User feedback: the move tool's CursorSphere is just a vertical line,
hard to tell what you're moving. Placement gets a translucent shape
that follows the cursor; move should too.
NodeDefinition.preview?: () => Promise<{ default: ComponentType<{ node }> }>
opt-in lazy component that renders a translucent ghost of the node.
Used by:
- The placement tool (ShelfTool) — renders the preview at the cursor
position so the user sees the shape they're placing.
- The move tool (MoveRegistryNodeTool) — renders the preview at the
drag target alongside the CursorSphere. Plus the original node is
also dragged via live transforms, so the user sees both: the actual
node moving + a translucent ghost at the same spot.
Implementation:
- New nodes/shelf/preview.tsx: ShelfPreview component. Renders the
same shape as ShelfRenderer but `transparent: true, opacity: 0.5`.
- shelfDefinition.preview = () => import('./preview').
- ShelfTool's placement preview now uses <ShelfPreview node={defaults} />
instead of an inline copy of the box geometry.
- MoveRegistryNodeTool lazy-loads `def.preview` (cached by loader,
Suspense-wrapped). If a kind doesn't define `preview`, only the
CursorSphere shows — matches today's behavior.
Phase 4 may merge `preview` with `renderer` behind an `opacity` prop
so kinds don't duplicate JSX between the solid and translucent
versions; until then defining `preview` is opt-in and one extra file.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
