B2G/gecko/browser/devtools/tilt/TiltVisualizer.jsm
/**
   * Function handling the arcball zoom amount.
   * Call this, for example, when the mouse wheel was scrolled or zoom keys
   * were pressed.
   *
   * @param {Number} aZoom
   *                 the zoom direction and speed
   */
Function handling the arcball zoom amount.
Call this, for example, when the mouse wheel was scrolled or zoom keys
were pressed.

@param {Number} aZoom
the zoom direction and speed
Function handling the arcball zoom amount . Call this for example when the mouse wheel was scrolled or zoom keys were pressed . @param { Number } aZoom the zoom direction and speed
function TVA_zoom(aZoom)
  {
    this._cancelReset();
    this._zoomAmount = TiltMath.clamp(this._zoomAmount - aZoom,
      ARCBALL_ZOOM_MIN, ARCBALL_ZOOM_MAX);
  }
function TVA_zoom ( aZoom ) { this . _cancelReset ( ) ; this . _zoomAmount = TiltMath . clamp ( this . _zoomAmount - aZoom , ARCBALL_ZOOM_MIN , ARCBALL_ZOOM_MAX ) ; }
Function handling the arcball zoom amount.
Function handling the arcball zoom amount .