A professional, high-performance real-time 3D GCode visualization extension for Visual Studio Code, powered by Three.js.
Features
Real-Time 3D Rendering: True 3D tube geometry (using InstancedMesh) showing depth, volume, and shading. Far superior to basic flat line renders.
Accurate Layer Analysis: Correctly separates toolpaths into discrete layers, even ignoring complex Z-Hops.
Live Reload: Edit your .gcode script manually and watch the 3D model update seamlessly on the fly.
Support for Slicer Standards: Out of the box support for absolute (G90) / relative (G91) positioning, and extruder modes (M82 / M83).
Webview Architecture: Zero native binaries required. Everything runs blazingly fast in the native VSCode Webview.
Adjustable Aesthetics: Simulate the bed of your exact printer directly from VSCode Settings (e.g., Bed size, Base Theme, Extrusion Color).
Usage
Open any .gcode file.
Click the "Open GCode Preview" button located at the top right of your Editor Title bar (the Eye/Preview icon).
Alternatively, open the VSCode Command Palette (Ctrl+Shift+P ou Cmd+Shift+P) and type GCode Viewer: Open Preview.
Configuration Options
This extension contributes the following variables to your VSCode settings:
gcodePreview.bedSize: Default bed size in mm (e.g. 220).
gcodePreview.theme: Set to dark or light background style.
gcodePreview.extrusionColor: The hex color for printed lines (e.g. #ff7a00).
Security and Performance
GCode Preview is heavily optimized out-of-the-box. We leverage raw WebGL arrays (InstancedMesh) to minimize Draw Calls, completely preventing memory leaks with garbage-collected buffers. Strict Content Security Policy (CSP) is implemented to keep your VSCode workspace rock solid.
Issues and Feedback
If you find a bug or have a suggestion, please open an issue in the repository.
