+.. |scale.icon| image:: images/scale.png
Scale
=====
+**Scale** feature makes a scaled shape basing on the initial shape.
+
+To create a Scale in the active part:
+
+#. select in the Main Menu *Features - > Scale* item or
+#. click |scale.icon| **Scale** button in the toolbar
+
+Two Scale algorithms are:
+
+ .. image:: images/scale_factor_32x32.png
+ :align: left
+ by one common factor
+
+ .. image:: images/scale_dimensions_32x32.png
+ :align: left
+ by different factors along axes
+
+Scale by one common factor
+--------------------------
+
+Scale by one common factor scales the entire object without modification the geometry of the shape: dimensions change evenly in all three orthogonal directions.
.. image:: images/Scale1.png
:align: center
.. centered::
- Scale: define by a one common factor
+ Scale by one common factor property panel
+
+Input fields:
+
+- **Main objects** panel contains shapes to be scaled. Shapes are selected in 3D OCC viewer or object browser;
+- **Center point** defines the point relatively to which the object is scaled. Point is selected in 3D OCC viewer or object browser;
+- **Scale factor** defines the multiplier of axial dimensions. If Scale Factor is negative, the object is mirrored through the Central Point.
+
+**TUI Command**:
+
+.. py:function:: model.addScale(Part_doc, [shape], center, factor)
+
+ :param part: The current part object.
+ :param list: A list of shapes in format *model.selection(TYPE, shape)*.
+ :param object: A center point in format *model.selection(TYPE, shape)*.
+ :param real: Scale factor.
+ :return: Result object.
+
+Result
+""""""
+
+Result of operation is transformed initial shape shown in wireframe mode together with initial shape in shading mode.
+
+.. image:: images/Scale_common_factor.png
+ :align: center
+
+.. centered::
+ Scale by one common factor
+
+**See Also** a sample TUI Script of :ref:`tui_Scale_common_factor` operation.
+
+Scale by different factors along axes
+-------------------------------------
+Scale by different factors along axes is a general transformation, which can modify the geometry, for example, a sphere can be transformed into an ellipsoid.
.. image:: images/Scale2.png
:align: center
.. centered::
- Scale: define by different factors
+ Scale: define by different factors property panel
+
+Input fields:
+
+- **Main objects** panel contains shapes to be scaled. Shapes are selected in 3D OCC viewer or object browser;
+- **Center point** defines the point relatively to which the object is scaled. Point is selected in 3D OCC viewer or object browser;
+- **Scale factor in X**, **Scale factor in Y**, **Scale factor in Z** define the the multipliers of axial dimensions. If Scale Factor is negative, the object is mirrored through the Central Point.
+
+**TUI Command**:
+
+.. py:function:: model.addScale(Part_doc, [shape], center, factors)
+
+ :param part: The current part object.
+ :param list: A list of shapes in format *model.selection(TYPE, shape)*.
+ :param object: A center point in format *model.selection(TYPE, shape)*.
+ :param list: A list of three scale factor values along X. Y, Z axes.
+ :return: Result object.
+
+Result
+""""""
+
+Result of operation is transformed initial shape.
+
+.. image:: images/Scale_XYZ.png
+ :align: center
+
+.. centered::
+ Scale by different factors
+
+**See Also** a sample TUI Script of :ref:`tui_Scale_XYZ` operation.
\ No newline at end of file
