generated: '2026-07-21'
method: searched
source: https://docs.snaptrude.com/ (Structure Collection data-format docs)
summary: >-
  The Snaptrude "Structure Collection" is the JSON data format describing how
  building data is serialized and organized. Entities below are drawn from the
  documented data-format and the Plugin API namespaces; relationships reflect the
  documented containment hierarchy (project -> buildings/storeys -> geometry).
entities:
  - name: Structure
    description: A building definition (top-level building container).
  - name: Storey
    description: A level/floor within a structure.
  - name: Layer
    description: Layer composition used by walls/slabs and other assemblies.
  - name: Sketch
    description: Freehand/parametric sketch input.
  - name: Floorplan
    description: A floorplan associated with a storey.
  - name: Container
    description: Grouping container for building elements.
  - name: Wall
    description: A wall element.
  - name: Space
    description: A space/room (create/update/query/delete live under design.*).
  - name: Geometry
    description: Geometry kernel entities (Brep, Face, Edge, HalfEdge, Vertex, Curve, Profile, Contour).
  - name: Material
    description: Material and rendering specification.
  - name: Light
    description: Light specification (Materials & Rendering).
  - name: Camera
    description: Camera specification (Materials & Rendering).
  - name: BuildableEnvelope
    description: Entity-namespace buildable envelope.
  - name: ReferenceLine
    description: Entity-namespace reference line.
  - name: Building
    description: Core project-organization building grouping.
  - name: Group
    description: Core project-organization group.
  - name: Tag
    description: Core project-organization tag.
relationships:
  - from: Structure
    to: Storey
    type: has_many
  - from: Storey
    to: Floorplan
    type: has_many
  - from: Storey
    to: Space
    type: has_many
  - from: Space
    to: Wall
    type: has_many
    via: bounding walls
  - from: Wall
    to: Layer
    type: has_many
    via: layer composition
  - from: Wall
    to: Geometry
    type: has_one
  - from: Structure
    to: Material
    type: has_many
metadata:
  note: Project metadata, user settings, and versioning are documented under "Metadata & Settings".