question: private void initCellSize ( ) { this . cellRadius = ( this . width - offset * 2 ) / 4 / 2 ; this . cellInnerRadius = this . cellRadius / 3 ; this . cellBoxWidth = ( this . width - offset * 2 ) / 3 ; this . cellBoxHeight = ( this . height - offset * 2 ) / 3 ; }
target:  initialize cell size (include circle radius, inner circle radius, cell box width, cell box height)