
This task shows you how to move
existing Sketcher elements using a line, a construction line or an axis. In
this particular case we will move a rectangle by symmetry. 

The former functionality associated
to this command is available thru the Mirror
command, which duplicates elements by symmetry. 


Create a rectangle and an
axis.

Click Symmetry
from the Transformation subtoolbar in the Operation
toolbar.

Select the rectangle you have created and click on the
axis.
The rectangle has been moved by symmetry according to the axis.



Two sides selection

Create an axis.

Create a rectangle on one
side of the Axis and a circle on the other
side.



Click Symmetry
from the Transformation subtoolbar in the Operation
toolbar.



Select the rectangle and the circle by trapping.

Select the axis.
In order to be able to multiselect elements, the axis length must be
quite important.
The symmetry is created and the two elements have been
taken into account.


Applying constraints to symmetrical elements

Create a rectangle and an
axis.

Select Constraint
from the Constraint toolbar.

Select one of the rectangle element and the axis.

Click to create the constraint.
The constraint and its value are displayed in the geometry area.





Click Symmetry
from the Transformation subtoolbar in the Operation
toolbar.

Select the rectangle and then click on the axis.
The rectangle has been moved by symmetry according to the axis.
Note that as the constraint is applied on an axis, the constraint is kept
after the symmetry.


 The constraint is also kept when it is applied to a fixed element.
 In the case of Use Edges, the element becomes isolated.


Only internal constraints are kept
after a symmetry operation. 
