import org.eclipse.swt.widgets.Composite;
import org.simantics.g3d.scenegraph.RenderListener;
import org.simantics.g3d.vtk.action.vtkAction;
import org.eclipse.swt.widgets.Composite;
import org.simantics.g3d.scenegraph.RenderListener;
import org.simantics.g3d.vtk.action.vtkAction;