feat: Editor Gizmo——ImGuizmo 平移/旋转/缩放操纵杆

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- ImGuizmo 接入：Lib/ImGuizmo（src/ 布局）静态库，IMGUI_DEFINE_MATH_OPERATORS
- ViewportPanel：Vulkan→GL 投影转换（Y 翻回 + 深度 [-1,1]）、
  SetDrawlist/SetRect 叠加绘制、decompose 写回 TransformComponent
- W/E/R 切换（UE 语义）；拖拽中 BlockingMouse 门控（输入归 Gizmo）
- Dynamic 刚体选中提示：物理每帧写回，编辑被覆盖
- 修复：GizmoState.op 初值 0 无轴位（ImGuizmo::TRANSLATE=7）导致杆不绘制
- 点击拾取门控：抓杆时（IsOver/IsUsing）不发 pick 请求

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atdunbg

2026-10-02 23:16:52 +08:00

parent 56bb31638e

commit 3ec96acc0f

7 changed files with 140 additions and 7 deletions

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Lib/ImGuizmo

Submodule

+1

Submodule Lib/ImGuizmo added at 18cef5e031