Fix emulated spiral Z-hop XY offset on multi-plate slicing#11468
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Noisyfox merged 1 commit intoNov 25, 2025
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* main: (272 commits) Delete validate-documentation.yml (OrcaSlicer#11477) Update printer profiles for Artillery (OrcaSlicer#11284) Fix emulated spiral Z-hop XY offset on multi-plate slicing (OrcaSlicer#11468) Move WIKI to new repo Validate invalid fields for hidden system profiles (OrcaSlicer#11455) ci: Increase timeout for dedupe-issues workflow from 10 to 30 minutes Fix CICD AI dedupe Change runner from self-hosted to ubuntu-latest Check duplicated issues. ported from Claude code repo (OrcaSlicer#11454) UI fixes / improvements (OrcaSlicer#11413) Fix Spiral Z-Hop arc handling (OrcaSlicer#11430) FIX: Open provided file at startup (OrcaSlicer#11419) Re-include BBS's Clipperutils2 (OrcaSlicer#11415) Fix filament profile import if inherit from vendor generic (OrcaSlicer#11398) Fix crash after syncing printer (OrcaSlicer#11428) Wiki 16 (MiniUpdate): Updated by Stable cmake 4.2 release + VS2026 First (OrcaSlicer#11423) Revert "fix GITHUB_TOKEN permissions in workflows (OrcaSlicer#11392)" correct oversight in OrcaSlicer#11392 (OrcaSlicer#11404) Profiles for Creality K2 Pro printer (OrcaSlicer#11315) Reduce artifacts from short travel moves before external perimeters (OrcaSlicer#10722) ...
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* upd-eigen-5.0.0: (273 commits) Delete validate-documentation.yml (OrcaSlicer#11477) Update printer profiles for Artillery (OrcaSlicer#11284) Fix emulated spiral Z-hop XY offset on multi-plate slicing (OrcaSlicer#11468) Move WIKI to new repo Validate invalid fields for hidden system profiles (OrcaSlicer#11455) ci: Increase timeout for dedupe-issues workflow from 10 to 30 minutes Fix CICD AI dedupe Change runner from self-hosted to ubuntu-latest Check duplicated issues. ported from Claude code repo (OrcaSlicer#11454) UI fixes / improvements (OrcaSlicer#11413) Fix Spiral Z-Hop arc handling (OrcaSlicer#11430) FIX: Open provided file at startup (OrcaSlicer#11419) Re-include BBS's Clipperutils2 (OrcaSlicer#11415) Fix filament profile import if inherit from vendor generic (OrcaSlicer#11398) Fix crash after syncing printer (OrcaSlicer#11428) Wiki 16 (MiniUpdate): Updated by Stable cmake 4.2 release + VS2026 First (OrcaSlicer#11423) Revert "fix GITHUB_TOKEN permissions in workflows (OrcaSlicer#11392)" correct oversight in OrcaSlicer#11392 (OrcaSlicer#11404) Profiles for Creality K2 Pro printer (OrcaSlicer#11315) Reduce artifacts from short travel moves before external perimeters (OrcaSlicer#10722) ...
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This PR fixes an issue where the emulated spiral Z-hop produced incorrect XY positions when slicing objects on plates other than the first one.
What was wrong
The emulated spiral Z-hop (the linear-segment fallback used when arc fitting is disabled) mixed world coordinates with plate-local coordinates.
On multi-plate layouts this caused the generated XY points of the spiral to be shifted by the plate offset, so the lift arc appeared outside the build plate.
What’s changed
The spiral is now computed entirely in plate-local coordinates, matching how all other travel moves are emitted.
This keeps the start and end XY identical and prevents XY drift when slicing on additional plates.
Fixes #11465