T-FLEX Parametric CAD. Fundamentals. 2D Design

Fundamentals. Two-Dimensional Design
defining the variables, many similar, bulky expressions, differing only in separate arguments, are used in the
expression, it is possible to define user's own function, a call to which can replace the expressions. User's
functions are defined with the help of variables of a special kind – variables-functions.
Variable-function represents itself the definition of the user's function. The expression for the variablefunction
is composed according to the same rules as those for the standard variable. The entry of the
arguments of the function into the expression is denoted in the following way (the number of the arguments
is not limited):
#1 – the first argument,
#2 – and second argument and so on.
The function defined in such way can be used in the variables editor upon specifying the values of other
variables. Upon calling this function, the names of the variables and numeric expressions serve as the
arguments. The number of actual arguments must be equal or more than the number of formal arguments.
For example, if the variable-function was defined in the following way:
FUNC=(#1+#2)*10,
the call FUNC (L, 20, 30) will not be a mistake.
In the list of the variables of the current document, the empty brackets “()” are automatically
added to the name of the variable-function.
The list of variable's values
For any T-FLEX CAD variable it is possible to define a list of values. To be more precise – a list of
expressions since the list for the variable can include any values, not necessarily the constants. The list of
various expressions can be defined even for a variable-function. After that, the value of any variable, more
precisely, of any expression, determining this value, can be selected from the created list.
The list is created as a set of lines, containing required constants or expressions. Moreover, the list can be
created on the basis of already existing file, internal database, the list of materials in the 3D version or the
calender two last items are available only for text variables.
The list defined for the variable will appear in all places in which the value of the given variables is specified
(in the variables editor, in the command “М: Edit model parameters”, upon assigning the variables of a
fragment). The field for the entry of the values of such variable will include the graphic button which
enables to call the list of values. To access the list of values, it is enough to point at this button with the
cursor of the mouse and press . As a result, the list will pop up on the screen, and the new value
(expression) can be selected from the list.
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