T-FLEX Parametric CAD. Fundamentals. 2D Design

Main Concepts of System Operation
The grid options are saved with the drawing.
The grid management commands are accessible via the textual menu "Customize|Snap":
Grid Snap On
- Enlarge Grid Step (doubles)
- Reduce Grid Step (halves)
If the grid snap is turned on then the grid knots serve as the snapping nodes for the drawing elements.
General Concepts of Element Creation
Placement of any element on the drawing can be defined in the following ways.
Independent of other elements. This kind of placement is defined by the absolute coordinates of the
element on the drawing, independently of other element locations. Placement of such elements is usually set
by clicking or by assigning exact values of snapping coordinates in the command’s properties window.
Dependent on reference elements. The element location will depend on the location of the reference
element this one is related to. When the location of the reference elements is modified, the current element
will relocate accordingly.
To select the reference elements to snap to, the options are provided for selecting a line, a circle, a node, etc.
in most 2D element creation commands. The variety of available options depends on the element being
created. The most commonly used snapping options are presented below:
Select Line
Select Circle
Select Node
Select Ellipse
Select Spline
When the object snapping is on, use of these options is not essential. However, using the options in this case
helps narrow down the range of elements available for snapping. Thus, for instance, with the option
active, only circles will be pre-highlighting when moving the cursor around the drawing.
When creating and editing elements, an earlier created relation of this element with another element can be
abolished by the following option:
Break (kill) relations
Object snaps can be used in both ways of defining the 2D element position. The set of the available snaps
depends on the current command. By using snaps, a 2D element being created can be tied to:
- a free 2D node automatically created at the specified location (that is, not tied to objects used for
snapping);
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