Let's have few examples :
Note that you can disable the shadowing using the skinparam shadowing false command.
Use Case Diagram
Let's have a few examples:
유즈케이스
유즈케이스는 (두개의 괄호는 원으로 보이기 때문에) 괄호로 싸서 표현합니다.
아니면 usecase 키워를 이용하여 정의할 수 있습니다.
그리고 as 키워드를 이용하여 별칭을 정의 할 수 있습니다.
별칭은 관계를 정의할 때 사용됩니다.
@startuml
(First usecase)
(Another usecase) as (UC2)
usecase UC3
usecase (Last\nusecase) as UC4
@enduml
Usecases
Use cases are enclosed using between parentheses (because two
parentheses looks like an oval).
You can also use the usecase keyword to define a
usecase.
And you can define an alias, using the as keyword.
This alias will be used later, when defining relations.
@startuml
(First usecase)
(Another usecase) as (UC2)
usecase UC3
usecase (Last\nusecase) as UC4
@enduml
Actors
The name defining an actor is enclosed between colons.
You can also use the actor keyword to define an actor.
An alias can be assigned using the as keyword and can be used later instead of the actor's name, e. g. when defining relations.
You can see from the following examples, that the actor definitions are optional.
@startuml
:First Actor:
:Another\nactor: as Man2
actor Woman3
actor :Last actor: as Person1
@enduml
Change Actor style
You can change the actor style from stick man (by default) to:
an awesome man with the skinparam actorStyle awesome command;
a hollow man with the skinparam actorStyle hollow command.
Stick man (by default)
@startuml
:User: --> (Use)
"Main Admin" as Admin
"Use the application" as (Use)
Admin --> (Admin the application)
@enduml
Awesome man
@startuml
skinparam actorStyle awesome
:User: --> (Use)
"Main Admin" as Admin
"Use the application" as (Use)
Admin --> (Admin the application)
@enduml
If you want to have description on several lines, you can use quotes.
You can also use the following separators: --..==__.
And you can put titles within the separators.
@startuml
usecase UC1 as "You can use
several lines to define your usecase.
You can also use separators.
--
Several separators are possible.
==
And you can add titles:
..Conclusion..
This allows large description."
@enduml
Usecases description
If you want to have a description spanning several lines, you can use quotes.
You can also use the following separators:
-- (dashes)
.. (periods)
== (equals)
__ (underscores)
By using them pairwise and enclosing text between them, you can created separators with titles.
@startuml
usecase UC1 as "You can use
several lines to define your usecase.
You can also use separators.
--
Several separators are possible.
==
And you can add titles:
..Conclusion..
This allows large description."
@enduml
Use package
You can use packages to group actors or use cases.
@startuml
left to right direction
actor Guest as g
package Professional {
actor Chef as c
actor "Food Critic" as fc
}
package Restaurant {
usecase "Eat Food" as UC1
usecase "Pay for Food" as UC2
usecase "Drink" as UC3
usecase "Review" as UC4
}
fc --> UC4
g --> UC1
g --> UC2
g --> UC3
@enduml
You can use rectangle to change the display of the package.
@startuml
left to right direction
actor "Food Critic" as fc
rectangle Restaurant {
usecase "Eat Food" as UC1
usecase "Pay for Food" as UC2
usecase "Drink" as UC3
}
fc --> UC1
fc --> UC2
fc --> UC3
@enduml
기본 예제
To link actors and use cases, the arrow --> is
used.
The more dashes - in the arrow, the longer the
arrow.
You can add a label on the arrow, by adding a :
character in the arrow definition.
In this example, you see that User has not been defined
before, and is used as an actor.
@startuml
User -> (Start)
User --> (Use the application) : A small label
:Main Admin: ---> (Use the application) : This is\nyet another\nlabel
@enduml
Basic example
To link actors and use cases, the arrow --> is
used.
The more dashes - in the arrow, the longer the
arrow.
You can add a label on the arrow, by adding a :
character in the arrow definition.
In this example, you see that User has not been defined
before, and is used as an actor.
