threejs-obj-space/js/three.js-master/test/benchmark/core/Float32Array.js

(function() {

  var input = new Float32Array(10000 * 3);
  var output = new Float32Array(10000 * 3);

  for (var j = 0, jl = input.length; j < jl; j++) {
    input[j] = j;
  }

  var inputVectors = [];
  var outputVectors = [];

  for (var j = 0, jl = input.length / 3; j < jl; j++) {
    inputVectors.push(new THREE.Vector3(j * 3, j * 3 + 1, j * 3 + 2));
    outputVectors.push(new THREE.Vector3());
  }

  var s = Bench.newSuite("Float 32 Arrays");

  s.add('Float32Array-Float32Array', function() {
    var value3 = new Float32Array(3);
    for (var i = 0, il = input.length / 3; i < il; i += 3) {
      value3[0] = input[i + 0];
      value3[1] = input[i + 1];
      value3[2] = input[i + 2];
      value3[0] *= 1.01;
      value3[1] *= 1.03;
      value3[2] *= 0.98;
      output[i + 0] = value3[0];
      output[i + 1] = value3[1];
      output[i + 2] = value3[2];
    }
  });

  s.add('Float32Array-Array', function() {
    var value2 = [0, 0, 0];
    for (var i = 0, il = input.length / 3; i < il; i += 3) {
      value2[0] = input[i + 0];
      value2[1] = input[i + 1];
      value2[2] = input[i + 2];
      value2[0] *= 1.01;
      value2[1] *= 1.03;
      value2[2] *= 0.98;
      output[i + 0] = value2[0];
      output[i + 1] = value2[1];
      output[i + 2] = value2[2];
    }
  });

  s.add('Float32Array-Literal', function() {
    var x,
      y,
      z;
    for (var i = 0, il = input.length / 3; i < il; i += 3) {
      x = input[i + 0];
      y = input[i + 1];
      z = input[i + 2];
      x *= 1.01;
      y *= 1.03;
      z *= 0.98;
      output[i + 0] = x;
      output[i + 1] = y;
      output[i + 2] = z;
    }
  });

  s.add('Float32Array-Vector3', function() {
    var value = new THREE.Vector3();
    for (var i = 0, il = input.length / 3; i < il; i += 3) {
      value.x = input[i + 0];
      value.y = input[i + 1];
      value.z = input[i + 2];
      value.x *= 1.01;
      value.y *= 1.03;
      value.z *= 0.98;
      output[i + 0] = value.x;
      output[i + 1] = value.y;
      output[i + 2] = value.z;
    }
  });

})();