T-FLEX Parametric CAD. Fundamentals. 2D Design

When using a variable for defining a level, enter the variable
without braces, for example, LEVEL1
After exiting the parameters dialog box of the given element,
another dialog box will come up on screen for setting the value of
the variable LEVEL1.
Using a variable as an element level allows modifying the way in
which the drawing is displayed depending on specific conditions.
As an example, create a drawing shown on the following diagram.
Set the level of the rectangle diagonals using the variable “A”. Set
the value of the “A” variable equal to “1”. In the command
“SH: Set Levels” set the visibility range for the graphic lines
from 0 to 127. In the variable editor create a variable “B” with
the initial value “1”. Enter the following expression in the
variable editor for “A”: “B == 0?-1:1”.
Main Concepts of System Operation
Thereafter, set the value of “B” first equal to “1”, and then “0”.
With the first value, the created line will be present on screen, while absent with the second value.
Thus, using variables as levels of various elements, you can create different variations of the same drawing.
Priority
When creating assemblies, especially, in engineering industry, it is often necessary that one element be
drawn on top of others. This behavior is easy to realize using parametric fragments, hidden line removal, and
an additional special parameter of graphic elements – the priority.
The fact is, the model elements are drawn on the screen or other graphical devices in a certain order. This
order normally corresponds with the element types and the order of element creation. However, this order
can be changed using priorities.
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