@startuml
User -> (Start)
User --> (Use the application) : A small label
:Main Admin: ---> (Use the application) : This is\nyet another\nlabel
@enduml
Extension
If one actor/use case extends another one, you can use the symbol <|--.
@startuml
:Main Admin: as Admin
(Use the application) as (Use)
User <|-- Admin
(Start) <|-- (Use)
@enduml
Using notes
You can use the note left of , note right of ,
note top of , note bottom of keywords to
define notes related to a single object.
A note can be also define alone with the note
keywords, then linked to other objects using the .. symbol.
@startuml
:Main Admin: as Admin
(Use the application) as (Use)
User -> (Start)
User --> (Use)
Admin ---> (Use)
note right of Admin : This is an example.
note right of (Use)
A note can also
be on several lines
end note
note "This note is connected\nto several objects." as N2
(Start) .. N2
N2 .. (Use)
@enduml
Stereotypes
You can add stereotypes while defining actors and use cases using <<
and >>.
@startuml
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
Stereotypes
You can add stereotypes while defining actors and use cases using << and >>.
@startuml
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
화살표 방향 변경
기본적으로, 클래스간의 링크는 대쉬2개 -- 로 표시하고 수직방향이다.
다음 처럼 대쉬1개 (혹은 점)을 넣어서 수평방향 링크를 사용할 수 있다:
@startuml
:user: --> (Use case 1)
:user: -> (Use case 2)
@enduml
You can also change directions by reversing the link:
@startuml
(Use case 1) <.. :user:
(Use case 2) <- :user:
@enduml
It is also possible to change arrow direction by adding left, right, up
or down keywords inside the arrow:
You can shorten the arrow by using only the first character of the direction (for example, -d- instead of
-down-)
or the two first characters (-do-).
Please note that you should not abuse this functionality : Graphviz gives usually good results without
tweaking.
Changing arrows direction
By default, links between classes have two dashes -- and are vertically oriented.
It is possible to use horizontal link by putting a single dash (or dot) like this:
@startuml
:user: --> (Use case 1)
:user: -> (Use case 2)
@enduml
You can also change directions by reversing the link:
@startuml
(Use case 1) <.. :user:
(Use case 2) <- :user:
@enduml
It is also possible to change arrow direction by adding left, right, up
or down keywords inside the arrow:
You can shorten the arrow by using only the first character of the direction (for example, -d- instead of
-down-)
or the two first characters (-do-).
Please note that you should not abuse this functionality : Graphviz gives usually good results without
tweaking.
And with the left to right direction parameter:
@startuml
left to right direction
:user: -left-> (dummyLeft)
:user: -right-> (dummyRight)
:user: -up-> (dummyUp)
:user: -down-> (dummyDown)
@enduml
Splitting diagrams
The newpage keywords to split your diagram into several pages or images.
You can define specific color and fonts for stereotyped actors and usecases.
@startuml
skinparam handwritten true
skinparam usecase {
BackgroundColor DarkSeaGreen
BorderColor DarkSlateGray
BackgroundColor<< Main >> YellowGreen
BorderColor<< Main >> YellowGreen
ArrowColor Olive
ActorBorderColor black
ActorFontName Courier
ActorBackgroundColor<< Human >> Gold
}
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
Skinparam
You can use the skinparam
command to change colors and fonts for the drawing.
You can use this command :
In the diagram definition, like any other commands,
You can define specific color and fonts for stereotyped actors and usecases.
@startuml
skinparam handwritten true
skinparam usecase {
BackgroundColor DarkSeaGreen
BorderColor DarkSlateGray
BackgroundColor<< Main >> YellowGreen
BorderColor<< Main >> YellowGreen
ArrowColor Olive
ActorBorderColor black
ActorFontName Courier
ActorBackgroundColor<< Human >> Gold
}
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
Complete example
@startuml
left to right direction
skinparam packageStyle rectangle
actor customer
actor clerk
rectangle checkout {
customer -- (checkout)
(checkout) .> (payment) : include
(help) .> (checkout) : extends
(checkout) -- clerk
}
@enduml
