# 40 - Phase 2.5 Advanced Precision Tools (TASK-018)

**Date:** 2025-11-29
**Version:** 1.14.0

## Summary

Implemented Phase 2.5 Advanced Precision mesh tools for precise geometry manipulation, slicing, and topology management.

## New Tools

| Tool | Description | Tag |
|------|-------------|-----|
| `mesh_bisect` | Cuts mesh along a plane with optional clear/fill | `[EDIT MODE][SELECTION-BASED][DESTRUCTIVE]` |
| `mesh_edge_slide` | Slides selected edges along mesh topology | `[EDIT MODE][SELECTION-BASED][DESTRUCTIVE]` |
| `mesh_vert_slide` | Slides selected vertices along connected edges | `[EDIT MODE][SELECTION-BASED][DESTRUCTIVE]` |
| `mesh_triangulate` | Converts selected faces to triangles | `[EDIT MODE][SELECTION-BASED][DESTRUCTIVE]` |
| `mesh_remesh_voxel` | Performs voxel remesh on object | `[OBJECT MODE][DESTRUCTIVE]` |

## Files Changed

### Server (MCP)
- `server/domain/tools/mesh.py` - Added 5 interface methods
- `server/application/tool_handlers/mesh_handler.py` - Added 5 RPC bridge implementations
- `server/adapters/mcp/areas/mesh.py` - Added 5 MCP tool definitions with docstrings

### Blender Addon
- `blender_addon/application/handlers/mesh.py` - Added 5 Blender implementations
- `blender_addon/__init__.py` - Registered 5 new RPC handlers

### Tests
- `tests/test_mesh_precision.py` - Added 22 pytest-style tests

## API Details

### mesh_bisect
```python
mesh_bisect(
    plane_co: List[float],      # Point on cutting plane [x, y, z]
    plane_no: List[float],      # Normal direction [x, y, z]
    clear_inner: bool = False,  # Remove geometry on negative side
    clear_outer: bool = False,  # Remove geometry on positive side
    fill: bool = False          # Fill cut with face (cap)
)
```

### mesh_edge_slide
```python
mesh_edge_slide(
    value: float = 0.0          # Slide amount (-1.0 to 1.0)
)
```

### mesh_vert_slide
```python
mesh_vert_slide(
    value: float = 0.0          # Slide amount (-1.0 to 1.0)
)
```

### mesh_triangulate
```python
mesh_triangulate()              # No parameters - operates on selection
```

### mesh_remesh_voxel
```python
mesh_remesh_voxel(
    voxel_size: float = 0.1,    # Size of voxels
    adaptivity: float = 0.0     # Polygon reduction in flat areas (0-1)
)
```

## Tests

All 22 new tests passing:
- `TestMeshBisect` (6 tests)
- `TestMeshEdgeSlide` (4 tests)
- `TestMeshVertSlide` (4 tests)
- `TestMeshTriangulate` (3 tests)
- `TestMeshRemeshVoxel` (5 tests)

Total project tests: 201 passed, 19 skipped.

## Related Tasks
- TASK-018-1: Mesh Bisect Tool ✅
- TASK-018-2: Mesh Edge/Vertex Slide Tools ✅
- TASK-018-3: Mesh Triangulate Tool ✅
- TASK-018-4: Mesh Remesh Voxel Tool ✅
