初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/CesiumRuntime/Private/CesiumGltfPointsSceneProxyUpdater.h

@@ -0,0 +1,52 @@
+// Copyright 2020-2024 CesiumGS, Inc. and Contributors
+
+#pragma once
+
+#include "Cesium3DTileset.h"
+#include "CesiumGltfPointsComponent.h"
+#include "CesiumGltfPointsSceneProxy.h"
+
+/**
+ * This is used by Cesium3DTilesets to propagate their settings to any glTF
+ * points components it parents.
+ */
+class FCesiumGltfPointsSceneProxyUpdater {
+public:
+  /** Updates proxies with new tileset settings. Must be called from a game
+   * thread. */
+  static void UpdateSettingsInProxies(ACesium3DTileset* Tileset) {
+    if (!IsValid(Tileset) || !IsInGameThread()) {
+      return;
+    }
+
+    TInlineComponentArray<UCesiumGltfPointsComponent*> ComponentArray;
+    Tileset->GetComponents<UCesiumGltfPointsComponent>(ComponentArray);
+
+    // Used to pass tileset data updates to render thread
+    TArray<FCesiumGltfPointsSceneProxy*> SceneProxies;
+    TArray<FCesiumGltfPointsSceneProxyTilesetData> ProxyTilesetData;
+
+    for (UCesiumGltfPointsComponent* PointsComponent : ComponentArray) {
+      FCesiumGltfPointsSceneProxy* PointsProxy =
+          static_cast<FCesiumGltfPointsSceneProxy*>(
+              PointsComponent->SceneProxy);
+      if (PointsProxy) {
+        SceneProxies.Add(PointsProxy);
+      }
+
+      FCesiumGltfPointsSceneProxyTilesetData TilesetData;
+      TilesetData.UpdateFromComponent(PointsComponent);
+      ProxyTilesetData.Add(TilesetData);
+    }
+
+    // Update tileset data
+    ENQUEUE_RENDER_COMMAND(TransferCesium3DTilesetSettingsToPointsProxies)
+    ([SceneProxies,
+      ProxyTilesetData](FRHICommandListImmediate& RHICmdList) mutable {
+      // Iterate over proxies and update their data
+      for (int32 i = 0; i < SceneProxies.Num(); i++) {
+        SceneProxies[i]->UpdateTilesetData(ProxyTilesetData[i]);
+      }
+    });
+  }
+};