question: private Rectangle integerise ( Rectangle2D rect ) { int x0 = ( int ) Math . ceil ( rect . getMinX ( ) ) ; int y0 = ( int ) Math . ceil ( rect . getMinY ( ) ) ; int x1 = ( int ) Math . floor ( rect . getMaxX ( ) ) ; int y1 = ( int ) Math . floor ( rect . getMaxY ( ) ) ; return new Rectangle ( x0 , y0 , ( x1 - x0 ) , ( y1 - y0 ) ) ; }
target:  Trims a rectangle to integer coordinates.