Constructive geometric models and their application in design and engineering activities

The features of design and engineering activities are analyzed. It is noted that the main part of the design and engineering activity belongs to the development of the geometric component of electronic product model. It is concluded that the development of algorithms, methods and software to simplify the creation or improve the quality of geometric data is relevant. The terms introduced by the State Standard are analyzed and it is shown that at different stages of design and engineering activities, the geometric component of electronic product model includes a plurality of geometric and graphic models. At the same time, from the point of view of constructive geometric modeling, closely associated with design and engineering activities, there is no fundamental difference between flat and three-dimensional geometric models, and they should be considered uniformly. The concept of a constructive geometric model, combining electronic geometric models and electronic drawings, is introduced. A constructive geometric model can simultaneously contain flat, threedimensional and multidimensional geometric data, which can be displayed using different computer graphics tools. Text and visual forms are offered to represent constructive geometric models. The features and areas of applying a visual and text presentation of constructive geometric models are given. The article considers the use of constructive geometric models to automate the creation of electronic geometric models, as well as verification of electronic drawings and models.