@startuml
abstract class Feature {
    {static} EditorForm: Form
}

class Source {
    name: str
    bottom: Decimal
    left: Decimal
    top: Decimal
    right: Decimal
    image: file
}
Feature <|-- Source

class Section {
    name: str
    altitude: Decimal
}
Feature <|-- Section

abstract class GeometryFeature {
    {static} geomtype: str
    geometry: Geometry
}
Feature <|-- GeometryFeature

abstract class SectionFeature {
    section: Section
}
Section *-- SectionFeature: section
GeometryFeature <|-- SectionFeature

class Building {
}
SectionFeature <|-- Building

class Space {
    public: bool
    category: str
    layer: str
}
SectionFeature <|-- Space

class Door {
}
SectionFeature <|-- Door

class Hole {
}
SectionFeature <|-- Hole

abstract class SpaceFeature {
    space: Space
}
Space *-- SpaceFeature: space
GeometryFeature <|-- SpaceFeature

class StuffedArea {
}
SpaceFeature <|-- StuffedArea

class Stair {
}
SpaceFeature <|-- Stair

class Obstacle {
}
SpaceFeature <|-- Obstacle

class LineObstacle {
    width: Decimal
}
SpaceFeature <|-- LineObstacle
@enduml