When defining numerical parameters of any T-FLEX CAD element (construction or graphic line, 3D node or operation, etc.) one could need to relate one of the parameters with a certain geometric characteristics of the given model. This could be, for example, the distance between two of the model elements or the length (angle, perimeter, area etc.) of another element.
To define such relation, activate the input box of the respective parameter in the parameters window or the parameters dialog of an element and either press <F12>, or call the contextual menu of the input box via and select the Measure item in it.
The parameters window (or parameters dialog) of the element being edited temporarily disappears, while the Measure command is launched.
Next, you need to select the mode of measurement, the object or objects to be measured and the desired property or relation.
Using the Expression/Value radio switch, specify in what form the value of the selected parameter will be returned: as an expression or as a constant.
Then exit the Measure command via or <Ctrl>+<Enter>. After that, the original window, where the Measure command was called from, reappears on the screen. It will already have the geometrical parameter value or expression that was used to evaluate it, in the parameter input box.
See Also:
•Contextual Menus of Input Boxes