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Dion Moult
1c598a981e
Adds VisibilityState, a CPU-only sibling to SelectionState. It owns the canonical hidden-id set plus a flat per-object_id byte vector that the cull's hot path queries inline (bounds check + byte load + compare per surviving instance). Hidden elements never reach the visible[] SSBO so they don't draw or pick — matching Blender/CAD convention. ViewportWindow registers every streamed and sidecar-cached object_id with the new state, resets it on clearScene, and connects the changed signal to invalidate cached cull state. Three convenience verbs: hideSelectedElements (union into hidden), isolateSelectedElements (replace hidden with live-object_ids minus selection, skipping model-hidden models so element-hide doesn't pile on top of model-hide), and showAllElements (clears the override; model-hidden models stay hidden, per the user's spec). Bound in the View menu: H hide, Shift+H isolate, Alt+H show all. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>