three.js/test/benchmark/core/Vector3Storage.js

(function() {

  THREE = {};

  THREE.Vector3 = function(x, y, z) {

    this.x = x || 0;
    this.y = y || 0;
    this.z = z || 0;

  };

  THREE.Vector3.prototype = {

    constructor: THREE.Vector3,

    length: function() {

      return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);

    }

  };

  THREE.Vector3X = function(x, y, z) {

    var elements = this.elements = new Float32Array(3);
    elements[0] = x || 0;
    elements[1] = y || 1;
    elements[2] = z || 2;

  };

  THREE.Vector3X.prototype = {

    constructor: THREE.Vector3X,

    length: function() {

      return Math.sqrt(this.elements[0] * this.elements[0] + this.elements[1] * this.elements[1] + this.elements[2] * this.elements[2]);

    }

  };


  THREE.Vector3Y = function(x, y, z) {

    this.elements = [x || 0, y || 1, z || 2];

  };

  THREE.Vector3Y.prototype = {

    constructor: THREE.Vector3Y,

    length: function() {

      return Math.sqrt(this.elements[0] * this.elements[0] + this.elements[1] * this.elements[1] + this.elements[2] * this.elements[2]);

    }

  };


  var suite = Bench.newSuite("Vector 3 Storage");

  suite.add('Vector3-Set', function() {

    var array = [];
    for (var i = 0; i < 100000; i++) {
      var v = new THREE.Vector3(i, i, i);
      array.push(v);
    }

    var result = 0;
    for (var i = 0; i < 100000; i++) {
      var v = array[i];
      result += v.length();
    }
  });

  suite.add('Vector3-Float32Array', function() {

    var array = [];
    for (var i = 0; i < 100000; i++) {
      var v = new THREE.Vector3X(i, i, i);
      array.push(v);
    }

    var result = 0;
    for (var i = 0; i < 100000; i++) {
      var v = array[i];
      result += v.length();
    }
  });

  suite.add('Vector3-Array', function() {

    var array = [];
    for (var i = 0; i < 100000; i++) {
      var v = new THREE.Vector3Y(i, i, i);
      array.push(v);
    }

    var result = 0;
    for (var i = 0; i < 100000; i++) {
      var v = array[i];
      result += v.length();
    }
  });

})();