T-FLEX Parametric CAD. Fundamentals. 2D Design

Layer
Main Concepts of System Operation
A layer is a parameter of any drawing element. It defines the element association with a particular group of
the model elements.
The user can define the layer name for each system element to belong to. A
layer name is a string of up to 20 text characters.
An element layer can also be set on the system toolbar.
Layer parameters can be created, deleted and modified using the command “QL: Configure Layers”:
Keyboard Textual Menu Icon
“Customize|Layers…”
After calling this command the dialog window “Layers”
appears. In the window of the given dialog box the list of
the layers existing in the given document and their
parameters are shown. Under this list there are fields for
assigning parameters of the layer and buttons for performing
different actions with the fields.
The button [New] creates the new layer in the document.
After pressing this button the system asks to give a name to
the created layer.
The button [Delete] removes unused layer (it becomes
available only upon selecting from the list the layer marked
with the sign ). The button [Rename] allows assigning
the new name for the layer selected from the layers list.
The buttons [Sort], [Up], [Down] are used for
changing the arrangement of the layers in the list. The layers
arrangement is enforced in all dialog boxes of the system
which allow selection of the layer.
For changing parameters of any layer it is necessary to select it from the list of the layers and set on/off the
required flags under the list. By entering layer parameters you define the properties of the elements
belonging to this layer. The following parameters can be defined for each layer:
Hidden. A layer can also be assigned invisible property by using a variable. The variable can have two
values: 0 – the layer is visible, and 1 – the layer is invisible.
The variable values different from 0 and 1, are processed by the system as follows: the fractional
part is dropped, and the resulting number is matched with 0. If matching, the layer will be visible,
otherwise – invisible.
Frozen. When set, no element on this layer will be allowed for selection during element creation and
editing.
Screen only. When set, all elements on this layer will be displayed on the screen only, but will not be
printed, plotted or exported.
Hidden when model is used as a Fragment. When set, the elements on this layer will not be displayed
when the drawing is used as a fragment.
Visible only when model is used as a Fragment. When set, the elements on this layer will only be
displayed when the drawing is used as a fragment of an assembly.
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