如何让PlantUML中IIngredient抽象类居中，子类环绕排布？

当前使用的PlantUML代码 #

@startuml
'https://plantuml.com/component-diagram


together {
class Rice {

}
class Egg extends IIngredient{

}
class Avocado extends IIngredient{

}
IIngredient <|-- Rice
}

abstract class IIngredient {
  @protected
  List<String>? allergens;
  @protected
  String? name;
  @protected
  int? price;

  String? getAllergens()
  String? getName()
  int? getPrice()
}

class Salmon {

}
class Tuna {

}
IIngredient <|-- Salmon
IIngredient <|-- Tuna

class Sesame extends IIngredient{

}

class Crisp extends IIngredient {

}
@enduml

当前生成的类图效果 #

期望的布局效果 #

修改后的代码（实现居中环绕布局） #

@startuml
' 设置布局为环绕中心类
circle IIngredient

abstract class IIngredient {
  @protected
  List<String>? allergens;
  @protected
  String? name;
  @protected
  int? price;

  String? getAllergens()
  String? getName()
  int? getPrice()
}

' 统一继承关系写法，去掉不必要的together块
class Rice extends IIngredient {}
class Egg extends IIngredient {}
class Avocado extends IIngredient {}
class Salmon extends IIngredient {}
class Tuna extends IIngredient {}
class Sesame extends IIngredient {}
class Crisp extends IIngredient {}

@enduml

关键调整说明 #

• 移除原代码中的together块，避免强制类聚集，影响自动布局逻辑
• 添加circle IIngredient指令，让所有继承该抽象类的子类自动环绕在其周围
• 统一使用extends关键字定义继承关系，简化代码结构
• 清理类定义中的冗余空行，保持代码整洁

内容的提问来源于stack exchange，提问作者Cyrus the Great