Visualizer 2

README.md

@@ -16,8 +16,10 @@ visualizer/
 │   ├── __init__.py           # lightweight; no heavy imports
 │   ├── __main__.py           # CLI: `python -m wired3d_viewer view|serve`
 │   ├── parser.py             # NC dialect reader (standard library only)
-│   ├── viewer.py             # Plotly figure builder + HTML writer
-│   ├── server.py             # drag-and-drop local web front end
+│   ├── viewer.py             # NC Plotly figure builder + HTML writer
+│   ├── server.py             # NC drag-and-drop local web front end
+│   ├── stl_viewer.py         # STL mesh figure builder + HTML writer
+│   ├── server2.py            # STL drag-and-drop local web front end
 │   └── assets/
 │       └── wired3d.avif      # logo, embedded into the HTML as a data URI
 ```
@@ -50,6 +52,21 @@ python -m wired3d_viewer serve 9000       # custom port
 wired3d serve                             # same, if installed
 ```
 
+### STL mesh viewer ("server 2")
+
+View a raw `.stl` part in 3D *before* slicing — rotate/zoom with the mouse. Once
+a part is loaded a **Slice & Visualize** button (with layer-height / infill
+inputs) runs `stl_slicer` and shows the resulting toolpath with the NC viewer on
+the same page; "Back to mesh" flips back. (Per-coordinate direction vectors are
+the next feature and are not drawn yet.)
+
+```bash
+python -m wired3d_viewer view-stl path/to/part.stl   # writes <stem>_stl_viewer.html
+python -m wired3d_viewer serve-stl                    # http://127.0.0.1:8766
+python -m wired3d_viewer serve-stl 9001               # custom port
+wired3d view-stl part.stl   /   wired3d serve-stl     # same, if installed
+```
+
 Parse only (no visualisation, no third-party deps):
 
 ```python