Changed the DiffuseProbeGrid and ReflectionProbe components to only override the Box size if it's at the default (unit)

Signed-off-by: dmcdiar <dmcdiar@amazon.com>

Gems/AtomLyIntegration/CommonFeatures/Code/Source/DiffuseGlobalIllumination/DiffuseProbeGridComponentConstants.h

@@ -13,8 +13,8 @@ namespace AZ
     {
         static constexpr const char* const DiffuseProbeGridComponentTypeId = "{9B900A04-192F-4F5E-AE31-762605D8159A}";
         static constexpr const char* const EditorDiffuseProbeGridComponentTypeId = "{F80086E1-ECE7-4E8C-B727-A750D10F7D83}";
-        static constexpr float DefaultDiffuseProbeGridSpacing = 4.0f;
-        static constexpr float DefaultDiffuseProbeGridExtents = 20.0f;
+        static constexpr float DefaultDiffuseProbeGridSpacing = 2.0f;
+        static constexpr float DefaultDiffuseProbeGridExtents = 8.0f;
         static constexpr float DefaultDiffuseProbeGridAmbientMultiplier = 1.0f;
         static constexpr float DefaultDiffuseProbeGridViewBias = 0.2f;
         static constexpr float DefaultDiffuseProbeGridNormalBias = 0.1f;

Gems/AtomLyIntegration/CommonFeatures/Code/Source/DiffuseGlobalIllumination/DiffuseProbeGridComponentController.cpp

@@ -169,9 +169,20 @@ namespace AZ
 
             m_featureProcessor->SetMode(m_handle, m_configuration.m_runtimeMode);
 
-            // set box shape component dimensions from the configuration
-            // this will invoke the OnShapeChanged() handler and set the outer extents on the feature processor
-            m_boxShapeInterface->SetBoxDimensions(m_configuration.m_extents);
+            // if this is a new DiffuseProbeGrid entity and the box shape has not been changed (i.e., it's still unit sized)
+            // then use the default extents, otherwise use the current box shape extents
+            AZ::Vector3 extents(0.0f);
+            AZ::Vector3 boxDimensions = m_boxShapeInterface->GetBoxDimensions();
+            if (m_configuration.m_entityId == EntityId::InvalidEntityId && boxDimensions == AZ::Vector3(1.0f))
+            {
+                extents = m_configuration.m_extents;
+            }
+            else
+            {
+                extents = boxDimensions;
+            }
+
+            m_boxShapeInterface->SetBoxDimensions(extents);
         }
 
         void DiffuseProbeGridComponentController::OnAssetReady(Data::Asset<Data::AssetData> asset)

Gems/AtomLyIntegration/CommonFeatures/Code/Source/DiffuseGlobalIllumination/DiffuseProbeGridComponentController.h

@@ -47,6 +47,8 @@ namespace AZ
             Data::Asset<RPI::StreamingImageAsset> m_bakedDistanceTextureAsset;
             Data::Asset<RPI::StreamingImageAsset> m_bakedRelocationTextureAsset;
             Data::Asset<RPI::StreamingImageAsset> m_bakedClassificationTextureAsset;
+
+            AZ::u64 m_entityId{ EntityId::InvalidEntityId };
         };
 
         class DiffuseProbeGridComponentController final

Gems/AtomLyIntegration/CommonFeatures/Code/Source/DiffuseGlobalIllumination/EditorDiffuseProbeGridComponent.cpp

@@ -147,6 +147,9 @@ namespace AZ
             AzToolsFramework::EditorComponentSelectionRequestsBus::Handler::BusConnect(GetEntityId());
             AZ::TickBus::Handler::BusConnect();
             AzToolsFramework::EditorEntityInfoNotificationBus::Handler::BusConnect();
+
+            AZ::u64 entityId = (AZ::u64)GetEntityId();
+            m_controller.m_configuration.m_entityId = entityId;
         }
 
         void EditorDiffuseProbeGridComponent::Deactivate()