_renderVideoControl(){
    var buttonSize = 0.25;
    return(
        <ViroNode position={[0,-0.8,0]} opacity={1.0}>
            <ViroImage
                scale={[1.4, 1.2, 1]}
                position={[0, -0.27,-2.1]}
                source={require("./res/player_controls_container.png")}/>

            <ViroButton
                position={[-buttonSize-0.1,0,-2]}
                scale={[1, 1, 1]}
                width={buttonSize}
                height={buttonSize}
                source={require("./res/previous.png")}
                gazeSource={require("./res/previous_hover.png")}
                tapSource={require("./res/previous_hover.png")}
                onClick={this._playPreviousVideo}/>

               {this._renderPlayControl()}

            <ViroButton
                position={[buttonSize+0.1, 0,-2]}
                scale={[1, 1, 1]}
                width={buttonSize}
                height={buttonSize}
                source={require("./res/skip.png")}
                gazeSource={require("./res/skip_hover.png")}
                tapSource={require("./res/skip_hover.png")}
                onClick={this._playNextVideo}/>
        </ViroNode>
    );
  },

    /**
   * Renders either the play or pause icon depending on video state.
   */
  _renderPlayControl(){
    var buttonSize = 0.25;
    if (this.state.videoPaused){
      return (
          <ViroButton
              position={[0,0,-2]}
              scale={[1, 1, 1]}
              width={buttonSize}
              height={buttonSize}
              source={require("./res/play.png")}
              gazeSource={require("./res/play_hover.png")}
              tapSource={require("./res/play_hover.png")}
              onClick={this._togglePauseVideo}/>
      );
    } else {
      return (
          <ViroButton
              position={[0,0,-2]}
              scale={[1, 1, 1]}
              width={buttonSize}
              height={buttonSize}
              source={require("./res/pause.png")}
              gazeSource={require("./res/pause_hover.png")}
              tapSource={require("./res/pause_hover.png")}
              onClick={this._togglePauseVideo}/>
      );
    }
  },