Add Get Center Method for Rect2/Rect2i and AABB.

modules/csg/csg.cpp

@@ -517,7 +517,7 @@ int CSGBrushOperation::MeshMerge::_create_bvh(FaceBVH *facebvhptr, FaceBVH **fac
 	int index = r_max_alloc++;
 	FaceBVH *_new = &facebvhptr[index];
 	_new->aabb = aabb;
-	_new->center = aabb.position + aabb.size * 0.5;
+	_new->center = aabb.get_center();
 	_new->face = -1;
 	_new->left = left;
 	_new->right = right;
@@ -678,7 +678,7 @@ void CSGBrushOperation::MeshMerge::mark_inside_faces() {
 		facebvh[i].aabb.position = points[faces[i].points[0]];
 		facebvh[i].aabb.expand_to(points[faces[i].points[1]]);
 		facebvh[i].aabb.expand_to(points[faces[i].points[2]]);
-		facebvh[i].center = facebvh[i].aabb.position + facebvh[i].aabb.size * 0.5;
+		facebvh[i].center = facebvh[i].aabb.get_center();
 		facebvh[i].aabb.grow_by(vertex_snap);
 		facebvh[i].next = -1;
 

modules/mono/glue/GodotSharp/GodotSharp/Core/AABB.cs

@@ -66,6 +66,16 @@ namespace Godot
             return new AABB(topLeft, _size.Abs());
         }
 
+        /// <summary>
+        /// Returns the center of the <see cref="AABB"/>, which is equal
+        /// to <see cref="Position"/> + (<see cref="Size"/> / 2).
+        /// </summary>
+        /// <returns>The center.</returns>
+        public Vector3 GetCenter()
+        {
+            return _position + (_size * 0.5f);
+        }
+
         /// <summary>
         /// Returns <see langword="true"/> if this <see cref="AABB"/> completely encloses another one.
         /// </summary>

modules/mono/glue/GodotSharp/GodotSharp/Core/Rect2.cs

@@ -164,6 +164,16 @@ namespace Godot
             return _size.x * _size.y;
         }
 
+        /// <summary>
+        /// Returns the center of the <see cref="Rect2"/>, which is equal
+        /// to <see cref="Position"/> + (<see cref="Size"/> / 2).
+        /// </summary>
+        /// <returns>The center.</returns>
+        public Vector2 GetCenter()
+        {
+            return _position + (_size * 0.5f);
+        }
+
         /// <summary>
         /// Returns a copy of the <see cref="Rect2"/> grown by the specified amount
         /// on all sides.

modules/mono/glue/GodotSharp/GodotSharp/Core/Rect2i.cs

@@ -151,7 +151,7 @@ namespace Godot
         }
 
         /// <summary>
-        /// Returns the area of the <see cref="Rect2"/>.
+        /// Returns the area of the <see cref="Rect2i"/>.
         /// </summary>
         /// <returns>The area.</returns>
         public int GetArea()
@@ -159,6 +159,18 @@ namespace Godot
             return _size.x * _size.y;
         }
 
+        /// <summary>
+        /// Returns the center of the <see cref="Rect2i"/>, which is equal
+        /// to <see cref="Position"/> + (<see cref="Size"/> / 2).
+        /// If <see cref="Size"/> is an odd number, the returned center
+        /// value will be rounded towards <see cref="Position"/>.
+        /// </summary>
+        /// <returns>The center.</returns>
+        public Vector2i GetCenter()
+        {
+            return _position + (_size / 2);
+        }
+
         /// <summary>
         /// Returns a copy of the <see cref="Rect2i"/> grown by the specified amount
         /// on all sides.