fix(BoundingBox): allow extension

Author: BotellaA

include/geode/geometry/bounding_box.hpp

@@ -57,6 +57,8 @@ namespace geode
 
         void add_point( const Point< dimension >& point );
 
+        void extends( double length );
+
         bool contains( const Point< dimension >& point ) const;
 
         [[nodiscard]] bool intersects(

src/geode/geometry/bounding_box.cpp

@@ -176,6 +176,16 @@ namespace geode
         }
     }
 
+    template < index_t dimension >
+    void BoundingBox< dimension >::extends( double length )
+    {
+        for( const auto i : LRange{ dimension } )
+        {
+            min_.set_value( i, min_.value( i ) - length );
+            max_.set_value( i, max_.value( i ) + length );
+        }
+    }
+
     template < index_t dimension >
     void BoundingBox< dimension >::add_box(
         const BoundingBox< dimension >& box )