fixed stupid bug with wxVTKRenderWindowInteractor where orthogonal plane would disappear.
fixed stupid bug with wxVTKRenderWindowInteractor where orthogonal plane
would disappear.

chrisidefix/devide,nagyistoce/devide,zhangfangyan/devide,fvpolpeta/devide,ivoflipse/devide,zhangfangyan/devide,ivoflipse/devide,fvpolpeta/devide,chrisidefix/devide,nagyistoce/devide