Ability to update Tileset options without reloading tileset

Runtime/Cesium3DTileset.cs

@@ -243,7 +243,7 @@ public float maximumScreenSpaceError
             set
             {
                 this._maximumScreenSpaceError = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -264,7 +264,7 @@ public bool preloadAncestors
             set
             {
                 this._preloadAncestors = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -285,7 +285,7 @@ public bool preloadSiblings
             set
             {
                 this._preloadSiblings = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -308,7 +308,7 @@ public bool forbidHoles
             set
             {
                 this._forbidHoles = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -331,7 +331,7 @@ public uint maximumSimultaneousTileLoads
             set
             {
                 this._maximumSimultaneousTileLoads = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -354,7 +354,7 @@ public long maximumCachedBytes
             set
             {
                 this._maximumCachedBytes = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -378,7 +378,7 @@ public uint loadingDescendantLimit
             set
             {
                 this._loadingDescendantLimit = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -408,7 +408,7 @@ public bool enableFrustumCulling
             set
             {
                 this._enableFrustumCulling = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -435,7 +435,7 @@ public bool enableFogCulling
             set
             {
                 this._enableFogCulling = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -474,7 +474,7 @@ public bool enforceCulledScreenSpaceError
             set
             {
                 this._enforceCulledScreenSpaceError = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -511,7 +511,7 @@ public float culledScreenSpaceError
             set
             {
                 this._culledScreenSpaceError = value;
-                this.RecreateTileset();
+                this.UpdateTilesetOptions();
             }
         }
 
@@ -540,7 +540,7 @@ public Material opaqueMaterial
         //    set
         //    {
         //        this._useLodTransitions = value;
-        //        this.RecreateTileset();
+        //        this.UpdateTilesetOptions();
         //    }
         //}
 
@@ -554,7 +554,7 @@ public Material opaqueMaterial
         //    set
         //    {
         //        this._lodTransitionLength = value;
-        //        this.RecreateTileset();
+        //        this.UpdateTilesetOptions();
         //    }
         //}
 
@@ -708,6 +708,12 @@ public bool createPhysicsMeshes
         /// based on the current view.
         /// </summary>
         public partial void RecreateTileset();
+
+        /// <summary>
+        /// Update the tileset options. Tiles are not unloaded, but the Options of the tileset are updated
+        /// based on the current values of the properties.
+        /// </summary>
+        public partial void UpdateTilesetOptions();
 
         /// <summary>
         /// Zoom the Editor camera to this tileset. This method does nothing outside of the Editor.

Runtime/ConfigureReinterop.cs

@@ -282,6 +282,7 @@ public void ExposeToCPP()
             tileset.showCreditsOnScreen = tileset.showCreditsOnScreen;
             tileset.ionServer = tileset.ionServer;
             tileset.RecreateTileset();
+            tileset.UpdateTilesetOptions();
 
             GraphicsFormat gfxFmt = GraphicsFormat.RGB_ETC_UNorm;
             FormatUsage fmtUsage = FormatUsage.Sample;

native~/Runtime/src/Cesium3DTilesetImpl.cpp

@@ -212,6 +212,28 @@ void Cesium3DTilesetImpl::RecreateTileset(
   this->DestroyTileset(tileset);
 }
 
+void Cesium3DTilesetImpl::UpdateTilesetOptions(
+    const DotNet::CesiumForUnity::Cesium3DTileset& tileset) {
+  if (this->_pTileset) {
+    TilesetOptions options = this->_pTileset->getOptions();
+    options.maximumScreenSpaceError = tileset.maximumScreenSpaceError();
+    options.preloadAncestors = tileset.preloadAncestors();
+    options.preloadSiblings = tileset.preloadSiblings();
+    options.forbidHoles = tileset.forbidHoles();
+    options.maximumSimultaneousTileLoads = tileset.maximumSimultaneousTileLoads();
+    options.maximumCachedBytes = tileset.maximumCachedBytes();
+    options.loadingDescendantLimit = tileset.loadingDescendantLimit();
+    options.enableFrustumCulling = tileset.enableFrustumCulling();
+    options.enableFogCulling = tileset.enableFogCulling();
+    options.enforceCulledScreenSpaceError = tileset.enforceCulledScreenSpaceError();
+    options.culledScreenSpaceError = tileset.culledScreenSpaceError();
+    // options.enableLodTransitionPeriod = tileset.useLodTransitions();
+    // options.lodTransitionLength = tileset.lodTransitionLength();
+    options.showCreditsOnScreen = tileset.showCreditsOnScreen();
+    this->_pTileset->getOptions() = options;
+  }
+}
+
 namespace {
 
 struct CalculateECEFCameraPosition {

native~/Runtime/src/Cesium3DTilesetImpl.h

@@ -40,6 +40,7 @@ class Cesium3DTilesetImpl {
   void OnDisable(const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
 
   void RecreateTileset(const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
+  void UpdateTilesetOptions(const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
   void FocusTileset(const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
   void UpdateOverlayMaterialKeys(
       const DotNet::CesiumForUnity::Cesium3DTileset& tileset);