## Summary
Extract duplicated click-vs-drag detection logic into a shared
`useClickDragGuard` composable and `exceedsClickThreshold` pure utility
function.
## Changes
- **What**: New `useClickDragGuard(threshold)` composable in
`src/composables/useClickDragGuard.ts` that stores pointer start
position and checks squared distance against a threshold. Also exports
`exceedsClickThreshold` for non-Vue contexts.
- Migrated `DropZone.vue`, `useNodePointerInteractions.ts`, and
`Load3d.ts` to use the shared utility
- `CanvasPointer.ts` left as-is (LiteGraph internal)
- All consumers now use squared-distance comparison (no `Math.sqrt` or
per-axis `Math.abs`)
## Review Focus
- The composable uses plain `let` state instead of `ref` since
reactivity is not needed for the start position
- `Load3d.ts` uses the pure `exceedsClickThreshold` function directly
since it is a class, not a Vue component
- Threshold values preserved per-consumer: DropZone=5,
useNodePointerInteractions=3, Load3d=5
Fixes#10356
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10357-refactor-extract-shared-click-vs-drag-guard-utility-32a6d73d3650816e83f5cb89872fb184)
by [Unito](https://www.unito.io)
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>
