Fix: collision warnings #928

New Issue

MrUnknownDE · 2026-04-05T16:36:10+02:00

MrUnknownDE commented

2026-04-05 16:36:10 +02:00

Originally created by @tome9111991 on 1/31/2026

Description

This PR fixes a issue where collision warnings were missing in the "Prepare" tab and "Preview" tab when multiple instances of
the same object overlapped. It also improves conflict detection for the Wipe Tower.

The Problem
Previously, collision detection relied on caching convex hulls at the
ModelObject or ModelVolume level.

If two instances of the same object were on the plate, the second one would often use the cached hull of the first,
leading to missed collisions if they were positioned or rotated differently.
Users were able to overlap objects without receiving the expected "objects too close" or "collision" warning.

Fix https://github.com/OrcaSlicer/OrcaSlicer/issues/12077

Warning in Prepare tab:

Serious Warning in Preview tab for instance:

Serious Warning in Preview tab forWipe Tower:

*Originally created by @tome9111991 on 1/31/2026* # Description This PR fixes a issue where collision warnings were missing in the "Prepare" tab and "Preview" tab when multiple instances of the same object overlapped. It also improves conflict detection for the Wipe Tower. **The Problem** Previously, collision detection relied on caching convex hulls at the ModelObject or ModelVolume level. - If two instances of the same object were on the plate, the second one would often use the cached hull of the first, leading to missed collisions if they were positioned or rotated differently. - Users were able to overlap objects without receiving the expected "objects too close" or "collision" warning. Fix https://github.com/OrcaSlicer/OrcaSlicer/issues/12077 Warning in Prepare tab: <img width="849" height="702" alt="grafik" src="https://github.com/user-attachments/assets/3d1119bf-823c-4425-b615-e16f2f2ea2dd" /> Serious Warning in Preview tab for instance: <img width="739" height="618" alt="grafik" src="https://github.com/user-attachments/assets/79b19882-73f0-44d3-9423-9eb5971ade1a" /> Serious Warning in Preview tab forWipe Tower: <img width="744" height="610" alt="grafik" src="https://github.com/user-attachments/assets/a24f7a71-22cd-4f49-87f6-3b5b80582213" />

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Reference: github/OrcaSlicer#928