ctor(duration, position, radialBlurSpread, radialBlurDeadZone, radialBlurStrength) {
    cc.ActionInterval.prototype.ctor.call(this);
    this.initWithDuration(duration, position, radialBlurSpread, radialBlurDeadZone, radialBlurStrength);
  }
Animates the screen space radial blur.
NOTE: only run this action on the scene, as it affects global state and the scene is the only guaranteed persistent node.
@param {Number} duration
@param {Vec2} position
@param {Number} radialBlurSpread
@param {Number} radialBlurDeadZone
@param {Number} radialBlurStrength
@return {RadialBlurTo}