diagram.plantuml

@startuml Conway
skinparam linetype ortho
!theme plain

class Main {
    - windowHeight: int
    - windowWidth: int

    - gridHeight: int
    - gridWidth: int
    --
    + {static} main(args: String[]): void
}

class GFX {
    - width: int
    - height: int
    - gridRef: Grid
    --
    + GFX(width: int, height: int, grid: Grid)
    + repaint(): void
}

class Grid {
    - width: int
    - height: int
    - cells: Cell [][]
    --
    + Grid(width: int, height: int, initCellsPct: double)
    + update(): void
}

class Cell {
    - x: int
    - y: int
    - state: boolean
    - nextState: boolean
    - gridRef: Grid
    --
    + Cell(int: x, int: y, state: boolean, grid: Grid)
    + applyRule(): void
    + update(): void
    - getActiveNeighbours(): int
}

Main -up- GFX
Main -- Grid
Grid *-down- Cell

Grid <..right.. Cell
Grid ..right..> Cell
GFX ..down..> Grid
@enduml