Init Repo

2026-06-03 09:00:11 +08:00
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+## ADDED Requirements
+
+### Requirement: Transform manipulator renders only in the focused viewport tile
+The transform gizmo (manipulator) SHALL render and accept input only in the tile that was most recently clicked. All other tiles SHALL NOT display the gizmo.
+
+#### Scenario: Focused tile shows gizmo, other tile does not
+- **WHEN** the user clicks in tile A (making it focused), then selects a prim
+- **THEN** the transform gizmo appears over the selection in tile A only; tile B shows no gizmo
+
+#### Scenario: Move focus to another tile
+- **WHEN** the user clicks in tile B while tile A was focused
+- **THEN** the gizmo disappears from tile A and appears in tile B over the selection
+
+### Requirement: Manipulator mode and space are global
+The manipulator tool mode (Select/Move/Rotate/Scale) and transform space (World/Object) SHALL be global settings shared across all tiles, owned by the `ViewportPanel` container.
+
+#### Scenario: Change manipulator mode in focused tile
+- **WHEN** the user presses W (Move) while tile A is focused
+- **THEN** the mode switches to Move globally, and if the user clicks in tile B, tile B's gizmo is in Move mode
+
+### Requirement: Keyboard shortcuts route to focused tile
+Keyboard shortcuts for the manipulator (Q/W/E/R), frame selection (F), frame all (A), and maximize toggle (Space) SHALL only apply to the focused tile.
+
+#### Scenario: Frames selection in focused tile only
+- **WHEN** the user presses F while tile A is focused
+- **THEN** tile A's camera frames the selection; other tiles' cameras remain unchanged
+
+#### Scenario: Tool shortcut changes global mode
+- **WHEN** the user presses W while tile A is focused
+- **THEN** the global manipulator mode changes to Move, and the focused tile (A) shows the Move gizmo if a prim is selected