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T-FLEX Parametric CAD. Fundamentals. 2D Design

T-FLEX Parametric CAD. Fundamentals. 2D Design

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Create two Lines and Node in (0,0)<br />

<br />

<br />

or<br />

<br />

…<br />

<br />

Creates a node at the nearest intersection of construction<br />

lines<br />

Creates a vertical and a horizontal line, and a node at the<br />

intersection to be used as the fixing point for a fragment.<br />

In this case, the line parameters are automatically assigned<br />

variables xNth and yNth (x1,y1 … x9,y9)<br />

Executes edit Construction command<br />

Lines<br />

Some of these options become available only after selecting certain construction entities.<br />

There are different techniques of creating lines. Some lines are independent of other construction entities.<br />

These could be a standalone horizontal or vertical line. Usually, these are the very first lines on a drawing.<br />

By creating a vertical and a horizontal line, you define the base lines, to which all the rest will be related.<br />

Other lines require the related elements to be selected at the time of creation. For example, a line tangent to<br />

two circles requires the circles to be selected and the tangency condition defined.<br />

A number of line creation techniques require a certain geometric parameter to be defined. For example,<br />

consider constructing a line parallel to another line and passing at a certain distance from the other line. In<br />

this case, it is necessary, besides selecting the original line, to define the distance between the lines.<br />

Exact values of the numerical geometric parameters can be entered in the property window in transparent<br />

mode. Besides, one can use the line parameters dialog box under the option , that, besides the geometric<br />

parameters, also allows defining general system ones, as level, layer, etc. If exact value is not required, one<br />

can simply point at the desired location on the drawing and click . In this case, the numerical parameter<br />

value is defined by the cursor position.<br />

When constructing lines, one should keep in mind that after creating one line the command sticks in the<br />

selected line type creation mode. For example, once a pair of crossing lines was created under the <br />

option, another pair of crossing lines can be created again without re-selecting the option. This feature helps<br />

speed up constructing same-type lines. To quit such a mode, right-click .<br />

The line creation command allows making a variety of construction line configurations by combining the<br />

limited set of options, as follows:<br />

189

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