Gamepad axis 'moved' function for CocoonJS on the Ouya using a high-precision radial deadzone algorithm

gamepad.js

Phaser.Plugin.CocoonJSOuyaGamepad.prototype.moved = function(pad, axisId) {
    var movedAmount = 0;
    var magitudeLeft = 0;
    var magitudeRight = 0;
    if (_gamepads[pad]) {
      magitudeLeft = Math.sqrt((_gamepads[pad].axes[0] * _gamepads[pad].axes[0]) +
              (_gamepads[pad].axes[1] * _gamepads[pad].axes[1]));
      magitudeRight = Math.sqrt((_gamepads[pad].axes[2] * _gamepads[pad].axes[2]) +
              (_gamepads[pad].axes[3] * _gamepads[pad].axes[3]));
      if (axisId === "AXIS_0" && _gamepads[pad].axes[0] <= 1) {
        if (magitudeLeft < settings.LEFTAXISTHRESHOLD) {
          movedAmount = 0;
        }
        else {
          movedAmount = (_gamepads[pad].axes[0] / magitudeLeft) *
                  ((magitudeLeft - settings.LEFTAXISTHRESHOLD) / (1 - settings.LEFTAXISTHRESHOLD));
        }
      } else if (axisId === "AXIS_1" && _gamepads[pad].axes[1] <= 1) {
        if (magitudeLeft < settings.LEFTAXISTHRESHOLD) {
          movedAmount = 0;
        }
        else {
          movedAmount = (_gamepads[pad].axes[1] / magitudeLeft) *
                  ((magitudeLeft - settings.LEFTAXISTHRESHOLD) / (1 - settings.LEFTAXISTHRESHOLD));
        }
      } else if (axisId === "AXIS_2" && _gamepads[pad].axes[2] <= 1) {
        if (magitudeRight < settings.RIGHTAXISTHRESHOLD) {
          movedAmount = 0;
        }
        else {
          movedAmount = (_gamepads[pad].axes[2] / magitudeRight) *
                  ((magitudeRight - settings.RIGHTAXISTHRESHOLD) / (1 - settings.RIGHTAXISTHRESHOLD));
        }
      } else if (axisId === "AXIS_3" && _gamepads[pad].axes[3] <= 1) {
        if (magitudeRight < settings.RIGHTAXISTHRESHOLD) {
          movedAmount = 0;
        }
        else {
          movedAmount = (_gamepads[pad].axes[3] / magitudeRight) *
                  ((magitudeRight - settings.RIGHTAXISTHRESHOLD) / (1 - settings.RIGHTAXISTHRESHOLD));
        }
      }

      return movedAmount;

    } else {
      return movedAmount;
    }
  };