Files
editor/wiki/architecture
Wassim SAMADandClaude Opus 4.7 7b946ce8b7 wiki: add node-definitions doc for three-checkbox composition model
New page covering the geometry/renderer/system trio that registry-driven
kinds opt into. Documents:

- The three optional fields on NodeDefinition and when each applies
- Generic <GeometrySystem> + <ParametricNodeRenderer> runtime
- GeometryContext shape (resolve / children / siblings / parent)
- Combination matrix for shelf / spawn / zone / door / window / GLB items
- Migration recipe from custom renderer+system files to def.geometry
- Rules around purity, dispose-on-rebuild, register-once

renderers.md and systems.md gain "prefer registry-driven" banners and
link out to the new page. Architecture README adds the page to the
index so review-architecture skill picks it up.

The pattern was validated by the shelf spike: inline-JSX geometry was
visibly laggy on parametric edits; moving to a per-kind system reading
dirtyNodes (mirroring door/wall/item) restored smoothness. The three-
checkbox model generalises that win so most future kinds need only a
pure geometry function.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-15 08:29:54 -04:00
..

Architecture

Canonical rules for code that touches packages/core, packages/viewer, packages/editor, packages/mcp, or apps/editor. Read on demand from AGENTS.md and from .agents/skills/review-architecture/SKILL.md.

Pages

Page Covers
layers Three.js layer constants, ownership, and rendering separation
systems Core and viewer systems architecture
renderers Node renderer pattern in packages/viewer
node-definitions Three-checkbox composition model for registry-driven kinds (geometry / renderer / system)
tools Editor tools structure in apps/editor
viewer-isolation Keeping @pascal-app/viewer editor-agnostic
selection-managers Two-layer selection (viewer + editor), events, outliner
scene-registry Global node ID → Object3D map and useRegistry
spatial-queries Placement validation (canPlaceOnFloor/Wall/Ceiling) for tools
node-schemas Zod schema pattern for node types, createNode, updateNode
events Typed event bus — emitting and listening to node and grid events
creating-rules How to add or update a page in this folder

Reading order for an architecture review

  1. layers, systems, renderers, tools, viewer-isolation — required every review.
  2. The remaining pages on demand, based on what the diff touches.