关键节点

editor/app/Scene/SceneToolState.h

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+#pragma once
+
+#include <XCEngine/Components/GameObject.h>
+#include <XCEngine/Core/Math/Quaternion.h>
+#include <XCEngine/Core/Math/Vector3.h>
+#include <XCEngine/UI/Types.h>
+
+#include <cstddef>
+#include <cstdint>
+#include <string_view>
+
+namespace XCEngine::UI::Editor::App {
+
+enum class SceneToolMode : std::uint8_t {
+    View = 0,
+    Translate,
+    Rotate,
+    Scale,
+    Transform
+};
+
+enum class SceneToolSpaceMode : std::uint8_t {
+    World = 0,
+    Local
+};
+
+enum class SceneToolPivotMode : std::uint8_t {
+    Pivot = 0,
+    Center
+};
+
+enum class SceneToolHandle : std::uint8_t {
+    None = 0,
+    AxisX,
+    AxisY,
+    AxisZ
+};
+
+enum class SceneToolInteractionLock : std::uint8_t {
+    None = 0,
+    TransformDrag
+};
+
+std::string_view GetSceneToolModeName(SceneToolMode mode);
+std::string_view GetSceneToolSpaceModeName(SceneToolSpaceMode mode);
+std::string_view GetSceneToolPivotModeName(SceneToolPivotMode mode);
+std::string_view GetSceneToolHandleName(SceneToolHandle handle);
+std::string_view GetSceneToolInteractionLockName(SceneToolInteractionLock lock);
+
+struct SceneTransformSnapshot {
+    ::XCEngine::Components::GameObject::ID targetId =
+        ::XCEngine::Components::GameObject::INVALID_ID;
+    ::XCEngine::Math::Vector3 position = ::XCEngine::Math::Vector3::Zero();
+    ::XCEngine::Math::Quaternion rotation =
+        ::XCEngine::Math::Quaternion::Identity();
+    ::XCEngine::Math::Vector3 scale = ::XCEngine::Math::Vector3::One();
+    bool valid = false;
+
+    bool IsValid() const {
+        return valid &&
+            targetId != ::XCEngine::Components::GameObject::INVALID_ID;
+    }
+};
+
+struct SceneToolDragState {
+    bool active = false;
+    SceneToolMode mode = SceneToolMode::View;
+    SceneToolHandle handle = SceneToolHandle::None;
+    ::XCEngine::UI::UIPoint startPointerPosition = {};
+    SceneTransformSnapshot initialTransform = {};
+};
+
+struct SceneToolState {
+    SceneToolMode mode = SceneToolMode::Translate;
+    SceneToolSpaceMode spaceMode = SceneToolSpaceMode::World;
+    SceneToolPivotMode pivotMode = SceneToolPivotMode::Pivot;
+    SceneToolHandle hoveredHandle = SceneToolHandle::None;
+    SceneToolHandle activeHandle = SceneToolHandle::None;
+    SceneToolInteractionLock interactionLock = SceneToolInteractionLock::None;
+    SceneToolDragState dragState = {};
+};
+
+} // namespace XCEngine::UI::Editor::App