name: Blender Python API Vocabulary
description: Key terms and concepts used in the Blender Python API (bpy) and addon development
terms:
  - term: bpy
    definition: >-
      The top-level Python module providing access to Blender's internal data, operators,
      context, utilities, and application properties. The primary namespace for Blender scripting.
  - term: Operator
    definition: >-
      A Python class (bpy.types.Operator) representing a reusable command that can be
      executed from menus, panels, keyboard shortcuts, or scripts. Operators expose
      properties and have execute(), invoke(), and poll() methods.
  - term: Addon
    definition: >-
      A Python package or module extending Blender's functionality. Addons define operators,
      panels, menus, and other UI components via register() and unregister() functions.
  - term: RNA (RNA Network Architecture)
    definition: >-
      Blender's internal data model and property system. bpy.props types (BoolProperty,
      IntProperty, etc.) use RNA to expose properties to Blender's UI and Python API.
  - term: Mesh
    definition: >-
      A 3D object type in Blender consisting of vertices, edges, and faces. Accessible
      via bpy.data.meshes and manipulable via the bmesh module.
  - term: bmesh
    definition: >-
      A Python module providing low-level access to mesh data for creation and manipulation
      of vertices, edges, and faces independent of Blender's edit mode.
  - term: Context (bpy.context)
    definition: >-
      The current state of Blender's UI including active object, selected objects, scene,
      space data, and region. Operators use context to determine their applicability via poll().
  - term: Data (bpy.data)
    definition: >-
      The global Blender data block providing access to all datablocks: meshes, objects,
      materials, scenes, cameras, lights, armatures, images, and more.
  - term: Geometry Nodes
    definition: >-
      A node-based procedural modeling system in Blender enabling non-destructive
      geometry manipulation via a visual programming interface, accessible via Python API.
  - term: Cycles
    definition: >-
      Blender's physically-based path-tracing render engine supporting CPU and GPU rendering.
      Render settings are accessible and configurable via the bpy Python API.
  - term: EEVEE
    definition: >-
      Blender's real-time rasterization render engine providing fast interactive rendering
      with PBR materials, screen-space effects, and volumetrics.
  - term: Headless Mode
    definition: >-
      Running Blender via command-line without a GUI (blender --background) for batch
      rendering, script execution, and automated pipeline processing.