Interface DropTarget<TPose>

Optional axis-aligned region (world units) used by region-aware snaps (e.g. containedThenNearest). When present, a pointer inside this rect is treated as a containment hit on this target. Strategies that emit region-shaped targets (gutters, drop-zones) should populate this. Strategies whose targets are point-like (free-form, snap-point) can omit it and rely on origin-distance snaps.

Strategy-private metadata (e.g. cell coords for tile-grid).

Reference point for distance metrics (snap algorithms).

Where the dragged child lands if this target is picked.