add new bbox function

openVulkanoCpp/Math/AABB.hpp

@@ -59,6 +59,16 @@ namespace OpenVulkano::Math
 			Range<T>::max = other.GetMax();
 		}
 
+		void Stretch(T::value_type scalar)
+		{ 
+			if (IsEmpty()) [[unlikely]]
+			{
+				return;
+			}
+			Range<T>::min -= scalar;
+			Range<T>::max += scalar;
+		}
+
 		void Grow(const T& point)
 		{
 			Range<T>::min = Math::Utils::min(Range<T>::min, point);