public static void optionClean(){
  mDataList.clear();
  mFile=null;
  if (mSlicingHandler != null) {
    mSlicingHandler.setOriginalProject(null);
    mSlicingHandler.setLastReference(null);
    mSeekBar.setVisibility(View.INVISIBLE);
    mSurface.requestRender();
    showProgressBar(0,0);
  }
}

public static void optionClean ( ) { mDataList . clear ( ) ; mFile = null ; if ( mSlicingHandler != null ) { mSlicingHandler . setOriginalProject ( null ) ; mSlicingHandler . setLastReference ( null ) ; mSeekBar . setVisibility ( View . INVISIBLE ) ; mSurface . requestRender ( ) ; showProgressBar ( 0 , 0 ) ; } }
clean the print panel and delete all references
