:rect x y h w

:: -------------------------------------------------------------------------------------------------------
:: :rect x y h w    requires :canvas, :showCanvas, :plot, :plotLine
::
:: call :canvas 30 30
::
:: call :rect 14 6 3 5
::
:: call :showCanvas
::
:: -------------------------------------------------------------------------------------------------------
:rect x y h w
    set /a "rect_x=%~1", "rect_y=%~2", "rect_h=%~2 + %~4", "rect_w=%~1 + %~3"
    call :plotLine %rect_x% %rect_y% %rect_w% %rect_y% %5
    call :plotLine %rect_x% %rect_y% %rect_x% %rect_h% %5
    call :plotLine %rect_w% %rect_h% %rect_w% %rect_y% %5
    call :plotLine %rect_w% %rect_h% %rect_x% %rect_h% %5
    for %%a in (rect_h rect_w rect_x rect_y) do set "%%a="
goto :eof
:: -------------------------------------------------------------------------------------------------------