T-FLEX Parametric CAD. Fundamentals. 2D Design

«Bottom-Up» Design
In this case the value read from the fragment file will be put into. To change now the ball bearing diameter, it
is necessary to download its file as a separate drawing, specify the desired diameter value in that file, and
after saving the file return to the assembly drawing. This scheme is used in practice rarely, when it is
required to modify the assembly drawing by changing the values of the variables in the fragment file.
For filling in unspecified values of the variables
automatically, in the System options a special
parameter «Substitute variable values» is turned
on by default. In this case, upon inserting the
fragment, all variables automatically get constant
value read from the fragment.
Working with user-defined dialog
User-defined dialog with control elements represents itself a more visual tool for working with external
variables of the fragment. The set of different control elements allows specifying the values for the variables
with the help of various toggles, buttons and also by entering the values from the keyboard or working with
the list of values. There are two regimes in which the dialog fields for the value entry can operate. Either the
value of the variables or the expressions themselves can be displayed in the fields of the dialog. In the latter
case, the values of the expressions are shown to the right of the entry field. The second regime works in case
the parameter «Show expressions» has been set on in the properties of the entry field. Details of creating
user-defined dialogs are described in the chapter “Control Elements. Creating User Defined Dialog Boxes”.
In any case, a user can write both values and expressions into the entry fields. After finishing the data entry
(when the focus of input is shifted to another field), the fragment external variable which is related to the
given entry field will be set equal to the expression.
To define a relation between a fragment external variable and an assembly variable, you can use the context
menu commands.
You can call the context menu command “Insert Variable” or,
instead, simply press . The standard “Insert Variable” dialog
box will be displayed in the screen. Upon selecting an assembly
variable, its value will be assigned to the fragment external variable.
A checkmark before the respective command of the context menu
will be indicating that the current fragment variable has a relation
with an assembly variable. Direct editing of the dialog entries will
be modifying the respective assembly variable values.
To cancel such a relation, call the same context menu
command again. When the connection with the variable is
established, it is possible to continue working with the
drop-down lists of the values. While doing it, the assembly
variable connected to the given fragment variable will be
assigned the new value from the drop down list.
If necessary, it is possible to switch to the mode of working with the list of variables instead of working with
the user-defined dialog. For switching to another regime, use the flag “List of Variables” found at the
bottom of the dialog.
For loading one of the saved configurations (predefined set of values for the fragment external variables), use
the drop-down list «Configuration:» at the bottom of the user-defined dialog.
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