T-FLEX Parametric CAD. Fundamentals. 2D Design

Call the command “EC: Edit Construction”. Select the right
vertical line In the dialog of the properties window place the cursor
into the field of the parameter “Distance”.
The distance from the reference line is a parameter of a parallel line,
and, by default, this distance was specified as constant. Replace the
value by the expression “-A”.
Hit at any place of the drawing. Two outcomes are then possible:
- if the variable A exists, then the construction line will adjust to the
variable value.
- if the variable does not exist, then the dialog box will appear on the
screen for defining the value of the new variable. You can then also
mark the variable as external. After pressing [OK] the construction
line will be adjusted in accordance with the value of variable.
By doing the same with the top horizontal line and defining its
parameter by a variable B, you establish relation between the
variables and the construction lines. From now on, the construction
line positions will be driven by modifications in the variables A and
B.
Variables
Note that construction line parameters can be defined by variables only when the option or is
available. (Refer to the commands “L: Construct Line”, “C: Construct Circle”, “EL:
Construct Ellipse”).
To clearly witness the relation between the construction lines and the variables, let’s complete the drawing.
Draw the graphic lines using the command “G: Create Graphic
Line” and apply the dimensions between the vertical and the
horizontal lines using the command “D: Create Dimension”.
After that, in the window “Variables” or in the main window of
the variables editor (called with the command “V: Edit
Variables”), change the value of variables A and B.
489