v0.0.0.5-alpha — macOS Canvas UX sprint II

macOS — v0.0.0.5-alpha

New features

Multi-select & Group

• Lasso selection — left-drag on empty canvas draws a rubber-band rectangle; all pieces with any vertex inside are selected. Shift+drag = additive.
• Group / Ungroup — select 2+ pieces → Group button assigns a shared userGroupId; grouped pieces move together on drag. Groups are persisted in the .4hu project bundle (userGroups field).
• Right-drag pan — right mouse button drag pans the canvas (replaces the old left-drag-everywhere pan).

Rotate handle

• When 1 piece or 1 group is selected, a ↺ handle appears 44 pt above the centroid with an orange dashed stem.
• Drag the handle to rotate around the effective centroid. Single piece: only pieceRotations updated. Group: all pieces rotate as a rigid body (both pieceRotations and pieceOffsets updated per piece).

Smart join / disjoin

• Disjoin (fold → cut): separated piece is nudged +30 mm right/down so it doesn't overlap the parent, instead of auto-arranging everything.
• Join (cut → fold): click 1 shows a dashed preview arrow between piece centroids (mouse proximity determines anchor/moving direction); any click 2 confirms the join and snaps the merged piece to the anchor's old position.

Bug fixes (since v0.0.0.1-alpha)

• Pieces no longer collapse on first edge/flap click after unfold
• Page grid now expands dynamically when dragging pieces beyond boundaries
• Flap direction corrected (was inward, now outward)
• App no longer auto-unfolds on mesh load

Build info

• Branch: feat/unfold-size-dialog
• Commit: 8f8cb35
• 87 unit tests passing
• macOS 13 Ventura or later required
• Ad-hoc signed — right-click → Open on first launch

Installation

1. Download 4H-Unfolder_v0.0.0.5-alpha_mac.zip
2. Unzip and drag 4H Unfolder.app to Applications
3. First launch: right-click → Open (bypasses Gatekeeper for unsigned builds)