Project: HiCAD Feature Technology

Element Variables

Just as you can use variables for values (e.g. for the length of a cuboid), you can also use formulas for elements (e.g. for an edge to which a flange is attached).

The data types available for these element variables are:

• Edge or Edges

• Surface or Surfaces

• Part or Part list

• Point

With the exception of Point, you can choose between a data type that accepts exactly one element (Edge, Surface, Part) and a data type that accepts any number of elements of the type (Edges, Surfaces, Part list).

Element variables can be used in parametric constructions. Within element variables, there are some functions which can be used in formulas and accept the element variables as parameters. For a complete list of these functions, see Feature Parameter Formulas

Example: A parametric construction produces an edge whose length the user measures off in order to use the value, say, as the depth of a subtraction. If a change to a parameter changes the length of the edge, the subtraction feature currently still contains the old length as a fixed value. In this situation, the user can now define an element variable of type Edge (e.g. depth edge) and then parameterise the depth in the subtraction feature using theedge_length (depth edge) function.

The Value Input: Formulas and Variables • Feature Parameter Formulas

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