Added bounds property for tileset

Runtime/Cesium3DTileset.cs

@@ -650,6 +650,17 @@ public bool createPhysicsMeshes
             }
         }
 
+        /// <summary>
+        /// Gets the axis-aligned bounding box of the root tile of this tileset.
+        /// </summary>
+        public Bounds bounds
+        {
+            get
+            {
+                return getBounds();
+            }
+        }
+
         private partial void SetShowCreditsOnScreen(bool value);
 
         private partial void Start();
@@ -669,5 +680,7 @@ public bool createPhysicsMeshes
         /// Zoom the Editor camera to this tileset. This method does nothing outside of the Editor.
         /// </summary>
         public partial void FocusTileset();
+
+        private partial Bounds getBounds();
     }
 }

native~/Runtime/src/Cesium3DTilesetImpl.cpp

@@ -4,6 +4,7 @@
 #include "UnityPrepareRendererResources.h"
 #include "UnityTileExcluderAdaptor.h"
 #include "UnityTilesetExternals.h"
+#include "UnityTransforms.h"
 
 #include <Cesium3DTilesSelection/IonRasterOverlay.h>
 #include <Cesium3DTilesSelection/Tileset.h>
@@ -326,6 +327,36 @@ void Cesium3DTilesetImpl::FocusTileset(
 #endif
 }
 
+DotNet::UnityEngine::Bounds Cesium3DTilesetImpl::getBounds(
+  const DotNet::CesiumForUnity::Cesium3DTileset& tileset) {
+
+  // Tileset may not be loaded yet
+  if (this->_pTileset.get() == nullptr) {
+    return DotNet::UnityEngine::Bounds::Construct(
+        DotNet::UnityEngine::Vector3{0, 0, 0},
+        DotNet::UnityEngine::Vector3{0, 0, 0});
+  }
+
+  // root tile may not be loaded yet
+  Tile* rootTile = this->_pTileset->getRootTile();
+  if (rootTile == nullptr) {
+    return DotNet::UnityEngine::Bounds::Construct(
+      DotNet::UnityEngine::Vector3{ 0, 0, 0 },
+      DotNet::UnityEngine::Vector3{ 0, 0, 0 });
+  }
+
+  const BoundingVolume& bv = rootTile->getBoundingVolume();
+  CesiumGeometry::OrientedBoundingBox obb =
+      getOrientedBoundingBoxFromBoundingVolume(bv);
+  CesiumGeometry::AxisAlignedBox aabb = obb.toAxisAligned();
+  return DotNet::UnityEngine::Bounds::Construct(
+      UnityTransforms::toUnity(aabb.center),
+      DotNet::UnityEngine::Vector3{
+          float(aabb.lengthX),
+          float(aabb.lengthY),
+          float(aabb.lengthZ)});
+}
+
 Tileset* Cesium3DTilesetImpl::getTileset() { return this->_pTileset.get(); }
 
 const Tileset* Cesium3DTilesetImpl::getTileset() const {

native~/Runtime/src/Cesium3DTilesetImpl.h

@@ -5,6 +5,7 @@
 #include <DotNet/CesiumForUnity/CesiumCreditSystem.h>
 #include <DotNet/CesiumForUnity/CesiumGeoreference.h>
 #include <DotNet/System/Action.h>
+#include <DotNet/UnityEngine/Bounds.h>
 
 #include <memory>
 
@@ -40,6 +41,9 @@ class Cesium3DTilesetImpl {
   void RecreateTileset(const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
   void FocusTileset(const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
 
+  DotNet::UnityEngine::Bounds getBounds(
+      const DotNet::CesiumForUnity::Cesium3DTileset& tileset);
+
   Cesium3DTilesSelection::Tileset* getTileset();
   const Cesium3DTilesSelection::Tileset* getTileset() const;