question: public BoundingBox translate ( double x , double y , double z ) { this . center . x += x ; this . center . y += y ; this . center . z += z ; this . bottomCenter . x += x ; this . bottomCenter . y += y ; this . bottomCenter . z += z ; this . topCenter . x += x ; this . topCenter . y += y ; this . topCenter . z += z ; return this ; }
target:  Translates this bounding box by specified components.