A short description of the PrESMod modeling language and

a preprocessor for its application

            The main advantage of the PrESMod modeling language lies in the availability of all possible variations for the description of entities. Characteristic points, coordinates of characteristic points and characteristic parameters, including statements used in the primary (geometrical) description enable a great number of variations for the description of every standard entity (straight line, arc, circumference). Description of the geometry of curved lines can be performed using defined functions in parameter or non-parameter forms. Forms with concrete dimensions (constants), general dimensions (variables) and a combination of concrete and general dimensions can be described.

            When forms are described in the PrESMod modeling language, a preprocessor exists, which processes (with inserted concrete dimensions before or during processing) the form description (program) and delivers it to AutoCAD where the drawing is made.

            Dimensions of the drawing obtained are defined in the form description itself, while variable (general) dimensions are selected or input before preprocessing of the form description or during form processing (if they are not selected before processing of the form description).

            For forms with only concrete dimensions, such as the form defined as “kriva” (curve) in the following demo example, selection of the program name “kriva” results in the drawing of the form “kriva”.

             A mechanical element or the second form containing variable dimensions can be described using this language (in this DEMO example it is the form Fig1) and when you would like to draw the element or form with the desired dimensions, you simply select the description of that part (the description program for this DEMO example is Fig1.txt) insert dimensions, after which the output drawing in AutoCAD is obtained.

            Two examples of the description of forms, as an illustration, are given here, containing output drawings made in AutoCAD.