T-FLEX Parametric CAD. Fundamentals. 2D Design

Databases
argument_3 – the search option. Possible options are:
0 – find the nearest value;
-1 – find the nearest floor value;
1 – find the nearest ceiling value.
argument_4 – the parameter indicating the structure of the column subject to the search. It indicates how the
values are ordered in the column. The value 0 means the entries are not ordered, forcing the search over all
records in the database. The value 1 means the column is ordered ascending or descending. The search
completes once the difference between the sought value and the value in the current column of the database
is greater than in the previous one.
The parameters argument_3 and argument_4 are optional. If those are not specified, the default values are
used:
argument_3 = 0; search for the nearest value;
argument_4 = 0; the column is not ordered;
Function VAL
val ( record_number, database_field ), where
record_number - is an arbitrary numerical expression yielding an integer.
database_field - the reference to the field.
Example:
val ( 4, BASE.H )
This call means: get the value from the record number 4 of the field H in the database BASE.
Function FIND
find ( database_field, condition_1, condition_2, ... )
This function combines the previous two.
The function returns the value of the specified field database_field from the record satisfying the
conditions condition_1, condition_2.
If such record is not found, the function
signals the error “Incorrect record
number”.To get the parameter values for the
drawing of the bushing from the internal DB,
use the function FIND (). To do this, enter
the variable editor by using the command
“V: Edit Variables” and define the
expressions for the variables as shown on the
right hand side diagram.
Thus, we have created a parametric drawing
of a bushing. The values of the drawing
elements will be selected from
the internal database BASE depending on the value of the inner bushing diameter d. In this way, you create a
whole family of bushings for latches and mounting rods per GOST 12215-66 by creating a parametric
drawing of the bushing and connecting it to the DB.
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