refactor: move scene view selection utilities into renderer

engine/include/XCEngine/Rendering/RenderSceneExtractor.h

@@ -57,10 +57,6 @@ public:
         Components::CameraComponent* overrideCamera) const;
 
 private:
-    RenderCameraData BuildCameraData(
-        const Components::CameraComponent& camera,
-        uint32_t viewportWidth,
-        uint32_t viewportHeight) const;
     void ExtractLighting(
         const Components::Scene& scene,
         RenderLightingData& lightingData) const;

engine/include/XCEngine/Rendering/RenderSceneUtility.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <XCEngine/Core/Math/Vector3.h>
+#include <XCEngine/Rendering/RenderCameraData.h>
+#include <XCEngine/Rendering/VisibleRenderObject.h>
+
+#include <cstdint>
+#include <vector>
+
+namespace XCEngine {
+namespace Components {
+class CameraComponent;
+class GameObject;
+class Scene;
+} // namespace Components
+
+namespace Rendering {
+
+RenderCameraData BuildRenderCameraData(
+    const Components::CameraComponent& camera,
+    uint32_t viewportWidth,
+    uint32_t viewportHeight);
+
+void AppendRenderItemsForGameObject(
+    Components::GameObject& gameObject,
+    const Math::Vector3& cameraPosition,
+    std::vector<VisibleRenderItem>& outVisibleItems);
+
+std::vector<VisibleRenderItem> CollectRenderItemsForEntityIds(
+    const Components::Scene& scene,
+    const std::vector<uint64_t>& entityIds,
+    const Math::Vector3& cameraPosition);
+
+} // namespace Rendering
+} // namespace XCEngine