T-FLEX Parametric CAD. Fundamentals. 2D Design

Ellipses
In the latter case, the parameters dialog box will appear on the screen allowing to enter an exact parameter
value. If the mouse click was used for defining the ellipse then the numerical value for the ellipse
parameter is derived from the cursor position. The property window can be used for defining the geometrical
parameter of the ellipse (the semi-axis length) in transparent mode instead of using the option .
The same way of constructing an ellipse can be realized by the following sequence of options:
or
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2. Center at node, through two nodes
Upon calling the command, use the following sequence of options:
or
These combinations create an ellipse with the center at a node, the first semi-axis ending at a node, and the
second through another node. To create this type of ellipse, select the desired node as the ellipse center.
Next, select another node for the ellipse’s first semi-axis to pass through. The node can be selected using the
option or . Then move the cursor over the node defining the position of the second semi-axis
and type . The required ellipse will be created.
3. Ellipse with the center at a node, passing through node, tangent to line
Upon calling the command, use the following sequence of options
or
These option combinations create an ellipse with the center at a node, the first semi-axis ending at a node and
the second semi-axis defined by tangency to line. To create this type of ellipse, select the desired node as the
ellipse center, then use the option or and select another node for the ellipse’s first semi-axis
to pass through. Then move the cursor over the line to be making tangency with the ellipse and type .
The required ellipse will be created.
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