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feat: G2/G3 Arc Support — Bounding Box, Wipe Path, and Absolute Extrusion Fix #49

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feat: G2/G3 Arc Support — Bounding Box, Wipe Path, and Absolute Extrusion Fix #49

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25 changes: 22 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
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# Bricklayers
# Bricklayers (Patched Fork)
Interlocking Layers Post-Processing Script for PrusaSlicer, OrcaSlicer, and BambuStudio

This fork adds fixes and features on top of [GeekDetour/BrickLayers](https://github.com/GeekDetour/BrickLayers).

## Added Features

### G2/G3 Arc Support
Arc fitting can now be left **enabled** in your slicer. This fork properly handles G2/G3 arc commands:
- **Bounding box:** Computes true arc bounding box via cardinal angle crossing detection (not just endpoints)
- **Wipe path:** Arc-aware distance calculation and endpoint interpolation for correct wipe retracing

### Feature Branches for Upstream PRs

| Branch | Feature |
|---|---|
| [`arc-support`](../../tree/arc-support) | G2/G3 arc bounding box and wipe path |

---

## Original README

## Video about this script:
[![Brick Layers for everybody](https://img.youtube.com/vi/qqJOa46OTTs/maxresdefault.jpg)](https://www.youtube.com/watch?v=qqJOa46OTTs)

Expand Down Expand Up @@ -55,8 +74,8 @@ In "Quality", "Walls printing order" be sure you select **"Inner/Outer"** - this
In **Prusa Slicer** you can choose **Classic** or **Arachne**, both work equaly fine.
But on **Orca Slicer** and **Bambu Studio** forks, Arachne sometimes creates orphaned loops that will turn into minor glitches in Brick Layers (I cannot fix, so far) - so I recommend **'Classic'**.

### **Disable Arc fitting** (for now)
The plan, from the beginning, is to support ARC. But it's not completely done yet - it needs an algorithm to calculate Bounding Boxes of the exact area an arc of any arbitrary angle occupies, ideally without making the script much slower.
### **Arc fitting** (now supported in this fork)
This fork adds full G2/G3 arc support — you can leave arc fitting **enabled** in your slicer settings.

### **Binary G-code** on Prusa Slicer:
You must **disable** `"Supports binary G-code"` in **Printers → General → Firmware** (Expert Mode)
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