.. role:: blue
   :class: blue


MbSpaceInstance Three-Dimensional Object Insertion
==================================================
.. _MbSpaceInstance_Three-Dimensional_Object_Insertion_:

.. kernel version:


The :blue:`MbSpaceInstanсe` class is declared in the *space_instanse.h* file.

The :blue:`MbSpaceInstanсe` three-dimensional object insertion is derived from the
:ref:`MbItem <MbItem_Geometric_Model_Object_>` class and is described
by the geometric object :ref:`MbSpaceItem <MbSpaceItem_Three-Dimensional_Geometrical_Object_>` *spaceItem*.

The insertion acts as a wrapper for a geometric object, allowing
it to be treated as a geometric model object. The insertion provides
a regular geometric object with a construction journal, attributes,
and the methods of a geometric model object
:ref:`MbItem <MbItem_Geometric_Model_Object_>`. The insertion of a three-dimensional
object is intended for auxiliary constructions. An insertion
of a surface is shown in Fig. 1.

.. figure:: /MODELER/OBJECTS_OF_GEOMETRIC_MODEL/pictures/O.8.8.1.png
   :width: 12cm
   :align: center

   Fig. 1

An insertion object may contain a surface
:ref:`MbSurface <MbSurface_Surface_>`, a curve
:ref:`MbCurve3D <MbCurve3D_Curve_>`, a :blue:`MbPoint3D` point, or an auxiliary geometric object :ref:`MbLegend <MbLegend_Auxiliary_Geometric_Object_>`. For objects derived from the
MbItem geometric model object (solid, wireframe, point frame,
polygonal object, assembly, insertion), insertion of a geometric object
is not used.