Rbanh
0798aa5d57
Add dedicated skinned rendering, pose restoration, shared Material and Material Instance slots, registry-driven components, Surface/Solari integration, transactional schema upgrades, navigation authoring, documentation, and evaluation evidence.
24 lines
1.4 KiB
Markdown
24 lines
1.4 KiB
Markdown
# ADR 0021: Brush Authoring Schema
|
|
|
|
## Status
|
|
|
|
Accepted
|
|
|
|
## Context
|
|
|
|
Jackdaw roadmap work needs blockout geometry that is editable as authored data, survives scene saves, hydrates into runtime render/physics components, and can later support face/edge/vertex tools and CSG operators. Treating brushes as imported static meshes would hide the authoring intent and make later geometry edits depend on generated artifacts.
|
|
|
|
## Decision
|
|
|
|
Add `ActorKind::Brush` and `BrushDesc` as persisted shared authoring data. A brush stores convex polygon faces with stable face IDs, plane data, material/texture references, UV parameters, smoothing group, and shadow flags. The MVP supports additive cube brushes and hydrates active brush components into generated mesh children; generated children are stripped from saved scenes.
|
|
|
|
Brush actors conflict with `Primitive`, `StaticMeshRenderer`, `SkinnedMeshRenderer`, `LightDesc`,
|
|
and `ModelRef` in actor validation. Scene v1-to-v2 kind backfill infers `ActorKind::Brush` when an
|
|
older level object contains `BrushDesc`.
|
|
|
|
## Consequences
|
|
|
|
Brush geometry is now a first-class scene authoring type rather than a renderer slot variant. Future face editing, clipping, and CSG tools should mutate `BrushDesc` and rebuild the generated preview mesh through hydration.
|
|
|
|
The MVP intentionally does not implement viewport face/edge/vertex tools, non-convex validation UI, or subtractive CSG evaluation. Those remain roadmap work.
|