 1],   // 6
  [1, -1,  1,      0.5, 0, 1, 1],   // 7
];

var normals = [
  [0, 0, 1], [0, 1, 0], [0, 0, -1],
  [0, -1, 0], [-1, 0, 0], [1, 0, 0] ];

var indices = [
  [0, 1, 2,   1, 2, 3],
  [2, 3, 4,   3, 4, 5],
  [4, 5, 6,   5, 6, 7],
  [6, 7, 0,   7, 0, 1],
  [0, 2, 6,   2, 6, 4],
  [1, 3, 7,   3, 7, 5]
];

var attributes = []
for(let side=0; side < indices.length; ++side) 
    for(let vi=0; vi < indices[side].length; ++vi) 
        attributes.push(...vertices[indices[side][vi]]);
        attributes.push(...normals[side]);
    


  vertexCount = attributes.length / 10;

  var buffer = gl.createBuffer();
  gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
  gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(attributes), gl.STATIC_DRAW);

  var coords = gl.getAttribLocation(shaderProgram, "coords");
  gl.vertexAttribPointer(coords, 3, gl.FLOAT, false, Float32Array.BYTES_PER_ELEMENT * 10, 0);
  gl.enableVertexAttribArray(coords); 

  var colorsLocation = gl.getAttribLocation(shaderProgram, "colors");
  gl.vertexAttribPointer(colorsLocation, 4, gl.FLOAT, false, Float32Array.BYTES_PER_ELEMENT * 10, Float32Array.BYTES_PER_ELEMENT * 3);
  gl.enableVertexAttribArray(colorsLocation);

  var normalLocation = gl.getAttribLocation(shaderProgram, "normal");
  gl.vertexAttribPointer(normalLocation, 3, gl.FLOAT, false, Float32Array.BYTES_PER_ELEMENT * 10, Float32Array.BYTES_PER_ELEMENT * 7);
  gl.enableVertexAttribArray(normalLocation);  
  
  gl.bindBuffer(gl.ARRAY_BUFFER, null);
  
  var lightColor = gl.getUniformLocation(shaderProgram, "lightColor");
  gl.uniform3f(lightColor, 1, 1, 1);
  
  var lightDirection = gl.getUniformLocation(shaderProgram, "lightDirection");
  gl.uniform3f(lightDirection, 0.5, 0.5, -1);


  var perspectiveMatrix = mat4.create();
  mat4.perspective(perspectiveMatrix, 1, canvas.width / canvas.height, 0.1, 11);
  var perspectiveLoc = gl.getUniformLocation(shaderProgram, "perspectiveMatrix");
  gl.uniformMatrix4fv(perspectiveLoc, false, perspectiveMatrix);



function draw(timeMs) 
  requestAnimationFrame(draw);

  let interval = timeMs / 3000
  let t = interval - Math.floor(interval); 

  let trans_t = vec3.lerp([], translate, translate2, t);
  let scale_t = vec3.lerp([], scale, scale2, t);
  let pivot_t = vec3.lerp([], pivot, pivot2, t);
  let quat_t = quat.slerp(quat.create(), q, [1,0,1,1], t /2);
  mat4.fromRotationTranslationScaleOrigin(matrix, quat_t, trans_t, scale_t, pivot_t);

  var transformMatrix = gl.getUniformLocation(shaderProgram, "transformMatrix");
  gl.uniformMatrix4fv(transformMatrix, false, matrix);
  gl.clear(gl.COLOR_BUFFER_BIT);

  //gl.drawElements(gl.TRIANGLES, indexCount, gl.UNSIGNED_BYTE, 0);
  gl.drawArrays(gl.TRIANGLES, 0, vertexCount);



  /*
   * https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/Tutorial/Adding_2D_content_to_a_WebGL_context
   */
  function getShader(gl, id) 
    var shaderScript, theSource, currentChild, shader;

    shaderScript = document.getElementById(id);

    if (!shaderScript) 
      return null;
    

    theSource = "";
    currentChild = shaderScript.firstChild;

    while (currentChild) 
      if (currentChild.nodeType == currentChild.TEXT_NODE) 
        theSource += currentChild.textContent;
      

      currentChild = currentChild.nextSibling;
    
    if (shaderScript.type == "x-shader/x-fragment") 
      shader = gl.createShader(gl.FRAGMENT_SHADER);
     else if (shaderScript.type == "x-shader/x-vertex") 
      shader = gl.createShader(gl.VERTEX_SHADER);
     else 
      // Unknown shader type
      return null;
    
    gl.shaderSource(shader, theSource);

// Compile the shader program
    gl.compileShader(shader);

// See if it compiled successfully
    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) 
      alert("An error occurred compiling the shaders: " + gl.getShaderInfoLog(shader));
      return null;
    

    return shader;

<canvas id="canvas" width="600" height="600"></canvas>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gl-matrix/2.3.2/gl-matrix-min.js"></script>

<script id="shader-vs" type="x-shader/x-vertex">
attribute vec4 coords;
uniform mat4 transformMatrix;
attribute vec3 normal;
attribute vec4 colors;
uniform vec3 lightColor;
uniform vec3 lightDirection;
varying vec4 varyingColors;
uniform mat4 perspectiveMatrix;
void main(void) 
    vec3 norm = normalize(normal);
    vec3 ld = normalize(lightDirection);
    float dotProduct = max(dot(norm, ld), 0.0);
    vec3 vertexColor = lightColor * colors.rgb * dotProduct;
    varyingColors = vec4(vertexColor, 1);
    gl_Position = perspectiveMatrix * transformMatrix  * coords;

</script>

<script id="shader-fs" type="x-shader/x-fragment">
precision mediump float;
uniform vec4 color;
varying vec4 varyingColors;
void main(void) 
  gl_FragColor = varyingColors;

</script>