Raft Geometry

DragonFruit raft generation produces a sacrificial base derived from support roots.

Geometry pipeline

1. Compute footprint from support-root circles (convex hull + margin).
2. Generate chamfered base plate.
3. Optionally generate perimeter wall (crenelated behavior where configured).

Design intent

• Improve adhesion and support network stability.
• Ease removal via chamfer profile.
• Reduce suction issues with perimeter gap strategy.
• Keep the raft material-efficient while still forming a stable base.

Implementation notes

• The raft footprint is derived from support-root circles, then regenerated when rooted support topology changes.
• Manual geometry construction is preferred where triangulation artifacts become visible.
• The export pipeline includes raft geometry when enabled.

Validation

• No NaN vertices.
• Correct winding and normals.
• Watertight output for export paths.