Bone-Parenting System: Connect sliced geometry to skeleton #14

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opened 2026-06-09 02:02:58 +00:00 by Mark · 0 comments

Mark commented

2026-06-09 02:02:58 +00:00

Owner

The skeleton system in src/pages/editor/store.ts and EditorScene.tsx has bones defined but no bone-parenting system to connect sliced geometry to the skeleton for posing.

Current State

Bones exist with hierarchical structure in store
Bone type has children array but no mesh parenting
SceneObject has parentId field but not auto-linked to bones
No skinning weights or vertex influence on sliced parts

Required Implementation

Auto-assign sliced parts to parent bones based on bounds/intersection
Create bone-mesh attachment system
Implement skinning weight calculation for vertex-bone influence
Update transform gizmo to respect bone parenting

Acceptance Criteria

Sliced parts automatically attach to nearest bone
Pose tool affects attached geometry correctly
Bone hierarchy applies transforms to child meshes
Weight painting interface for fine-tuning bone influences

The skeleton system in `src/pages/editor/store.ts` and `EditorScene.tsx` has bones defined but no bone-parenting system to connect sliced geometry to the skeleton for posing. ## Current State - Bones exist with hierarchical structure in store - `Bone` type has `children` array but no mesh parenting - `SceneObject` has `parentId` field but not auto-linked to bones - No skinning weights or vertex influence on sliced parts ## Required Implementation - Auto-assign sliced parts to parent bones based on bounds/intersection - Create bone-mesh attachment system - Implement skinning weight calculation for vertex-bone influence - Update transform gizmo to respect bone parenting ## Acceptance Criteria - [ ] Sliced parts automatically attach to nearest bone - [ ] Pose tool affects attached geometry correctly - [ ] Bone hierarchy applies transforms to child meshes - [ ] Weight painting interface for fine-tuning bone influences