Slice Tool: Create attachment joints at cut boundaries #12

New issue

Closed

opened 2026-06-09 02:02:33 +00:00 by Mark · 0 comments

Mark commented

2026-06-09 02:02:33 +00:00

Owner

The slice tool in src/pages/editor/LeftToolbar.tsx and src/pages/editor/EditorScene.tsx creates visual splits but does not generate proper attachment geometry or joints at cut edges.

Current State

Slice plane visual exists with draggable controls
applySlice() in src/pages/editor/store.ts splits objects but only modifies scale/position
No actual mesh cutting occurs - just visual clipping
No attachment surfaces created at cut boundaries

Required Implementation

Implement CSG-style mesh cutting using Three.js utils or custom implementation
Generate circular/slot-shaped attachment joints at intersection edges
Store cut boundary metadata (attachment points) in scene objects
Visualize attachment points in viewport

Acceptance Criteria

Actual mesh geometry is split into separate objects
Attachment joints created at slice intersection edges
Attachment data stored on resulting pieces
Attachment points visible in joint tool mode

The slice tool in `src/pages/editor/LeftToolbar.tsx` and `src/pages/editor/EditorScene.tsx` creates visual splits but does not generate proper attachment geometry or joints at cut edges. ## Current State - Slice plane visual exists with draggable controls - `applySlice()` in `src/pages/editor/store.ts` splits objects but only modifies scale/position - No actual mesh cutting occurs - just visual clipping - No attachment surfaces created at cut boundaries ## Required Implementation - Implement CSG-style mesh cutting using Three.js `utils` or custom implementation - Generate circular/slot-shaped attachment joints at intersection edges - Store cut boundary metadata (attachment points) in scene objects - Visualize attachment points in viewport ## Acceptance Criteria - [ ] Actual mesh geometry is split into separate objects - [ ] Attachment joints created at slice intersection edges - [ ] Attachment data stored on resulting pieces - [ ] Attachment points visible in joint tool mode