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feat: Multicut Split Previews - #1092

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dxenes1:add-split-preview
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feat: Multicut Split Previews#1092
dxenes1 wants to merge 1 commit into
google:masterfrom
dxenes1:add-split-preview

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@dxenes1

@dxenes1 dxenes1 commented Aug 5, 2026

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Adds Graphene multicut split preview to Neuroglancer using the temporary segment/equivalence display path.

Implementation Notes

  • Calls /graph/split_preview
  • Caches preview results until the multicut seed set changes
  • Toggles the preview through a new Preview button
  • Blocks submission when the cached preview is illegal
  • Colors the first two preview components red and blue in 2D
  • Keeps the original focusSegment visible so the existing 3D mesh remains rendered

Demo Video:
https://github.com/user-attachments/assets/fee938a2-bc2b-4189-8ae4-2d0738a48d4d

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